| /* Compiler driver program that can handle many languages. |
| Copyright (C) 1987-2014 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it under |
| the terms of the GNU General Public License as published by the Free |
| Software Foundation; either version 3, or (at your option) any later |
| version. |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* This program is the user interface to the C compiler and possibly to |
| other compilers. It is used because compilation is a complicated procedure |
| which involves running several programs and passing temporary files between |
| them, forwarding the users switches to those programs selectively, |
| and deleting the temporary files at the end. |
| |
| CC recognizes how to compile each input file by suffixes in the file names. |
| Once it knows which kind of compilation to perform, the procedure for |
| compilation is specified by a string called a "spec". */ |
| |
| #include "config.h" |
| #include "system.h" |
| #include "coretypes.h" |
| #include "multilib.h" /* before tm.h */ |
| #include "tm.h" |
| #include "xregex.h" |
| #include "obstack.h" |
| #include "intl.h" |
| #include "prefix.h" |
| #include "gcc.h" |
| #include "diagnostic.h" |
| #include "flags.h" |
| #include "opts.h" |
| #include "params.h" |
| #include "vec.h" |
| #include "filenames.h" |
| |
| /* By default there is no special suffix for target executables. */ |
| /* FIXME: when autoconf is fixed, remove the host check - dj */ |
| #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX) |
| #define HAVE_TARGET_EXECUTABLE_SUFFIX |
| #endif |
| |
| /* By default there is no special suffix for host executables. */ |
| #ifdef HOST_EXECUTABLE_SUFFIX |
| #define HAVE_HOST_EXECUTABLE_SUFFIX |
| #else |
| #define HOST_EXECUTABLE_SUFFIX "" |
| #endif |
| |
| /* By default, the suffix for target object files is ".o". */ |
| #ifdef TARGET_OBJECT_SUFFIX |
| #define HAVE_TARGET_OBJECT_SUFFIX |
| #else |
| #define TARGET_OBJECT_SUFFIX ".o" |
| #endif |
| |
| static const char dir_separator_str[] = { DIR_SEPARATOR, 0 }; |
| |
| /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */ |
| #ifndef LIBRARY_PATH_ENV |
| #define LIBRARY_PATH_ENV "LIBRARY_PATH" |
| #endif |
| |
| /* If a stage of compilation returns an exit status >= 1, |
| compilation of that file ceases. */ |
| |
| #define MIN_FATAL_STATUS 1 |
| |
| /* Flag set by cppspec.c to 1. */ |
| int is_cpp_driver; |
| |
| /* Flag set to nonzero if an @file argument has been supplied to gcc. */ |
| static bool at_file_supplied; |
| |
| /* Definition of string containing the arguments given to configure. */ |
| #include "configargs.h" |
| |
| /* Flag saying to print the command line options understood by gcc and its |
| sub-processes. */ |
| |
| static int print_help_list; |
| |
| /* Flag saying to print the version of gcc and its sub-processes. */ |
| |
| static int print_version; |
| |
| /* Flag indicating whether we should ONLY print the command and |
| arguments (like verbose_flag) without executing the command. |
| Displayed arguments are quoted so that the generated command |
| line is suitable for execution. This is intended for use in |
| shell scripts to capture the driver-generated command line. */ |
| static int verbose_only_flag; |
| |
| /* Flag indicating how to print command line options of sub-processes. */ |
| |
| static int print_subprocess_help; |
| |
| /* Linker suffix passed to -fuse-ld=... */ |
| static const char *use_ld; |
| |
| /* Whether we should report subprocess execution times to a file. */ |
| |
| FILE *report_times_to_file = NULL; |
| |
| /* Nonzero means place this string before uses of /, so that include |
| and library files can be found in an alternate location. */ |
| |
| #ifdef TARGET_SYSTEM_ROOT |
| static const char *target_system_root = TARGET_SYSTEM_ROOT; |
| #else |
| static const char *target_system_root = 0; |
| #endif |
| |
| /* Nonzero means pass the updated target_system_root to the compiler. */ |
| |
| static int target_system_root_changed; |
| |
| /* Nonzero means append this string to target_system_root. */ |
| |
| static const char *target_sysroot_suffix = 0; |
| |
| /* Nonzero means append this string to target_system_root for headers. */ |
| |
| static const char *target_sysroot_hdrs_suffix = 0; |
| |
| /* Nonzero means write "temp" files in source directory |
| and use the source file's name in them, and don't delete them. */ |
| |
| static enum save_temps { |
| SAVE_TEMPS_NONE, /* no -save-temps */ |
| SAVE_TEMPS_CWD, /* -save-temps in current directory */ |
| SAVE_TEMPS_OBJ /* -save-temps in object directory */ |
| } save_temps_flag; |
| |
| /* Output file to use to get the object directory for -save-temps=obj */ |
| static char *save_temps_prefix = 0; |
| static size_t save_temps_length = 0; |
| |
| /* The compiler version. */ |
| |
| static const char *compiler_version; |
| |
| /* The target version. */ |
| |
| static const char *const spec_version = DEFAULT_TARGET_VERSION; |
| |
| /* The target machine. */ |
| |
| static const char *spec_machine = DEFAULT_TARGET_MACHINE; |
| |
| /* Nonzero if cross-compiling. |
| When -b is used, the value comes from the `specs' file. */ |
| |
| #ifdef CROSS_DIRECTORY_STRUCTURE |
| static const char *cross_compile = "1"; |
| #else |
| static const char *cross_compile = "0"; |
| #endif |
| |
| /* Greatest exit code of sub-processes that has been encountered up to |
| now. */ |
| static int greatest_status = 1; |
| |
| /* This is the obstack which we use to allocate many strings. */ |
| |
| static struct obstack obstack; |
| |
| /* This is the obstack to build an environment variable to pass to |
| collect2 that describes all of the relevant switches of what to |
| pass the compiler in building the list of pointers to constructors |
| and destructors. */ |
| |
| static struct obstack collect_obstack; |
| |
| /* Forward declaration for prototypes. */ |
| struct path_prefix; |
| struct prefix_list; |
| |
| static void init_spec (void); |
| static void store_arg (const char *, int, int); |
| static void insert_wrapper (const char *); |
| static char *load_specs (const char *); |
| static void read_specs (const char *, bool, bool); |
| static void set_spec (const char *, const char *, bool); |
| static struct compiler *lookup_compiler (const char *, size_t, const char *); |
| static char *build_search_list (const struct path_prefix *, const char *, |
| bool, bool); |
| static void xputenv (const char *); |
| static void putenv_from_prefixes (const struct path_prefix *, const char *, |
| bool); |
| static int access_check (const char *, int); |
| static char *find_a_file (const struct path_prefix *, const char *, int, bool); |
| static void add_prefix (struct path_prefix *, const char *, const char *, |
| int, int, int); |
| static void add_sysrooted_prefix (struct path_prefix *, const char *, |
| const char *, int, int, int); |
| static char *skip_whitespace (char *); |
| static void delete_if_ordinary (const char *); |
| static void delete_temp_files (void); |
| static void delete_failure_queue (void); |
| static void clear_failure_queue (void); |
| static int check_live_switch (int, int); |
| static const char *handle_braces (const char *); |
| static inline bool input_suffix_matches (const char *, const char *); |
| static inline bool switch_matches (const char *, const char *, int); |
| static inline void mark_matching_switches (const char *, const char *, int); |
| static inline void process_marked_switches (void); |
| static const char *process_brace_body (const char *, const char *, const char *, int, int); |
| static const struct spec_function *lookup_spec_function (const char *); |
| static const char *eval_spec_function (const char *, const char *); |
| static const char *handle_spec_function (const char *, bool *); |
| static char *save_string (const char *, int); |
| static void set_collect_gcc_options (void); |
| static int do_spec_1 (const char *, int, const char *); |
| static int do_spec_2 (const char *); |
| static void do_option_spec (const char *, const char *); |
| static void do_self_spec (const char *); |
| static const char *find_file (const char *); |
| static int is_directory (const char *, bool); |
| static const char *validate_switches (const char *, bool); |
| static void validate_all_switches (void); |
| static inline void validate_switches_from_spec (const char *, bool); |
| static void give_switch (int, int); |
| static int used_arg (const char *, int); |
| static int default_arg (const char *, int); |
| static void set_multilib_dir (void); |
| static void print_multilib_info (void); |
| static void perror_with_name (const char *); |
| static void display_help (void); |
| static void add_preprocessor_option (const char *, int); |
| static void add_assembler_option (const char *, int); |
| static void add_linker_option (const char *, int); |
| static void process_command (unsigned int, struct cl_decoded_option *); |
| static int execute (void); |
| static void alloc_args (void); |
| static void clear_args (void); |
| static void fatal_signal (int); |
| #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) |
| static void init_gcc_specs (struct obstack *, const char *, const char *, |
| const char *); |
| #endif |
| #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) |
| static const char *convert_filename (const char *, int, int); |
| #endif |
| |
| static const char *getenv_spec_function (int, const char **); |
| static const char *if_exists_spec_function (int, const char **); |
| static const char *if_exists_else_spec_function (int, const char **); |
| static const char *sanitize_spec_function (int, const char **); |
| static const char *replace_outfile_spec_function (int, const char **); |
| static const char *remove_outfile_spec_function (int, const char **); |
| static const char *version_compare_spec_function (int, const char **); |
| static const char *include_spec_function (int, const char **); |
| static const char *find_file_spec_function (int, const char **); |
| static const char *find_plugindir_spec_function (int, const char **); |
| static const char *print_asm_header_spec_function (int, const char **); |
| static const char *compare_debug_dump_opt_spec_function (int, const char **); |
| static const char *compare_debug_self_opt_spec_function (int, const char **); |
| static const char *compare_debug_auxbase_opt_spec_function (int, const char **); |
| static const char *pass_through_libs_spec_func (int, const char **); |
| static const char *replace_extension_spec_func (int, const char **); |
| static char *convert_white_space (char *); |
| |
| /* The Specs Language |
| |
| Specs are strings containing lines, each of which (if not blank) |
| is made up of a program name, and arguments separated by spaces. |
| The program name must be exact and start from root, since no path |
| is searched and it is unreliable to depend on the current working directory. |
| Redirection of input or output is not supported; the subprograms must |
| accept filenames saying what files to read and write. |
| |
| In addition, the specs can contain %-sequences to substitute variable text |
| or for conditional text. Here is a table of all defined %-sequences. |
| Note that spaces are not generated automatically around the results of |
| expanding these sequences; therefore, you can concatenate them together |
| or with constant text in a single argument. |
| |
| %% substitute one % into the program name or argument. |
| %i substitute the name of the input file being processed. |
| %b substitute the basename of the input file being processed. |
| This is the substring up to (and not including) the last period |
| and not including the directory unless -save-temps was specified |
| to put temporaries in a different location. |
| %B same as %b, but include the file suffix (text after the last period). |
| %gSUFFIX |
| substitute a file name that has suffix SUFFIX and is chosen |
| once per compilation, and mark the argument a la %d. To reduce |
| exposure to denial-of-service attacks, the file name is now |
| chosen in a way that is hard to predict even when previously |
| chosen file names are known. For example, `%g.s ... %g.o ... %g.s' |
| might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches |
| the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it |
| had been pre-processed. Previously, %g was simply substituted |
| with a file name chosen once per compilation, without regard |
| to any appended suffix (which was therefore treated just like |
| ordinary text), making such attacks more likely to succeed. |
| %|SUFFIX |
| like %g, but if -pipe is in effect, expands simply to "-". |
| %mSUFFIX |
| like %g, but if -pipe is in effect, expands to nothing. (We have both |
| %| and %m to accommodate differences between system assemblers; see |
| the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.) |
| %uSUFFIX |
| like %g, but generates a new temporary file name even if %uSUFFIX |
| was already seen. |
| %USUFFIX |
| substitutes the last file name generated with %uSUFFIX, generating a |
| new one if there is no such last file name. In the absence of any |
| %uSUFFIX, this is just like %gSUFFIX, except they don't share |
| the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s' |
| would involve the generation of two distinct file names, one |
| for each `%g.s' and another for each `%U.s'. Previously, %U was |
| simply substituted with a file name chosen for the previous %u, |
| without regard to any appended suffix. |
| %jSUFFIX |
| substitutes the name of the HOST_BIT_BUCKET, if any, and if it is |
| writable, and if save-temps is off; otherwise, substitute the name |
| of a temporary file, just like %u. This temporary file is not |
| meant for communication between processes, but rather as a junk |
| disposal mechanism. |
| %.SUFFIX |
| substitutes .SUFFIX for the suffixes of a matched switch's args when |
| it is subsequently output with %*. SUFFIX is terminated by the next |
| space or %. |
| %d marks the argument containing or following the %d as a |
| temporary file name, so that that file will be deleted if GCC exits |
| successfully. Unlike %g, this contributes no text to the argument. |
| %w marks the argument containing or following the %w as the |
| "output file" of this compilation. This puts the argument |
| into the sequence of arguments that %o will substitute later. |
| %V indicates that this compilation produces no "output file". |
| %W{...} |
| like %{...} but mark last argument supplied within |
| as a file to be deleted on failure. |
| %o substitutes the names of all the output files, with spaces |
| automatically placed around them. You should write spaces |
| around the %o as well or the results are undefined. |
| %o is for use in the specs for running the linker. |
| Input files whose names have no recognized suffix are not compiled |
| at all, but they are included among the output files, so they will |
| be linked. |
| %O substitutes the suffix for object files. Note that this is |
| handled specially when it immediately follows %g, %u, or %U |
| (with or without a suffix argument) because of the need for |
| those to form complete file names. The handling is such that |
| %O is treated exactly as if it had already been substituted, |
| except that %g, %u, and %U do not currently support additional |
| SUFFIX characters following %O as they would following, for |
| example, `.o'. |
| %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot |
| (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH |
| and -B options) and -imultilib as necessary. |
| %s current argument is the name of a library or startup file of some sort. |
| Search for that file in a standard list of directories |
| and substitute the full name found. |
| %eSTR Print STR as an error message. STR is terminated by a newline. |
| Use this when inconsistent options are detected. |
| %nSTR Print STR as a notice. STR is terminated by a newline. |
| %x{OPTION} Accumulate an option for %X. |
| %X Output the accumulated linker options specified by compilations. |
| %Y Output the accumulated assembler options specified by compilations. |
| %Z Output the accumulated preprocessor options specified by compilations. |
| %a process ASM_SPEC as a spec. |
| This allows config.h to specify part of the spec for running as. |
| %A process ASM_FINAL_SPEC as a spec. A capital A is actually |
| used here. This can be used to run a post-processor after the |
| assembler has done its job. |
| %D Dump out a -L option for each directory in startfile_prefixes. |
| If multilib_dir is set, extra entries are generated with it affixed. |
| %l process LINK_SPEC as a spec. |
| %L process LIB_SPEC as a spec. |
| %M Output multilib_os_dir. |
| %G process LIBGCC_SPEC as a spec. |
| %R Output the concatenation of target_system_root and |
| target_sysroot_suffix. |
| %S process STARTFILE_SPEC as a spec. A capital S is actually used here. |
| %E process ENDFILE_SPEC as a spec. A capital E is actually used here. |
| %C process CPP_SPEC as a spec. |
| %1 process CC1_SPEC as a spec. |
| %2 process CC1PLUS_SPEC as a spec. |
| %* substitute the variable part of a matched option. (See below.) |
| Note that each comma in the substituted string is replaced by |
| a single space. A space is appended after the last substition |
| unless there is more text in current sequence. |
| %<S remove all occurrences of -S from the command line. |
| Note - this command is position dependent. % commands in the |
| spec string before this one will see -S, % commands in the |
| spec string after this one will not. |
| %>S Similar to "%<S", but keep it in the GCC command line. |
| %<S* remove all occurrences of all switches beginning with -S from the |
| command line. |
| %:function(args) |
| Call the named function FUNCTION, passing it ARGS. ARGS is |
| first processed as a nested spec string, then split into an |
| argument vector in the usual fashion. The function returns |
| a string which is processed as if it had appeared literally |
| as part of the current spec. |
| %{S} substitutes the -S switch, if that switch was given to GCC. |
| If that switch was not specified, this substitutes nothing. |
| Here S is a metasyntactic variable. |
| %{S*} substitutes all the switches specified to GCC whose names start |
| with -S. This is used for -o, -I, etc; switches that take |
| arguments. GCC considers `-o foo' as being one switch whose |
| name starts with `o'. %{o*} would substitute this text, |
| including the space; thus, two arguments would be generated. |
| %{S*&T*} likewise, but preserve order of S and T options (the order |
| of S and T in the spec is not significant). Can be any number |
| of ampersand-separated variables; for each the wild card is |
| optional. Useful for CPP as %{D*&U*&A*}. |
| |
| %{S:X} substitutes X, if the -S switch was given to GCC. |
| %{!S:X} substitutes X, if the -S switch was NOT given to GCC. |
| %{S*:X} substitutes X if one or more switches whose names start |
| with -S was given to GCC. Normally X is substituted only |
| once, no matter how many such switches appeared. However, |
| if %* appears somewhere in X, then X will be substituted |
| once for each matching switch, with the %* replaced by the |
| part of that switch that matched the '*'. A space will be |
| appended after the last substition unless there is more |
| text in current sequence. |
| %{.S:X} substitutes X, if processing a file with suffix S. |
| %{!.S:X} substitutes X, if NOT processing a file with suffix S. |
| %{,S:X} substitutes X, if processing a file which will use spec S. |
| %{!,S:X} substitutes X, if NOT processing a file which will use spec S. |
| |
| %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be |
| combined with '!', '.', ',', and '*' as above binding stronger |
| than the OR. |
| If %* appears in X, all of the alternatives must be starred, and |
| only the first matching alternative is substituted. |
| %{%:function(args):X} |
| Call function named FUNCTION with args ARGS. If the function |
| returns non-NULL, then X is substituted, if it returns |
| NULL, it isn't substituted. |
| %{S:X; if S was given to GCC, substitutes X; |
| T:Y; else if T was given to GCC, substitutes Y; |
| :D} else substitutes D. There can be as many clauses as you need. |
| This may be combined with '.', '!', ',', '|', and '*' as above. |
| |
| %(Spec) processes a specification defined in a specs file as *Spec: |
| |
| The conditional text X in a %{S:X} or similar construct may contain |
| other nested % constructs or spaces, or even newlines. They are |
| processed as usual, as described above. Trailing white space in X is |
| ignored. White space may also appear anywhere on the left side of the |
| colon in these constructs, except between . or * and the corresponding |
| word. |
| |
| The -O, -f, -g, -m, and -W switches are handled specifically in these |
| constructs. If another value of -O or the negated form of a -f, -m, or |
| -W switch is found later in the command line, the earlier switch |
| value is ignored, except with {S*} where S is just one letter; this |
| passes all matching options. |
| |
| The character | at the beginning of the predicate text is used to indicate |
| that a command should be piped to the following command, but only if -pipe |
| is specified. |
| |
| Note that it is built into GCC which switches take arguments and which |
| do not. You might think it would be useful to generalize this to |
| allow each compiler's spec to say which switches take arguments. But |
| this cannot be done in a consistent fashion. GCC cannot even decide |
| which input files have been specified without knowing which switches |
| take arguments, and it must know which input files to compile in order |
| to tell which compilers to run. |
| |
| GCC also knows implicitly that arguments starting in `-l' are to be |
| treated as compiler output files, and passed to the linker in their |
| proper position among the other output files. */ |
| |
| /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */ |
| |
| /* config.h can define ASM_SPEC to provide extra args to the assembler |
| or extra switch-translations. */ |
| #ifndef ASM_SPEC |
| #define ASM_SPEC "" |
| #endif |
| |
| /* config.h can define ASM_FINAL_SPEC to run a post processor after |
| the assembler has run. */ |
| #ifndef ASM_FINAL_SPEC |
| #define ASM_FINAL_SPEC \ |
| "%{gsplit-dwarf: \n\ |
| objcopy --extract-dwo \ |
| %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \ |
| %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\ |
| objcopy --strip-dwo \ |
| %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \ |
| }" |
| #endif |
| |
| /* config.h can define CPP_SPEC to provide extra args to the C preprocessor |
| or extra switch-translations. */ |
| #ifndef CPP_SPEC |
| #define CPP_SPEC "" |
| #endif |
| |
| /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus |
| or extra switch-translations. */ |
| #ifndef CC1_SPEC |
| #define CC1_SPEC "" |
| #endif |
| |
| /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus |
| or extra switch-translations. */ |
| #ifndef CC1PLUS_SPEC |
| #define CC1PLUS_SPEC "" |
| #endif |
| |
| /* config.h can define LINK_SPEC to provide extra args to the linker |
| or extra switch-translations. */ |
| #ifndef LINK_SPEC |
| #define LINK_SPEC "" |
| #endif |
| |
| /* config.h can define LIB_SPEC to override the default libraries. */ |
| #ifndef LIB_SPEC |
| #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}" |
| #endif |
| |
| /* When using -fsplit-stack we need to wrap pthread_create, in order |
| to initialize the stack guard. We always use wrapping, rather than |
| shared library ordering, and we keep the wrapper function in |
| libgcc. This is not yet a real spec, though it could become one; |
| it is currently just stuffed into LINK_SPEC. FIXME: This wrapping |
| only works with GNU ld, gold and mcld. */ |
| #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}" |
| |
| #ifndef LIBASAN_SPEC |
| #define STATIC_LIBASAN_LIBS \ |
| " %{static-libasan:%:include(libsanitizer.spec)%(link_libasan)}" |
| #ifdef LIBASAN_EARLY_SPEC |
| #define LIBASAN_SPEC STATIC_LIBASAN_LIBS |
| #elif defined(HAVE_LD_STATIC_DYNAMIC) |
| #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \ |
| "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \ |
| STATIC_LIBASAN_LIBS |
| #else |
| #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS |
| #endif |
| #endif |
| |
| #ifndef LIBASAN_EARLY_SPEC |
| #define LIBASAN_EARLY_SPEC "" |
| #endif |
| |
| #ifndef LIBTSAN_SPEC |
| #define STATIC_LIBTSAN_LIBS \ |
| " %{static-libtsan:%:include(libsanitizer.spec)%(link_libtsan)}" |
| #ifdef LIBTSAN_EARLY_SPEC |
| #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS |
| #elif defined(HAVE_LD_STATIC_DYNAMIC) |
| #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \ |
| "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \ |
| STATIC_LIBTSAN_LIBS |
| #else |
| #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS |
| #endif |
| #endif |
| |
| #ifndef LIBTSAN_EARLY_SPEC |
| #define LIBTSAN_EARLY_SPEC "" |
| #endif |
| |
| #ifndef LIBLSAN_SPEC |
| #define STATIC_LIBLSAN_LIBS \ |
| " %{static-liblsan:%:include(libsanitizer.spec)%(link_liblsan)}" |
| #ifdef LIBLSAN_EARLY_SPEC |
| #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS |
| #elif defined(HAVE_LD_STATIC_DYNAMIC) |
| #define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \ |
| "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \ |
| STATIC_LIBLSAN_LIBS |
| #else |
| #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS |
| #endif |
| #endif |
| |
| #ifndef LIBLSAN_EARLY_SPEC |
| #define LIBLSAN_EARLY_SPEC "" |
| #endif |
| |
| #ifndef LIBUBSAN_SPEC |
| #define STATIC_LIBUBSAN_LIBS \ |
| " %{static-libubsan:%:include(libsanitizer.spec)%(link_libubsan)}" |
| #ifdef HAVE_LD_STATIC_DYNAMIC |
| #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \ |
| "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \ |
| STATIC_LIBUBSAN_LIBS |
| #else |
| #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS |
| #endif |
| #endif |
| |
| /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is |
| included. */ |
| #ifndef LIBGCC_SPEC |
| #if defined(REAL_LIBGCC_SPEC) |
| #define LIBGCC_SPEC REAL_LIBGCC_SPEC |
| #elif defined(LINK_LIBGCC_SPECIAL_1) |
| /* Have gcc do the search for libgcc.a. */ |
| #define LIBGCC_SPEC "libgcc.a%s" |
| #else |
| #define LIBGCC_SPEC "-lgcc" |
| #endif |
| #endif |
| |
| /* config.h can define STARTFILE_SPEC to override the default crt0 files. */ |
| #ifndef STARTFILE_SPEC |
| #define STARTFILE_SPEC \ |
| "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}" |
| #endif |
| |
| /* config.h can define ENDFILE_SPEC to override the default crtn files. */ |
| #ifndef ENDFILE_SPEC |
| #define ENDFILE_SPEC "" |
| #endif |
| |
| #ifndef LINKER_NAME |
| #define LINKER_NAME "collect2" |
| #endif |
| |
| #ifdef HAVE_AS_DEBUG_PREFIX_MAP |
| #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}" |
| #else |
| #define ASM_MAP "" |
| #endif |
| |
| /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g' |
| to the assembler. */ |
| #ifndef ASM_DEBUG_SPEC |
| # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \ |
| && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG) |
| # define ASM_DEBUG_SPEC \ |
| (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \ |
| ? "%{!g0:%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \ |
| : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP) |
| # else |
| # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG) |
| # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP |
| # endif |
| # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) |
| # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP |
| # endif |
| # endif |
| #endif |
| #ifndef ASM_DEBUG_SPEC |
| # define ASM_DEBUG_SPEC "" |
| #endif |
| |
| /* Here is the spec for running the linker, after compiling all files. */ |
| |
| /* This is overridable by the target in case they need to specify the |
| -lgcc and -lc order specially, yet not require them to override all |
| of LINK_COMMAND_SPEC. */ |
| #ifndef LINK_GCC_C_SEQUENCE_SPEC |
| #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G" |
| #endif |
| |
| #ifndef LINK_SSP_SPEC |
| #ifdef TARGET_LIBC_PROVIDES_SSP |
| #define LINK_SSP_SPEC "%{fstack-protector:}" |
| #else |
| #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-strong|fstack-protector-all:-lssp_nonshared -lssp}" |
| #endif |
| #endif |
| |
| #ifndef LINK_PIE_SPEC |
| #ifdef HAVE_LD_PIE |
| #define LINK_PIE_SPEC "%{pie:-pie} %{no-pie:}" |
| #else |
| #define LINK_PIE_SPEC "%{pie:} %{no-pie:}" |
| #endif |
| #endif |
| |
| #ifndef LINK_BUILDID_SPEC |
| # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID) |
| # define LINK_BUILDID_SPEC "%{!r:--build-id} " |
| # endif |
| #endif |
| |
| /* Conditional to test whether the LTO plugin is used or not. |
| FIXME: For slim LTO we will need to enable plugin unconditionally. This |
| still cause problems with PLUGIN_LD != LD and when plugin is built but |
| not useable. For GCC 4.6 we don't support slim LTO and thus we can enable |
| plugin only when LTO is enabled. We still honor explicit |
| -fuse-linker-plugin if the linker used understands -plugin. */ |
| |
| /* The linker has some plugin support. */ |
| #if HAVE_LTO_PLUGIN > 0 |
| /* The linker used has full plugin support, use LTO plugin by default. */ |
| #if HAVE_LTO_PLUGIN == 2 |
| #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto" |
| #define PLUGIN_COND_CLOSE "}" |
| #else |
| /* The linker used has limited plugin support, use LTO plugin with explicit |
| -fuse-linker-plugin. */ |
| #define PLUGIN_COND "fuse-linker-plugin" |
| #define PLUGIN_COND_CLOSE "" |
| #endif |
| #define LINK_PLUGIN_SPEC \ |
| "%{"PLUGIN_COND": \ |
| -plugin %(linker_plugin_file) \ |
| -plugin-opt=%(lto_wrapper) \ |
| -plugin-opt=-fresolution=%u.res \ |
| %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \ |
| }"PLUGIN_COND_CLOSE |
| #else |
| /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */ |
| #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\ |
| %e-fuse-linker-plugin is not supported in this configuration}" |
| #endif |
| |
| /* Linker command line options for -fsanitize= early on the command line. */ |
| #ifndef SANITIZER_EARLY_SPEC |
| #define SANITIZER_EARLY_SPEC "\ |
| %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \ |
| %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "} \ |
| %{%:sanitize(leak):" LIBLSAN_EARLY_SPEC "}}}" |
| #endif |
| |
| /* Linker command line options for -fsanitize= late on the command line. */ |
| #ifndef SANITIZER_SPEC |
| #define SANITIZER_SPEC "\ |
| %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\ |
| %{static:%ecannot specify -static with -fsanitize=address}}\ |
| %{%:sanitize(thread):" LIBTSAN_SPEC "\ |
| %{!pie:%{!shared:%e-fsanitize=thread linking must be done with -pie or -shared}}}\ |
| %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\ |
| %{%:sanitize(leak):" LIBLSAN_SPEC "}}}" |
| #endif |
| |
| /* This is the spec to use, once the code for creating the vtable |
| verification runtime library, libvtv.so, has been created. Currently |
| the vtable verification runtime functions are in libstdc++, so we use |
| the spec just below this one. */ |
| #ifndef VTABLE_VERIFICATION_SPEC |
| #define VTABLE_VERIFICATION_SPEC "\ |
| %{!nostdlib:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\ |
| %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}" |
| #endif |
| |
| #if POISON_SYSTEM_DIRECTORIES_DEFAULT |
| # define POISON_SYSTEM_DIRECTORIES_DEFAULT_SPEC "\ |
| %{!Wpoison-system-directories:%{!Wno-poison-system-directories:\ |
| --warn-poison-system-directories}}" |
| #else |
| # define POISON_SYSTEM_DIRECTORIES_DEFAULT_SPEC "" |
| #endif |
| #define POISON_SYSTEM_DIRECTORIES_SPEC \ |
| POISON_SYSTEM_DIRECTORIES_DEFAULT_SPEC " \ |
| %{Wpoison-system-directories:--warn-poison-system-directories}\ |
| %{Wno-poison-system-directories:--no-warn-poison-system-directories}\ |
| %{Werror=poison-system-directories:--error-poison-system-directories}" |
| |
| /* -u* was put back because both BSD and SysV seem to support it. */ |
| /* %{static:} simply prevents an error message if the target machine |
| doesn't handle -static. */ |
| /* We want %{T*} after %{L*} and %D so that it can be used to specify linker |
| scripts which exist in user specified directories, or in standard |
| directories. */ |
| /* We pass any -flto flags on to the linker, which is expected |
| to understand them. In practice, this means it had better be collect2. */ |
| /* %{e*} includes -export-dynamic; see comment in common.opt. */ |
| #ifndef LINK_COMMAND_SPEC |
| #define LINK_COMMAND_SPEC "\ |
| %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ |
| %(linker) " \ |
| LINK_PLUGIN_SPEC \ |
| "%{freorder-functions=*: \ |
| -plugin %(func_reorder_linker_plugin_file) \ |
| -plugin-opt=%(func_reorder_linker_plugin_opt)}" \ |
| "%{flto|flto=*:%<fcompare-debug*} \ |
| %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \ |
| "%{fuse-ld=*:-fuse-ld=%*}\ |
| %X %{o*} %{e*} %{N} %{n} %{r}\ |
| %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} " VTABLE_VERIFICATION_SPEC " \ |
| " POISON_SYSTEM_DIRECTORIES_SPEC " \ |
| %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\ |
| %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\ |
| %{fcilkplus:%:include(libcilkrts.spec)%(link_cilkrts)}\ |
| %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\ |
| %(mflib) " STACK_SPLIT_SPEC "\ |
| %{fprofile-arcs|fprofile-generate*|coverage:-lgcov " \ |
| LINUX_OR_ANDROID_LD("", "-lgcc") "}" SANITIZER_SPEC " \ |
| %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\ |
| %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}" |
| #endif |
| |
| #ifndef LINK_LIBGCC_SPEC |
| /* Generate -L options for startfile prefix list. */ |
| # define LINK_LIBGCC_SPEC "%D" |
| #endif |
| |
| #ifndef STARTFILE_PREFIX_SPEC |
| # define STARTFILE_PREFIX_SPEC "" |
| #endif |
| |
| #ifndef SYSROOT_SPEC |
| # define SYSROOT_SPEC "--sysroot=%R" |
| #endif |
| |
| #ifndef SYSROOT_SUFFIX_SPEC |
| # define SYSROOT_SUFFIX_SPEC "" |
| #endif |
| |
| #ifndef SYSROOT_HEADERS_SUFFIX_SPEC |
| # define SYSROOT_HEADERS_SUFFIX_SPEC "" |
| #endif |
| |
| static const char *asm_debug = ASM_DEBUG_SPEC; |
| static const char *cpp_spec = CPP_SPEC; |
| static const char *cc1_spec = CC1_SPEC; |
| static const char *cc1plus_spec = CC1PLUS_SPEC; |
| static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC; |
| static const char *link_ssp_spec = LINK_SSP_SPEC; |
| static const char *asm_spec = ASM_SPEC; |
| static const char *asm_final_spec = ASM_FINAL_SPEC; |
| static const char *link_spec = LINK_SPEC; |
| static const char *lib_spec = LIB_SPEC; |
| static const char *link_gomp_spec = ""; |
| static const char *libgcc_spec = LIBGCC_SPEC; |
| static const char *endfile_spec = ENDFILE_SPEC; |
| static const char *startfile_spec = STARTFILE_SPEC; |
| static const char *linker_name_spec = LINKER_NAME; |
| static const char *linker_plugin_file_spec = ""; |
| static const char *func_reorder_linker_plugin_file_spec = ""; |
| static const char *func_reorder_linker_plugin_opt = ""; |
| static const char *lto_wrapper_spec = ""; |
| static const char *lto_gcc_spec = ""; |
| static const char *link_command_spec = LINK_COMMAND_SPEC; |
| static const char *link_libgcc_spec = LINK_LIBGCC_SPEC; |
| static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC; |
| static const char *sysroot_spec = SYSROOT_SPEC; |
| static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC; |
| static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC; |
| static const char *self_spec = ""; |
| |
| /* Standard options to cpp, cc1, and as, to reduce duplication in specs. |
| There should be no need to override these in target dependent files, |
| but we need to copy them to the specs file so that newer versions |
| of the GCC driver can correctly drive older tool chains with the |
| appropriate -B options. */ |
| |
| /* When cpplib handles traditional preprocessing, get rid of this, and |
| call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so |
| that we default the front end language better. */ |
| static const char *trad_capable_cpp = |
| "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}"; |
| |
| /* We don't wrap .d files in %W{} since a missing .d file, and |
| therefore no dependency entry, confuses make into thinking a .o |
| file that happens to exist is up-to-date. */ |
| static const char *cpp_unique_options = |
| "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\ |
| %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\ |
| %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\ |
| %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\ |
| %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\ |
| %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\ |
| %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\ |
| %{H} %C %{D*&U*&A*} %{i*} %Z %i\ |
| %{E|M|MM:%W{o*}}"; |
| |
| /* This contains cpp options which are common with cc1_options and are passed |
| only when preprocessing only to avoid duplication. We pass the cc1 spec |
| options to the preprocessor so that it the cc1 spec may manipulate |
| options used to set target flags. Those special target flags settings may |
| in turn cause preprocessor symbols to be defined specially. */ |
| static const char *cpp_options = |
| "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\ |
| %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\ |
| %{undef} %{save-temps*:-fpch-preprocess}"; |
| |
| /* This contains cpp options which are not passed when the preprocessor |
| output will be used by another program. */ |
| static const char *cpp_debug_options = "%{d*}"; |
| |
| /* NB: This is shared amongst all front-ends, except for Ada. */ |
| static const char *cc1_options = |
| "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\ |
| %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\ |
| %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\ |
| %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \ |
| %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \ |
| %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\ |
| %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\ |
| %{Qn:-fno-ident} %{Qy:} %{-help:--help}\ |
| %{-target-help:--target-help}\ |
| %{-version:--version}\ |
| %{-help=*:--help=%*}\ |
| %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\ |
| %{fsyntax-only:-o %j} %{-param*}\ |
| %{coverage:-fprofile-arcs -ftest-coverage -fno-early-inlining}"; |
| |
| static const char *asm_options = |
| "%{-target-help:%:print-asm-header()} " |
| #if HAVE_GNU_AS |
| /* If GNU AS is used, then convert -w (no warnings), -I, and -v |
| to the assembler equivalents. */ |
| "%{v} %{w:-W} %{I*} " |
| #endif |
| "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}"; |
| |
| static const char *invoke_as = |
| #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT |
| "%{!fwpa*:\ |
| %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\ |
| %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\ |
| }"; |
| #else |
| "%{!fwpa*:\ |
| %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\ |
| %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\ |
| }"; |
| #endif |
| |
| /* Some compilers have limits on line lengths, and the multilib_select |
| and/or multilib_matches strings can be very long, so we build them at |
| run time. */ |
| static struct obstack multilib_obstack; |
| static const char *multilib_select; |
| static const char *multilib_matches; |
| static const char *multilib_defaults; |
| static const char *multilib_exclusions; |
| static const char *multilib_reuse; |
| |
| /* Check whether a particular argument is a default argument. */ |
| |
| #ifndef MULTILIB_DEFAULTS |
| #define MULTILIB_DEFAULTS { "" } |
| #endif |
| |
| static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS; |
| |
| #ifndef DRIVER_SELF_SPECS |
| #define DRIVER_SELF_SPECS "" |
| #endif |
| |
| /* Linking to libgomp implies pthreads. This is particularly important |
| for targets that use different start files and suchlike. */ |
| #ifndef GOMP_SELF_SPECS |
| #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}" |
| #endif |
| |
| /* Likewise for -fgnu-tm. */ |
| #ifndef GTM_SELF_SPECS |
| #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}" |
| #endif |
| |
| /* Likewise for -fcilkplus. */ |
| #ifndef CILK_SELF_SPECS |
| #define CILK_SELF_SPECS "%{fcilkplus: -pthread}" |
| #endif |
| |
| static const char *const driver_self_specs[] = { |
| "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns", |
| DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS, |
| CILK_SELF_SPECS |
| }; |
| |
| #ifndef OPTION_DEFAULT_SPECS |
| #define OPTION_DEFAULT_SPECS { "", "" } |
| #endif |
| |
| struct default_spec |
| { |
| const char *name; |
| const char *spec; |
| }; |
| |
| static const struct default_spec |
| option_default_specs[] = { OPTION_DEFAULT_SPECS }; |
| |
| struct user_specs |
| { |
| struct user_specs *next; |
| const char *filename; |
| }; |
| |
| static struct user_specs *user_specs_head, *user_specs_tail; |
| |
| |
| /* Record the mapping from file suffixes for compilation specs. */ |
| |
| struct compiler |
| { |
| const char *suffix; /* Use this compiler for input files |
| whose names end in this suffix. */ |
| |
| const char *spec; /* To use this compiler, run this spec. */ |
| |
| const char *cpp_spec; /* If non-NULL, substitute this spec |
| for `%C', rather than the usual |
| cpp_spec. */ |
| const int combinable; /* If nonzero, compiler can deal with |
| multiple source files at once (IMA). */ |
| const int needs_preprocessing; /* If nonzero, source files need to |
| be run through a preprocessor. */ |
| }; |
| |
| /* Pointer to a vector of `struct compiler' that gives the spec for |
| compiling a file, based on its suffix. |
| A file that does not end in any of these suffixes will be passed |
| unchanged to the loader and nothing else will be done to it. |
| |
| An entry containing two 0s is used to terminate the vector. |
| |
| If multiple entries match a file, the last matching one is used. */ |
| |
| static struct compiler *compilers; |
| |
| /* Number of entries in `compilers', not counting the null terminator. */ |
| |
| static int n_compilers; |
| |
| /* The default list of file name suffixes and their compilation specs. */ |
| |
| static const struct compiler default_compilers[] = |
| { |
| /* Add lists of suffixes of known languages here. If those languages |
| were not present when we built the driver, we will hit these copies |
| and be given a more meaningful error than "file not used since |
| linking is not done". */ |
| {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0}, |
| {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0}, |
| {".mii", "#Objective-C++", 0, 0, 0}, |
| {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0}, |
| {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0}, |
| {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0}, |
| {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0}, |
| {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0}, |
| {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0}, |
| {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0}, |
| {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0}, |
| {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0}, |
| {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0}, |
| {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0}, |
| {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0}, |
| {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0}, |
| {".r", "#Ratfor", 0, 0, 0}, |
| {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0}, |
| {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0}, |
| {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0}, |
| {".go", "#Go", 0, 1, 0}, |
| /* Next come the entries for C. */ |
| {".c", "@c", 0, 0, 1}, |
| {"@c", |
| /* cc1 has an integrated ISO C preprocessor. We should invoke the |
| external preprocessor if -save-temps is given. */ |
| "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ |
| %{!E:%{!M:%{!MM:\ |
| %{traditional:\ |
| %eGNU C no longer supports -traditional without -E}\ |
| %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ |
| %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\ |
| cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \ |
| %(cc1_options)}\ |
| %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\ |
| cc1 %(cpp_unique_options) %(cc1_options)}}}\ |
| %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1}, |
| {"-", |
| "%{!E:%e-E or -x required when input is from standard input}\ |
| %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0}, |
| {".h", "@c-header", 0, 0, 0}, |
| {"@c-header", |
| /* cc1 has an integrated ISO C preprocessor. We should invoke the |
| external preprocessor if -save-temps is given. */ |
| "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ |
| %{!E:%{!M:%{!MM:\ |
| %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ |
| %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\ |
| cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \ |
| %(cc1_options)\ |
| %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\ |
| %W{o*:--output-pch=%*}}%V}\ |
| %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\ |
| cc1 %(cpp_unique_options) %(cc1_options)\ |
| %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\ |
| %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0}, |
| {".i", "@cpp-output", 0, 0, 0}, |
| {"@cpp-output", |
| "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0}, |
| {".s", "@assembler", 0, 0, 0}, |
| {"@assembler", |
| "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0}, |
| {".sx", "@assembler-with-cpp", 0, 0, 0}, |
| {".S", "@assembler-with-cpp", 0, 0, 0}, |
| {"@assembler-with-cpp", |
| #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT |
| "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\ |
| %{E|M|MM:%(cpp_debug_options)}\ |
| %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ |
| as %(asm_debug) %(asm_options) %|.s %A }}}}" |
| #else |
| "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\ |
| %{E|M|MM:%(cpp_debug_options)}\ |
| %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ |
| as %(asm_debug) %(asm_options) %m.s %A }}}}" |
| #endif |
| , 0, 0, 0}, |
| |
| #include "specs.h" |
| /* Mark end of table. */ |
| {0, 0, 0, 0, 0} |
| }; |
| |
| /* Number of elements in default_compilers, not counting the terminator. */ |
| |
| static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1; |
| |
| typedef char *char_p; /* For DEF_VEC_P. */ |
| |
| /* A vector of options to give to the linker. |
| These options are accumulated by %x, |
| and substituted into the linker command with %X. */ |
| static vec<char_p> linker_options; |
| |
| /* A vector of options to give to the assembler. |
| These options are accumulated by -Wa, |
| and substituted into the assembler command with %Y. */ |
| static vec<char_p> assembler_options; |
| |
| /* A vector of options to give to the preprocessor. |
| These options are accumulated by -Wp, |
| and substituted into the preprocessor command with %Z. */ |
| static vec<char_p> preprocessor_options; |
| |
| static char * |
| skip_whitespace (char *p) |
| { |
| while (1) |
| { |
| /* A fully-blank line is a delimiter in the SPEC file and shouldn't |
| be considered whitespace. */ |
| if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n') |
| return p + 1; |
| else if (*p == '\n' || *p == ' ' || *p == '\t') |
| p++; |
| else if (*p == '#') |
| { |
| while (*p != '\n') |
| p++; |
| p++; |
| } |
| else |
| break; |
| } |
| |
| return p; |
| } |
| /* Structures to keep track of prefixes to try when looking for files. */ |
| |
| struct prefix_list |
| { |
| const char *prefix; /* String to prepend to the path. */ |
| struct prefix_list *next; /* Next in linked list. */ |
| int require_machine_suffix; /* Don't use without machine_suffix. */ |
| /* 2 means try both machine_suffix and just_machine_suffix. */ |
| int priority; /* Sort key - priority within list. */ |
| int os_multilib; /* 1 if OS multilib scheme should be used, |
| 0 for GCC multilib scheme. */ |
| }; |
| |
| struct path_prefix |
| { |
| struct prefix_list *plist; /* List of prefixes to try */ |
| int max_len; /* Max length of a prefix in PLIST */ |
| const char *name; /* Name of this list (used in config stuff) */ |
| }; |
| |
| /* List of prefixes to try when looking for executables. */ |
| |
| static struct path_prefix exec_prefixes = { 0, 0, "exec" }; |
| |
| /* List of prefixes to try when looking for startup (crt0) files. */ |
| |
| static struct path_prefix startfile_prefixes = { 0, 0, "startfile" }; |
| |
| /* List of prefixes to try when looking for include files. */ |
| |
| static struct path_prefix include_prefixes = { 0, 0, "include" }; |
| |
| /* Suffix to attach to directories searched for commands. |
| This looks like `MACHINE/VERSION/'. */ |
| |
| static const char *machine_suffix = 0; |
| |
| /* Suffix to attach to directories searched for commands. |
| This is just `MACHINE/'. */ |
| |
| static const char *just_machine_suffix = 0; |
| |
| /* Adjusted value of GCC_EXEC_PREFIX envvar. */ |
| |
| static const char *gcc_exec_prefix; |
| |
| /* Adjusted value of standard_libexec_prefix. */ |
| |
| static const char *gcc_libexec_prefix; |
| |
| /* Default prefixes to attach to command names. */ |
| |
| #ifndef STANDARD_STARTFILE_PREFIX_1 |
| #define STANDARD_STARTFILE_PREFIX_1 "/lib/" |
| #endif |
| #ifndef STANDARD_STARTFILE_PREFIX_2 |
| #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/" |
| #endif |
| |
| #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */ |
| #undef MD_EXEC_PREFIX |
| #undef MD_STARTFILE_PREFIX |
| #undef MD_STARTFILE_PREFIX_1 |
| #endif |
| |
| /* If no prefixes defined, use the null string, which will disable them. */ |
| #ifndef MD_EXEC_PREFIX |
| #define MD_EXEC_PREFIX "" |
| #endif |
| #ifndef MD_STARTFILE_PREFIX |
| #define MD_STARTFILE_PREFIX "" |
| #endif |
| #ifndef MD_STARTFILE_PREFIX_1 |
| #define MD_STARTFILE_PREFIX_1 "" |
| #endif |
| |
| /* These directories are locations set at configure-time based on the |
| --prefix option provided to configure. Their initializers are |
| defined in Makefile.in. These paths are not *directly* used when |
| gcc_exec_prefix is set because, in that case, we know where the |
| compiler has been installed, and use paths relative to that |
| location instead. */ |
| static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX; |
| static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX; |
| static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX; |
| static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX; |
| |
| /* For native compilers, these are well-known paths containing |
| components that may be provided by the system. For cross |
| compilers, these paths are not used. */ |
| static const char *md_exec_prefix = MD_EXEC_PREFIX; |
| static const char *md_startfile_prefix = MD_STARTFILE_PREFIX; |
| static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1; |
| static const char *const standard_startfile_prefix_1 |
| = STANDARD_STARTFILE_PREFIX_1; |
| static const char *const standard_startfile_prefix_2 |
| = STANDARD_STARTFILE_PREFIX_2; |
| |
| /* A relative path to be used in finding the location of tools |
| relative to the driver. */ |
| static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX; |
| |
| /* Subdirectory to use for locating libraries. Set by |
| set_multilib_dir based on the compilation options. */ |
| |
| static const char *multilib_dir; |
| |
| /* Subdirectory to use for locating libraries in OS conventions. Set by |
| set_multilib_dir based on the compilation options. */ |
| |
| static const char *multilib_os_dir; |
| |
| /* Subdirectory to use for locating libraries in multiarch conventions. Set by |
| set_multilib_dir based on the compilation options. */ |
| |
| static const char *multiarch_dir; |
| |
| /* Structure to keep track of the specs that have been defined so far. |
| These are accessed using %(specname) in a compiler or link |
| spec. */ |
| |
| struct spec_list |
| { |
| /* The following 2 fields must be first */ |
| /* to allow EXTRA_SPECS to be initialized */ |
| const char *name; /* name of the spec. */ |
| const char *ptr; /* available ptr if no static pointer */ |
| |
| /* The following fields are not initialized */ |
| /* by EXTRA_SPECS */ |
| const char **ptr_spec; /* pointer to the spec itself. */ |
| struct spec_list *next; /* Next spec in linked list. */ |
| int name_len; /* length of the name */ |
| bool user_p; /* whether string come from file spec. */ |
| bool alloc_p; /* whether string was allocated */ |
| }; |
| |
| #define INIT_STATIC_SPEC(NAME,PTR) \ |
| { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false } |
| |
| /* List of statically defined specs. */ |
| static struct spec_list static_specs[] = |
| { |
| INIT_STATIC_SPEC ("asm", &asm_spec), |
| INIT_STATIC_SPEC ("asm_debug", &asm_debug), |
| INIT_STATIC_SPEC ("asm_final", &asm_final_spec), |
| INIT_STATIC_SPEC ("asm_options", &asm_options), |
| INIT_STATIC_SPEC ("invoke_as", &invoke_as), |
| INIT_STATIC_SPEC ("cpp", &cpp_spec), |
| INIT_STATIC_SPEC ("cpp_options", &cpp_options), |
| INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options), |
| INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options), |
| INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp), |
| INIT_STATIC_SPEC ("cc1", &cc1_spec), |
| INIT_STATIC_SPEC ("cc1_options", &cc1_options), |
| INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec), |
| INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec), |
| INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec), |
| INIT_STATIC_SPEC ("endfile", &endfile_spec), |
| INIT_STATIC_SPEC ("link", &link_spec), |
| INIT_STATIC_SPEC ("lib", &lib_spec), |
| INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec), |
| INIT_STATIC_SPEC ("libgcc", &libgcc_spec), |
| INIT_STATIC_SPEC ("startfile", &startfile_spec), |
| INIT_STATIC_SPEC ("cross_compile", &cross_compile), |
| INIT_STATIC_SPEC ("version", &compiler_version), |
| INIT_STATIC_SPEC ("multilib", &multilib_select), |
| INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults), |
| INIT_STATIC_SPEC ("multilib_extra", &multilib_extra), |
| INIT_STATIC_SPEC ("multilib_matches", &multilib_matches), |
| INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions), |
| INIT_STATIC_SPEC ("multilib_options", &multilib_options), |
| INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse), |
| INIT_STATIC_SPEC ("linker", &linker_name_spec), |
| INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec), |
| INIT_STATIC_SPEC ("func_reorder_linker_plugin_file", |
| &func_reorder_linker_plugin_file_spec), |
| INIT_STATIC_SPEC ("func_reorder_linker_plugin_opt", |
| &func_reorder_linker_plugin_opt), |
| INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec), |
| INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec), |
| INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec), |
| INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix), |
| INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix), |
| INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1), |
| INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec), |
| INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec), |
| INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec), |
| INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec), |
| INIT_STATIC_SPEC ("self_spec", &self_spec), |
| }; |
| |
| #ifdef EXTRA_SPECS /* additional specs needed */ |
| /* Structure to keep track of just the first two args of a spec_list. |
| That is all that the EXTRA_SPECS macro gives us. */ |
| struct spec_list_1 |
| { |
| const char *const name; |
| const char *const ptr; |
| }; |
| |
| static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS }; |
| static struct spec_list *extra_specs = (struct spec_list *) 0; |
| #endif |
| |
| /* List of dynamically allocates specs that have been defined so far. */ |
| |
| static struct spec_list *specs = (struct spec_list *) 0; |
| |
| /* List of static spec functions. */ |
| |
| static const struct spec_function static_spec_functions[] = |
| { |
| { "getenv", getenv_spec_function }, |
| { "if-exists", if_exists_spec_function }, |
| { "if-exists-else", if_exists_else_spec_function }, |
| { "sanitize", sanitize_spec_function }, |
| { "replace-outfile", replace_outfile_spec_function }, |
| { "remove-outfile", remove_outfile_spec_function }, |
| { "version-compare", version_compare_spec_function }, |
| { "include", include_spec_function }, |
| { "find-file", find_file_spec_function }, |
| { "find-plugindir", find_plugindir_spec_function }, |
| { "print-asm-header", print_asm_header_spec_function }, |
| { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function }, |
| { "compare-debug-self-opt", compare_debug_self_opt_spec_function }, |
| { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function }, |
| { "pass-through-libs", pass_through_libs_spec_func }, |
| { "replace-extension", replace_extension_spec_func }, |
| #ifdef EXTRA_SPEC_FUNCTIONS |
| EXTRA_SPEC_FUNCTIONS |
| #endif |
| { 0, 0 } |
| }; |
| |
| static int processing_spec_function; |
| |
| /* Add appropriate libgcc specs to OBSTACK, taking into account |
| various permutations of -shared-libgcc, -shared, and such. */ |
| |
| #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) |
| |
| #ifndef USE_LD_AS_NEEDED |
| #define USE_LD_AS_NEEDED 0 |
| #endif |
| |
| static void |
| init_gcc_specs (struct obstack *obstack, const char *shared_name, |
| const char *static_name, const char *eh_name) |
| { |
| char *buf; |
| |
| buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}" |
| "%{!static:%{!static-libgcc:" |
| #if USE_LD_AS_NEEDED |
| "%{!shared-libgcc:", |
| static_name, " " LD_AS_NEEDED_OPTION " ", |
| shared_name, " " LD_NO_AS_NEEDED_OPTION |
| "}" |
| "%{shared-libgcc:", |
| shared_name, "%{!shared: ", static_name, "}" |
| "}" |
| #else |
| "%{!shared:" |
| "%{!shared-libgcc:", static_name, " ", eh_name, "}" |
| "%{shared-libgcc:", shared_name, " ", static_name, "}" |
| "}" |
| #ifdef LINK_EH_SPEC |
| "%{shared:" |
| "%{shared-libgcc:", shared_name, "}" |
| "%{!shared-libgcc:", static_name, "}" |
| "}" |
| #else |
| "%{shared:", shared_name, "}" |
| #endif |
| #endif |
| "}}", NULL); |
| |
| obstack_grow (obstack, buf, strlen (buf)); |
| free (buf); |
| } |
| #endif /* ENABLE_SHARED_LIBGCC */ |
| |
| /* Initialize the specs lookup routines. */ |
| |
| static void |
| init_spec (void) |
| { |
| struct spec_list *next = (struct spec_list *) 0; |
| struct spec_list *sl = (struct spec_list *) 0; |
| int i; |
| |
| if (specs) |
| return; /* Already initialized. */ |
| |
| if (verbose_flag) |
| fnotice (stderr, "Using built-in specs.\n"); |
| |
| #ifdef EXTRA_SPECS |
| extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1)); |
| |
| for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--) |
| { |
| sl = &extra_specs[i]; |
| sl->name = extra_specs_1[i].name; |
| sl->ptr = extra_specs_1[i].ptr; |
| sl->next = next; |
| sl->name_len = strlen (sl->name); |
| sl->ptr_spec = &sl->ptr; |
| next = sl; |
| } |
| #endif |
| |
| for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) |
| { |
| sl = &static_specs[i]; |
| sl->next = next; |
| next = sl; |
| } |
| |
| #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) |
| /* ??? If neither -shared-libgcc nor --static-libgcc was |
| seen, then we should be making an educated guess. Some proposed |
| heuristics for ELF include: |
| |
| (1) If "-Wl,--export-dynamic", then it's a fair bet that the |
| program will be doing dynamic loading, which will likely |
| need the shared libgcc. |
| |
| (2) If "-ldl", then it's also a fair bet that we're doing |
| dynamic loading. |
| |
| (3) For each ET_DYN we're linking against (either through -lfoo |
| or /some/path/foo.so), check to see whether it or one of |
| its dependencies depends on a shared libgcc. |
| |
| (4) If "-shared" |
| |
| If the runtime is fixed to look for program headers instead |
| of calling __register_frame_info at all, for each object, |
| use the shared libgcc if any EH symbol referenced. |
| |
| If crtstuff is fixed to not invoke __register_frame_info |
| automatically, for each object, use the shared libgcc if |
| any non-empty unwind section found. |
| |
| Doing any of this probably requires invoking an external program to |
| do the actual object file scanning. */ |
| { |
| const char *p = libgcc_spec; |
| int in_sep = 1; |
| |
| /* Transform the extant libgcc_spec into one that uses the shared libgcc |
| when given the proper command line arguments. */ |
| while (*p) |
| { |
| if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0) |
| { |
| init_gcc_specs (&obstack, |
| "-lgcc_s" |
| #ifdef USE_LIBUNWIND_EXCEPTIONS |
| " -lunwind" |
| #endif |
| , |
| "-lgcc", |
| "-lgcc_eh" |
| #ifdef USE_LIBUNWIND_EXCEPTIONS |
| # ifdef HAVE_LD_STATIC_DYNAMIC |
| " %{!static:" LD_STATIC_OPTION "} -lunwind" |
| " %{!static:" LD_DYNAMIC_OPTION "}" |
| # else |
| " -lunwind" |
| # endif |
| #endif |
| ); |
| |
| p += 5; |
| in_sep = 0; |
| } |
| else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0) |
| { |
| /* Ug. We don't know shared library extensions. Hope that |
| systems that use this form don't do shared libraries. */ |
| init_gcc_specs (&obstack, |
| "-lgcc_s", |
| "libgcc.a%s", |
| "libgcc_eh.a%s" |
| #ifdef USE_LIBUNWIND_EXCEPTIONS |
| " -lunwind" |
| #endif |
| ); |
| p += 10; |
| in_sep = 0; |
| } |
| else |
| { |
| obstack_1grow (&obstack, *p); |
| in_sep = (*p == ' '); |
| p += 1; |
| } |
| } |
| |
| obstack_1grow (&obstack, '\0'); |
| libgcc_spec = XOBFINISH (&obstack, const char *); |
| } |
| #endif |
| #ifdef USE_AS_TRADITIONAL_FORMAT |
| /* Prepend "--traditional-format" to whatever asm_spec we had before. */ |
| { |
| static const char tf[] = "--traditional-format "; |
| obstack_grow (&obstack, tf, sizeof (tf) - 1); |
| obstack_grow0 (&obstack, asm_spec, strlen (asm_spec)); |
| asm_spec = XOBFINISH (&obstack, const char *); |
| } |
| #endif |
| |
| #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \ |
| defined LINKER_HASH_STYLE |
| # ifdef LINK_BUILDID_SPEC |
| /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */ |
| obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof (LINK_BUILDID_SPEC) - 1); |
| # endif |
| # ifdef LINK_EH_SPEC |
| /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */ |
| obstack_grow (&obstack, LINK_EH_SPEC, sizeof (LINK_EH_SPEC) - 1); |
| # endif |
| # ifdef LINKER_HASH_STYLE |
| /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had |
| before. */ |
| { |
| static const char hash_style[] = "--hash-style="; |
| obstack_grow (&obstack, hash_style, sizeof (hash_style) - 1); |
| obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof (LINKER_HASH_STYLE) - 1); |
| obstack_1grow (&obstack, ' '); |
| } |
| # endif |
| obstack_grow0 (&obstack, link_spec, strlen (link_spec)); |
| link_spec = XOBFINISH (&obstack, const char *); |
| #endif |
| |
| specs = sl; |
| } |
| |
| /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is |
| removed; If the spec starts with a + then SPEC is added to the end of the |
| current spec. */ |
| |
| static void |
| set_spec (const char *name, const char *spec, bool user_p) |
| { |
| struct spec_list *sl; |
| const char *old_spec; |
| int name_len = strlen (name); |
| int i; |
| |
| /* If this is the first call, initialize the statically allocated specs. */ |
| if (!specs) |
| { |
| struct spec_list *next = (struct spec_list *) 0; |
| for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) |
| { |
| sl = &static_specs[i]; |
| sl->next = next; |
| next = sl; |
| } |
| specs = sl; |
| } |
| |
| /* See if the spec already exists. */ |
| for (sl = specs; sl; sl = sl->next) |
| if (name_len == sl->name_len && !strcmp (sl->name, name)) |
| break; |
| |
| if (!sl) |
| { |
| /* Not found - make it. */ |
| sl = XNEW (struct spec_list); |
| sl->name = xstrdup (name); |
| sl->name_len = name_len; |
| sl->ptr_spec = &sl->ptr; |
| sl->alloc_p = 0; |
| *(sl->ptr_spec) = ""; |
| sl->next = specs; |
| specs = sl; |
| } |
| |
| old_spec = *(sl->ptr_spec); |
| *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1])) |
| ? concat (old_spec, spec + 1, NULL) |
| : xstrdup (spec)); |
| |
| #ifdef DEBUG_SPECS |
| if (verbose_flag) |
| fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec)); |
| #endif |
| |
| /* Free the old spec. */ |
| if (old_spec && sl->alloc_p) |
| free (CONST_CAST (char *, old_spec)); |
| |
| sl->user_p = user_p; |
| sl->alloc_p = true; |
| } |
| |
| /* Accumulate a command (program name and args), and run it. */ |
| |
| typedef const char *const_char_p; /* For DEF_VEC_P. */ |
| |
| /* Vector of pointers to arguments in the current line of specifications. */ |
| |
| static vec<const_char_p> argbuf; |
| |
| /* Position in the argbuf vector containing the name of the output file |
| (the value associated with the "-o" flag). */ |
| |
| static int have_o_argbuf_index = 0; |
| |
| /* Were the options -c, -S or -E passed. */ |
| static int have_c = 0; |
| |
| /* Was the option -o passed. */ |
| static int have_o = 0; |
| |
| /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated |
| temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for |
| it here. */ |
| |
| static struct temp_name { |
| const char *suffix; /* suffix associated with the code. */ |
| int length; /* strlen (suffix). */ |
| int unique; /* Indicates whether %g or %u/%U was used. */ |
| const char *filename; /* associated filename. */ |
| int filename_length; /* strlen (filename). */ |
| struct temp_name *next; |
| } *temp_names; |
| |
| /* Number of commands executed so far. */ |
| |
| static int execution_count; |
| |
| /* Number of commands that exited with a signal. */ |
| |
| static int signal_count; |
| |
| /* Allocate the argument vector. */ |
| |
| static void |
| alloc_args (void) |
| { |
| argbuf.create (10); |
| } |
| |
| /* Clear out the vector of arguments (after a command is executed). */ |
| |
| static void |
| clear_args (void) |
| { |
| argbuf.truncate (0); |
| } |
| |
| /* Add one argument to the vector at the end. |
| This is done when a space is seen or at the end of the line. |
| If DELETE_ALWAYS is nonzero, the arg is a filename |
| and the file should be deleted eventually. |
| If DELETE_FAILURE is nonzero, the arg is a filename |
| and the file should be deleted if this compilation fails. */ |
| |
| static void |
| store_arg (const char *arg, int delete_always, int delete_failure) |
| { |
| argbuf.safe_push (arg); |
| |
| if (strcmp (arg, "-o") == 0) |
| have_o_argbuf_index = argbuf.length (); |
| if (delete_always || delete_failure) |
| { |
| const char *p; |
| /* If the temporary file we should delete is specified as |
| part of a joined argument extract the filename. */ |
| if (arg[0] == '-' |
| && (p = strrchr (arg, '='))) |
| arg = p + 1; |
| record_temp_file (arg, delete_always, delete_failure); |
| } |
| } |
| |
| /* Load specs from a file name named FILENAME, replacing occurrences of |
| various different types of line-endings, \r\n, \n\r and just \r, with |
| a single \n. */ |
| |
| static char * |
| load_specs (const char *filename) |
| { |
| int desc; |
| int readlen; |
| struct stat statbuf; |
| char *buffer; |
| char *buffer_p; |
| char *specs; |
| char *specs_p; |
| |
| if (verbose_flag) |
| fnotice (stderr, "Reading specs from %s\n", filename); |
| |
| /* Open and stat the file. */ |
| desc = open (filename, O_RDONLY, 0); |
| if (desc < 0) |
| pfatal_with_name (filename); |
| if (stat (filename, &statbuf) < 0) |
| pfatal_with_name (filename); |
| |
| /* Read contents of file into BUFFER. */ |
| buffer = XNEWVEC (char, statbuf.st_size + 1); |
| readlen = read (desc, buffer, (unsigned) statbuf.st_size); |
| if (readlen < 0) |
| pfatal_with_name (filename); |
| buffer[readlen] = 0; |
| close (desc); |
| |
| specs = XNEWVEC (char, readlen + 1); |
| specs_p = specs; |
| for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++) |
| { |
| int skip = 0; |
| char c = *buffer_p; |
| if (c == '\r') |
| { |
| if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */ |
| skip = 1; |
| else if (*(buffer_p + 1) == '\n') /* \r\n */ |
| skip = 1; |
| else /* \r */ |
| c = '\n'; |
| } |
| if (! skip) |
| *specs_p++ = c; |
| } |
| *specs_p = '\0'; |
| |
| free (buffer); |
| return (specs); |
| } |
| |
| /* Read compilation specs from a file named FILENAME, |
| replacing the default ones. |
| |
| A suffix which starts with `*' is a definition for |
| one of the machine-specific sub-specs. The "suffix" should be |
| *asm, *cc1, *cpp, *link, *startfile, etc. |
| The corresponding spec is stored in asm_spec, etc., |
| rather than in the `compilers' vector. |
| |
| Anything invalid in the file is a fatal error. */ |
| |
| static void |
| read_specs (const char *filename, bool main_p, bool user_p) |
| { |
| char *buffer; |
| char *p; |
| |
| buffer = load_specs (filename); |
| |
| /* Scan BUFFER for specs, putting them in the vector. */ |
| p = buffer; |
| while (1) |
| { |
| char *suffix; |
| char *spec; |
| char *in, *out, *p1, *p2, *p3; |
| |
| /* Advance P in BUFFER to the next nonblank nocomment line. */ |
| p = skip_whitespace (p); |
| if (*p == 0) |
| break; |
| |
| /* Is this a special command that starts with '%'? */ |
| /* Don't allow this for the main specs file, since it would |
| encourage people to overwrite it. */ |
| if (*p == '%' && !main_p) |
| { |
| p1 = p; |
| while (*p && *p != '\n') |
| p++; |
| |
| /* Skip '\n'. */ |
| p++; |
| |
| if (!strncmp (p1, "%include", sizeof ("%include") - 1) |
| && (p1[sizeof "%include" - 1] == ' ' |
| || p1[sizeof "%include" - 1] == '\t')) |
| { |
| char *new_filename; |
| |
| p1 += sizeof ("%include"); |
| while (*p1 == ' ' || *p1 == '\t') |
| p1++; |
| |
| if (*p1++ != '<' || p[-2] != '>') |
| fatal_error ("specs %%include syntax malformed after " |
| "%ld characters", |
| (long) (p1 - buffer + 1)); |
| |
| p[-2] = '\0'; |
| new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); |
| read_specs (new_filename ? new_filename : p1, false, user_p); |
| continue; |
| } |
| else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1) |
| && (p1[sizeof "%include_noerr" - 1] == ' ' |
| || p1[sizeof "%include_noerr" - 1] == '\t')) |
| { |
| char *new_filename; |
| |
| p1 += sizeof "%include_noerr"; |
| while (*p1 == ' ' || *p1 == '\t') |
| p1++; |
| |
| if (*p1++ != '<' || p[-2] != '>') |
| fatal_error ("specs %%include syntax malformed after " |
| "%ld characters", |
| (long) (p1 - buffer + 1)); |
| |
| p[-2] = '\0'; |
| new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); |
| if (new_filename) |
| read_specs (new_filename, false, user_p); |
| else if (verbose_flag) |
| fnotice (stderr, "could not find specs file %s\n", p1); |
| continue; |
| } |
| else if (!strncmp (p1, "%rename", sizeof "%rename" - 1) |
| && (p1[sizeof "%rename" - 1] == ' ' |
| || p1[sizeof "%rename" - 1] == '\t')) |
| { |
| int name_len; |
| struct spec_list *sl; |
| struct spec_list *newsl; |
| |
| /* Get original name. */ |
| p1 += sizeof "%rename"; |
| while (*p1 == ' ' || *p1 == '\t') |
| p1++; |
| |
| if (! ISALPHA ((unsigned char) *p1)) |
| fatal_error ("specs %%rename syntax malformed after " |
| "%ld characters", |
| (long) (p1 - buffer)); |
| |
| p2 = p1; |
| while (*p2 && !ISSPACE ((unsigned char) *p2)) |
| p2++; |
| |
| if (*p2 != ' ' && *p2 != '\t') |
| fatal_error ("specs %%rename syntax malformed after " |
| "%ld characters", |
| (long) (p2 - buffer)); |
| |
| name_len = p2 - p1; |
| *p2++ = '\0'; |
| while (*p2 == ' ' || *p2 == '\t') |
| p2++; |
| |
| if (! ISALPHA ((unsigned char) *p2)) |
| fatal_error ("specs %%rename syntax malformed after " |
| "%ld characters", |
| (long) (p2 - buffer)); |
| |
| /* Get new spec name. */ |
| p3 = p2; |
| while (*p3 && !ISSPACE ((unsigned char) *p3)) |
| p3++; |
| |
| if (p3 != p - 1) |
| fatal_error ("specs %%rename syntax malformed after " |
| "%ld characters", |
| (long) (p3 - buffer)); |
| *p3 = '\0'; |
| |
| for (sl = specs; sl; sl = sl->next) |
| if (name_len == sl->name_len && !strcmp (sl->name, p1)) |
| break; |
| |
| if (!sl) |
| fatal_error ("specs %s spec was not found to be renamed", p1); |
| |
| if (strcmp (p1, p2) == 0) |
| continue; |
| |
| for (newsl = specs; newsl; newsl = newsl->next) |
| if (strcmp (newsl->name, p2) == 0) |
| fatal_error ("%s: attempt to rename spec %qs to " |
| "already defined spec %qs", |
| filename, p1, p2); |
| |
| if (verbose_flag) |
| { |
| fnotice (stderr, "rename spec %s to %s\n", p1, p2); |
| #ifdef DEBUG_SPECS |
| fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec)); |
| #endif |
| } |
| |
| set_spec (p2, *(sl->ptr_spec), user_p); |
| if (sl->alloc_p) |
| free (CONST_CAST (char *, *(sl->ptr_spec))); |
| |
| *(sl->ptr_spec) = ""; |
| sl->alloc_p = 0; |
| continue; |
| } |
| else |
| fatal_error ("specs unknown %% command after %ld characters", |
| (long) (p1 - buffer)); |
| } |
| |
| /* Find the colon that should end the suffix. */ |
| p1 = p; |
| while (*p1 && *p1 != ':' && *p1 != '\n') |
| p1++; |
| |
| /* The colon shouldn't be missing. */ |
| if (*p1 != ':') |
| fatal_error ("specs file malformed after %ld characters", |
| (long) (p1 - buffer)); |
| |
| /* Skip back over trailing whitespace. */ |
| p2 = p1; |
| while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) |
| p2--; |
| |
| /* Copy the suffix to a string. */ |
| suffix = save_string (p, p2 - p); |
| /* Find the next line. */ |
| p = skip_whitespace (p1 + 1); |
| if (p[1] == 0) |
| fatal_error ("specs file malformed after %ld characters", |
| (long) (p - buffer)); |
| |
| p1 = p; |
| /* Find next blank line or end of string. */ |
| while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0'))) |
| p1++; |
| |
| /* Specs end at the blank line and do not include the newline. */ |
| spec = save_string (p, p1 - p); |
| p = p1; |
| |
| /* Delete backslash-newline sequences from the spec. */ |
| in = spec; |
| out = spec; |
| while (*in != 0) |
| { |
| if (in[0] == '\\' && in[1] == '\n') |
| in += 2; |
| else if (in[0] == '#') |
| while (*in && *in != '\n') |
| in++; |
| |
| else |
| *out++ = *in++; |
| } |
| *out = 0; |
| |
| if (suffix[0] == '*') |
| { |
| if (! strcmp (suffix, "*link_command")) |
| link_command_spec = spec; |
| else |
| set_spec (suffix + 1, spec, user_p); |
| } |
| else |
| { |
| /* Add this pair to the vector. */ |
| compilers |
| = XRESIZEVEC (struct compiler, compilers, n_compilers + 2); |
| |
| compilers[n_compilers].suffix = suffix; |
| compilers[n_compilers].spec = spec; |
| n_compilers++; |
| memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]); |
| } |
| |
| if (*suffix == 0) |
| link_command_spec = spec; |
| } |
| |
| if (link_command_spec == 0) |
| fatal_error ("spec file has no spec for linking"); |
| } |
| |
| /* Record the names of temporary files we tell compilers to write, |
| and delete them at the end of the run. */ |
| |
| /* This is the common prefix we use to make temp file names. |
| It is chosen once for each run of this program. |
| It is substituted into a spec by %g or %j. |
| Thus, all temp file names contain this prefix. |
| In practice, all temp file names start with this prefix. |
| |
| This prefix comes from the envvar TMPDIR if it is defined; |
| otherwise, from the P_tmpdir macro if that is defined; |
| otherwise, in /usr/tmp or /tmp; |
| or finally the current directory if all else fails. */ |
| |
| static const char *temp_filename; |
| |
| /* Length of the prefix. */ |
| |
| static int temp_filename_length; |
| |
| /* Define the list of temporary files to delete. */ |
| |
| struct temp_file |
| { |
| const char *name; |
| struct temp_file *next; |
| }; |
| |
| /* Queue of files to delete on success or failure of compilation. */ |
| static struct temp_file *always_delete_queue; |
| /* Queue of files to delete on failure of compilation. */ |
| static struct temp_file *failure_delete_queue; |
| |
| /* Record FILENAME as a file to be deleted automatically. |
| ALWAYS_DELETE nonzero means delete it if all compilation succeeds; |
| otherwise delete it in any case. |
| FAIL_DELETE nonzero means delete it if a compilation step fails; |
| otherwise delete it in any case. */ |
| |
| void |
| record_temp_file (const char *filename, int always_delete, int fail_delete) |
| { |
| char *const name = xstrdup (filename); |
| |
| if (always_delete) |
| { |
| struct temp_file *temp; |
| for (temp = always_delete_queue; temp; temp = temp->next) |
| if (! filename_cmp (name, temp->name)) |
| goto already1; |
| |
| temp = XNEW (struct temp_file); |
| temp->next = always_delete_queue; |
| temp->name = name; |
| always_delete_queue = temp; |
| |
| already1:; |
| } |
| |
| if (fail_delete) |
| { |
| struct temp_file *temp; |
| for (temp = failure_delete_queue; temp; temp = temp->next) |
| if (! filename_cmp (name, temp->name)) |
| { |
| free (name); |
| goto already2; |
| } |
| |
| temp = XNEW (struct temp_file); |
| temp->next = failure_delete_queue; |
| temp->name = name; |
| failure_delete_queue = temp; |
| |
| already2:; |
| } |
| } |
| |
| /* Delete all the temporary files whose names we previously recorded. */ |
| |
| #ifndef DELETE_IF_ORDINARY |
| #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \ |
| do \ |
| { \ |
| if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \ |
| if (unlink (NAME) < 0) \ |
| if (VERBOSE_FLAG) \ |
| perror_with_name (NAME); \ |
| } while (0) |
| #endif |
| |
| static void |
| delete_if_ordinary (const char *name) |
| { |
| struct stat st; |
| #ifdef DEBUG |
| int i, c; |
| |
| printf ("Delete %s? (y or n) ", name); |
| fflush (stdout); |
| i = getchar (); |
| if (i != '\n') |
| while ((c = getchar ()) != '\n' && c != EOF) |
| ; |
| |
| if (i == 'y' || i == 'Y') |
| #endif /* DEBUG */ |
| DELETE_IF_ORDINARY (name, st, verbose_flag); |
| } |
| |
| static void |
| delete_temp_files (void) |
| { |
| struct temp_file *temp; |
| |
| for (temp = always_delete_queue; temp; temp = temp->next) |
| delete_if_ordinary (temp->name); |
| always_delete_queue = 0; |
| } |
| |
| /* Delete all the files to be deleted on error. */ |
| |
| static void |
| delete_failure_queue (void) |
| { |
| struct temp_file *temp; |
| |
| for (temp = failure_delete_queue; temp; temp = temp->next) |
| delete_if_ordinary (temp->name); |
| } |
| |
| static void |
| clear_failure_queue (void) |
| { |
| failure_delete_queue = 0; |
| } |
| |
| /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK |
| returns non-NULL. |
| If DO_MULTI is true iterate over the paths twice, first with multilib |
| suffix then without, otherwise iterate over the paths once without |
| adding a multilib suffix. When DO_MULTI is true, some attempt is made |
| to avoid visiting the same path twice, but we could do better. For |
| instance, /usr/lib/../lib is considered different from /usr/lib. |
| At least EXTRA_SPACE chars past the end of the path passed to |
| CALLBACK are available for use by the callback. |
| CALLBACK_INFO allows extra parameters to be passed to CALLBACK. |
| |
| Returns the value returned by CALLBACK. */ |
| |
| static void * |
| for_each_path (const struct path_prefix *paths, |
| bool do_multi, |
| size_t extra_space, |
| void *(*callback) (char *, void *), |
| void *callback_info) |
| { |
| struct prefix_list *pl; |
| const char *multi_dir = NULL; |
| const char *multi_os_dir = NULL; |
| const char *multiarch_suffix = NULL; |
| const char *multi_suffix; |
| const char *just_multi_suffix; |
| char *path = NULL; |
| void *ret = NULL; |
| bool skip_multi_dir = false; |
| bool skip_multi_os_dir = false; |
| |
| multi_suffix = machine_suffix; |
| just_multi_suffix = just_machine_suffix; |
| if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0) |
| { |
| multi_dir = concat (multilib_dir, dir_separator_str, NULL); |
| multi_suffix = concat (multi_suffix, multi_dir, NULL); |
| just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL); |
| } |
| if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0) |
| multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL); |
| if (multiarch_dir) |
| multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL); |
| |
| while (1) |
| { |
| size_t multi_dir_len = 0; |
| size_t multi_os_dir_len = 0; |
| size_t multiarch_len = 0; |
| size_t suffix_len; |
| size_t just_suffix_len; |
| size_t len; |
| |
| if (multi_dir) |
| multi_dir_len = strlen (multi_dir); |
| if (multi_os_dir) |
| multi_os_dir_len = strlen (multi_os_dir); |
| if (multiarch_suffix) |
| multiarch_len = strlen (multiarch_suffix); |
| suffix_len = strlen (multi_suffix); |
| just_suffix_len = strlen (just_multi_suffix); |
| |
| if (path == NULL) |
| { |
| len = paths->max_len + extra_space + 1; |
| len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len); |
| path = XNEWVEC (char, len); |
| } |
| |
| for (pl = paths->plist; pl != 0; pl = pl->next) |
| { |
| len = strlen (pl->prefix); |
| memcpy (path, pl->prefix, len); |
| |
| /* Look first in MACHINE/VERSION subdirectory. */ |
| if (!skip_multi_dir) |
| { |
| memcpy (path + len, multi_suffix, suffix_len + 1); |
| ret = callback (path, callback_info); |
| if (ret) |
| break; |
| } |
| |
| /* Some paths are tried with just the machine (ie. target) |
| subdir. This is used for finding as, ld, etc. */ |
| if (!skip_multi_dir |
| && pl->require_machine_suffix == 2) |
| { |
| memcpy (path + len, just_multi_suffix, just_suffix_len + 1); |
| ret = callback (path, callback_info); |
| if (ret) |
| break; |
| } |
| |
| /* Now try the multiarch path. */ |
| if (!skip_multi_dir |
| && !pl->require_machine_suffix && multiarch_dir) |
| { |
| memcpy (path + len, multiarch_suffix, multiarch_len + 1); |
| ret = callback (path, callback_info); |
| if (ret) |
| break; |
| } |
| |
| /* Now try the base path. */ |
| if (!pl->require_machine_suffix |
| && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir)) |
| { |
| const char *this_multi; |
| size_t this_multi_len; |
| |
| if (pl->os_multilib) |
| { |
| this_multi = multi_os_dir; |
| this_multi_len = multi_os_dir_len; |
| } |
| else |
| { |
| this_multi = multi_dir; |
| this_multi_len = multi_dir_len; |
| } |
| |
| if (this_multi_len) |
| memcpy (path + len, this_multi, this_multi_len + 1); |
| else |
| path[len] = '\0'; |
| |
| ret = callback (path, callback_info); |
| if (ret) |
| break; |
| } |
| } |
| if (pl) |
| break; |
| |
| if (multi_dir == NULL && multi_os_dir == NULL) |
| break; |
| |
| /* Run through the paths again, this time without multilibs. |
| Don't repeat any we have already seen. */ |
| if (multi_dir) |
| { |
| free (CONST_CAST (char *, multi_dir)); |
| multi_dir = NULL; |
| free (CONST_CAST (char *, multi_suffix)); |
| multi_suffix = machine_suffix; |
| free (CONST_CAST (char *, just_multi_suffix)); |
| just_multi_suffix = just_machine_suffix; |
| } |
| else |
| skip_multi_dir = true; |
| if (multi_os_dir) |
| { |
| free (CONST_CAST (char *, multi_os_dir)); |
| multi_os_dir = NULL; |
| } |
| else |
| skip_multi_os_dir = true; |
| } |
| |
| if (multi_dir) |
| { |
| free (CONST_CAST (char *, multi_dir)); |
| free (CONST_CAST (char *, multi_suffix)); |
| free (CONST_CAST (char *, just_multi_suffix)); |
| } |
| if (multi_os_dir) |
| free (CONST_CAST (char *, multi_os_dir)); |
| if (ret != path) |
| free (path); |
| return ret; |
| } |
| |
| /* Callback for build_search_list. Adds path to obstack being built. */ |
| |
| struct add_to_obstack_info { |
| struct obstack *ob; |
| bool check_dir; |
| bool first_time; |
| }; |
| |
| static void * |
| add_to_obstack (char *path, void *data) |
| { |
| struct add_to_obstack_info *info = (struct add_to_obstack_info *) data; |
| |
| if (info->check_dir && !is_directory (path, false)) |
| return NULL; |
| |
| if (!info->first_time) |
| obstack_1grow (info->ob, PATH_SEPARATOR); |
| |
| obstack_grow (info->ob, path, strlen (path)); |
| |
| info->first_time = false; |
| return NULL; |
| } |
| |
| /* Add or change the value of an environment variable, outputting the |
| change to standard error if in verbose mode. */ |
| static void |
| xputenv (const char *string) |
| { |
| if (verbose_flag) |
| fnotice (stderr, "%s\n", string); |
| putenv (CONST_CAST (char *, string)); |
| } |
| |
| /* Build a list of search directories from PATHS. |
| PREFIX is a string to prepend to the list. |
| If CHECK_DIR_P is true we ensure the directory exists. |
| If DO_MULTI is true, multilib paths are output first, then |
| non-multilib paths. |
| This is used mostly by putenv_from_prefixes so we use `collect_obstack'. |
| It is also used by the --print-search-dirs flag. */ |
| |
| static char * |
| build_search_list (const struct path_prefix *paths, const char *prefix, |
| bool check_dir, bool do_multi) |
| { |
| struct add_to_obstack_info info; |
| |
| info.ob = &collect_obstack; |
| info.check_dir = check_dir; |
| info.first_time = true; |
| |
| obstack_grow (&collect_obstack, prefix, strlen (prefix)); |
| obstack_1grow (&collect_obstack, '='); |
| |
| for_each_path (paths, do_multi, 0, add_to_obstack, &info); |
| |
| obstack_1grow (&collect_obstack, '\0'); |
| return XOBFINISH (&collect_obstack, char *); |
| } |
| |
| /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables |
| for collect. */ |
| |
| static void |
| putenv_from_prefixes (const struct path_prefix *paths, const char *env_var, |
| bool do_multi) |
| { |
| xputenv (build_search_list (paths, env_var, true, do_multi)); |
| } |
| |
| /* Check whether NAME can be accessed in MODE. This is like access, |
| except that it never considers directories to be executable. */ |
| |
| static int |
| access_check (const char *name, int mode) |
| { |
| if (mode == X_OK) |
| { |
| struct stat st; |
| |
| if (stat (name, &st) < 0 |
| || S_ISDIR (st.st_mode)) |
| return -1; |
| } |
| |
| return access (name, mode); |
| } |
| |
| /* Callback for find_a_file. Appends the file name to the directory |
| path. If the resulting file exists in the right mode, return the |
| full pathname to the file. */ |
| |
| struct file_at_path_info { |
| const char *name; |
| const char *suffix; |
| int name_len; |
| int suffix_len; |
| int mode; |
| }; |
| |
| static void * |
| file_at_path (char *path, void *data) |
| { |
| struct file_at_path_info *info = (struct file_at_path_info *) data; |
| size_t len = strlen (path); |
| |
| memcpy (path + len, info->name, info->name_len); |
| len += info->name_len; |
| |
| /* Some systems have a suffix for executable files. |
| So try appending that first. */ |
| if (info->suffix_len) |
| { |
| memcpy (path + len, info->suffix, info->suffix_len + 1); |
| if (access_check (path, info->mode) == 0) |
| return path; |
| } |
| |
| path[len] = '\0'; |
| if (access_check (path, info->mode) == 0) |
| return path; |
| |
| return NULL; |
| } |
| |
| /* Search for NAME using the prefix list PREFIXES. MODE is passed to |
| access to check permissions. If DO_MULTI is true, search multilib |
| paths then non-multilib paths, otherwise do not search multilib paths. |
| Return 0 if not found, otherwise return its name, allocated with malloc. */ |
| |
| static char * |
| find_a_file (const struct path_prefix *pprefix, const char *name, int mode, |
| bool do_multi) |
| { |
| struct file_at_path_info info; |
| |
| #ifdef DEFAULT_ASSEMBLER |
| if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0) |
| return xstrdup (DEFAULT_ASSEMBLER); |
| #endif |
| |
| #ifdef DEFAULT_LINKER |
| if (! strcmp (name, "ld") && access (DEFAULT_LINKER, mode) == 0) |
| return xstrdup (DEFAULT_LINKER); |
| #endif |
| |
| /* Determine the filename to execute (special case for absolute paths). */ |
| |
| if (IS_ABSOLUTE_PATH (name)) |
| { |
| if (access (name, mode) == 0) |
| return xstrdup (name); |
| |
| return NULL; |
| } |
| |
| info.name = name; |
| info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : ""; |
| info.name_len = strlen (info.name); |
| info.suffix_len = strlen (info.suffix); |
| info.mode = mode; |
| |
| return (char*) for_each_path (pprefix, do_multi, |
| info.name_len + info.suffix_len, |
| file_at_path, &info); |
| } |
| |
| /* Ranking of prefixes in the sort list. -B prefixes are put before |
| all others. */ |
| |
| enum path_prefix_priority |
| { |
| PREFIX_PRIORITY_B_OPT, |
| PREFIX_PRIORITY_LAST |
| }; |
| |
| /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending |
| order according to PRIORITY. Within each PRIORITY, new entries are |
| appended. |
| |
| If WARN is nonzero, we will warn if no file is found |
| through this prefix. WARN should point to an int |
| which will be set to 1 if this entry is used. |
| |
| COMPONENT is the value to be passed to update_path. |
| |
| REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without |
| the complete value of machine_suffix. |
| 2 means try both machine_suffix and just_machine_suffix. */ |
| |
| static void |
| add_prefix (struct path_prefix *pprefix, const char *prefix, |
| const char *component, /* enum prefix_priority */ int priority, |
| int require_machine_suffix, int os_multilib) |
| { |
| struct prefix_list *pl, **prev; |
| int len; |
| |
| for (prev = &pprefix->plist; |
| (*prev) != NULL && (*prev)->priority <= priority; |
| prev = &(*prev)->next) |
| ; |
| |
| /* Keep track of the longest prefix. */ |
| |
| prefix = update_path (prefix, component); |
| len = strlen (prefix); |
| if (len > pprefix->max_len) |
| pprefix->max_len = len; |
| |
| pl = XNEW (struct prefix_list); |
| pl->prefix = prefix; |
| pl->require_machine_suffix = require_machine_suffix; |
| pl->priority = priority; |
| pl->os_multilib = os_multilib; |
| |
| /* Insert after PREV. */ |
| pl->next = (*prev); |
| (*prev) = pl; |
| } |
| |
| /* Same as add_prefix, but prepending target_system_root to prefix. */ |
| /* The target_system_root prefix has been relocated by gcc_exec_prefix. */ |
| static void |
| add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix, |
| const char *component, |
| /* enum prefix_priority */ int priority, |
| int require_machine_suffix, int os_multilib) |
| { |
| if (!IS_ABSOLUTE_PATH (prefix)) |
| fatal_error ("system path %qs is not absolute", prefix); |
| |
| if (target_system_root) |
| { |
| char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root); |
| size_t sysroot_len = strlen (target_system_root); |
| |
| if (sysroot_len > 0 |
| && target_system_root[sysroot_len - 1] == DIR_SEPARATOR) |
| sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0'; |
| |
| if (target_sysroot_suffix) |
| prefix = concat (sysroot_no_trailing_dir_separator, |
| target_sysroot_suffix, prefix, NULL); |
| else |
| prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL); |
| |
| free (sysroot_no_trailing_dir_separator); |
| |
| /* We have to override this because GCC's notion of sysroot |
| moves along with GCC. */ |
| component = "GCC"; |
| } |
| |
| add_prefix (pprefix, prefix, component, priority, |
| require_machine_suffix, os_multilib); |
| } |
| |
| /* Execute the command specified by the arguments on the current line of spec. |
| When using pipes, this includes several piped-together commands |
| with `|' between them. |
| |
| Return 0 if successful, -1 if failed. */ |
| |
| static int |
| execute (void) |
| { |
| int i; |
| int n_commands; /* # of command. */ |
| char *string; |
| struct pex_obj *pex; |
| struct command |
| { |
| const char *prog; /* program name. */ |
| const char **argv; /* vector of args. */ |
| }; |
| const char *arg; |
| |
| struct command *commands; /* each command buffer with above info. */ |
| |
| gcc_assert (!processing_spec_function); |
| |
| if (wrapper_string) |
| { |
| string = find_a_file (&exec_prefixes, |
| argbuf[0], X_OK, false); |
| if (string) |
| argbuf[0] = string; |
| insert_wrapper (wrapper_string); |
| } |
| |
| /* Count # of piped commands. */ |
| for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++) |
| if (strcmp (arg, "|") == 0) |
| n_commands++; |
| |
| /* Get storage for each command. */ |
| commands = (struct command *) alloca (n_commands * sizeof (struct command)); |
| |
| /* Split argbuf into its separate piped processes, |
| and record info about each one. |
| Also search for the programs that are to be run. */ |
| |
| argbuf.safe_push (0); |
| |
| commands[0].prog = argbuf[0]; /* first command. */ |
| commands[0].argv = argbuf.address (); |
| |
| if (!wrapper_string) |
| { |
| string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false); |
| commands[0].argv[0] = (string) ? string : commands[0].argv[0]; |
| } |
| |
| for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++) |
| if (arg && strcmp (arg, "|") == 0) |
| { /* each command. */ |
| #if defined (__MSDOS__) || defined (OS2) || defined (VMS) |
| fatal_error ("-pipe not supported"); |
| #endif |
| argbuf[i] = 0; /* Termination of |
| command args. */ |
| commands[n_commands].prog = argbuf[i + 1]; |
| commands[n_commands].argv |
| = &(argbuf.address ())[i + 1]; |
| string = find_a_file (&exec_prefixes, commands[n_commands].prog, |
| X_OK, false); |
| if (string) |
| commands[n_commands].argv[0] = string; |
| n_commands++; |
| } |
| |
| /* If -v, print what we are about to do, and maybe query. */ |
| |
| if (verbose_flag) |
| { |
| /* For help listings, put a blank line between sub-processes. */ |
| if (print_help_list) |
| fputc ('\n', stderr); |
| |
| /* Print each piped command as a separate line. */ |
| for (i = 0; i < n_commands; i++) |
| { |
| const char *const *j; |
| |
| if (verbose_only_flag) |
| { |
| for (j = commands[i].argv; *j; j++) |
| { |
| const char *p; |
| for (p = *j; *p; ++p) |
| if (!ISALNUM ((unsigned char) *p) |
| && *p != '_' && *p != '/' && *p != '-' && *p != '.') |
| break; |
| if (*p || !*j) |
| { |
| fprintf (stderr, " \""); |
| for (p = *j; *p; ++p) |
| { |
| if (*p == '"' || *p == '\\' || *p == '$') |
| fputc ('\\', stderr); |
| fputc (*p, stderr); |
| } |
| fputc ('"', stderr); |
| } |
| /* If it's empty, print "". */ |
| else if (!**j) |
| fprintf (stderr, " \"\""); |
| else |
| fprintf (stderr, " %s", *j); |
| } |
| } |
| else |
| for (j = commands[i].argv; *j; j++) |
| /* If it's empty, print "". */ |
| if (!**j) |
| fprintf (stderr, " \"\""); |
| else |
| fprintf (stderr, " %s", *j); |
| |
| /* Print a pipe symbol after all but the last command. */ |
| if (i + 1 != n_commands) |
| fprintf (stderr, " |"); |
| fprintf (stderr, "\n"); |
| } |
| fflush (stderr); |
| if (verbose_only_flag != 0) |
| { |
| /* verbose_only_flag should act as if the spec was |
| executed, so increment execution_count before |
| returning. This prevents spurious warnings about |
| unused linker input files, etc. */ |
| execution_count++; |
| return 0; |
| } |
| #ifdef DEBUG |
| fnotice (stderr, "\nGo ahead? (y or n) "); |
| fflush (stderr); |
| i = getchar (); |
| if (i != '\n') |
| while (getchar () != '\n') |
| ; |
| |
| if (i != 'y' && i != 'Y') |
| return 0; |
| #endif /* DEBUG */ |
| } |
| |
| #ifdef ENABLE_VALGRIND_CHECKING |
| /* Run the each command through valgrind. To simplify prepending the |
| path to valgrind and the option "-q" (for quiet operation unless |
| something triggers), we allocate a separate argv array. */ |
| |
| for (i = 0; i < n_commands; i++) |
| { |
| const char **argv; |
| int argc; |
| int j; |
| |
| for (argc = 0; commands[i].argv[argc] != NULL; argc++) |
| ; |
| |
| argv = XALLOCAVEC (const char *, argc + 3); |
| |
| argv[0] = VALGRIND_PATH; |
| argv[1] = "-q"; |
| for (j = 2; j < argc + 2; j++) |
| argv[j] = commands[i].argv[j - 2]; |
| argv[j] = NULL; |
| |
| commands[i].argv = argv; |
| commands[i].prog = argv[0]; |
| } |
| #endif |
| |
| /* Run each piped subprocess. */ |
| |
| pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file) |
| ? PEX_RECORD_TIMES : 0), |
| progname, temp_filename); |
| if (pex == NULL) |
| fatal_error ("pex_init failed: %m"); |
| |
| for (i = 0; i < n_commands; i++) |
| { |
| const char *errmsg; |
| int err; |
| const char *string = commands[i].argv[0]; |
| |
| errmsg = pex_run (pex, |
| ((i + 1 == n_commands ? PEX_LAST : 0) |
| | (string == commands[i].prog ? PEX_SEARCH : 0)), |
| string, CONST_CAST (char **, commands[i].argv), |
| NULL, NULL, &err); |
| if (errmsg != NULL) |
| { |
| if (err == 0) |
| fatal_error (errmsg); |
| else |
| { |
| errno = err; |
| pfatal_with_name (errmsg); |
| } |
| } |
| |
| if (string != commands[i].prog) |
| free (CONST_CAST (char *, string)); |
| } |
| |
| execution_count++; |
| |
| /* Wait for all the subprocesses to finish. */ |
| |
| { |
| int *statuses; |
| struct pex_time *times = NULL; |
| int ret_code = 0; |
| |
| statuses = (int *) alloca (n_commands * sizeof (int)); |
| if (!pex_get_status (pex, n_commands, statuses)) |
| fatal_error ("failed to get exit status: %m"); |
| |
| if (report_times || report_times_to_file) |
| { |
| times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time)); |
| if (!pex_get_times (pex, n_commands, times)) |
| fatal_error ("failed to get process times: %m"); |
| } |
| |
| pex_free (pex); |
| |
| for (i = 0; i < n_commands; ++i) |
| { |
| int status = statuses[i]; |
| |
| if (WIFSIGNALED (status)) |
| { |
| #ifdef SIGPIPE |
| /* SIGPIPE is a special case. It happens in -pipe mode |
| when the compiler dies before the preprocessor is done, |
| or the assembler dies before the compiler is done. |
| There's generally been an error already, and this is |
| just fallout. So don't generate another error unless |
| we would otherwise have succeeded. */ |
| if (WTERMSIG (status) == SIGPIPE |
| && (signal_count || greatest_status >= MIN_FATAL_STATUS)) |
| { |
| signal_count++; |
| ret_code = -1; |
| } |
| else |
| #endif |
| internal_error ("%s (program %s)", |
| strsignal (WTERMSIG (status)), commands[i].prog); |
| } |
| else if (WIFEXITED (status) |
| && WEXITSTATUS (status) >= MIN_FATAL_STATUS) |
| { |
| if (WEXITSTATUS (status) > greatest_status) |
| greatest_status = WEXITSTATUS (status); |
| ret_code = -1; |
| } |
| |
| if (report_times || report_times_to_file) |
| { |
| struct pex_time *pt = ×[i]; |
| double ut, st; |
| |
| ut = ((double) pt->user_seconds |
| + (double) pt->user_microseconds / 1.0e6); |
| st = ((double) pt->system_seconds |
| + (double) pt->system_microseconds / 1.0e6); |
| |
| if (ut + st != 0) |
| { |
| if (report_times) |
| fnotice (stderr, "# %s %.2f %.2f\n", |
| commands[i].prog, ut, st); |
| |
| if (report_times_to_file) |
| { |
| int c = 0; |
| const char *const *j; |
| |
| fprintf (report_times_to_file, "%g %g", ut, st); |
| |
| for (j = &commands[i].prog; *j; j = &commands[i].argv[++c]) |
| { |
| const char *p; |
| for (p = *j; *p; ++p) |
| if (*p == '"' || *p == '\\' || *p == '$' |
| || ISSPACE (*p)) |
| break; |
| |
| if (*p) |
| { |
| fprintf (report_times_to_file, " \""); |
| for (p = *j; *p; ++p) |
| { |
| if (*p == '"' || *p == '\\' || *p == '$') |
| fputc ('\\', report_times_to_file); |
| fputc (*p, report_times_to_file); |
| } |
| fputc ('"', report_times_to_file); |
| } |
| else |
| fprintf (report_times_to_file, " %s", *j); |
| } |
| |
| fputc ('\n', report_times_to_file); |
| } |
| } |
| } |
| } |
| |
| return ret_code; |
| } |
| } |
| |
| /* Find all the switches given to us |
| and make a vector describing them. |
| The elements of the vector are strings, one per switch given. |
| If a switch uses following arguments, then the `part1' field |
| is the switch itself and the `args' field |
| is a null-terminated vector containing the following arguments. |
| Bits in the `live_cond' field are: |
| SWITCH_LIVE to indicate this switch is true in a conditional spec. |
| SWITCH_FALSE to indicate this switch is overridden by a later switch. |
| SWITCH_IGNORE to indicate this switch should be ignored (used in %<S). |
| SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored |
| in all do_spec calls afterwards. Used for %<S from self specs. |
| The `validated' field is nonzero if any spec has looked at this switch; |
| if it remains zero at the end of the run, it must be meaningless. */ |
| |
| #define SWITCH_LIVE (1 << 0) |
| #define SWITCH_FALSE (1 << 1) |
| #define SWITCH_IGNORE (1 << 2) |
| #define SWITCH_IGNORE_PERMANENTLY (1 << 3) |
| #define SWITCH_KEEP_FOR_GCC (1 << 4) |
| |
| struct switchstr |
| { |
| const char *part1; |
| const char **args; |
| unsigned int live_cond; |
| bool known; |
| bool validated; |
| bool ordering; |
| }; |
| |
| static struct switchstr *switches; |
| |
| static int n_switches; |
| |
| static int n_switches_alloc; |
| |
| /* Set to zero if -fcompare-debug is disabled, positive if it's |
| enabled and we're running the first compilation, negative if it's |
| enabled and we're running the second compilation. For most of the |
| time, it's in the range -1..1, but it can be temporarily set to 2 |
| or 3 to indicate that the -fcompare-debug flags didn't come from |
| the command-line, but rather from the GCC_COMPARE_DEBUG environment |
| variable, until a synthesized -fcompare-debug flag is added to the |
| command line. */ |
| int compare_debug; |
| |
| /* Set to nonzero if we've seen the -fcompare-debug-second flag. */ |
| int compare_debug_second; |
| |
| /* Set to the flags that should be passed to the second compilation in |
| a -fcompare-debug compilation. */ |
| const char *compare_debug_opt; |
| |
| static struct switchstr *switches_debug_check[2]; |
| |
| static int n_switches_debug_check[2]; |
| |
| static int n_switches_alloc_debug_check[2]; |
| |
| static char *debug_check_temp_file[2]; |
| |
| /* Language is one of three things: |
| |
| 1) The name of a real programming language. |
| 2) NULL, indicating that no one has figured out |
| what it is yet. |
| 3) '*', indicating that the file should be passed |
| to the linker. */ |
| struct infile |
| { |
| const char *name; |
| const char *language; |
| struct compiler *incompiler; |
| bool compiled; |
| bool preprocessed; |
| }; |
| |
| /* Also a vector of input files specified. */ |
| |
| static struct infile *infiles; |
| |
| int n_infiles; |
| |
| static int n_infiles_alloc; |
| |
| /* True if multiple input files are being compiled to a single |
| assembly file. */ |
| |
| static bool combine_inputs; |
| |
| /* This counts the number of libraries added by lang_specific_driver, so that |
| we can tell if there were any user supplied any files or libraries. */ |
| |
| static int added_libraries; |
| |
| /* And a vector of corresponding output files is made up later. */ |
| |
| const char **outfiles; |
| |
| #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) |
| |
| /* Convert NAME to a new name if it is the standard suffix. DO_EXE |
| is true if we should look for an executable suffix. DO_OBJ |
| is true if we should look for an object suffix. */ |
| |
| static const char * |
| convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED, |
| int do_obj ATTRIBUTE_UNUSED) |
| { |
| #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) |
| int i; |
| #endif |
| int len; |
| |
| if (name == NULL) |
| return NULL; |
| |
| len = strlen (name); |
| |
| #ifdef HAVE_TARGET_OBJECT_SUFFIX |
| /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */ |
| if (do_obj && len > 2 |
| && name[len - 2] == '.' |
| && name[len - 1] == 'o') |
| { |
| obstack_grow (&obstack, name, len - 2); |
| obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); |
| name = XOBFINISH (&obstack, const char *); |
| } |
| #endif |
| |
| #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) |
| /* If there is no filetype, make it the executable suffix (which includes |
| the "."). But don't get confused if we have just "-o". */ |
| if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-')) |
| return name; |
| |
| for (i = len - 1; i >= 0; i--) |
| if (IS_DIR_SEPARATOR (name[i])) |
| break; |
| |
| for (i++; i < len; i++) |
| if (name[i] == '.') |
| return name; |
| |
| obstack_grow (&obstack, name, len); |
| obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX, |
| strlen (TARGET_EXECUTABLE_SUFFIX)); |
| name = XOBFINISH (&obstack, const char *); |
| #endif |
| |
| return name; |
| } |
| #endif |
| |
| /* Display the command line switches accepted by gcc. */ |
| static void |
| display_help (void) |
| { |
| printf (_("Usage: %s [options] file...\n"), progname); |
| fputs (_("Options:\n"), stdout); |
| |
| fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout); |
| fputs (_(" --help Display this information\n"), stdout); |
| fputs (_(" --target-help Display target specific command line options\n"), stdout); |
| fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout); |
| fputs (_(" Display specific types of command line options\n"), stdout); |
| if (! verbose_flag) |
| fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout); |
| fputs (_(" --version Display compiler version information\n"), stdout); |
| fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout); |
| fputs (_(" -dumpversion Display the version of the compiler\n"), stdout); |
| fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout); |
| fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout); |
| fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout); |
| fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout); |
| fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout); |
| fputs (_("\ |
| -print-multiarch Display the target's normalized GNU triplet, used as\n\ |
| a component in the library path\n"), stdout); |
| fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout); |
| fputs (_("\ |
| -print-multi-lib Display the mapping between command line options and\n\ |
| multiple library search directories\n"), stdout); |
| fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout); |
| fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout); |
| fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout); |
| fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout); |
| fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout); |
| fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout); |
| fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout); |
| fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout); |
| fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout); |
| fputs (_(" -Xclang-only=<arg> Ignore <arg>\n"), stdout); |
| fputs (_(" -save-temps Do not delete intermediate files\n"), stdout); |
| fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout); |
| fputs (_("\ |
| -[no-]canonical-prefixes Specify the path canonicalization for relative\n\ |
| prefixes to other gcc components\n"), stdout); |
| fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout); |
| fputs (_(" -time Time the execution of each subprocess\n"), stdout); |
| fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout); |
| fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout); |
| fputs (_("\ |
| --sysroot=<directory> Use <directory> as the root directory for headers\n\ |
| and libraries\n"), stdout); |
| fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout); |
| fputs (_(" -v Display the programs invoked by the compiler\n"), stdout); |
| fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout); |
| fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout); |
| fputs (_(" -S Compile only; do not assemble or link\n"), stdout); |
| fputs (_(" -c Compile and assemble, but do not link\n"), stdout); |
| fputs (_(" -o <file> Place the output into <file>\n"), stdout); |
| fputs (_(" -pie Create a position independent executable\n"), stdout); |
| fputs (_(" -no-pie Create a position dependent executable\n"), stdout); |
| fputs (_(" -shared Create a shared library\n"), stdout); |
| fputs (_("\ |
| -x <language> Specify the language of the following input files\n\ |
| Permissible languages include: c c++ assembler none\n\ |
| 'none' means revert to the default behavior of\n\ |
| guessing the language based on the file's extension\n\ |
| "), stdout); |
| |
| printf (_("\ |
| \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\ |
| passed on to the various sub-processes invoked by %s. In order to pass\n\ |
| other options on to these processes the -W<letter> options must be used.\n\ |
| "), progname); |
| |
| /* The rest of the options are displayed by invocations of the various |
| sub-processes. */ |
| } |
| |
| static void |
| add_preprocessor_option (const char *option, int len) |
| { |
| preprocessor_options.safe_push (save_string (option, len)); |
| } |
| |
| static void |
| add_assembler_option (const char *option, int len) |
| { |
| assembler_options.safe_push (save_string (option, len)); |
| } |
| |
| static void |
| add_linker_option (const char *option, int len) |
| { |
| linker_options.safe_push (save_string (option, len)); |
| } |
| |
| /* Allocate space for an input file in infiles. */ |
| |
| static void |
| alloc_infile (void) |
| { |
| if (n_infiles_alloc == 0) |
| { |
| n_infiles_alloc = 16; |
| infiles = XNEWVEC (struct infile, n_infiles_alloc); |
| } |
| else if (n_infiles_alloc == n_infiles) |
| { |
| n_infiles_alloc *= 2; |
| infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc); |
| } |
| } |
| |
| /* Store an input file with the given NAME and LANGUAGE in |
| infiles. */ |
| |
| static void |
| add_infile (const char *name, const char *language) |
| { |
| alloc_infile (); |
| infiles[n_infiles].name = name; |
| infiles[n_infiles++].language = language; |
| } |
| |
| /* Allocate space for a switch in switches. */ |
| |
| static void |
| alloc_switch (void) |
| { |
| if (n_switches_alloc == 0) |
| { |
| n_switches_alloc = 16; |
| switches = XNEWVEC (struct switchstr, n_switches_alloc); |
| } |
| else if (n_switches_alloc == n_switches) |
| { |
| n_switches_alloc *= 2; |
| switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc); |
| } |
| } |
| |
| /* Save an option OPT with N_ARGS arguments in array ARGS, marking it |
| as validated if VALIDATED and KNOWN if it is an internal switch. */ |
| |
| static void |
| save_switch (const char *opt, size_t n_args, const char *const *args, |
| bool validated, bool known) |
| { |
| alloc_switch (); |
| switches[n_switches].part1 = opt + 1; |
| if (n_args == 0) |
| switches[n_switches].args = 0; |
| else |
| { |
| switches[n_switches].args = XNEWVEC (const char *, n_args + 1); |
| memcpy (switches[n_switches].args, args, n_args * sizeof (const char *)); |
| switches[n_switches].args[n_args] = NULL; |
| } |
| |
| switches[n_switches].live_cond = 0; |
| switches[n_switches].validated = validated; |
| switches[n_switches].known = known; |
| switches[n_switches].ordering = 0; |
| n_switches++; |
| } |
| |
| /* Handle an option DECODED that is unknown to the option-processing |
| machinery. */ |
| |
| static bool |
| driver_unknown_option_callback (const struct cl_decoded_option *decoded) |
| { |
| const char *opt = decoded->arg; |
| if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-' |
| && !(decoded->errors & CL_ERR_NEGATIVE)) |
| { |
| /* Leave unknown -Wno-* options for the compiler proper, to be |
| diagnosed only if there are warnings. */ |
| save_switch (decoded->canonical_option[0], |
| decoded->canonical_option_num_elements - 1, |
| &decoded->canonical_option[1], false, true); |
| return false; |
| } |
| if (decoded->opt_index == OPT_SPECIAL_unknown) |
| { |
| /* Give it a chance to define it a a spec file. */ |
| save_switch (decoded->canonical_option[0], |
| decoded->canonical_option_num_elements - 1, |
| &decoded->canonical_option[1], false, false); |
| return false; |
| } |
| else |
| return true; |
| } |
| |
| /* Handle an option DECODED that is not marked as CL_DRIVER. |
| LANG_MASK will always be CL_DRIVER. */ |
| |
| static void |
| driver_wrong_lang_callback (const struct cl_decoded_option *decoded, |
| unsigned int lang_mask ATTRIBUTE_UNUSED) |
| { |
| /* At this point, non-driver options are accepted (and expected to |
| be passed down by specs) unless marked to be rejected by the |
| driver. Options to be rejected by the driver but accepted by the |
| compilers proper are treated just like completely unknown |
| options. */ |
| const struct cl_option *option = &cl_options[decoded->opt_index]; |
| |
| if (option->cl_reject_driver) |
| error ("unrecognized command line option %qs", |
| decoded->orig_option_with_args_text); |
| else |
| save_switch (decoded->canonical_option[0], |
| decoded->canonical_option_num_elements - 1, |
| &decoded->canonical_option[1], false, true); |
| } |
| |
| static const char *spec_lang = 0; |
| static int last_language_n_infiles; |
| |
| /* Handle a driver option; arguments and return value as for |
| handle_option. */ |
| |
| static bool |
| driver_handle_option (struct gcc_options *opts, |
| struct gcc_options *opts_set, |
| const struct cl_decoded_option *decoded, |
| unsigned int lang_mask ATTRIBUTE_UNUSED, int kind, |
| location_t loc, |
| const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED, |
| diagnostic_context *dc) |
| { |
| size_t opt_index = decoded->opt_index; |
| const char *arg = decoded->arg; |
| const char *compare_debug_replacement_opt; |
| int value = decoded->value; |
| bool validated = false; |
| bool do_save = true; |
| |
| gcc_assert (opts == &global_options); |
| gcc_assert (opts_set == &global_options_set); |
| gcc_assert (kind == DK_UNSPECIFIED); |
| gcc_assert (loc == UNKNOWN_LOCATION); |
| gcc_assert (dc == global_dc); |
| |
| switch (opt_index) |
| { |
| case OPT_dumpspecs: |
| { |
| struct spec_list *sl; |
| init_spec (); |
| for (sl = specs; sl; sl = sl->next) |
| printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec)); |
| if (link_command_spec) |
| printf ("*link_command:\n%s\n\n", link_command_spec); |
| exit (0); |
| } |
| |
| case OPT_dumpversion: |
| printf ("%s\n", spec_version); |
| exit (0); |
| |
| case OPT_dumpmachine: |
| printf ("%s\n", spec_machine); |
| exit (0); |
| |
| case OPT__version: |
| print_version = 1; |
| |
| /* CPP driver cannot obtain switch from cc1_options. */ |
| if (is_cpp_driver) |
| add_preprocessor_option ("--version", strlen ("--version")); |
| add_assembler_option ("--version", strlen ("--version")); |
| add_linker_option ("--version", strlen ("--version")); |
| break; |
| |
| case OPT__help: |
| print_help_list = 1; |
| |
| /* CPP driver cannot obtain switch from cc1_options. */ |
| if (is_cpp_driver) |
| add_preprocessor_option ("--help", 6); |
| add_assembler_option ("--help", 6); |
| add_linker_option ("--help", 6); |
| break; |
| |
| case OPT__help_: |
| print_subprocess_help = 2; |
| break; |
| |
| case OPT__target_help: |
| print_subprocess_help = 1; |
| |
| /* CPP driver cannot obtain switch from cc1_options. */ |
| if (is_cpp_driver) |
| add_preprocessor_option ("--target-help", 13); |
| add_assembler_option ("--target-help", 13); |
| add_linker_option ("--target-help", 13); |
| break; |
| |
| case OPT__no_sysroot_suffix: |
| case OPT_pass_exit_codes: |
| case OPT_print_search_dirs: |
| case OPT_print_file_name_: |
| case OPT_print_prog_name_: |
| case OPT_print_multi_lib: |
| case OPT_print_multi_directory: |
| case OPT_print_sysroot: |
| case OPT_print_multi_os_directory: |
| case OPT_print_multiarch: |
| case OPT_print_sysroot_headers_suffix: |
| case OPT_time: |
| case OPT_wrapper: |
| /* These options set the variables specified in common.opt |
| automatically, and do not need to be saved for spec |
| processing. */ |
| do_save = false; |
| break; |
| |
| case OPT_print_libgcc_file_name: |
| print_file_name = "libgcc.a"; |
| do_save = false; |
| break; |
| |
| case OPT_fuse_ld_bfd: |
| use_ld = ".bfd"; |
| break; |
| |
| case OPT_fuse_ld_gold: |
| use_ld = ".gold"; |
| break; |
| |
| case OPT_fcompare_debug_second: |
| compare_debug_second = 1; |
| break; |
| |
| case OPT_fcompare_debug: |
| switch (value) |
| { |
| case 0: |
| compare_debug_replacement_opt = "-fcompare-debug="; |
| arg = ""; |
| goto compare_debug_with_arg; |
| |
| case 1: |
| compare_debug_replacement_opt = "-fcompare-debug=-gtoggle"; |
| arg = "-gtoggle"; |
| goto compare_debug_with_arg; |
| |
| default: |
| gcc_unreachable (); |
| } |
| break; |
| |
| case OPT_fcompare_debug_: |
| compare_debug_replacement_opt = decoded->canonical_option[0]; |
| compare_debug_with_arg: |
| gcc_assert (decoded->canonical_option_num_elements == 1); |
| gcc_assert (arg != NULL); |
| if (*arg) |
| compare_debug = 1; |
| else |
| compare_debug = -1; |
| if (compare_debug < 0) |
| compare_debug_opt = NULL; |
| else |
| compare_debug_opt = arg; |
| save_switch (compare_debug_replacement_opt, 0, NULL, validated, true); |
| return true; |
| |
| case OPT_Wa_: |
| { |
| int prev, j; |
| /* Pass the rest of this option to the assembler. */ |
| |
| /* Split the argument at commas. */ |
| prev = 0; |
| for (j = 0; arg[j]; j++) |
| if (arg[j] == ',') |
| { |
| add_assembler_option (arg + prev, j - prev); |
| prev = j + 1; |
| } |
| |
| /* Record the part after the last comma. */ |
| add_assembler_option (arg + prev, j - prev); |
| } |
| do_save = false; |
| break; |
| |
| case OPT_Wp_: |
| { |
| int prev, j; |
| /* Pass the rest of this option to the preprocessor. */ |
| |
| /* Split the argument at commas. */ |
| prev = 0; |
| for (j = 0; arg[j]; j++) |
| if (arg[j] == ',') |
| { |
| add_preprocessor_option (arg + prev, j - prev); |
| prev = j + 1; |
| } |
| |
| /* Record the part after the last comma. */ |
| add_preprocessor_option (arg + prev, j - prev); |
| } |
| do_save = false; |
| break; |
| |
| case OPT_Wl_: |
| { |
| int prev, j; |
| /* Split the argument at commas. */ |
| prev = 0; |
| for (j = 0; arg[j]; j++) |
| if (arg[j] == ',') |
| { |
| add_infile (save_string (arg + prev, j - prev), "*"); |
| prev = j + 1; |
| } |
| /* Record the part after the last comma. */ |
| add_infile (arg + prev, "*"); |
| } |
| do_save = false; |
| break; |
| |
| case OPT_Xlinker: |
| add_infile (arg, "*"); |
| do_save = false; |
| break; |
| |
| case OPT_Xpreprocessor: |
| add_preprocessor_option (arg, strlen (arg)); |
| do_save = false; |
| break; |
| |
| case OPT_Xassembler: |
| add_assembler_option (arg, strlen (arg)); |
| do_save = false; |
| break; |
| |
| case OPT_l: |
| /* POSIX allows separation of -l and the lib arg; canonicalize |
| by concatenating -l with its arg */ |
| add_infile (concat ("-l", arg, NULL), "*"); |
| do_save = false; |
| break; |
| |
| case OPT_L: |
| /* Similarly, canonicalize -L for linkers that may not accept |
| separate arguments. */ |
| save_switch (concat ("-L", arg, NULL), 0, NULL, validated, true); |
| return true; |
| |
| case OPT_F: |
| /* Likewise -F. */ |
| save_switch (concat ("-F", arg, NULL), 0, NULL, validated, true); |
| return true; |
| |
| case OPT_save_temps: |
| save_temps_flag = SAVE_TEMPS_CWD; |
| validated = true; |
| break; |
| |
| case OPT_save_temps_: |
| if (strcmp (arg, "cwd") == 0) |
| save_temps_flag = SAVE_TEMPS_CWD; |
| else if (strcmp (arg, "obj") == 0 |
| || strcmp (arg, "object") == 0) |
| save_temps_flag = SAVE_TEMPS_OBJ; |
| else |
| fatal_error ("%qs is an unknown -save-temps option", |
| decoded->orig_option_with_args_text); |
| break; |
| |
| case OPT_canonical_prefixes: |
| case OPT_no_canonical_prefixes: |
| /* Already handled as a special case, so ignored here. */ |
| do_save = false; |
| break; |
| |
| case OPT_pipe: |
| validated = true; |
| /* These options set the variables specified in common.opt |
| automatically, but do need to be saved for spec |
| processing. */ |
| break; |
| |
| case OPT_specs_: |
| { |
| struct user_specs *user = XNEW (struct user_specs); |
| |
| user->next = (struct user_specs *) 0; |
| user->filename = arg; |
| if (user_specs_tail) |
| user_specs_tail->next = user; |
| else |
| user_specs_head = user; |
| user_specs_tail = user; |
| } |
| validated = true; |
| break; |
| |
| case OPT__sysroot_: |
| target_system_root = arg; |
| target_system_root_changed = 1; |
| do_save = false; |
| break; |
| |
| case OPT_time_: |
| if (report_times_to_file) |
| fclose (report_times_to_file); |
| report_times_to_file = fopen (arg, "a"); |
| do_save = false; |
| break; |
| |
| case OPT____: |
| /* "-###" |
| This is similar to -v except that there is no execution |
| of the commands and the echoed arguments are quoted. It |
| is intended for use in shell scripts to capture the |
| driver-generated command line. */ |
| verbose_only_flag++; |
| verbose_flag = 1; |
| do_save = false; |
| break; |
| |
| case OPT_B: |
| { |
| size_t len = strlen (arg); |
| |
| /* Catch the case where the user has forgotten to append a |
| directory separator to the path. Note, they may be using |
| -B to add an executable name prefix, eg "i386-elf-", in |
| order to distinguish between multiple installations of |
| GCC in the same directory. Hence we must check to see |
| if appending a directory separator actually makes a |
| valid directory name. */ |
| if (!IS_DIR_SEPARATOR (arg[len - 1]) |
| && is_directory (arg, false)) |
| { |
| char *tmp = XNEWVEC (char, len + 2); |
| strcpy (tmp, arg); |
| tmp[len] = DIR_SEPARATOR; |
| tmp[++len] = 0; |
| arg = tmp; |
| } |
| |
| add_prefix (&exec_prefixes, arg, NULL, |
| PREFIX_PRIORITY_B_OPT, 0, 0); |
| add_prefix (&startfile_prefixes, arg, NULL, |
| PREFIX_PRIORITY_B_OPT, 0, 0); |
| add_prefix (&include_prefixes, arg, NULL, |
| PREFIX_PRIORITY_B_OPT, 0, 0); |
| } |
| validated = true; |
| break; |
| |
| case OPT_x: |
| spec_lang = arg; |
| if (!strcmp (spec_lang, "none")) |
| /* Suppress the warning if -xnone comes after the last input |
| file, because alternate command interfaces like g++ might |
| find it useful to place -xnone after each input file. */ |
| spec_lang = 0; |
| else |
| last_language_n_infiles = n_infiles; |
| do_save = false; |
| break; |
| |
| case OPT_o: |
| have_o = 1; |
| #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX) |
| arg = convert_filename (arg, ! have_c, 0); |
| #endif |
| /* Save the output name in case -save-temps=obj was used. */ |
| save_temps_prefix = xstrdup (arg); |
| /* On some systems, ld cannot handle "-o" without a space. So |
| split the option from its argument. */ |
| save_switch ("-o", 1, &arg, validated, true); |
| return true; |
| |
| case OPT_static_libgcc: |
| case OPT_shared_libgcc: |
| case OPT_static_libgfortran: |
| case OPT_static_libstdc__: |
| /* These are always valid, since gcc.c itself understands the |
| first two, gfortranspec.c understands -static-libgfortran and |
| g++spec.c understands -static-libstdc++ */ |
| validated = true; |
| break; |
| |
| case OPT_fwpa: |
| flag_wpa = ""; |
| break; |
| |
| default: |
| /* Various driver options need no special processing at this |
| point, having been handled in a prescan above or being |
| handled by specs. */ |
| break; |
| } |
| |
| if (do_save) |
| save_switch (decoded->canonical_option[0], |
| decoded->canonical_option_num_elements - 1, |
| &decoded->canonical_option[1], validated, true); |
| return true; |
| } |
| |
| /* Put the driver's standard set of option handlers in *HANDLERS. */ |
| |
| static void |
| set_option_handlers (struct cl_option_handlers *handlers) |
| { |
| handlers->unknown_option_callback = driver_unknown_option_callback; |
| handlers->wrong_lang_callback = driver_wrong_lang_callback; |
| handlers->num_handlers = 3; |
| handlers->handlers[0].handler = driver_handle_option; |
| handlers->handlers[0].mask = CL_DRIVER; |
| handlers->handlers[1].handler = common_handle_option; |
| handlers->handlers[1].mask = CL_COMMON; |
| handlers->handlers[2].handler = target_handle_option; |
| handlers->handlers[2].mask = CL_TARGET; |
| } |
| |
| /* Create the vector `switches' and its contents. |
| Store its length in `n_switches'. */ |
| |
| static void |
| process_command (unsigned int decoded_options_count, |
| struct cl_decoded_option *decoded_options) |
| { |
| const char *temp; |
| char *temp1; |
| char *tooldir_prefix, *tooldir_prefix2; |
| char *(*get_relative_prefix) (const char *, const char *, |
| const char *) = NULL; |
| struct cl_option_handlers handlers; |
| unsigned int j; |
| |
| gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX"); |
| |
| n_switches = 0; |
| n_infiles = 0; |
| added_libraries = 0; |
| |
| /* Figure compiler version from version string. */ |
| |
| compiler_version = temp1 = xstrdup (version_string); |
| |
| for (; *temp1; ++temp1) |
| { |
| if (*temp1 == ' ') |
| { |
| *temp1 = '\0'; |
| break; |
| } |
| } |
| |
| /* Handle any -[no-]canonical-prefixes flags early, to assign the function |
| that builds relative prefixes. This function creates default search |
| paths that are needed later in normal option handling. */ |
| |
| for (j = 1; j < decoded_options_count; j++) |
| { |
| if (decoded_options[j].opt_index == OPT_canonical_prefixes) |
| get_relative_prefix = make_relative_prefix; |
| else if (decoded_options[j].opt_index == OPT_no_canonical_prefixes) |
| get_relative_prefix = make_relative_prefix_ignore_links; |
| } |
| if (! get_relative_prefix) |
| { |
| #ifdef ENABLE_CANONICAL_PREFIXES |
| get_relative_prefix = make_relative_prefix; |
| #else |
| get_relative_prefix = make_relative_prefix_ignore_links; |
| #endif |
| } |
| |
| /* Set up the default search paths. If there is no GCC_EXEC_PREFIX, |
| see if we can create it from the pathname specified in |
| decoded_options[0].arg. */ |
| |
| gcc_libexec_prefix = standard_libexec_prefix; |
| #ifndef VMS |
| /* FIXME: make_relative_prefix doesn't yet work for VMS. */ |
| if (!gcc_exec_prefix) |
| { |
| gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg, |
| standard_bindir_prefix, |
| standard_exec_prefix); |
| gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg, |
| standard_bindir_prefix, |
| standard_libexec_prefix); |
| if (gcc_exec_prefix) |
| xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL)); |
| } |
| else |
| { |
| /* make_relative_prefix requires a program name, but |
| GCC_EXEC_PREFIX is typically a directory name with a trailing |
| / (which is ignored by make_relative_prefix), so append a |
| program name. */ |
| char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL); |
| gcc_libexec_prefix = get_relative_prefix (tmp_prefix, |
| standard_exec_prefix, |
| standard_libexec_prefix); |
| |
| /* The path is unrelocated, so fallback to the original setting. */ |
| if (!gcc_libexec_prefix) |
| gcc_libexec_prefix = standard_libexec_prefix; |
| |
| free (tmp_prefix); |
| } |
| #else |
| #endif |
| /* From this point onward, gcc_exec_prefix is non-null if the toolchain |
| is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX |
| or an automatically created GCC_EXEC_PREFIX from |
| decoded_options[0].arg. */ |
| |
| /* Do language-specific adjustment/addition of flags. */ |
| lang_specific_driver (&decoded_options, &decoded_options_count, |
| &added_libraries); |
| |
| if (gcc_exec_prefix) |
| { |
| int len = strlen (gcc_exec_prefix); |
| |
| if (len > (int) sizeof ("/lib/gcc/") - 1 |
| && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1]))) |
| { |
| temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1; |
| if (IS_DIR_SEPARATOR (*temp) |
| && filename_ncmp (temp + 1, "lib", 3) == 0 |
| && IS_DIR_SEPARATOR (temp[4]) |
| && filename_ncmp (temp + 5, "gcc", 3) == 0) |
| len -= sizeof ("/lib/gcc/") - 1; |
| } |
| |
| set_std_prefix (gcc_exec_prefix, len); |
| add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC", |
| PREFIX_PRIORITY_LAST, 0, 0); |
| add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC", |
| PREFIX_PRIORITY_LAST, 0, 0); |
| } |
| |
| /* COMPILER_PATH and LIBRARY_PATH have values |
| that are lists of directory names with colons. */ |
| |
| temp = getenv ("COMPILER_PATH"); |
| if (temp) |
| { |
| const char *startp, *endp; |
| char *nstore = (char *) alloca (strlen (temp) + 3); |
| |
| startp = endp = temp; |
| while (1) |
| { |
| if (*endp == PATH_SEPARATOR || *endp == 0) |
| { |
| strncpy (nstore, startp, endp - startp); |
| if (endp == startp) |
| strcpy (nstore, concat (".", dir_separator_str, NULL)); |
| else if (!IS_DIR_SEPARATOR (endp[-1])) |
| { |
| nstore[endp - startp] = DIR_SEPARATOR; |
| nstore[endp - startp + 1] = 0; |
| } |
| else |
| nstore[endp - startp] = 0; |
| add_prefix (&exec_prefixes, nstore, 0, |
| PREFIX_PRIORITY_LAST, 0, 0); |
| add_prefix (&include_prefixes, nstore, 0, |
| PREFIX_PRIORITY_LAST, 0, 0); |
| if (*endp == 0) |
| break; |
| endp = startp = endp + 1; |
| } |
| else |
| endp++; |
| } |
| } |
| |
| temp = getenv (LIBRARY_PATH_ENV); |
| if (temp && *cross_compile == '0') |
| { |
| const char *startp, *endp; |
| char *nstore = (char *) alloca (strlen (temp) + 3); |
| |
| startp = endp = temp; |
| while (1) |
| { |
| if (*endp == PATH_SEPARATOR || *endp == 0) |
| { |
| strncpy (nstore, startp, endp - startp); |
| if (endp == startp) |
| strcpy (nstore, concat (".", dir_separator_str, NULL)); |
| else if (!IS_DIR_SEPARATOR (endp[-1])) |
| { |
| nstore[endp - startp] = DIR_SEPARATOR; |
| nstore[endp - startp + 1] = 0; |
| } |
| else |
| nstore[endp - startp] = 0; |
| add_prefix (&startfile_prefixes, nstore, NULL, |
| PREFIX_PRIORITY_LAST, 0, 1); |
| if (*endp == 0) |
| break; |
| endp = startp = endp + 1; |
| } |
| else |
| endp++; |
| } |
| } |
| |
| /* Use LPATH like LIBRARY_PATH (for the CMU build program). */ |
| temp = getenv ("LPATH"); |
| if (temp && *cross_compile == '0') |
| { |
| const char *startp, *endp; |
| char *nstore = (char *) alloca (strlen (temp) + 3); |
| |
| startp = endp = temp; |
| while (1) |
| { |
| if (*endp == PATH_SEPARATOR || *endp == 0) |
| { |
| strncpy (nstore, startp, endp - startp); |
| if (endp == startp) |
| strcpy (nstore, concat (".", dir_separator_str, NULL)); |
| else if (!IS_DIR_SEPARATOR (endp[-1])) |
| { |
| nstore[endp - startp] = DIR_SEPARATOR; |
| nstore[endp - startp + 1] = 0; |
| } |
| else |
| nstore[endp - startp] = 0; |
| add_prefix (&startfile_prefixes, nstore, NULL, |
| PREFIX_PRIORITY_LAST, 0, 1); |
| if (*endp == 0) |
| break; |
| endp = startp = endp + 1; |
| } |
| else |
| endp++; |
| } |
| } |
| |
| /* Process the options and store input files and switches in their |
| vectors. */ |
| |
| last_language_n_infiles = -1; |
| |
| set_option_handlers (&handlers); |
| |
| for (j = 1; j < decoded_options_count; j++) |
| { |
| switch (decoded_options[j].opt_index) |
| { |
| case OPT_S: |
| case OPT_c: |
| case OPT_E: |
| have_c = 1; |
| break; |
| } |
| if (have_c) |
| break; |
| } |
| |
| for (j = 1; j < decoded_options_count; j++) |
| { |
| if (decoded_options[j].opt_index == OPT_SPECIAL_input_file) |
| { |
| const char *arg = decoded_options[j].arg; |
| const char *p = strrchr (arg, '@'); |
| char *fname; |
| long offset; |
| int consumed; |
| #ifdef HAVE_TARGET_OBJECT_SUFFIX |
| arg = convert_filename (arg, 0, access (arg, F_OK)); |
| #endif |
| /* For LTO static archive support we handle input file |
| specifications that are composed of a filename and |
| an offset like FNAME@OFFSET. */ |
| if (p |
| && p != arg |
| && sscanf (p, "@%li%n", &offset, &consumed) >= 1 |
| && strlen (p) == (unsigned int)consumed) |
| { |
| fname = (char *)xmalloc (p - arg + 1); |
| memcpy (fname, arg, p - arg); |
| fname[p - arg] = '\0'; |
| /* Only accept non-stdin and existing FNAME parts, otherwise |
| try with the full name. */ |
| if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0) |
| { |
| free (fname); |
| fname = xstrdup (arg); |
| } |
| } |
| else |
| fname = xstrdup (arg); |
| |
| if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0) |
| perror_with_name (fname); |
| else |
| add_infile (arg, spec_lang); |
| |
| free (fname); |
| continue; |
| } |
| |
| read_cmdline_option (&global_options, &global_options_set, |
| decoded_options + j, UNKNOWN_LOCATION, |
| CL_DRIVER, &handlers, global_dc); |
| } |
| |
| /* If -save-temps=obj and -o name, create the prefix to use for %b. |
| Otherwise just make -save-temps=obj the same as -save-temps=cwd. */ |
| if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL) |
| { |
| save_temps_length = strlen (save_temps_prefix); |
| temp = strrchr (lbasename (save_temps_prefix), '.'); |
| if (temp) |
| { |
| save_temps_length -= strlen (temp); |
| save_temps_prefix[save_temps_length] = '\0'; |
| } |
| |
| } |
| else if (save_temps_prefix != NULL) |
| { |
| free (save_temps_prefix); |
| save_temps_prefix = NULL; |
| } |
| |
| if (save_temps_flag && use_pipes) |
| { |
| /* -save-temps overrides -pipe, so that temp files are produced */ |
| if (save_temps_flag) |
| warning (0, "-pipe ignored because -save-temps specified"); |
| use_pipes = 0; |
| } |
| |
| if (!compare_debug) |
| { |
| const char *gcd = getenv ("GCC_COMPARE_DEBUG"); |
| |
| if (gcd && gcd[0] == '-') |
| { |
| compare_debug = 2; |
| compare_debug_opt = gcd; |
| } |
| else if (gcd && *gcd && strcmp (gcd, "0")) |
| { |
| compare_debug = 3; |
| compare_debug_opt = "-gtoggle"; |
| } |
| } |
| else if (compare_debug < 0) |
| { |
| compare_debug = 0; |
| gcc_assert (!compare_debug_opt); |
| } |
| |
| /* Set up the search paths. We add directories that we expect to |
| contain GNU Toolchain components before directories specified by |
| the machine description so that we will find GNU components (like |
| the GNU assembler) before those of the host system. */ |
| |
| /* If we don't know where the toolchain has been installed, use the |
| configured-in locations. */ |
| if (!gcc_exec_prefix) |
| { |
| #ifndef OS2 |
| add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC", |
| PREFIX_PRIORITY_LAST, 1, 0); |
| add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS", |
| PREFIX_PRIORITY_LAST, 2, 0); |
| add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS", |
| PREFIX_PRIORITY_LAST, 2, 0); |
| #endif |
| add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS", |
| PREFIX_PRIORITY_LAST, 1, 0); |
| } |
| |
| gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix)); |
| tooldir_prefix2 = concat (tooldir_base_prefix, spec_machine, |
| dir_separator_str, NULL); |
| |
| /* Look for tools relative to the location from which the driver is |
| running, or, if that is not available, the configured prefix. */ |
| tooldir_prefix |
| = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix, |
| spec_machine, dir_separator_str, |
| spec_version, dir_separator_str, tooldir_prefix2, NULL); |
| free (tooldir_prefix2); |
| |
| add_prefix (&exec_prefixes, |
| concat (tooldir_prefix, "bin", dir_separator_str, NULL), |
| "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0); |
| add_prefix (&startfile_prefixes, |
| concat (tooldir_prefix, "lib", dir_separator_str, NULL), |
| "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1); |
| free (tooldir_prefix); |
| |
| #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS) |
| /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix, |
| then consider it to relocate with the rest of the GCC installation |
| if GCC_EXEC_PREFIX is set. |
| ``make_relative_prefix'' is not compiled for VMS, so don't call it. */ |
| if (target_system_root && !target_system_root_changed && gcc_exec_prefix) |
| { |
| char *tmp_prefix = get_relative_prefix (decoded_options[0].arg, |
| standard_bindir_prefix, |
| target_system_root); |
| if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0) |
| { |
| target_system_root = tmp_prefix; |
| target_system_root_changed = 1; |
| } |
| } |
| #endif |
| |
| /* More prefixes are enabled in main, after we read the specs file |
| and determine whether this is cross-compilation or not. */ |
| |
| if (n_infiles == last_language_n_infiles && spec_lang != 0) |
| warning (0, "%<-x %s%> after last input file has no effect", spec_lang); |
| |
| /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG |
| environment variable. */ |
| if (compare_debug == 2 || compare_debug == 3) |
| { |
| const char *opt = concat ("-fcompare-debug=", compare_debug_opt, NULL); |
| save_switch (opt, 0, NULL, false, true); |
| compare_debug = 1; |
| } |
| |
| /* Ensure we only invoke each subprocess once. */ |
| if (print_subprocess_help || print_help_list || print_version) |
| { |
| n_infiles = 0; |
| |
| /* Create a dummy input file, so that we can pass |
| the help option on to the various sub-processes. */ |
| add_infile ("help-dummy", "c"); |
| } |
| |
| alloc_switch (); |
| switches[n_switches].part1 = 0; |
| alloc_infile (); |
| infiles[n_infiles].name = 0; |
| } |
| |
| /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS |
| and place that in the environment. */ |
| |
| static void |
| set_collect_gcc_options (void) |
| { |
| int i; |
| int first_time; |
| |
| /* Build COLLECT_GCC_OPTIONS to have all of the options specified to |
| the compiler. */ |
| obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=", |
| sizeof ("COLLECT_GCC_OPTIONS=") - 1); |
| |
| first_time = TRUE; |
| for (i = 0; (int) i < n_switches; i++) |
| { |
| const char *const *args; |
| const char *p, *q; |
| if (!first_time) |
| obstack_grow (&collect_obstack, " ", 1); |
| |
| first_time = FALSE; |
| |
| /* Ignore elided switches. */ |
| if ((switches[i].live_cond |
| & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC)) |
| == SWITCH_IGNORE) |
| continue; |
| |
| obstack_grow (&collect_obstack, "'-", 2); |
| q = switches[i].part1; |
| while ((p = strchr (q, '\''))) |
| { |
| obstack_grow (&collect_obstack, q, p - q); |
| obstack_grow (&collect_obstack, "'\\''", 4); |
| q = ++p; |
| } |
| obstack_grow (&collect_obstack, q, strlen (q)); |
| obstack_grow (&collect_obstack, "'", 1); |
| |
| for (args = switches[i].args; args && *args; args++) |
| { |
| obstack_grow (&collect_obstack, " '", 2); |
| q = *args; |
| while ((p = strchr (q, '\''))) |
| { |
| obstack_grow (&collect_obstack, q, p - q); |
| obstack_grow (&collect_obstack, "'\\''", 4); |
| q = ++p; |
| } |
| obstack_grow (&collect_obstack, q, strlen (q)); |
| obstack_grow (&collect_obstack, "'", 1); |
| } |
| } |
| obstack_grow (&collect_obstack, "\0", 1); |
| xputenv (XOBFINISH (&collect_obstack, char *)); |
| } |
| |
| /* Process a spec string, accumulating and running commands. */ |
| |
| /* These variables describe the input file name. |
| input_file_number is the index on outfiles of this file, |
| so that the output file name can be stored for later use by %o. |
| input_basename is the start of the part of the input file |
| sans all directory names, and basename_length is the number |
| of characters starting there excluding the suffix .c or whatever. */ |
| |
| static const char *gcc_input_filename; |
| static int input_file_number; |
| size_t input_filename_length; |
| static int basename_length; |
| static int suffixed_basename_length; |
| static const char *input_basename; |
| static const char *input_suffix; |
| #ifndef HOST_LACKS_INODE_NUMBERS |
| static struct stat input_stat; |
| #endif |
| static int input_stat_set; |
| |
| /* The compiler used to process the current input file. */ |
| static struct compiler *input_file_compiler; |
| |
| /* These are variables used within do_spec and do_spec_1. */ |
| |
| /* Nonzero if an arg has been started and not yet terminated |
| (with space, tab or newline). */ |
| static int arg_going; |
| |
| /* Nonzero means %d or %g has been seen; the next arg to be terminated |
| is a temporary file name. */ |
| static int delete_this_arg; |
| |
| /* Nonzero means %w has been seen; the next arg to be terminated |
| is the output file name of this compilation. */ |
| static int this_is_output_file; |
| |
| /* Nonzero means %s has been seen; the next arg to be terminated |
| is the name of a library file and we should try the standard |
| search dirs for it. */ |
| static int this_is_library_file; |
| |
| /* Nonzero means %T has been seen; the next arg to be terminated |
| is the name of a linker script and we should try all of the |
| standard search dirs for it. If it is found insert a --script |
| command line switch and then substitute the full path in place, |
| otherwise generate an error message. */ |
| static int this_is_linker_script; |
| |
| /* Nonzero means that the input of this command is coming from a pipe. */ |
| static int input_from_pipe; |
| |
| /* Nonnull means substitute this for any suffix when outputting a switches |
| arguments. */ |
| static const char *suffix_subst; |
| |
| /* If there is an argument being accumulated, terminate it and store it. */ |
| |
| static void |
| end_going_arg (void) |
| { |
| if (arg_going) |
| { |
| const char *string; |
| |
| obstack_1grow (&obstack, 0); |
| string = XOBFINISH (&obstack, const char *); |
| if (this_is_library_file) |
| string = find_file (string); |
| if (this_is_linker_script) |
| { |
| char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true); |
| |
| if (full_script_path == NULL) |
| { |
| error ("unable to locate default linker script %qs in the library search paths", string); |
| /* Script was not found on search path. */ |
| return; |
| } |
| store_arg ("--script", false, false); |
| string = full_script_path; |
| } |
| store_arg (string, delete_this_arg, this_is_output_file); |
| if (this_is_output_file) |
| outfiles[input_file_number] = string; |
| arg_going = 0; |
| } |
| } |
| |
| |
| /* Parse the WRAPPER string which is a comma separated list of the command line |
| and insert them into the beginning of argbuf. */ |
| |
| static void |
| insert_wrapper (const char *wrapper) |
| { |
| int n = 0; |
| int i; |
| char *buf = xstrdup (wrapper); |
| char *p = buf; |
| unsigned int old_length = argbuf.length (); |
| |
| do |
| { |
| n++; |
| while (*p == ',') |
| p++; |
| } |
| while ((p = strchr (p, ',')) != NULL); |
| |
| argbuf.safe_grow (old_length + n); |
| memmove (argbuf.address () + n, |
| argbuf.address (), |
| old_length * sizeof (const_char_p)); |
| |
| i = 0; |
| p = buf; |
| do |
| { |
| while (*p == ',') |
| { |
| *p = 0; |
| p++; |
| } |
| argbuf[i] = p; |
| i++; |
| } |
| while ((p = strchr (p, ',')) != NULL); |
| gcc_assert (i == n); |
| } |
| |
| /* Process the spec SPEC and run the commands specified therein. |
| Returns 0 if the spec is successfully processed; -1 if failed. */ |
| |
| int |
| do_spec (const char *spec) |
| { |
| int value; |
| |
| value = do_spec_2 (spec); |
| |
| /* Force out any unfinished command. |
| If -pipe, this forces out the last command if it ended in `|'. */ |
| if (value == 0) |
| { |
| if (argbuf.length () > 0 |
| && !strcmp (argbuf.last (), "|")) |
| argbuf.pop (); |
| |
| set_collect_gcc_options (); |
| |
| if (argbuf.length () > 0) |
| value = execute (); |
| } |
| |
| return value; |
| } |
| |
| static int |
| do_spec_2 (const char *spec) |
| { |
| int result; |
| |
| clear_args (); |
| arg_going = 0; |
| delete_this_arg = 0; |
| this_is_output_file = 0; |
| this_is_library_file = 0; |
| this_is_linker_script = 0; |
| input_from_pipe = 0; |
| suffix_subst = NULL; |
| |
| result = do_spec_1 (spec, 0, NULL); |
| |
| end_going_arg (); |
| |
| return result; |
| } |
| |
| |
| /* Process the given spec string and add any new options to the end |
| of the switches/n_switches array. */ |
| |
| static void |
| do_option_spec (const char *name, const char *spec) |
| { |
| unsigned int i, value_count, value_len; |
| const char *p, *q, *value; |
| char *tmp_spec, *tmp_spec_p; |
| |
| if (configure_default_options[0].name == NULL) |
| return; |
| |
| for (i = 0; i < ARRAY_SIZE (configure_default_options); i++) |
| if (strcmp (configure_default_options[i].name, name) == 0) |
| break; |
| if (i == ARRAY_SIZE (configure_default_options)) |
| return; |
| |
| value = configure_default_options[i].value; |
| value_len = strlen (value); |
| |
| /* Compute the size of the final spec. */ |
| value_count = 0; |
| p = spec; |
| while ((p = strstr (p, "%(VALUE)")) != NULL) |
| { |
| p ++; |
| value_count ++; |
| } |
| |
| /* Replace each %(VALUE) by the specified value. */ |
| tmp_spec = (char *) alloca (strlen (spec) + 1 |
| + value_count * (value_len - strlen ("%(VALUE)"))); |
| tmp_spec_p = tmp_spec; |
| q = spec; |
| while ((p = strstr (q, "%(VALUE)")) != NULL) |
| { |
| memcpy (tmp_spec_p, q, p - q); |
| tmp_spec_p = tmp_spec_p + (p - q); |
| memcpy (tmp_spec_p, value, value_len); |
| tmp_spec_p += value_len; |
| q = p + strlen ("%(VALUE)"); |
| } |
| strcpy (tmp_spec_p, q); |
| |
| do_self_spec (tmp_spec); |
| } |
| |
| /* Process the given spec string and add any new options to the end |
| of the switches/n_switches array. */ |
| |
| static void |
| do_self_spec (const char *spec) |
| { |
| int i; |
| |
| do_spec_2 (spec); |
| do_spec_1 (" ", 0, NULL); |
| |
| /* Mark %<S switches processed by do_self_spec to be ignored permanently. |
| do_self_specs adds the replacements to switches array, so it shouldn't |
| be processed afterwards. */ |
| for (i = 0; i < n_switches; i++) |
| if ((switches[i].live_cond & SWITCH_IGNORE)) |
| switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY; |
| |
| if (argbuf.length () > 0) |
| { |
| const char **argbuf_copy; |
| struct cl_decoded_option *decoded_options; |
| struct cl_option_handlers handlers; |
| unsigned int decoded_options_count; |
| unsigned int j; |
| |
| /* Create a copy of argbuf with a dummy argv[0] entry for |
| decode_cmdline_options_to_array. */ |
| argbuf_copy = XNEWVEC (const char *, |
| argbuf.length () + 1); |
| argbuf_copy[0] = ""; |
| memcpy (argbuf_copy + 1, argbuf.address (), |
| argbuf.length () * sizeof (const char *)); |
| |
| decode_cmdline_options_to_array (argbuf.length () + 1, |
| argbuf_copy, |
| CL_DRIVER, &decoded_options, |
| &decoded_options_count); |
| free (argbuf_copy); |
| |
| set_option_handlers (&handlers); |
| |
| for (j = 1; j < decoded_options_count; j++) |
| { |
| switch (decoded_options[j].opt_index) |
| { |
| case OPT_SPECIAL_input_file: |
| /* Specs should only generate options, not input |
| files. */ |
| if (strcmp (decoded_options[j].arg, "-") != 0) |
| fatal_error ("switch %qs does not start with %<-%>", |
| decoded_options[j].arg); |
| else |
| fatal_error ("spec-generated switch is just %<-%>"); |
| break; |
| |
| case OPT_fcompare_debug_second: |
| case OPT_fcompare_debug: |
| case OPT_fcompare_debug_: |
| case OPT_o: |
| /* Avoid duplicate processing of some options from |
| compare-debug specs; just save them here. */ |
| save_switch (decoded_options[j].canonical_option[0], |
| (decoded_options[j].canonical_option_num_elements |
| - 1), |
| &decoded_options[j].canonical_option[1], false, true); |
| break; |
| |
| default: |
| read_cmdline_option (&global_options, &global_options_set, |
| decoded_options + j, UNKNOWN_LOCATION, |
| CL_DRIVER, &handlers, global_dc); |
| break; |
| } |
| } |
| |
| alloc_switch (); |
| switches[n_switches].part1 = 0; |
| } |
| } |
| |
| /* Callback for processing %D and %I specs. */ |
| |
| struct spec_path_info { |
| const char *option; |
| const char *append; |
| size_t append_len; |
| bool omit_relative; |
| bool separate_options; |
| }; |
| |
| static void * |
| spec_path (char *path, void *data) |
| { |
| struct spec_path_info *info = (struct spec_path_info *) data; |
| size_t len = 0; |
| char save = 0; |
| |
| if (info->omit_relative && !IS_ABSOLUTE_PATH (path)) |
| return NULL; |
| |
| if (info->append_len != 0) |
| { |
| len = strlen (path); |
| memcpy (path + len, info->append, info->append_len + 1); |
| } |
| |
| if (!is_directory (path, true)) |
| return NULL; |
| |
| do_spec_1 (info->option, 1, NULL); |
| if (info->separate_options) |
| do_spec_1 (" ", 0, NULL); |
| |
| if (info->append_len == 0) |
| { |
| len = strlen (path); |
| save = path[len - 1]; |
| if (IS_DIR_SEPARATOR (path[len - 1])) |
| path[len - 1] = '\0'; |
| } |
| |
| do_spec_1 (path, 1, NULL); |
| do_spec_1 (" ", 0, NULL); |
| |
| /* Must not damage the original path. */ |
| if (info->append_len == 0) |
| path[len - 1] = save; |
| |
| return NULL; |
| } |
| |
| /* Create a temporary FILE with the contents of ARGV. Add @FILE to the |
| argument list. */ |
| |
| static void |
| create_at_file (char **argv) |
| { |
| char *temp_file = make_temp_file (""); |
| char *at_argument = concat ("@", temp_file, NULL); |
| FILE *f = fopen (temp_file, "w"); |
| int status; |
| |
| if (f == NULL) |
| fatal_error ("could not open temporary response file %s", |
| temp_file); |
| |
| status = writeargv (argv, f); |
| |
| if (status) |
| fatal_error ("could not write to temporary response file %s", |
| temp_file); |
| |
| status = fclose (f); |
| |
| if (EOF == status) |
| fatal_error ("could not close temporary response file %s", |
| temp_file); |
| |
| store_arg (at_argument, 0, 0); |
| |
| record_temp_file (temp_file, !save_temps_flag, !save_temps_flag); |
| } |
| |
| /* True if we should compile INFILE. */ |
| |
| static bool |
| compile_input_file_p (struct infile *infile) |
| { |
| if ((!infile->language) || (infile->language[0] != '*')) |
| if (infile->incompiler == input_file_compiler) |
| return true; |
| return false; |
| } |
| |
| /* Process each member of VEC as a spec. */ |
| |
| static void |
| do_specs_vec (vec<char_p> vec) |
| { |
| unsigned ix; |
| char *opt; |
| |
| FOR_EACH_VEC_ELT (vec, ix, opt) |
| { |
| do_spec_1 (opt, 1, NULL); |
| /* Make each accumulated option a separate argument. */ |
| do_spec_1 (" ", 0, NULL); |
| } |
| } |
| |
| /* Process the sub-spec SPEC as a portion of a larger spec. |
| This is like processing a whole spec except that we do |
| not initialize at the beginning and we do not supply a |
| newline by default at the end. |
| INSWITCH nonzero means don't process %-sequences in SPEC; |
| in this case, % is treated as an ordinary character. |
| This is used while substituting switches. |
| INSWITCH nonzero also causes SPC not to terminate an argument. |
| |
| Value is zero unless a line was finished |
| and the command on that line reported an error. */ |
| |
| static int |
| do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) |
| { |
| const char *p = spec; |
| int c; |
| int i; |
| int value; |
| |
| /* If it's an empty string argument to a switch, keep it as is. */ |
| if (inswitch && !*p) |
| arg_going = 1; |
| |
| while ((c = *p++)) |
| /* If substituting a switch, treat all chars like letters. |
| Otherwise, NL, SPC, TAB and % are special. */ |
| switch (inswitch ? 'a' : c) |
| { |
| case '\n': |
| end_going_arg (); |
| |
| if (argbuf.length () > 0 |
| && !strcmp (argbuf.last (), "|")) |
| { |
| /* A `|' before the newline means use a pipe here, |
| but only if -pipe was specified. |
| Otherwise, execute now and don't pass the `|' as an arg. */ |
| if (use_pipes) |
| { |
| input_from_pipe = 1; |
| break; |
| } |
| else |
| argbuf.pop (); |
| } |
| |
| set_collect_gcc_options (); |
| |
| if (argbuf.length () > 0) |
| { |
| value = execute (); |
| if (value) |
| return value; |
| } |
| /* Reinitialize for a new command, and for a new argument. */ |
| clear_args (); |
| arg_going = 0; |
| delete_this_arg = 0; |
| this_is_output_file = 0; |
| this_is_library_file = 0; |
| this_is_linker_script = 0; |
| input_from_pipe = 0; |
| break; |
| |
| case '|': |
| end_going_arg (); |
| |
| /* Use pipe */ |
| obstack_1grow (&obstack, c); |
| arg_going = 1; |
| break; |
| |
| case '\t': |
| case ' ': |
| end_going_arg (); |
| |
| /* Reinitialize for a new argument. */ |
| delete_this_arg = 0; |
| this_is_output_file = 0; |
| this_is_library_file = 0; |
| this_is_linker_script = 0; |
| break; |
| |
| case '%': |
| switch (c = *p++) |
| { |
| case 0: |
| fatal_error ("spec %qs invalid", spec); |
| |
| case 'b': |
| if (save_temps_length) |
| obstack_grow (&obstack, save_temps_prefix, save_temps_length); |
| else |
| obstack_grow (&obstack, input_basename, basename_length); |
| if (compare_debug < 0) |
| obstack_grow (&obstack, ".gk", 3); |
| arg_going = 1; |
| break; |
| |
| case 'B': |
| if (save_temps_length) |
| obstack_grow (&obstack, save_temps_prefix, save_temps_length); |
| else |
| obstack_grow (&obstack, input_basename, suffixed_basename_length); |
| if (compare_debug < 0) |
| obstack_grow (&obstack, ".gk", 3); |
| arg_going = 1; |
| break; |
| |
| case 'd': |
| delete_this_arg = 2; |
| break; |
| |
| /* Dump out the directories specified with LIBRARY_PATH, |
| followed by the absolute directories |
| that we search for startfiles. */ |
| case 'D': |
| { |
| struct spec_path_info info; |
| |
| info.option = "-L"; |
| info.append_len = 0; |
| #ifdef RELATIVE_PREFIX_NOT_LINKDIR |
| /* Used on systems which record the specified -L dirs |
| and use them to search for dynamic linking. |
| Relative directories always come from -B, |
| and it is better not to use them for searching |
| at run time. In particular, stage1 loses. */ |
| info.omit_relative = true; |
| #else |
| info.omit_relative = false; |
| #endif |
| info.separate_options = false; |
| |
| for_each_path (&startfile_prefixes, true, 0, spec_path, &info); |
| } |
| break; |
| |
| case 'e': |
| /* %efoo means report an error with `foo' as error message |
| and don't execute any more commands for this file. */ |
| { |
| const char *q = p; |
| char *buf; |
| while (*p != 0 && *p != '\n') |
| p++; |
| buf = (char *) alloca (p - q + 1); |
| strncpy (buf, q, p - q); |
| buf[p - q] = 0; |
| error ("%s", _(buf)); |
| return -1; |
| } |
| break; |
| case 'n': |
| /* %nfoo means report a notice with `foo' on stderr. */ |
| { |
| const char *q = p; |
| char *buf; |
| while (*p != 0 && *p != '\n') |
| p++; |
| buf = (char *) alloca (p - q + 1); |
| strncpy (buf, q, p - q); |
| buf[p - q] = 0; |
| inform (0, "%s", _(buf)); |
| if (*p) |
| p++; |
| } |
| break; |
| |
| case 'j': |
| { |
| struct stat st; |
| |
| /* If save_temps_flag is off, and the HOST_BIT_BUCKET is |
| defined, and it is not a directory, and it is |
| writable, use it. Otherwise, treat this like any |
| other temporary file. */ |
| |
| if ((!save_temps_flag) |
| && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode)) |
| && (access (HOST_BIT_BUCKET, W_OK) == 0)) |
| { |
| obstack_grow (&obstack, HOST_BIT_BUCKET, |
| strlen (HOST_BIT_BUCKET)); |
| delete_this_arg = 0; |
| arg_going = 1; |
| break; |
| } |
| } |
| goto create_temp_file; |
| case '|': |
| if (use_pipes) |
| { |
| obstack_1grow (&obstack, '-'); |
| delete_this_arg = 0; |
| arg_going = 1; |
| |
| /* consume suffix */ |
| while (*p == '.' || ISALNUM ((unsigned char) *p)) |
| p++; |
| if (p[0] == '%' && p[1] == 'O') |
| p += 2; |
| |
| break; |
| } |
| goto create_temp_file; |
| case 'm': |
| if (use_pipes) |
| { |
| /* consume suffix */ |
| while (*p == '.' || ISALNUM ((unsigned char) *p)) |
| p++; |
| if (p[0] == '%' && p[1] == 'O') |
| p += 2; |
| |
| break; |
| } |
| goto create_temp_file; |
| case 'g': |
| case 'u': |
| case 'U': |
| create_temp_file: |
| { |
| struct temp_name *t; |
| int suffix_length; |
| const char *suffix = p; |
| char *saved_suffix = NULL; |
| |
| while (*p == '.' || ISALNUM ((unsigned char) *p)) |
| p++; |
| suffix_length = p - suffix; |
| if (p[0] == '%' && p[1] == 'O') |
| { |
| p += 2; |
| /* We don't support extra suffix characters after %O. */ |
| if (*p == '.' || ISALNUM ((unsigned char) *p)) |
| fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p); |
| if (suffix_length == 0) |
| suffix = TARGET_OBJECT_SUFFIX; |
| else |
| { |
| saved_suffix |
| = XNEWVEC (char, suffix_length |
| + strlen (TARGET_OBJECT_SUFFIX)); |
| strncpy (saved_suffix, suffix, suffix_length); |
| strcpy (saved_suffix + suffix_length, |
| TARGET_OBJECT_SUFFIX); |
| } |
| suffix_length += strlen (TARGET_OBJECT_SUFFIX); |
| } |
| |
| if (compare_debug < 0) |
| { |
| suffix = concat (".gk", suffix, NULL); |
| suffix_length += 3; |
| } |
| |
| /* If -save-temps=obj and -o were specified, use that for the |
| temp file. */ |
| if (save_temps_length) |
| { |
| char *tmp; |
| temp_filename_length |
| = save_temps_length + suffix_length + 1; |
| tmp = (char *) alloca (temp_filename_length); |
| memcpy (tmp, save_temps_prefix, save_temps_length); |
| memcpy (tmp + save_temps_length, suffix, suffix_length); |
| tmp[save_temps_length + suffix_length] = '\0'; |
| temp_filename = save_string (tmp, save_temps_length |
| + suffix_length); |
| obstack_grow (&obstack, temp_filename, |
| temp_filename_length); |
| arg_going = 1; |
| delete_this_arg = 0; |
| break; |
| } |
| |
| /* If the gcc_input_filename has the same suffix specified |
| for the %g, %u, or %U, and -save-temps is specified, |
| we could end up using that file as an intermediate |
| thus clobbering the user's source file (.e.g., |
| gcc -save-temps foo.s would clobber foo.s with the |
| output of cpp0). So check for this condition and |
| generate a temp file as the intermediate. */ |
| |
| if (save_temps_flag) |
| { |
| char *tmp; |
| temp_filename_length = basename_length + suffix_length + 1; |
| tmp = (char *) alloca (temp_filename_length); |
| memcpy (tmp, input_basename, basename_length); |
| memcpy (tmp + basename_length, suffix, suffix_length); |
| tmp[basename_length + suffix_length] = '\0'; |
| temp_filename = tmp; |
| |
| if (filename_cmp (temp_filename, gcc_input_filename) != 0) |
| { |
| #ifndef HOST_LACKS_INODE_NUMBERS |
| struct stat st_temp; |
| |
| /* Note, set_input() resets input_stat_set to 0. */ |
| if (input_stat_set == 0) |
| { |
| input_stat_set = stat (gcc_input_filename, |
| &input_stat); |
| if (input_stat_set >= 0) |
| input_stat_set = 1; |
| } |
| |
| /* If we have the stat for the gcc_input_filename |
| and we can do the stat for the temp_filename |
| then the they could still refer to the same |
| file if st_dev/st_ino's are the same. */ |
| if (input_stat_set != 1 |
| || stat (temp_filename, &st_temp) < 0 |
| || input_stat.st_dev != st_temp.st_dev |
| || input_stat.st_ino != st_temp.st_ino) |
| #else |
| /* Just compare canonical pathnames. */ |
| char* input_realname = lrealpath (gcc_input_filename); |
| char* temp_realname = lrealpath (temp_filename); |
| bool files_differ = filename_cmp (input_realname, temp_realname); |
| free (input_realname); |
| free (temp_realname); |
| if (files_differ) |
| #endif |
| { |
| temp_filename = save_string (temp_filename, |
| temp_filename_length + 1); |
| obstack_grow (&obstack, temp_filename, |
| temp_filename_length); |
| arg_going = 1; |
| delete_this_arg = 0; |
| break; |
| } |
| } |
| } |
| |
| /* See if we already have an association of %g/%u/%U and |
| suffix. */ |
| for (t = temp_names; t; t = t->next) |
| if (t->length == suffix_length |
| && strncmp (t->suffix, suffix, suffix_length) == 0 |
| && t->unique == (c == 'u' || c == 'U' || c == 'j')) |
| break; |
| |
| /* Make a new association if needed. %u and %j |
| require one. */ |
| if (t == 0 || c == 'u' || c == 'j') |
| { |
| if (t == 0) |
| { |
| t = XNEW (struct temp_name); |
| t->next = temp_names; |
| temp_names = t; |
| } |
| t->length = suffix_length; |
| if (saved_suffix) |
| { |
| t->suffix = saved_suffix; |
| saved_suffix = NULL; |
| } |
| else |
| t->suffix = save_string (suffix, suffix_length); |
| t->unique = (c == 'u' || c == 'U' || c == 'j'); |
| temp_filename = make_temp_file (t->suffix); |
| temp_filename_length = strlen (temp_filename); |
| t->filename = temp_filename; |
| t->filename_length = temp_filename_length; |
| } |
| |
| free (saved_suffix); |
| |
| obstack_grow (&obstack, t->filename, t->filename_length); |
| delete_this_arg = 1; |
| } |
| arg_going = 1; |
| break; |
| |
| case 'i': |
| if (combine_inputs) |
| { |
| if (at_file_supplied) |
| { |
| /* We are going to expand `%i' to `@FILE', where FILE |
| is a newly-created temporary filename. The filenames |
| that would usually be expanded in place of %o will be |
| written to the temporary file. */ |
| char **argv; |
| int n_files = 0; |
| int j; |
| |
| for (i = 0; i < n_infiles; i++) |
| if (compile_input_file_p (&infiles[i])) |
| n_files++; |
| |
| argv = (char **) alloca (sizeof (char *) * (n_files + 1)); |
| |
| /* Copy the strings over. */ |
| for (i = 0, j = 0; i < n_infiles; i++) |
| if (compile_input_file_p (&infiles[i])) |
| { |
| argv[j] = CONST_CAST (char *, infiles[i].name); |
| infiles[i].compiled = true; |
| j++; |
| } |
| argv[j] = NULL; |
| |
| create_at_file (argv); |
| } |
| else |
| for (i = 0; (int) i < n_infiles; i++) |
| if (compile_input_file_p (&infiles[i])) |
| { |
| store_arg (infiles[i].name, 0, 0); |
| infiles[i].compiled = true; |
| } |
| } |
| else |
| { |
| obstack_grow (&obstack, gcc_input_filename, |
| input_filename_length); |
| arg_going = 1; |
| } |
| break; |
| |
| case 'I': |
| { |
| struct spec_path_info info; |
| |
| if (multilib_dir) |
| { |
| do_spec_1 ("-imultilib", 1, NULL); |
| /* Make this a separate argument. */ |
| do_spec_1 (" ", 0, NULL); |
| do_spec_1 (multilib_dir, 1, NULL); |
| do_spec_1 (" ", 0, NULL); |
| } |
| |
| if (multiarch_dir) |
| { |
| do_spec_1 ("-imultiarch", 1, NULL); |
| /* Make this a separate argument. */ |
| do_spec_1 (" ", 0, NULL); |
| do_spec_1 (multiarch_dir, 1, NULL); |
| do_spec_1 (" ", 0, NULL); |
| } |
| |
| if (gcc_exec_prefix) |
| { |
| do_spec_1 ("-iprefix", 1, NULL); |
| /* Make this a separate argument. */ |
| do_spec_1 (" ", 0, NULL); |
| do_spec_1 (gcc_exec_prefix, 1, NULL); |
| do_spec_1 (" ", 0, NULL); |
| } |
| |
| if (target_system_root_changed || |
| (target_system_root && target_sysroot_hdrs_suffix)) |
| { |
| do_spec_1 ("-isysroot", 1, NULL); |
| /* Make this a separate argument. */ |
| do_spec_1 (" ", 0, NULL); |
| do_spec_1 (target_system_root, 1, NULL); |
| if (target_sysroot_hdrs_suffix) |
| do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL); |
| do_spec_1 (" ", 0, NULL); |
| } |
| |
| info.option = "-isystem"; |
| info.append = "include"; |
| info.append_len = strlen (info.append); |
| info.omit_relative = false; |
| info.separate_options = true; |
| |
| for_each_path (&include_prefixes, false, info.append_len, |
| spec_path, &info); |
| |
| info.append = "include-fixed"; |
| if (*sysroot_hdrs_suffix_spec) |
| info.append = concat (info.append, dir_separator_str, |
| multilib_dir, NULL); |
| info.append_len = strlen (info.append); |
| for_each_path (&include_prefixes, false, info.append_len, |
| spec_path, &info); |
| } |
| break; |
| |
| case 'o': |
| { |
| int max = n_infiles; |
| max += lang_specific_extra_outfiles; |
| |
| if (HAVE_GNU_LD && at_file_supplied) |
| { |
| /* We are going to expand `%o' to `@FILE', where FILE |
| is a newly-created temporary filename. The filenames |
| that would usually be expanded in place of %o will be |
| written to the temporary file. */ |
| |
| char **argv; |
| int n_files, j; |
| |
| /* Convert OUTFILES into a form suitable for writeargv. */ |
| |
| /* Determine how many are non-NULL. */ |
| for (n_files = 0, i = 0; i < max; i++) |
| n_files += outfiles[i] != NULL; |
| |
| argv = (char **) alloca (sizeof (char *) * (n_files + 1)); |
| |
| /* Copy the strings over. */ |
| for (i = 0, j = 0; i < max; i++) |
| if (outfiles[i]) |
| { |
| argv[j] = CONST_CAST (char *, outfiles[i]); |
| j++; |
| } |
| argv[j] = NULL; |
| |
| create_at_file (argv); |
| } |
| else |
| for (i = 0; i < max; i++) |
| if (outfiles[i]) |
| store_arg (outfiles[i], 0, 0); |
| break; |
| } |
| |
| case 'O': |
| obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); |
| arg_going = 1; |
| break; |
| |
| case 's': |
| this_is_library_file = 1; |
| break; |
| |
| case 'T': |
| this_is_linker_script = 1; |
| break; |
| |
| case 'V': |
| outfiles[input_file_number] = NULL; |
| break; |
| |
| case 'w': |
| this_is_output_file = 1; |
| break; |
| |
| case 'W': |
| { |
| unsigned int cur_index = argbuf.length (); |
| /* Handle the {...} following the %W. */ |
| if (*p != '{') |
| fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p); |
| p = handle_braces (p + 1); |
| if (p == 0) |
| return -1; |
| end_going_arg (); |
| /* If any args were output, mark the last one for deletion |
| on failure. */ |
| if (argbuf.length () != cur_index) |
| record_temp_file (argbuf.last (), 0, 1); |
| break; |
| } |
| |
| /* %x{OPTION} records OPTION for %X to output. */ |
| case 'x': |
| { |
| const char *p1 = p; |
| char *string; |
| char *opt; |
| unsigned ix; |
| |
| /* Skip past the option value and make a copy. */ |
| if (*p != '{') |
| fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p); |
| while (*p++ != '}') |
| ; |
| string = save_string (p1 + 1, p - p1 - 2); |
| |
| /* See if we already recorded this option. */ |
| FOR_EACH_VEC_ELT (linker_options, ix, opt) |
| if (! strcmp (string, opt)) |
| { |
| free (string); |
| return 0; |
| } |
| |
| /* This option is new; add it. */ |
| add_linker_option (string, strlen (string)); |
| free (string); |
| } |
| break; |
| |
| /* Dump out the options accumulated previously using %x. */ |
| case 'X': |
| do_specs_vec (linker_options); |
| break; |
| |
| /* Dump out the options accumulated previously using -Wa,. */ |
| case 'Y': |
| do_specs_vec (assembler_options); |
| break; |
| |
| /* Dump out the options accumulated previously using -Wp,. */ |
| case 'Z': |
| do_specs_vec (preprocessor_options); |
| break; |
| |
| /* Here are digits and numbers that just process |
| a certain constant string as a spec. */ |
| |
| case '1': |
| value = do_spec_1 (cc1_spec, 0, NULL); |
| if (value != 0) |
| return value; |
| break; |
| |
| case '2': |
| value = do_spec_1 (cc1plus_spec, 0, NULL); |
| if (value != 0) |
| return value; |
| break; |
| |
| case 'a': |
| value = do_spec_1 (asm_spec, 0, NULL); |
| if (value != 0) |
| return value; |
| break; |
| |
| case 'A': |
| value = do_spec_1 (asm_final_spec, 0, NULL); |
| if (value != 0) |
| return value; |
| break; |
| |
| case 'C': |
| { |
| const char *const spec |
| = (input_file_compiler->cpp_spec |
| ? input_file_compiler->cpp_spec |
| : cpp_spec); |
| value = do_spec_1 (spec, 0, NULL); |
| if (value != 0) |
| return value; |
| } |
| break; |
| |
| case 'E': |
| value = do_spec_1 (endfile_spec, 0, NULL); |
| if (value != 0) |
| return value; |
| break; |
| |
| case 'l': |
| value = do_spec_1 (link_spec, 0, NULL); |
| if (value != 0) |
| return value; |
| break; |
| |
| case 'L': |
| value = do_spec_1 (lib_spec, 0, NULL); |
| if (value != 0) |
| return value; |
| break; |
| |
| case 'M': |
| if (multilib_os_dir == NULL) |
| obstack_1grow (&obstack, '.'); |
| else |
| obstack_grow (&obstack, multilib_os_dir, |
| strlen (multilib_os_dir)); |
| break; |
| |
| case 'G': |
| value = do_spec_1 (libgcc_spec, 0, NULL); |
| if (value != 0) |
| return value; |
| break; |
| |
| case 'R': |
| /* We assume there is a directory |
| separator at the end of this string. */ |
| if (target_system_root) |
| { |
| obstack_grow (&obstack, target_system_root, |
| strlen (target_system_root)); |
| if (target_sysroot_suffix) |
| obstack_grow (&obstack, target_sysroot_suffix, |
| strlen (target_sysroot_suffix)); |
| } |
| break; |
| |
| case 'S': |
| value = do_spec_1 (startfile_spec, 0, NULL); |
| if (value != 0) |
| return value; |
| break; |
| |
| /* Here we define characters other than letters and digits. */ |
| |
| case '{': |
| p = handle_braces (p); |
| if (p == 0) |
| return -1; |
| break; |
| |
| case ':': |
| p = handle_spec_function (p, NULL); |
| if (p == 0) |
| return -1; |
| break; |
| |
| case '%': |
| obstack_1grow (&obstack, '%'); |
| break; |
| |
| case '.': |
| { |
| unsigned len = 0; |
| |
| while (p[len] && p[len] != ' ' && p[len] != '%') |
| len++; |
| suffix_subst = save_string (p - 1, len + 1); |
| p += len; |
| } |
| break; |
| |
| /* Henceforth ignore the option(s) matching the pattern |
| after the %<. */ |
| case '<': |
| case '>': |
| { |
| unsigned len = 0; |
| int have_wildcard = 0; |
| int i; |
| int switch_option; |
| |
| if (c == '>') |
| switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC; |
| else |
| switch_option = SWITCH_IGNORE; |
| |
| while (p[len] && p[len] != ' ' && p[len] != '\t') |
| len++; |
| |
| if (p[len-1] == '*') |
| have_wildcard = 1; |
| |
| for (i = 0; i < n_switches; i++) |
| if (!strncmp (switches[i].part1, p, len - have_wildcard) |
| && (have_wildcard || switches[i].part1[len] == '\0')) |
| { |
| switches[i].live_cond |= switch_option; |
| /* User switch be validated from validate_all_switches. |
| when the definition is seen from the spec file. |
| If not defined anywhere, will be rejected. */ |
| if (switches[i].known) |
| switches[i].validated = true; |
| } |
| |
| p += len; |
| } |
| break; |
| |
| case '*': |
| if (soft_matched_part) |
| { |
| if (soft_matched_part[0]) |
| do_spec_1 (soft_matched_part, 1, NULL); |
| /* Only insert a space after the substitution if it is at the |
| end of the current sequence. So if: |
| |
| "%{foo=*:bar%*}%{foo=*:one%*two}" |
| |
| matches -foo=hello then it will produce: |
| |
| barhello onehellotwo |
| */ |
| if (*p == 0 || *p == '}') |
| do_spec_1 (" ", 0, NULL); |
| } |
| else |
| /* Catch the case where a spec string contains something like |
| '%{foo:%*}'. i.e. there is no * in the pattern on the left |
| hand side of the :. */ |
| error ("spec failure: %<%%*%> has not been initialized by pattern match"); |
| break; |
| |
| /* Process a string found as the value of a spec given by name. |
| This feature allows individual machine descriptions |
| to add and use their own specs. */ |
| case '(': |
| { |
| const char *name = p; |
| struct spec_list *sl; |
| int len; |
| |
| /* The string after the S/P is the name of a spec that is to be |
| processed. */ |
| while (*p && *p != ')') |
| p++; |
| |
| /* See if it's in the list. */ |
| for (len = p - name, sl = specs; sl; sl = sl->next) |
| if (sl->name_len == len && !strncmp (sl->name, name, len)) |
| { |
| name = *(sl->ptr_spec); |
| #ifdef DEBUG_SPECS |
| fnotice (stderr, "Processing spec (%s), which is '%s'\n", |
| sl->name, name); |
| #endif |
| break; |
| } |
| |
| if (sl) |
| { |
| value = do_spec_1 (name, 0, NULL); |
| if (value != 0) |
| return value; |
| } |
| |
| /* Discard the closing paren. */ |
| if (*p) |
| p++; |
| } |
| break; |
| |
| default: |
| error ("spec failure: unrecognized spec option %qc", c); |
| break; |
| } |
| break; |
| |
| case '\\': |
| /* Backslash: treat next character as ordinary. */ |
| c = *p++; |
| |
| /* Fall through. */ |
| default: |
| /* Ordinary character: put it into the current argument. */ |
| obstack_1grow (&obstack, c); |
| arg_going = 1; |
| } |
| |
| /* End of string. If we are processing a spec function, we need to |
| end any pending argument. */ |
| if (processing_spec_function) |
| end_going_arg (); |
| |
| return 0; |
| } |
| |
| /* Look up a spec function. */ |
| |
| static const struct spec_function * |
| lookup_spec_function (const char *name) |
| { |
| const struct spec_function *sf; |
| |
| for (sf = static_spec_functions; sf->name != NULL; sf++) |
| if (strcmp (sf->name, name) == 0) |
| return sf; |
| |
| return NULL; |
| } |
| |
| /* Evaluate a spec function. */ |
| |
| static const char * |
| eval_spec_function (const char *func, const char *args) |
| { |
| const struct spec_function *sf; |
| const char *funcval; |
| |
| /* Saved spec processing context. */ |
| vec<const_char_p> save_argbuf; |
| |
| int save_arg_going; |
| int save_delete_this_arg; |
| int save_this_is_output_file; |
| int save_this_is_library_file; |
| int save_input_from_pipe; |
| int save_this_is_linker_script; |
| const char *save_suffix_subst; |
| |
| int save_growing_size; |
| void *save_growing_value = NULL; |
| |
| sf = lookup_spec_function (func); |
| if (sf == NULL) |
| fatal_error ("unknown spec function %qs", func); |
| |
| /* Push the spec processing context. */ |
| save_argbuf = argbuf; |
| |
| save_arg_going = arg_going; |
| save_delete_this_arg = delete_this_arg; |
| save_this_is_output_file = this_is_output_file; |
| save_this_is_library_file = this_is_library_file; |
| save_this_is_linker_script = this_is_linker_script; |
| save_input_from_pipe = input_from_pipe; |
| save_suffix_subst = suffix_subst; |
| |
| /* If we have some object growing now, finalize it so the args and function |
| eval proceed from a cleared context. This is needed to prevent the first |
| constructed arg from mistakenly including the growing value. We'll push |
| this value back on the obstack once the function evaluation is done, to |
| restore a consistent processing context for our caller. This is fine as |
| the address of growing objects isn't guaranteed to remain stable until |
| they are finalized, and we expect this situation to be rare enough for |
| the extra copy not to be an issue. */ |
| save_growing_size = obstack_object_size (&obstack); |
| if (save_growing_size > 0) |
| save_growing_value = obstack_finish (&obstack); |
| |
| /* Create a new spec processing context, and build the function |
| arguments. */ |
| |
| alloc_args (); |
| if (do_spec_2 (args) < 0) |
| fatal_error ("error in args to spec function %qs", func); |
| |
| /* argbuf_index is an index for the next argument to be inserted, and |
| so contains the count of the args already inserted. */ |
| |
| funcval = (*sf->func) (argbuf.length (), |
| argbuf.address ()); |
| |
| /* Pop the spec processing context. */ |
| argbuf.release (); |
| argbuf = save_argbuf; |
| |
| arg_going = save_arg_going; |
| delete_this_arg = save_delete_this_arg; |
| this_is_output_file = save_this_is_output_file; |
| this_is_library_file = save_this_is_library_file; |
| this_is_linker_script = save_this_is_linker_script; |
| input_from_pipe = save_input_from_pipe; |
| suffix_subst = save_suffix_subst; |
| |
| if (save_growing_size > 0) |
| obstack_grow (&obstack, save_growing_value, save_growing_size); |
| |
| return funcval; |
| } |
| |
| /* Handle a spec function call of the form: |
| |
| %:function(args) |
| |
| ARGS is processed as a spec in a separate context and split into an |
| argument vector in the normal fashion. The function returns a string |
| containing a spec which we then process in the caller's context, or |
| NULL if no processing is required. |
| |
| If RETVAL_NONNULL is not NULL, then store a bool whether function |
| returned non-NULL. */ |
| |
| static const char * |
| handle_spec_function (const char *p, bool *retval_nonnull) |
| { |
| char *func, *args; |
| const char *endp, *funcval; |
| int count; |
| |
| processing_spec_function++; |
| |
| /* Get the function name. */ |
| for (endp = p; *endp != '\0'; endp++) |
| { |
| if (*endp == '(') /* ) */ |
| break; |
| /* Only allow [A-Za-z0-9], -, and _ in function names. */ |
| if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_')) |
| fatal_error ("malformed spec function name"); |
| } |
| if (*endp != '(') /* ) */ |
| fatal_error ("no arguments for spec function"); |
| func = save_string (p, endp - p); |
| p = ++endp; |
| |
| /* Get the arguments. */ |
| for (count = 0; *endp != '\0'; endp++) |
| { |
| /* ( */ |
| if (*endp == ')') |
| { |
| if (count == 0) |
| break; |
| count--; |
| } |
| else if (*endp == '(') /* ) */ |
| count++; |
| } |
| /* ( */ |
| if (*endp != ')') |
| fatal_error ("malformed spec function arguments"); |
| args = save_string (p, endp - p); |
| p = ++endp; |
| |
| /* p now points to just past the end of the spec function expression. */ |
| |
| funcval = eval_spec_function (func, args); |
| if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0) |
| p = NULL; |
| if (retval_nonnull) |
| *retval_nonnull = funcval != NULL; |
| |
| free (func); |
| free (args); |
| |
| processing_spec_function--; |
| |
| return p; |
| } |
| |
| /* Inline subroutine of handle_braces. Returns true if the current |
| input suffix matches the atom bracketed by ATOM and END_ATOM. */ |
| static inline bool |
| input_suffix_matches (const char *atom, const char *end_atom) |
| { |
| return (input_suffix |
| && !strncmp (input_suffix, atom, end_atom - atom) |
| && input_suffix[end_atom - atom] == '\0'); |
| } |
| |
| /* Subroutine of handle_braces. Returns true if the current |
| input file's spec name matches the atom bracketed by ATOM and END_ATOM. */ |
| static bool |
| input_spec_matches (const char *atom, const char *end_atom) |
| { |
| return (input_file_compiler |
| && input_file_compiler->suffix |
| && input_file_compiler->suffix[0] != '\0' |
| && !strncmp (input_file_compiler->suffix + 1, atom, |
| end_atom - atom) |
| && input_file_compiler->suffix[end_atom - atom + 1] == '\0'); |
| } |
| |
| /* Subroutine of handle_braces. Returns true if a switch |
| matching the atom bracketed by ATOM and END_ATOM appeared on the |
| command line. */ |
| static bool |
| switch_matches (const char *atom, const char *end_atom, int starred) |
| { |
| int i; |
| int len = end_atom - atom; |
| int plen = starred ? len : -1; |
| |
| for (i = 0; i < n_switches; i++) |
| if (!strncmp (switches[i].part1, atom, len) |
| && (starred || switches[i].part1[len] == '\0') |
| && check_live_switch (i, plen)) |
| return true; |
| |
| /* Check if a switch with separated form matching the atom. |
| We check -D and -U switches. */ |
| else if (switches[i].args != 0) |
| { |
| if ((*switches[i].part1 == 'D' || *switches[i].part1 == 'U') |
| && *switches[i].part1 == atom[0]) |
| { |
| if (!strncmp (switches[i].args[0], &atom[1], len - 1) |
| && (starred || (switches[i].part1[1] == '\0' |
| && switches[i].args[0][len - 1] == '\0')) |
| && check_live_switch (i, (starred ? 1 : -1))) |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| /* Inline subroutine of handle_braces. Mark all of the switches which |
| match ATOM (extends to END_ATOM; STARRED indicates whether there |
| was a star after the atom) for later processing. */ |
| static inline void |
| mark_matching_switches (const char *atom, const char *end_atom, int starred) |
| { |
| int i; |
| int len = end_atom - atom; |
| int plen = starred ? len : -1; |
| |
| for (i = 0; i < n_switches; i++) |
| if (!strncmp (switches[i].part1, atom, len) |
| && (starred || switches[i].part1[len] == '\0') |
| && check_live_switch (i, plen)) |
| switches[i].ordering = 1; |
| } |
| |
| /* Inline subroutine of handle_braces. Process all the currently |
| marked switches through give_switch, and clear the marks. */ |
| static inline void |
| process_marked_switches (void) |
| { |
| int i; |
| |
| for (i = 0; i < n_switches; i++) |
| if (switches[i].ordering == 1) |
| { |
| switches[i].ordering = 0; |
| give_switch (i, 0); |
| } |
| } |
| |
| /* Handle a %{ ... } construct. P points just inside the leading {. |
| Returns a pointer one past the end of the brace block, or 0 |
| if we call do_spec_1 and that returns -1. */ |
| |
| static const char * |
| handle_braces (const char *p) |
| { |
| const char *atom, *end_atom; |
| const char *d_atom = NULL, *d_end_atom = NULL; |
| const char *orig = p; |
| |
| bool a_is_suffix; |
| bool a_is_spectype; |
| bool a_is_starred; |
| bool a_is_negated; |
| bool a_matched; |
| |
| bool a_must_be_last = false; |
| bool ordered_set = false; |
| bool disjunct_set = false; |
| bool disj_matched = false; |
| bool disj_starred = true; |
| bool n_way_choice = false; |
| bool n_way_matched = false; |
| |
| #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) |
| |
| do |
| { |
| if (a_must_be_last) |
| goto invalid; |
| |
| /* Scan one "atom" (S in the description above of %{}, possibly |
| with '!', '.', '@', ',', or '*' modifiers). */ |
| a_matched = false; |
| a_is_suffix = false; |
| a_is_starred = false; |
| a_is_negated = false; |
| a_is_spectype = false; |
| |
| SKIP_WHITE (); |
| if (*p == '!') |
| p++, a_is_negated = true; |
| |
| SKIP_WHITE (); |
| if (*p == '%' && p[1] == ':') |
| { |
| atom = NULL; |
| end_atom = NULL; |
| p = handle_spec_function (p + 2, &a_matched); |
| } |
| else |
| { |
| if (*p == '.') |
| p++, a_is_suffix = true; |
| else if (*p == ',') |
| p++, a_is_spectype = true; |
| |
| atom = p; |
| while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '=' |
| || *p == ',' || *p == '.' || *p == '@') |
| p++; |
| end_atom = p; |
| |
| if (*p == '*') |
| p++, a_is_starred = 1; |
| } |
| |
| SKIP_WHITE (); |
| switch (*p) |
| { |
| case '&': case '}': |
| /* Substitute the switch(es) indicated by the current atom. */ |
| ordered_set = true; |
| if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix |
| || a_is_spectype || atom == end_atom) |
| goto invalid; |
| |
| mark_matching_switches (atom, end_atom, a_is_starred); |
| |
| if (*p == '}') |
| process_marked_switches (); |
| break; |
| |
| case '|': case ':': |
| /* Substitute some text if the current atom appears as a switch |
| or suffix. */ |
| disjunct_set = true; |
| if (ordered_set) |
| goto invalid; |
| |
| if (atom && atom == end_atom) |
| { |
| if (!n_way_choice || disj_matched || *p == '|' |
| || a_is_negated || a_is_suffix || a_is_spectype |
| || a_is_starred) |
| goto invalid; |
| |
| /* An empty term may appear as the last choice of an |
| N-way choice set; it means "otherwise". */ |
| a_must_be_last = true; |
| disj_matched = !n_way_matched; |
| disj_starred = false; |
| } |
| else |
| { |
| if ((a_is_suffix || a_is_spectype) && a_is_starred) |
| goto invalid; |
| |
| if (!a_is_starred) |
| disj_starred = false; |
| |
| /* Don't bother testing this atom if we already have a |
| match. */ |
| if (!disj_matched && !n_way_matched) |
| { |
| if (atom == NULL) |
| /* a_matched is already set by handle_spec_function. */; |
| else if (a_is_suffix) |
| a_matched = input_suffix_matches (atom, end_atom); |
| else if (a_is_spectype) |
| a_matched = input_spec_matches (atom, end_atom); |
| else |
| a_matched = switch_matches (atom, end_atom, a_is_starred); |
| |
| if (a_matched != a_is_negated) |
| { |
| disj_matched = true; |
| d_atom = atom; |
| d_end_atom = end_atom; |
| } |
| } |
| } |
| |
| if (*p == ':') |
| { |
| /* Found the body, that is, the text to substitute if the |
| current disjunction matches. */ |
| p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred, |
| disj_matched && !n_way_matched); |
| if (p == 0) |
| return 0; |
| |
| /* If we have an N-way choice, reset state for the next |
| disjunction. */ |
| if (*p == ';') |
| { |
| n_way_choice = true; |
| n_way_matched |= disj_matched; |
| disj_matched = false; |
| disj_starred = true; |
| d_atom = d_end_atom = NULL; |
| } |
| } |
| break; |
| |
| default: |
| goto invalid; |
| } |
| } |
| while (*p++ != '}'); |
| |
| return p; |
| |
| invalid: |
| fatal_error ("braced spec %qs is invalid at %qc", orig, *p); |
| |
| #undef SKIP_WHITE |
| } |
| |
| /* Subroutine of handle_braces. Scan and process a brace substitution body |
| (X in the description of %{} syntax). P points one past the colon; |
| ATOM and END_ATOM bracket the first atom which was found to be true |
| (present) in the current disjunction; STARRED indicates whether all |
| the atoms in the current disjunction were starred (for syntax validation); |
| MATCHED indicates whether the disjunction matched or not, and therefore |
| whether or not the body is to be processed through do_spec_1 or just |
| skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1 |
| returns -1. */ |
| |
| static const char * |
| process_brace_body (const char *p, const char *atom, const char *end_atom, |
| int starred, int matched) |
| { |
| const char *body, *end_body; |
| unsigned int nesting_level; |
| bool have_subst = false; |
| |
| /* Locate the closing } or ;, honoring nested braces. |
| Trim trailing whitespace. */ |
| body = p; |
| nesting_level = 1; |
| for (;;) |
| { |
| if (*p == '{') |
| nesting_level++; |
| else if (*p == '}') |
| { |
| if (!--nesting_level) |
| break; |
| } |
| else if (*p == ';' && nesting_level == 1) |
| break; |
| else if (*p == '%' && p[1] == '*' && nesting_level == 1) |
| have_subst = true; |
| else if (*p == '\0') |
| goto invalid; |
| p++; |
| } |
| |
| end_body = p; |
| while (end_body[-1] == ' ' || end_body[-1] == '\t') |
| end_body--; |
| |
| if (have_subst && !starred) |
| goto invalid; |
| |
| if (matched) |
| { |
| /* Copy the substitution body to permanent storage and execute it. |
| If have_subst is false, this is a simple matter of running the |
| body through do_spec_1... */ |
| char *string = save_string (body, end_body - body); |
| if (!have_subst) |
| { |
| if (do_spec_1 (string, 0, NULL) < 0) |
| return 0; |
| } |
| else |
| { |
| /* ... but if have_subst is true, we have to process the |
| body once for each matching switch, with %* set to the |
| variant part of the switch. */ |
| unsigned int hard_match_len = end_atom - atom; |
| int i; |
| |
| for (i = 0; i < n_switches; i++) |
| if (!strncmp (switches[i].part1, atom, hard_match_len) |
| && check_live_switch (i, hard_match_len)) |
| { |
| if (do_spec_1 (string, 0, |
| &switches[i].part1[hard_match_len]) < 0) |
| return 0; |
| /* Pass any arguments this switch has. */ |
| give_switch (i, 1); |
| suffix_subst = NULL; |
| } |
| } |
| } |
| |
| return p; |
| |
| invalid: |
| fatal_error ("braced spec body %qs is invalid", body); |
| } |
| |
| /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch |
| on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*} |
| spec, or -1 if either exact match or %* is used. |
| |
| A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch |
| whose value does not begin with "no-" is obsoleted by the same value |
| with the "no-", similarly for a switch with the "no-" prefix. */ |
| |
| static int |
| check_live_switch (int switchnum, int prefix_length) |
| { |
| const char *name = switches[switchnum].part1; |
| int i; |
| |
| /* If we already processed this switch and determined if it was |
| live or not, return our past determination. */ |
| if (switches[switchnum].live_cond != 0) |
| return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0 |
| && (switches[switchnum].live_cond & SWITCH_FALSE) == 0 |
| && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY) |
| == 0); |
| |
| /* In the common case of {<at-most-one-letter>*}, a negating |
| switch would always match, so ignore that case. We will just |
| send the conflicting switches to the compiler phase. */ |
| if (prefix_length >= 0 && prefix_length <= 1) |
| return 1; |
| |
| /* Now search for duplicate in a manner that depends on the name. */ |
| switch (*name) |
| { |
| case 'O': |
| for (i = switchnum + 1; i < n_switches; i++) |
| if (switches[i].part1[0] == 'O') |
| { |
| switches[switchnum].validated = true; |
| switches[switchnum].live_cond = SWITCH_FALSE; |
| return 0; |
| } |
| break; |
| |
| case 'W': case 'f': case 'm': case 'g': |
| if (! strncmp (name + 1, "no-", 3)) |
| { |
| /* We have Xno-YYY, search for XYYY. */ |
| for (i = switchnum + 1; i < n_switches; i++) |
| if (switches[i].part1[0] == name[0] |
| && ! strcmp (&switches[i].part1[1], &name[4])) |
| { |
| /* --specs are validated with the validate_switches mechanism. */ |
| if (switches[switchnum].known) |
| switches[switchnum].validated = true; |
| switches[switchnum].live_cond = SWITCH_FALSE; |
| return 0; |
| } |
| } |
| else |
| { |
| /* We have XYYY, search for Xno-YYY. */ |
| for (i = switchnum + 1; i < n_switches; i++) |
| if (switches[i].part1[0] == name[0] |
| && switches[i].part1[1] == 'n' |
| && switches[i].part1[2] == 'o' |
| && switches[i].part1[3] == '-' |
| && !strcmp (&switches[i].part1[4], &name[1])) |
| { |
| /* --specs are validated with the validate_switches mechanism. */ |
| if (switches[switchnum].known) |
| switches[switchnum].validated = true; |
| switches[switchnum].live_cond = SWITCH_FALSE; |
| return 0; |
| } |
| } |
| break; |
| } |
| |
| /* Otherwise the switch is live. */ |
| switches[switchnum].live_cond |= SWITCH_LIVE; |
| return 1; |
| } |
| |
| /* Pass a switch to the current accumulating command |
| in the same form that we received it. |
| SWITCHNUM identifies the switch; it is an index into |
| the vector of switches gcc received, which is `switches'. |
| This cannot fail since it never finishes a command line. |
| |
| If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */ |
| |
| static void |
| give_switch (int switchnum, int omit_first_word) |
| { |
| if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0) |
| return; |
| |
| if (!omit_first_word) |
| { |
| do_spec_1 ("-", 0, NULL); |
| do_spec_1 (switches[switchnum].part1, 1, NULL); |
| } |
| |
| if (switches[switchnum].args != 0) |
| { |
| const char **p; |
| for (p = switches[switchnum].args; *p; p++) |
| { |
| const char *arg = *p; |
| |
| do_spec_1 (" ", 0, NULL); |
| if (suffix_subst) |
| { |
| unsigned length = strlen (arg); |
| int dot = 0; |
| |
| while (length-- && !IS_DIR_SEPARATOR (arg[length])) |
| if (arg[length] == '.') |
| { |
| (CONST_CAST (char *, arg))[length] = 0; |
| dot = 1; |
| break; |
| } |
| do_spec_1 (arg, 1, NULL); |
| if (dot) |
| (CONST_CAST (char *, arg))[length] = '.'; |
| do_spec_1 (suffix_subst, 1, NULL); |
| } |
| else |
| do_spec_1 (arg, 1, NULL); |
| } |
| } |
| |
| do_spec_1 (" ", 0, NULL); |
| switches[switchnum].validated = true; |
| } |
| |
| /* Search for a file named NAME trying various prefixes including the |
| user's -B prefix and some standard ones. |
| Return the absolute file name found. If nothing is found, return NAME. */ |
| |
| static const char * |
| find_file (const char *name) |
| { |
| char *newname = find_a_file (&startfile_prefixes, name, R_OK, true); |
| return newname ? newname : name; |
| } |
| |
| /* Determine whether a directory exists. If LINKER, return 0 for |
| certain fixed names not needed by the linker. */ |
| |
| static int |
| is_directory (const char *path1, bool linker) |
| { |
| int len1; |
| char *path; |
| char *cp; |
| struct stat st; |
| |
| /* Ensure the string ends with "/.". The resulting path will be a |
| directory even if the given path is a symbolic link. */ |
| len1 = strlen (path1); |
| path = (char *) alloca (3 + len1); |
| memcpy (path, path1, len1); |
| cp = path + len1; |
| if (!IS_DIR_SEPARATOR (cp[-1])) |
| *cp++ = DIR_SEPARATOR; |
| *cp++ = '.'; |
| *cp = '\0'; |
| |
| /* Exclude directories that the linker is known to search. */ |
| if (linker |
| && IS_DIR_SEPARATOR (path[0]) |
| && ((cp - path == 6 |
| && filename_ncmp (path + 1, "lib", 3) == 0) |
| || (cp - path == 10 |
| && filename_ncmp (path + 1, "usr", 3) == 0 |
| && IS_DIR_SEPARATOR (path[4]) |
| && filename_ncmp (path + 5, "lib", 3) == 0))) |
| return 0; |
| |
| return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode)); |
| } |
| |
| /* Set up the various global variables to indicate that we're processing |
| the input file named FILENAME. */ |
| |
| void |
| set_input (const char *filename) |
| { |
| const char *p; |
| |
| gcc_input_filename = filename; |
| input_filename_length = strlen (gcc_input_filename); |
| input_basename = lbasename (gcc_input_filename); |
| |
| /* Find a suffix starting with the last period, |
| and set basename_length to exclude that suffix. */ |
| basename_length = strlen (input_basename); |
| suffixed_basename_length = basename_length; |
| p = input_basename + basename_length; |
| while (p != input_basename && *p != '.') |
| --p; |
| if (*p == '.' && p != input_basename) |
| { |
| basename_length = p - input_basename; |
| input_suffix = p + 1; |
| } |
| else |
| input_suffix = ""; |
| |
| /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then |
| we will need to do a stat on the gcc_input_filename. The |
| INPUT_STAT_SET signals that the stat is needed. */ |
| input_stat_set = 0; |
| } |
| |
| /* On fatal signals, delete all the temporary files. */ |
| |
| static void |
| fatal_signal (int signum) |
| { |
| signal (signum, SIG_DFL); |
| delete_failure_queue (); |
| delete_temp_files (); |
| /* Get the same signal again, this time not handled, |
| so its normal effect occurs. */ |
| kill (getpid (), signum); |
| } |
| |
| /* Compare the contents of the two files named CMPFILE[0] and |
| CMPFILE[1]. Return zero if they're identical, nonzero |
| otherwise. */ |
| |
| static int |
| compare_files (char *cmpfile[]) |
| { |
| int ret = 0; |
| FILE *temp[2] = { NULL, NULL }; |
| int i; |
| |
| #if HAVE_MMAP_FILE |
| { |
| size_t length[2]; |
| void *map[2] = { NULL, NULL }; |
| |
| for (i = 0; i < 2; i++) |
| { |
| struct stat st; |
| |
| if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode)) |
| { |
| error ("%s: could not determine length of compare-debug file %s", |
| gcc_input_filename, cmpfile[i]); |
| ret = 1; |
| break; |
| } |
| |
| length[i] = st.st_size; |
| } |
| |
| if (!ret && length[0] != length[1]) |
| { |
| error ("%s: -fcompare-debug failure (length)", gcc_input_filename); |
| ret = 1; |
| } |
| |
| if (!ret) |
| for (i = 0; i < 2; i++) |
| { |
| int fd = open (cmpfile[i], O_RDONLY); |
| if (fd < 0) |
| { |
| error ("%s: could not open compare-debug file %s", |
| gcc_input_filename, cmpfile[i]); |
| ret = 1; |
| break; |
| } |
| |
| map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0); |
| close (fd); |
| |
| if (map[i] == (void *) MAP_FAILED) |
| { |
| ret = -1; |
| break; |
| } |
| } |
| |
| if (!ret) |
| { |
| if (memcmp (map[0], map[1], length[0]) != 0) |
| { |
| error ("%s: -fcompare-debug failure", gcc_input_filename); |
| ret = 1; |
| } |
| } |
| |
| for (i = 0; i < 2; i++) |
| if (map[i]) |
| munmap ((caddr_t) map[i], length[i]); |
| |
| if (ret >= 0) |
| return ret; |
| |
| ret = 0; |
| } |
| #endif |
| |
| for (i = 0; i < 2; i++) |
| { |
| temp[i] = fopen (cmpfile[i], "r"); |
| if (!temp[i]) |
| { |
| error ("%s: could not open compare-debug file %s", |
| gcc_input_filename, cmpfile[i]); |
| ret = 1; |
| break; |
| } |
| } |
| |
| if (!ret && temp[0] && temp[1]) |
| for (;;) |
| { |
| int c0, c1; |
| c0 = fgetc (temp[0]); |
| c1 = fgetc (temp[1]); |
| |
| if (c0 != c1) |
| { |
| error ("%s: -fcompare-debug failure", |
| gcc_input_filename); |
| ret = 1; |
| break; |
| } |
| |
| if (c0 == EOF) |
| break; |
| } |
| |
| for (i = 1; i >= 0; i--) |
| { |
| if (temp[i]) |
| fclose (temp[i]); |
| } |
| |
| return ret; |
| } |
| |
| /* Set func_reorder_linker_plugin_file_spec and func_reorder_linker_plugin_opt |
| here. This is the linker plugin to do global function reordering and is |
| enabled with -freorder-functions=*. */ |
| |
| static void |
| set_func_reorder_linker_plugin_spec (void) |
| { |
| int i; |
| const char *plugin_opt_none = "group=none"; |
| const char *plugin_opt_callgraph = "group=callgraph"; |
| |
| /* Find the linker plugin that does function ordering. */ |
| func_reorder_linker_plugin_file_spec = find_a_file (&exec_prefixes, |
| FRPLUGINSONAME, R_OK, false); |
| |
| if (!func_reorder_linker_plugin_file_spec) |
| fatal_error ("-freorder-functions=*, but " |
| FRPLUGINSONAME " file not found"); |
| |
| func_reorder_linker_plugin_opt = plugin_opt_none; |
| |
| /* Set linker plugin options here. Option ordering is also checked here. |
| -fno-reorder-functions or -freorder-functions should disable any |
| previous -freorder-functions=*. */ |
| for (i = 0; (int) i < n_switches; i++) |
| { |
| /* Check for match with "-freorder-functions=callgraph". */ |
| if (func_reorder_linker_plugin_opt != plugin_opt_callgraph |
| && !strcmp (switches[i].part1, "freorder-functions=callgraph")) |
| { |
| func_reorder_linker_plugin_opt = plugin_opt_callgraph; |
| continue; |
| } |
| /* Set option to none if it matches -fno-reorder-functions |
| or -freorder-functions */ |
| if (func_reorder_linker_plugin_opt != plugin_opt_none |
| && (!strcmp (switches[i].part1, "fno-reorder-functions") |
| || !strcmp (switches[i].part1, "freorder-functions"))) |
| { |
| func_reorder_linker_plugin_opt = plugin_opt_none; |
| continue; |
| } |
| } |
| } |
| |
| extern int main (int, char **); |
| |
| int |
| main (int argc, char **argv) |
| { |
| size_t i; |
| int value; |
| int linker_was_run = 0; |
| int lang_n_infiles = 0; |
| int num_linker_inputs = 0; |
| char *explicit_link_files; |
| char *specs_file; |
| char *lto_wrapper_file; |
| const char *p; |
| struct user_specs *uptr; |
| char **old_argv = argv; |
| struct cl_decoded_option *decoded_options; |
| unsigned int decoded_options_count; |
| |
| p = argv[0] + strlen (argv[0]); |
| while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1])) |
| --p; |
| progname = p; |
| |
| xmalloc_set_program_name (progname); |
| |
| expandargv (&argc, &argv); |
| |
| /* Determine if any expansions were made. */ |
| if (argv != old_argv) |
| at_file_supplied = true; |
| |
| /* Register the language-independent parameters. */ |
| global_init_params (); |
| finish_params (); |
| |
| init_options_struct (&global_options, &global_options_set); |
| |
| decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **, |
| argv), |
| CL_DRIVER, |
| &decoded_options, &decoded_options_count); |
| |
| /* Unlock the stdio streams. */ |
| unlock_std_streams (); |
| |
| gcc_init_libintl (); |
| |
| diagnostic_initialize (global_dc, 0); |
| |
| #ifdef GCC_DRIVER_HOST_INITIALIZATION |
| /* Perform host dependent initialization when needed. */ |
| GCC_DRIVER_HOST_INITIALIZATION; |
| #endif |
| |
| if (atexit (delete_temp_files) != 0) |
| fatal_error ("atexit failed"); |
| |
| if (signal (SIGINT, SIG_IGN) != SIG_IGN) |
| signal (SIGINT, fatal_signal); |
| #ifdef SIGHUP |
| if (signal (SIGHUP, SIG_IGN) != SIG_IGN) |
| signal (SIGHUP, fatal_signal); |
| #endif |
| if (signal (SIGTERM, SIG_IGN) != SIG_IGN) |
| signal (SIGTERM, fatal_signal); |
| #ifdef SIGPIPE |
| if (signal (SIGPIPE, SIG_IGN) != SIG_IGN) |
| signal (SIGPIPE, fatal_signal); |
| #endif |
| #ifdef SIGCHLD |
| /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will |
| receive the signal. A different setting is inheritable */ |
| signal (SIGCHLD, SIG_DFL); |
| #endif |
| |
| /* Parsing and gimplification sometimes need quite large stack. |
| Increase stack size limits if possible. */ |
| stack_limit_increase (64 * 1024 * 1024); |
| |
| /* Allocate the argument vector. */ |
| alloc_args (); |
| |
| obstack_init (&obstack); |
| |
| /* Build multilib_select, et. al from the separate lines that make up each |
| multilib selection. */ |
| { |
| const char *const *q = multilib_raw; |
| int need_space; |
| |
| obstack_init (&multilib_obstack); |
| while ((p = *q++) != (char *) 0) |
| obstack_grow (&multilib_obstack, p, strlen (p)); |
| |
| obstack_1grow (&multilib_obstack, 0); |
| multilib_select = XOBFINISH (&multilib_obstack, const char *); |
| |
| q = multilib_matches_raw; |
| while ((p = *q++) != (char *) 0) |
| obstack_grow (&multilib_obstack, p, strlen (p)); |
| |
| obstack_1grow (&multilib_obstack, 0); |
| multilib_matches = XOBFINISH (&multilib_obstack, const char *); |
| |
| q = multilib_exclusions_raw; |
| while ((p = *q++) != (char *) 0) |
| obstack_grow (&multilib_obstack, p, strlen (p)); |
| |
| obstack_1grow (&multilib_obstack, 0); |
| multilib_exclusions = XOBFINISH (&multilib_obstack, const char *); |
| |
| q = multilib_reuse_raw; |
| while ((p = *q++) != (char *) 0) |
| obstack_grow (&multilib_obstack, p, strlen (p)); |
| |
| obstack_1grow (&multilib_obstack, 0); |
| multilib_reuse = XOBFINISH (&multilib_obstack, const char *); |
| |
| need_space = FALSE; |
| for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++) |
| { |
| if (need_space) |
| obstack_1grow (&multilib_obstack, ' '); |
| obstack_grow (&multilib_obstack, |
| multilib_defaults_raw[i], |
| strlen (multilib_defaults_raw[i])); |
| need_space = TRUE; |
| } |
| |
| obstack_1grow (&multilib_obstack, 0); |
| multilib_defaults = XOBFINISH (&multilib_obstack, const char *); |
| } |
| |
| #ifdef INIT_ENVIRONMENT |
| /* Set up any other necessary machine specific environment variables. */ |
| xputenv (INIT_ENVIRONMENT); |
| #endif |
| |
| /* Make a table of what switches there are (switches, n_switches). |
| Make a table of specified input files (infiles, n_infiles). |
| Decode switches that are handled locally. */ |
| |
| process_command (decoded_options_count, decoded_options); |
| |
| /* Initialize the vector of specs to just the default. |
| This means one element containing 0s, as a terminator. */ |
| |
| compilers = XNEWVAR (struct compiler, sizeof default_compilers); |
| memcpy (compilers, default_compilers, sizeof default_compilers); |
| n_compilers = n_default_compilers; |
| |
| /* Read specs from a file if there is one. */ |
| |
| machine_suffix = concat (spec_machine, dir_separator_str, |
| spec_version, dir_separator_str, NULL); |
| just_machine_suffix = concat (spec_machine, dir_separator_str, NULL); |
| |
| specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true); |
| /* Read the specs file unless it is a default one. */ |
| if (specs_file != 0 && strcmp (specs_file, "specs")) |
| read_specs (specs_file, true, false); |
| else |
| init_spec (); |
| |
| /* We need to check standard_exec_prefix/just_machine_suffix/specs |
| for any override of as, ld and libraries. */ |
| specs_file = (char *) alloca (strlen (standard_exec_prefix) |
| + strlen (just_machine_suffix) + sizeof ("specs")); |
| |
| strcpy (specs_file, standard_exec_prefix); |
| strcat (specs_file, just_machine_suffix); |
| strcat (specs_file, "specs"); |
| if (access (specs_file, R_OK) == 0) |
| read_specs (specs_file, true, false); |
| |
| /* Process any configure-time defaults specified for the command line |
| options, via OPTION_DEFAULT_SPECS. */ |
| for (i = 0; i < ARRAY_SIZE (option_default_specs); i++) |
| do_option_spec (option_default_specs[i].name, |
| option_default_specs[i].spec); |
| |
| /* Process DRIVER_SELF_SPECS, adding any new options to the end |
| of the command line. */ |
| |
| for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++) |
| do_self_spec (driver_self_specs[i]); |
| |
| /* If not cross-compiling, look for executables in the standard |
| places. */ |
| if (*cross_compile == '0') |
| { |
| if (*md_exec_prefix) |
| { |
| add_prefix (&exec_prefixes, md_exec_prefix, "GCC", |
| PREFIX_PRIORITY_LAST, 0, 0); |
| } |
| } |
| |
| /* Process sysroot_suffix_spec. */ |
| if (*sysroot_suffix_spec != 0 |
| && !no_sysroot_suffix |
| && do_spec_2 (sysroot_suffix_spec) == 0) |
| { |
| if (argbuf.length () > 1) |
| error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC"); |
| else if (argbuf.length () == 1) |
| target_sysroot_suffix = xstrdup (argbuf.last ()); |
| } |
| |
| #ifdef HAVE_LD_SYSROOT |
| /* Pass the --sysroot option to the linker, if it supports that. If |
| there is a sysroot_suffix_spec, it has already been processed by |
| this point, so target_system_root really is the system root we |
| should be using. */ |
| if (target_system_root) |
| { |
| obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) ")); |
| obstack_grow0 (&obstack, link_spec, strlen (link_spec)); |
| set_spec ("link", XOBFINISH (&obstack, const char *), false); |
| } |
| #endif |
| |
| /* Process sysroot_hdrs_suffix_spec. */ |
| if (*sysroot_hdrs_suffix_spec != 0 |
| && !no_sysroot_suffix |
| && do_spec_2 (sysroot_hdrs_suffix_spec) == 0) |
| { |
| if (argbuf.length () > 1) |
| error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC"); |
| else if (argbuf.length () == 1) |
| target_sysroot_hdrs_suffix = xstrdup (argbuf.last ()); |
| } |
| |
| /* Look for startfiles in the standard places. */ |
| if (*startfile_prefix_spec != 0 |
| && do_spec_2 (startfile_prefix_spec) == 0 |
| && do_spec_1 (" ", 0, NULL) == 0) |
| { |
| const char *arg; |
| int ndx; |
| FOR_EACH_VEC_ELT (argbuf, ndx, arg) |
| add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS", |
| PREFIX_PRIORITY_LAST, 0, 1); |
| } |
| /* We should eventually get rid of all these and stick to |
| startfile_prefix_spec exclusively. */ |
| else if (*cross_compile == '0' || target_system_root) |
| { |
| if (*md_startfile_prefix) |
| add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix, |
| "GCC", PREFIX_PRIORITY_LAST, 0, 1); |
| |
| if (*md_startfile_prefix_1) |
| add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1, |
| "GCC", PREFIX_PRIORITY_LAST, 0, 1); |
| |
| /* If standard_startfile_prefix is relative, base it on |
| standard_exec_prefix. This lets us move the installed tree |
| as a unit. If GCC_EXEC_PREFIX is defined, base |
| standard_startfile_prefix on that as well. |
| |
| If the prefix is relative, only search it for native compilers; |
| otherwise we will search a directory containing host libraries. */ |
| if (IS_ABSOLUTE_PATH (standard_startfile_prefix)) |
| add_sysrooted_prefix (&startfile_prefixes, |
| standard_startfile_prefix, "BINUTILS", |
| PREFIX_PRIORITY_LAST, 0, 1); |
| else if (*cross_compile == '0') |
| { |
| add_prefix (&startfile_prefixes, |
| concat (gcc_exec_prefix |
| ? gcc_exec_prefix : standard_exec_prefix, |
| machine_suffix, |
| standard_startfile_prefix, NULL), |
| NULL, PREFIX_PRIORITY_LAST, 0, 1); |
| } |
| |
| /* Sysrooted prefixes are relocated because target_system_root is |
| also relocated by gcc_exec_prefix. */ |
| if (*standard_startfile_prefix_1) |
| add_sysrooted_prefix (&startfile_prefixes, |
| standard_startfile_prefix_1, "BINUTILS", |
| PREFIX_PRIORITY_LAST, 0, 1); |
| if (*standard_startfile_prefix_2) |
| add_sysrooted_prefix (&startfile_prefixes, |
| standard_startfile_prefix_2, "BINUTILS", |
| PREFIX_PRIORITY_LAST, 0, 1); |
| } |
| |
| /* Process any user specified specs in the order given on the command |
| line. */ |
| for (uptr = user_specs_head; uptr; uptr = uptr->next) |
| { |
| char *filename = find_a_file (&startfile_prefixes, uptr->filename, |
| R_OK, true); |
| read_specs (filename ? filename : uptr->filename, false, true); |
| } |
| |
| /* Process any user self specs. */ |
| { |
| struct spec_list *sl; |
| for (sl = specs; sl; sl = sl->next) |
| if (sl->name_len == sizeof "self_spec" - 1 |
| && !strcmp (sl->name, "self_spec")) |
| do_self_spec (*sl->ptr_spec); |
| } |
| |
| if (compare_debug) |
| { |
| enum save_temps save; |
| |
| if (!compare_debug_second) |
| { |
| n_switches_debug_check[1] = n_switches; |
| n_switches_alloc_debug_check[1] = n_switches_alloc; |
| switches_debug_check[1] = XDUPVEC (struct switchstr, switches, |
| n_switches_alloc); |
| |
| do_self_spec ("%:compare-debug-self-opt()"); |
| n_switches_debug_check[0] = n_switches; |
| n_switches_alloc_debug_check[0] = n_switches_alloc; |
| switches_debug_check[0] = switches; |
| |
| n_switches = n_switches_debug_check[1]; |
| n_switches_alloc = n_switches_alloc_debug_check[1]; |
| switches = switches_debug_check[1]; |
| } |
| |
| /* Avoid crash when computing %j in this early. */ |
| save = save_temps_flag; |
| save_temps_flag = SAVE_TEMPS_NONE; |
| |
| compare_debug = -compare_debug; |
| do_self_spec ("%:compare-debug-self-opt()"); |
| |
| save_temps_flag = save; |
| |
| if (!compare_debug_second) |
| { |
| n_switches_debug_check[1] = n_switches; |
| n_switches_alloc_debug_check[1] = n_switches_alloc; |
| switches_debug_check[1] = switches; |
| compare_debug = -compare_debug; |
| n_switches = n_switches_debug_check[0]; |
| n_switches_alloc = n_switches_debug_check[0]; |
| switches = switches_debug_check[0]; |
| } |
| } |
| |
| |
| /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */ |
| if (gcc_exec_prefix) |
| gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str, |
| spec_version, dir_separator_str, NULL); |
| |
| /* Now we have the specs. |
| Set the `valid' bits for switches that match anything in any spec. */ |
| |
| validate_all_switches (); |
| |
| /* Now that we have the switches and the specs, set |
| the subdirectory based on the options. */ |
| set_multilib_dir (); |
| |
| /* Set up to remember the pathname of gcc and any options |
| needed for collect. We use argv[0] instead of progname because |
| we need the complete pathname. */ |
| obstack_init (&collect_obstack); |
| obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1); |
| obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1); |
| xputenv (XOBFINISH (&collect_obstack, char *)); |
| |
| /* Set up to remember the pathname of the lto wrapper. */ |
| |
| if (have_c) |
| lto_wrapper_file = NULL; |
| else |
| lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper", |
| X_OK, false); |
| if (lto_wrapper_file) |
| { |
| lto_wrapper_file = convert_white_space (lto_wrapper_file); |
| lto_wrapper_spec = lto_wrapper_file; |
| obstack_init (&collect_obstack); |
| obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=", |
| sizeof ("COLLECT_LTO_WRAPPER=") - 1); |
| obstack_grow (&collect_obstack, lto_wrapper_spec, |
| strlen (lto_wrapper_spec) + 1); |
| xputenv (XOBFINISH (&collect_obstack, char *)); |
| } |
| |
| /* Reject switches that no pass was interested in. */ |
| |
| for (i = 0; (int) i < n_switches; i++) |
| if (! switches[i].validated) |
| error ("unrecognized command line option %<-%s%>", switches[i].part1); |
| |
| /* Obey some of the options. */ |
| |
| if (print_search_dirs) |
| { |
| printf (_("install: %s%s\n"), |
| gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix, |
| gcc_exec_prefix ? "" : machine_suffix); |
| printf (_("programs: %s\n"), |
| build_search_list (&exec_prefixes, "", false, false)); |
| printf (_("libraries: %s\n"), |
| build_search_list (&startfile_prefixes, "", false, true)); |
| return (0); |
| } |
| |
| if (print_file_name) |
| { |
| printf ("%s\n", find_file (print_file_name)); |
| return (0); |
| } |
| |
| if (print_prog_name) |
| { |
| if (use_ld != NULL && ! strcmp (print_prog_name, "ld")) |
| { |
| /* Append USE_LD to to the default linker. */ |
| #ifdef DEFAULT_LINKER |
| char *ld; |
| # ifdef HAVE_HOST_EXECUTABLE_SUFFIX |
| int len = (sizeof (DEFAULT_LINKER) |
| - sizeof (HOST_EXECUTABLE_SUFFIX)); |
| ld = NULL; |
| if (len > 0) |
| { |
| char *default_linker = xstrdup (DEFAULT_LINKER); |
| /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains |
| HOST_EXECUTABLE_SUFFIX. */ |
| if (! strcmp (&default_linker[len], HOST_EXECUTABLE_SUFFIX)) |
| { |
| default_linker[len] = '\0'; |
| ld = concat (default_linker, use_ld, |
| HOST_EXECUTABLE_SUFFIX, NULL); |
| } |
| } |
| if (ld == NULL) |
| # endif |
| ld = concat (DEFAULT_LINKER, use_ld, NULL); |
| if (access (ld, X_OK) == 0) |
| { |
| printf ("%s\n", ld); |
| return (0); |
| } |
| #endif |
| print_prog_name = concat (print_prog_name, use_ld, NULL); |
| } |
| char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0); |
| printf ("%s\n", (newname ? newname : print_prog_name)); |
| return (0); |
| } |
| |
| if (print_multi_lib) |
| { |
| print_multilib_info (); |
| return (0); |
| } |
| |
| if (print_multi_directory) |
| { |
| if (multilib_dir == NULL) |
| printf (".\n"); |
| else |
| printf ("%s\n", multilib_dir); |
| return (0); |
| } |
| |
| if (print_multiarch) |
| { |
| if (multiarch_dir == NULL) |
| printf ("\n"); |
| else |
| printf ("%s\n", multiarch_dir); |
| return (0); |
| } |
| |
| if (print_sysroot) |
| { |
| if (target_system_root) |
| { |
| if (target_sysroot_suffix) |
| printf ("%s%s\n", target_system_root, target_sysroot_suffix); |
| else |
| printf ("%s\n", target_system_root); |
| } |
| return (0); |
| } |
| |
| if (print_multi_os_directory) |
| { |
| if (multilib_os_dir == NULL) |
| printf (".\n"); |
| else |
| printf ("%s\n", multilib_os_dir); |
| return (0); |
| } |
| |
| if (print_sysroot_headers_suffix) |
| { |
| if (*sysroot_hdrs_suffix_spec) |
| { |
| printf("%s\n", (target_sysroot_hdrs_suffix |
| ? target_sysroot_hdrs_suffix |
| : "")); |
| return (0); |
| } |
| else |
| /* The error status indicates that only one set of fixed |
| headers should be built. */ |
| fatal_error ("not configured with sysroot headers suffix"); |
| } |
| |
| if (print_help_list) |
| { |
| display_help (); |
| |
| if (! verbose_flag) |
| { |
| printf (_("\nFor bug reporting instructions, please see:\n")); |
| printf ("%s.\n", bug_report_url); |
| |
| return (0); |
| } |
| |
| /* We do not exit here. Instead we have created a fake input file |
| called 'help-dummy' which needs to be compiled, and we pass this |
| on the various sub-processes, along with the --help switch. |
| Ensure their output appears after ours. */ |
| fputc ('\n', stdout); |
| fflush (stdout); |
| } |
| |
| if (print_version) |
| { |
| printf (_("%s %s%s\n"), progname, pkgversion_string, |
| version_string); |
| printf ("Copyright %s 2014 Free Software Foundation, Inc.\n", |
| _("(C)")); |
| fputs (_("This is free software; see the source for copying conditions. There is NO\n\ |
| warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"), |
| stdout); |
| if (! verbose_flag) |
| return 0; |
| |
| /* We do not exit here. We use the same mechanism of --help to print |
| the version of the sub-processes. */ |
| fputc ('\n', stdout); |
| fflush (stdout); |
| } |
| |
| if (verbose_flag) |
| { |
| int n; |
| const char *thrmod; |
| |
| fnotice (stderr, "Target: %s\n", spec_machine); |
| fnotice (stderr, "Configured with: %s\n", configuration_arguments); |
| |
| #ifdef THREAD_MODEL_SPEC |
| /* We could have defined THREAD_MODEL_SPEC to "%*" by default, |
| but there's no point in doing all this processing just to get |
| thread_model back. */ |
| obstack_init (&obstack); |
| do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model); |
| obstack_1grow (&obstack, '\0'); |
| thrmod = XOBFINISH (&obstack, const char *); |
| #else |
| thrmod = thread_model; |
| #endif |
| |
| fnotice (stderr, "Thread model: %s\n", thrmod); |
| |
| /* compiler_version is truncated at the first space when initialized |
| from version string, so truncate version_string at the first space |
| before comparing. */ |
| for (n = 0; version_string[n]; n++) |
| if (version_string[n] == ' ') |
| break; |
| |
| if (! strncmp (version_string, compiler_version, n) |
| && compiler_version[n] == 0) |
| fnotice (stderr, "gcc version %s %s\n", version_string, |
| pkgversion_string); |
| else |
| fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n", |
| version_string, pkgversion_string, compiler_version); |
| |
| if (n_infiles == 0) |
| return (0); |
| } |
| |
| if (n_infiles == added_libraries) |
| fatal_error ("no input files"); |
| |
| if (seen_error ()) |
| goto out; |
| |
| /* Make a place to record the compiler output file names |
| that correspond to the input files. */ |
| |
| i = n_infiles; |
| i += lang_specific_extra_outfiles; |
| outfiles = XCNEWVEC (const char *, i); |
| |
| /* Record which files were specified explicitly as link input. */ |
| |
| explicit_link_files = XCNEWVEC (char, n_infiles); |
| |
| combine_inputs = have_o || flag_wpa; |
| |
| for (i = 0; (int) i < n_infiles; i++) |
| { |
| const char *name = infiles[i].name; |
| struct compiler *compiler = lookup_compiler (name, |
| strlen (name), |
| infiles[i].language); |
| |
| if (compiler && !(compiler->combinable)) |
| combine_inputs = false; |
| |
| if (lang_n_infiles > 0 && compiler != input_file_compiler |
| && infiles[i].language && infiles[i].language[0] != '*') |
| infiles[i].incompiler = compiler; |
| else if (compiler) |
| { |
| lang_n_infiles++; |
| input_file_compiler = compiler; |
| infiles[i].incompiler = compiler; |
| } |
| else |
| { |
| /* Since there is no compiler for this input file, assume it is a |
| linker file. */ |
| explicit_link_files[i] = 1; |
| infiles[i].incompiler = NULL; |
| } |
| infiles[i].compiled = false; |
| infiles[i].preprocessed = false; |
| } |
| |
| if (!combine_inputs && have_c && have_o && lang_n_infiles > 1) |
| fatal_error ("cannot specify -o with -c, -S or -E with multiple files"); |
| |
| for (i = 0; (int) i < n_infiles; i++) |
| { |
| int this_file_error = 0; |
| |
| /* Tell do_spec what to substitute for %i. */ |
| |
| input_file_number = i; |
| set_input (infiles[i].name); |
| |
| if (infiles[i].compiled) |
| continue; |
| |
| /* Use the same thing in %o, unless cp->spec says otherwise. */ |
| |
| outfiles[i] = gcc_input_filename; |
| |
| /* Figure out which compiler from the file's suffix. */ |
| |
| input_file_compiler |
| = lookup_compiler (infiles[i].name, input_filename_length, |
| infiles[i].language); |
| |
| if (input_file_compiler) |
| { |
| /* Ok, we found an applicable compiler. Run its spec. */ |
| |
| if (input_file_compiler->spec[0] == '#') |
| { |
| error ("%s: %s compiler not installed on this system", |
| gcc_input_filename, &input_file_compiler->spec[1]); |
| this_file_error = 1; |
| } |
| else |
| { |
| if (compare_debug) |
| { |
| free (debug_check_temp_file[0]); |
| debug_check_temp_file[0] = NULL; |
| |
| free (debug_check_temp_file[1]); |
| debug_check_temp_file[1] = NULL; |
| } |
| |
| value = do_spec (input_file_compiler->spec); |
| infiles[i].compiled = true; |
| if (value < 0) |
| this_file_error = 1; |
| else if (compare_debug && debug_check_temp_file[0]) |
| { |
| if (verbose_flag) |
| inform (0, "recompiling with -fcompare-debug"); |
| |
| compare_debug = -compare_debug; |
| n_switches = n_switches_debug_check[1]; |
| n_switches_alloc = n_switches_alloc_debug_check[1]; |
| switches = switches_debug_check[1]; |
| |
| value = do_spec (input_file_compiler->spec); |
| |
| compare_debug = -compare_debug; |
| n_switches = n_switches_debug_check[0]; |
| n_switches_alloc = n_switches_alloc_debug_check[0]; |
| switches = switches_debug_check[0]; |
| |
| if (value < 0) |
| { |
| error ("during -fcompare-debug recompilation"); |
| this_file_error = 1; |
| } |
| |
| gcc_assert (debug_check_temp_file[1] |
| && filename_cmp (debug_check_temp_file[0], |
| debug_check_temp_file[1])); |
| |
| if (verbose_flag) |
| inform (0, "comparing final insns dumps"); |
| |
| if (compare_files (debug_check_temp_file)) |
| this_file_error = 1; |
| } |
| |
| if (compare_debug) |
| { |
| free (debug_check_temp_file[0]); |
| debug_check_temp_file[0] = NULL; |
| |
| free (debug_check_temp_file[1]); |
| debug_check_temp_file[1] = NULL; |
| } |
| } |
| } |
| |
| /* If this file's name does not contain a recognized suffix, |
| record it as explicit linker input. */ |
| |
| else |
| explicit_link_files[i] = 1; |
| |
| /* Clear the delete-on-failure queue, deleting the files in it |
| if this compilation failed. */ |
| |
| if (this_file_error) |
| { |
| delete_failure_queue (); |
| errorcount++; |
| } |
| /* If this compilation succeeded, don't delete those files later. */ |
| clear_failure_queue (); |
| } |
| |
| /* Reset the input file name to the first compile/object file name, for use |
| with %b in LINK_SPEC. We use the first input file that we can find |
| a compiler to compile it instead of using infiles.language since for |
| languages other than C we use aliases that we then lookup later. */ |
| if (n_infiles > 0) |
| { |
| int i; |
| |
| for (i = 0; i < n_infiles ; i++) |
| if (infiles[i].incompiler |
| || (infiles[i].language && infiles[i].language[0] != '*')) |
| { |
| set_input (infiles[i].name); |
| break; |
| } |
| } |
| |
| if (!seen_error ()) |
| { |
| /* Make sure INPUT_FILE_NUMBER points to first available open |
| slot. */ |
| input_file_number = n_infiles; |
| if (lang_specific_pre_link ()) |
| errorcount++; |
| } |
| |
| /* Determine if there are any linker input files. */ |
| num_linker_inputs = 0; |
| for (i = 0; (int) i < n_infiles; i++) |
| if (explicit_link_files[i] || outfiles[i] != NULL) |
| num_linker_inputs++; |
| |
| /* Run ld to link all the compiler output files. */ |
| |
| if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2) |
| { |
| int tmp = execution_count; |
| |
| if (! have_c) |
| { |
| #if HAVE_LTO_PLUGIN > 0 |
| #if HAVE_LTO_PLUGIN == 2 |
| const char *fno_use_linker_plugin = "fno-use-linker-plugin"; |
| #else |
| const char *fuse_linker_plugin = "fuse-linker-plugin"; |
| #endif |
| #endif |
| |
| const char *freorder_functions_ = "freorder-functions="; |
| |
| /* We'll use ld if we can't find collect2. */ |
| if (! strcmp (linker_name_spec, "collect2")) |
| { |
| char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false); |
| if (s == NULL) |
| linker_name_spec = "ld"; |
| } |
| |
| #if HAVE_LTO_PLUGIN > 0 |
| #if HAVE_LTO_PLUGIN == 2 |
| if (!switch_matches (fno_use_linker_plugin, |
| fno_use_linker_plugin |
| + strlen (fno_use_linker_plugin), 0)) |
| #else |
| if (switch_matches (fuse_linker_plugin, |
| fuse_linker_plugin |
| + strlen (fuse_linker_plugin), 0)) |
| #endif |
| { |
| char *temp_spec = find_a_file (&exec_prefixes, |
| LTOPLUGINSONAME, R_OK, |
| false); |
| if (!temp_spec) |
| fatal_error ("-fuse-linker-plugin, but %s not found", |
| LTOPLUGINSONAME); |
| linker_plugin_file_spec = convert_white_space (temp_spec); |
| } |
| #endif |
| lto_gcc_spec = argv[0]; |
| |
| /* The function reordering linker plugin will be loaded if the option |
| -freorder-functions= is present in the command-line. */ |
| if (switch_matches (freorder_functions_, |
| freorder_functions_ + strlen (freorder_functions_), 1)) |
| set_func_reorder_linker_plugin_spec (); |
| } |
| |
| /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables |
| for collect. */ |
| putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false); |
| putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true); |
| |
| if (print_subprocess_help == 1) |
| { |
| printf (_("\nLinker options\n==============\n\n")); |
| printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\"" |
| " to the linker.\n\n")); |
| fflush (stdout); |
| } |
| value = do_spec (link_command_spec); |
| if (value < 0) |
| errorcount = 1; |
| linker_was_run = (tmp != execution_count); |
| } |
| |
| /* If options said don't run linker, |
| complain about input files to be given to the linker. */ |
| |
| if (! linker_was_run && !seen_error ()) |
| for (i = 0; (int) i < n_infiles; i++) |
| if (explicit_link_files[i] |
| && !(infiles[i].language && infiles[i].language[0] == '*')) |
| warning (0, "%s: linker input file unused because linking not done", |
| outfiles[i]); |
| |
| /* Delete some or all of the temporary files we made. */ |
| |
| if (seen_error ()) |
| delete_failure_queue (); |
| delete_temp_files (); |
| |
| if (print_help_list) |
| { |
| printf (("\nFor bug reporting instructions, please see:\n")); |
| printf ("%s\n", bug_report_url); |
| } |
| |
| out: |
| return (signal_count != 0 ? 2 |
| : seen_error () ? (pass_exit_codes ? greatest_status : 1) |
| : 0); |
| } |
| |
| /* Find the proper compilation spec for the file name NAME, |
| whose length is LENGTH. LANGUAGE is the specified language, |
| or 0 if this file is to be passed to the linker. */ |
| |
| static struct compiler * |
| lookup_compiler (const char *name, size_t length, const char *language) |
| { |
| struct compiler *cp; |
| |
| /* If this was specified by the user to be a linker input, indicate that. */ |
| if (language != 0 && language[0] == '*') |
| return 0; |
| |
| /* Otherwise, look for the language, if one is spec'd. */ |
| if (language != 0) |
| { |
| for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) |
| if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language)) |
| return cp; |
| |
| error ("language %s not recognized", language); |
| return 0; |
| } |
| |
| /* Look for a suffix. */ |
| for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) |
| { |
| if (/* The suffix `-' matches only the file name `-'. */ |
| (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) |
| || (strlen (cp->suffix) < length |
| /* See if the suffix matches the end of NAME. */ |
| && !strcmp (cp->suffix, |
| name + length - strlen (cp->suffix)) |
| )) |
| break; |
| } |
| |
| #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM) |
| /* Look again, but case-insensitively this time. */ |
| if (cp < compilers) |
| for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) |
| { |
| if (/* The suffix `-' matches only the file name `-'. */ |
| (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) |
| || (strlen (cp->suffix) < length |
| /* See if the suffix matches the end of NAME. */ |
| && ((!strcmp (cp->suffix, |
| name + length - strlen (cp->suffix)) |
| || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ")) |
| && !strcasecmp (cp->suffix, |
| name + length - strlen (cp->suffix))) |
| )) |
| break; |
| } |
| #endif |
| |
| if (cp >= compilers) |
| { |
| if (cp->spec[0] != '@') |
| /* A non-alias entry: return it. */ |
| return cp; |
| |
| /* An alias entry maps a suffix to a language. |
| Search for the language; pass 0 for NAME and LENGTH |
| to avoid infinite recursion if language not found. */ |
| return lookup_compiler (NULL, 0, cp->spec + 1); |
| } |
| return 0; |
| } |
| |
| static char * |
| save_string (const char *s, int len) |
| { |
| char *result = XNEWVEC (char, len + 1); |
| |
| memcpy (result, s, len); |
| result[len] = 0; |
| return result; |
| } |
| |
| void |
| pfatal_with_name (const char *name) |
| { |
| perror_with_name (name); |
| delete_temp_files (); |
| exit (1); |
| } |
| |
| static void |
| perror_with_name (const char *name) |
| { |
| error ("%s: %m", name); |
| } |
| |
| static inline void |
| validate_switches_from_spec (const char *spec, bool user) |
| { |
| const char *p = spec; |
| char c; |
| while ((c = *p++)) |
| if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{'))) |
| /* We have a switch spec. */ |
| p = validate_switches (p + 1, user); |
| } |
| |
| static void |
| validate_all_switches (void) |
| { |
| struct compiler *comp; |
| struct spec_list *spec; |
| |
| for (comp = compilers; comp->spec; comp++) |
| validate_switches_from_spec (comp->spec, false); |
| |
| /* Look through the linked list of specs read from the specs file. */ |
| for (spec = specs; spec; spec = spec->next) |
| validate_switches_from_spec (*spec->ptr_spec, spec->user_p); |
| |
| validate_switches_from_spec (link_command_spec, false); |
| } |
| |
| /* Look at the switch-name that comes after START |
| and mark as valid all supplied switches that match it. */ |
| |
| static const char * |
| validate_switches (const char *start, bool user_spec) |
| { |
| const char *p = start; |
| const char *atom; |
| size_t len; |
| int i; |
| bool suffix = false; |
| bool starred = false; |
| |
| #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) |
| |
| next_member: |
| SKIP_WHITE (); |
| |
| if (*p == '!') |
| p++; |
| |
| SKIP_WHITE (); |
| if (*p == '.' || *p == ',') |
| suffix = true, p++; |
| |
| atom = p; |
| while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '=' |
| || *p == ',' || *p == '.' || *p == '@') |
| p++; |
| len = p - atom; |
| |
| if (*p == '*') |
| starred = true, p++; |
| |
| SKIP_WHITE (); |
| |
| if (!suffix) |
| { |
| /* Mark all matching switches as valid. */ |
| for (i = 0; i < n_switches; i++) |
| if (!strncmp (switches[i].part1, atom, len) |
| && (starred || switches[i].part1[len] == '\0') |
| && (switches[i].known || user_spec)) |
| switches[i].validated = true; |
| } |
| |
| if (*p) p++; |
| if (*p && (p[-1] == '|' || p[-1] == '&')) |
| goto next_member; |
| |
| if (*p && p[-1] == ':') |
| { |
| while (*p && *p != ';' && *p != '}') |
| { |
| if (*p == '%') |
| { |
| p++; |
| if (*p == '{' || *p == '<') |
| p = validate_switches (p+1, user_spec); |
| else if (p[0] == 'W' && p[1] == '{') |
| p = validate_switches (p+2, user_spec); |
| } |
| else |
| p++; |
| } |
| |
| if (*p) p++; |
| if (*p && p[-1] == ';') |
| goto next_member; |
| } |
| |
| return p; |
| #undef SKIP_WHITE |
| } |
| |
| struct mdswitchstr |
| { |
| const char *str; |
| int len; |
| }; |
| |
| static struct mdswitchstr *mdswitches; |
| static int n_mdswitches; |
| |
| /* Check whether a particular argument was used. The first time we |
| canonicalize the switches to keep only the ones we care about. */ |
| |
| static int |
| used_arg (const char *p, int len) |
| { |
| struct mswitchstr |
| { |
| const char *str; |
| const char *replace; |
| int len; |
| int rep_len; |
| }; |
| |
| static struct mswitchstr *mswitches; |
| static int n_mswitches; |
| int i, j; |
| |
| if (!mswitches) |
| { |
| struct mswitchstr *matches; |
| const char *q; |
| int cnt = 0; |
| |
| /* Break multilib_matches into the component strings of string |
| and replacement string. */ |
| for (q = multilib_matches; *q != '\0'; q++) |
| if (*q == ';') |
| cnt++; |
| |
| matches |
| = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt); |
| i = 0; |
| q = multilib_matches; |
| while (*q != '\0') |
| { |
| matches[i].str = q; |
| while (*q != ' ') |
| { |
| if (*q == '\0') |
| { |
| invalid_matches: |
| fatal_error ("multilib spec %qs is invalid", |
| multilib_matches); |
| } |
| q++; |
| } |
| matches[i].len = q - matches[i].str; |
| |
| matches[i].replace = ++q; |
| while (*q != ';' && *q != '\0') |
| { |
| if (*q == ' ') |
| goto invalid_matches; |
| q++; |
| } |
| matches[i].rep_len = q - matches[i].replace; |
| i++; |
| if (*q == ';') |
| q++; |
| } |
| |
| /* Now build a list of the replacement string for switches that we care |
| about. Make sure we allocate at least one entry. This prevents |
| xmalloc from calling fatal, and prevents us from re-executing this |
| block of code. */ |
| mswitches |
| = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1)); |
| for (i = 0; i < n_switches; i++) |
| if ((switches[i].live_cond & SWITCH_IGNORE) == 0) |
| { |
| int xlen = strlen (switches[i].part1); |
| for (j = 0; j < cnt; j++) |
| if (xlen == matches[j].len |
| && ! strncmp (switches[i].part1, matches[j].str, xlen)) |
| { |
| mswitches[n_mswitches].str = matches[j].replace; |
| mswitches[n_mswitches].len = matches[j].rep_len; |
| mswitches[n_mswitches].replace = (char *) 0; |
| mswitches[n_mswitches].rep_len = 0; |
| n_mswitches++; |
| break; |
| } |
| } |
| |
| /* Add MULTILIB_DEFAULTS switches too, as long as they were not present |
| on the command line nor any options mutually incompatible with |
| them. */ |
| for (i = 0; i < n_mdswitches; i++) |
| { |
| const char *r; |
| |
| for (q = multilib_options; *q != '\0'; q++) |
| { |
| while (*q == ' ') |
| q++; |
| |
| r = q; |
| while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0 |
| || strchr (" /", q[mdswitches[i].len]) == NULL) |
| { |
| while (*q != ' ' && *q != '/' && *q != '\0') |
| q++; |
| if (*q != '/') |
| break; |
| q++; |
| } |
| |
| if (*q != ' ' && *q != '\0') |
| { |
| while (*r != ' ' && *r != '\0') |
| { |
| q = r; |
| while (*q != ' ' && *q != '/' && *q != '\0') |
| q++; |
| |
| if (used_arg (r, q - r)) |
| break; |
| |
| if (*q != '/') |
| { |
| mswitches[n_mswitches].str = mdswitches[i].str; |
| mswitches[n_mswitches].len = mdswitches[i].len; |
| mswitches[n_mswitches].replace = (char *) 0; |
| mswitches[n_mswitches].rep_len = 0; |
| n_mswitches++; |
| break; |
| } |
| |
| r = q + 1; |
| } |
| break; |
| } |
| } |
| } |
| } |
| |
| for (i = 0; i < n_mswitches; i++) |
| if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len)) |
| return 1; |
| |
| return 0; |
| } |
| |
| static int |
| default_arg (const char *p, int len) |
| { |
| int i; |
| |
| for (i = 0; i < n_mdswitches; i++) |
| if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len)) |
| return 1; |
| |
| return 0; |
| } |
| |
| /* Work out the subdirectory to use based on the options. The format of |
| multilib_select is a list of elements. Each element is a subdirectory |
| name followed by a list of options followed by a semicolon. The format |
| of multilib_exclusions is the same, but without the preceding |
| directory. First gcc will check the exclusions, if none of the options |
| beginning with an exclamation point are present, and all of the other |
| options are present, then we will ignore this completely. Passing |
| that, gcc will consider each multilib_select in turn using the same |
| rules for matching the options. If a match is found, that subdirectory |
| will be used. |
| A subdirectory name is optionally followed by a colon and the corresponding |
| multiarch name. */ |
| |
| static void |
| set_multilib_dir (void) |
| { |
| const char *p; |
| unsigned int this_path_len; |
| const char *this_path, *this_arg; |
| const char *start, *end; |
| int not_arg; |
| int ok, ndfltok, first; |
| |
| n_mdswitches = 0; |
| start = multilib_defaults; |
| while (*start == ' ' || *start == '\t') |
| start++; |
| while (*start != '\0') |
| { |
| n_mdswitches++; |
| while (*start != ' ' && *start != '\t' && *start != '\0') |
| start++; |
| while (*start == ' ' || *start == '\t') |
| start++; |
| } |
| |
| if (n_mdswitches) |
| { |
| int i = 0; |
| |
| mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches); |
| for (start = multilib_defaults; *start != '\0'; start = end + 1) |
| { |
| while (*start == ' ' || *start == '\t') |
| start++; |
| |
| if (*start == '\0') |
| break; |
| |
| for (end = start + 1; |
| *end != ' ' && *end != '\t' && *end != '\0'; end++) |
| ; |
| |
| obstack_grow (&multilib_obstack, start, end - start); |
| obstack_1grow (&multilib_obstack, 0); |
| mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *); |
| mdswitches[i++].len = end - start; |
| |
| if (*end == '\0') |
| break; |
| } |
| } |
| |
| p = multilib_exclusions; |
| while (*p != '\0') |
| { |
| /* Ignore newlines. */ |
| if (*p == '\n') |
| { |
| ++p; |
| continue; |
| } |
| |
| /* Check the arguments. */ |
| ok = 1; |
| while (*p != ';') |
| { |
| if (*p == '\0') |
| { |
| invalid_exclusions: |
| fatal_error ("multilib exclusions %qs is invalid", |
| multilib_exclusions); |
| } |
| |
| if (! ok) |
| { |
| ++p; |
| continue; |
| } |
| |
| this_arg = p; |
| while (*p != ' ' && *p != ';') |
| { |
| if (*p == '\0') |
| goto invalid_exclusions; |
| ++p; |
| } |
| |
| if (*this_arg != '!') |
| not_arg = 0; |
| else |
| { |
| not_arg = 1; |
| ++this_arg; |
| } |
| |
| ok = used_arg (this_arg, p - this_arg); |
| if (not_arg) |
| ok = ! ok; |
| |
| if (*p == ' ') |
| ++p; |
| } |
| |
| if (ok) |
| return; |
| |
| ++p; |
| } |
| |
| first = 1; |
| p = multilib_select; |
| |
| /* Append multilib reuse rules if any. With those rules, we can reuse |
| one multilib for certain different options sets. */ |
| if (strlen (multilib_reuse) > 0) |
| p = concat (p, multilib_reuse, NULL); |
| |
| while (*p != '\0') |
| { |
| /* Ignore newlines. */ |
| if (*p == '\n') |
| { |
| ++p; |
| continue; |
| } |
| |
| /* Get the initial path. */ |
| this_path = p; |
| while (*p != ' ') |
| { |
| if (*p == '\0') |
| { |
| invalid_select: |
| fatal_error ("multilib select %qs %qs is invalid", |
| multilib_select, multilib_reuse); |
| } |
| ++p; |
| } |
| this_path_len = p - this_path; |
| |
| /* Check the arguments. */ |
| ok = 1; |
| ndfltok = 1; |
| ++p; |
| while (*p != ';') |
| { |
| if (*p == '\0') |
| goto invalid_select; |
| |
| if (! ok) |
| { |
| ++p; |
| continue; |
| } |
| |
| this_arg = p; |
| while (*p != ' ' && *p != ';') |
| { |
| if (*p == '\0') |
| goto invalid_select; |
| ++p; |
| } |
| |
| if (*this_arg != '!') |
| not_arg = 0; |
| else |
| { |
| not_arg = 1; |
| ++this_arg; |
| } |
| |
| /* If this is a default argument, we can just ignore it. |
| This is true even if this_arg begins with '!'. Beginning |
| with '!' does not mean that this argument is necessarily |
| inappropriate for this library: it merely means that |
| there is a more specific library which uses this |
| argument. If this argument is a default, we need not |
| consider that more specific library. */ |
| ok = used_arg (this_arg, p - this_arg); |
| if (not_arg) |
| ok = ! ok; |
| |
| if (! ok) |
| ndfltok = 0; |
| |
| if (default_arg (this_arg, p - this_arg)) |
| ok = 1; |
| |
| if (*p == ' ') |
| ++p; |
| } |
| |
| if (ok && first) |
| { |
| if (this_path_len != 1 |
| || this_path[0] != '.') |
| { |
| char *new_multilib_dir = XNEWVEC (char, this_path_len + 1); |
| char *q; |
| |
| strncpy (new_multilib_dir, this_path, this_path_len); |
| new_multilib_dir[this_path_len] = '\0'; |
| q = strchr (new_multilib_dir, ':'); |
| if (q != NULL) |
| *q = '\0'; |
| multilib_dir = new_multilib_dir; |
| } |
| first = 0; |
| } |
| |
| if (ndfltok) |
| { |
| const char *q = this_path, *end = this_path + this_path_len; |
| |
| while (q < end && *q != ':') |
| q++; |
| if (q < end) |
| { |
| const char *q2 = q + 1, *ml_end = end; |
| char *new_multilib_os_dir; |
| |
| while (q2 < end && *q2 != ':') |
| q2++; |
| if (*q2 == ':') |
| ml_end = q2; |
| new_multilib_os_dir = XNEWVEC (char, ml_end - q); |
| memcpy (new_multilib_os_dir, q + 1, ml_end - q - 1); |
| new_multilib_os_dir[ml_end - q - 1] = '\0'; |
| multilib_os_dir = *new_multilib_os_dir ? new_multilib_os_dir : "."; |
| |
| if (q2 < end && *q2 == ':') |
| { |
| char *new_multiarch_dir = XNEWVEC (char, end - q2); |
| memcpy (new_multiarch_dir, q2 + 1, end - q2 - 1); |
| new_multiarch_dir[end - q2 - 1] = '\0'; |
| multiarch_dir = new_multiarch_dir; |
| } |
| break; |
| } |
| } |
| |
| ++p; |
| } |
| |
| if (multilib_dir == NULL && multilib_os_dir != NULL |
| && strcmp (multilib_os_dir, ".") == 0) |
| { |
| free (CONST_CAST (char *, multilib_os_dir)); |
| multilib_os_dir = NULL; |
| } |
| else if (multilib_dir != NULL && multilib_os_dir == NULL) |
| multilib_os_dir = multilib_dir; |
| } |
| |
| /* Print out the multiple library subdirectory selection |
| information. This prints out a series of lines. Each line looks |
| like SUBDIRECTORY;@OPTION@OPTION, with as many options as is |
| required. Only the desired options are printed out, the negative |
| matches. The options are print without a leading dash. There are |
| no spaces to make it easy to use the information in the shell. |
| Each subdirectory is printed only once. This assumes the ordering |
| generated by the genmultilib script. Also, we leave out ones that match |
| the exclusions. */ |
| |
| static void |
| print_multilib_info (void) |
| { |
| const char *p = multilib_select; |
| const char *last_path = 0, *this_path; |
| int skip; |
| unsigned int last_path_len = 0; |
| |
| while (*p != '\0') |
| { |
| skip = 0; |
| /* Ignore newlines. */ |
| if (*p == '\n') |
| { |
| ++p; |
| continue; |
| } |
| |
| /* Get the initial path. */ |
| this_path = p; |
| while (*p != ' ') |
| { |
| if (*p == '\0') |
| { |
| invalid_select: |
| fatal_error ("multilib select %qs is invalid", multilib_select); |
| } |
| |
| ++p; |
| } |
| |
| /* When --disable-multilib was used but target defines |
| MULTILIB_OSDIRNAMES, entries starting with .: (and not starting |
| with .:: for multiarch configurations) are there just to find |
| multilib_os_dir, so skip them from output. */ |
| if (this_path[0] == '.' && this_path[1] == ':' && this_path[2] != ':') |
| skip = 1; |
| |
| /* Check for matches with the multilib_exclusions. We don't bother |
| with the '!' in either list. If any of the exclusion rules match |
| all of its options with the select rule, we skip it. */ |
| { |
| const char *e = multilib_exclusions; |
| const char *this_arg; |
| |
| while (*e != '\0') |
| { |
| int m = 1; |
| /* Ignore newlines. */ |
| if (*e == '\n') |
| { |
| ++e; |
| continue; |
| } |
| |
| /* Check the arguments. */ |
| while (*e != ';') |
| { |
| const char *q; |
| int mp = 0; |
| |
| if (*e == '\0') |
| { |
| invalid_exclusion: |
| fatal_error ("multilib exclusion %qs is invalid", |
| multilib_exclusions); |
| } |
| |
| if (! m) |
| { |
| ++e; |
| continue; |
| } |
| |
| this_arg = e; |
| |
| while (*e != ' ' && *e != ';') |
| { |
| if (*e == '\0') |
| goto invalid_exclusion; |
| ++e; |
| } |
| |
| q = p + 1; |
| while (*q != ';') |
| { |
| const char *arg; |
| int len = e - this_arg; |
| |
| if (*q == '\0') |
| goto invalid_select; |
| |
| arg = q; |
| |
| while (*q != ' ' && *q != ';') |
| { |
| if (*q == '\0') |
| goto invalid_select; |
| ++q; |
| } |
| |
| if (! strncmp (arg, this_arg, |
| (len < q - arg) ? q - arg : len) |
| || default_arg (this_arg, e - this_arg)) |
| { |
| mp = 1; |
| break; |
| } |
| |
| if (*q == ' ') |
| ++q; |
| } |
| |
| if (! mp) |
| m = 0; |
| |
| if (*e == ' ') |
| ++e; |
| } |
| |
| if (m) |
| { |
| skip = 1; |
| break; |
| } |
| |
| if (*e != '\0') |
| ++e; |
| } |
| } |
| |
| if (! skip) |
| { |
| /* If this is a duplicate, skip it. */ |
| skip = (last_path != 0 |
| && (unsigned int) (p - this_path) == last_path_len |
| && ! filename_ncmp (last_path, this_path, last_path_len)); |
| |
| last_path = this_path; |
| last_path_len = p - this_path; |
| } |
| |
| /* If this directory requires any default arguments, we can skip |
| it. We will already have printed a directory identical to |
| this one which does not require that default argument. */ |
| if (! skip) |
| { |
| const char *q; |
| |
| q = p + 1; |
| while (*q != ';') |
| { |
| const char *arg; |
| |
| if (*q == '\0') |
| goto invalid_select; |
| |
| if (*q == '!') |
| arg = NULL; |
| else |
| arg = q; |
| |
| while (*q != ' ' && *q != ';') |
| { |
| if (*q == '\0') |
| goto invalid_select; |
| ++q; |
| } |
| |
| if (arg != NULL |
| && default_arg (arg, q - arg)) |
| { |
| skip = 1; |
| break; |
| } |
| |
| if (*q == ' ') |
| ++q; |
| } |
| } |
| |
| if (! skip) |
| { |
| const char *p1; |
| |
| for (p1 = last_path; p1 < p && *p1 != ':'; p1++) |
| putchar (*p1); |
| putchar (';'); |
| } |
| |
| ++p; |
| while (*p != ';') |
| { |
| int use_arg; |
| |
| if (*p == '\0') |
| goto invalid_select; |
| |
| if (skip) |
| { |
| ++p; |
| continue; |
| } |
| |
| use_arg = *p != '!'; |
| |
| if (use_arg) |
| putchar ('@'); |
| |
| while (*p != ' ' && *p != ';') |
| { |
| if (*p == '\0') |
| goto invalid_select; |
| if (use_arg) |
| putchar (*p); |
| ++p; |
| } |
| |
| if (*p == ' ') |
| ++p; |
| } |
| |
| if (! skip) |
| { |
| /* If there are extra options, print them now. */ |
| if (multilib_extra && *multilib_extra) |
| { |
| int print_at = TRUE; |
| const char *q; |
| |
| for (q = multilib_extra; *q != '\0'; q++) |
| { |
| if (*q == ' ') |
| print_at = TRUE; |
| else |
| { |
| if (print_at) |
| putchar ('@'); |
| putchar (*q); |
| print_at = FALSE; |
| } |
| } |
| } |
| |
| putchar ('\n'); |
| } |
| |
| ++p; |
| } |
| } |
| |
| /* getenv built-in spec function. |
| |
| Returns the value of the environment variable given by its first |
| argument, concatenated with the second argument. If the |
| environment variable is not defined, a fatal error is issued. */ |
| |
| static const char * |
| getenv_spec_function (int argc, const char **argv) |
| { |
| char *value; |
| char *result; |
| char *ptr; |
| size_t len; |
| |
| if (argc != 2) |
| return NULL; |
| |
| value = getenv (argv[0]); |
| if (!value) |
| fatal_error ("environment variable %qs not defined", argv[0]); |
| |
| /* We have to escape every character of the environment variable so |
| they are not interpreted as active spec characters. A |
| particularly painful case is when we are reading a variable |
| holding a windows path complete with \ separators. */ |
| len = strlen (value) * 2 + strlen (argv[1]) + 1; |
| result = XNEWVAR (char, len); |
| for (ptr = result; *value; ptr += 2) |
| { |
| ptr[0] = '\\'; |
| ptr[1] = *value++; |
| } |
| |
| strcpy (ptr, argv[1]); |
| |
| return result; |
| } |
| |
| /* if-exists built-in spec function. |
| |
| Checks to see if the file specified by the absolute pathname in |
| ARGS exists. Returns that pathname if found. |
| |
| The usual use for this function is to check for a library file |
| (whose name has been expanded with %s). */ |
| |
| static const char * |
| if_exists_spec_function (int argc, const char **argv) |
| { |
| /* Must have only one argument. */ |
| if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK)) |
| return argv[0]; |
| |
| return NULL; |
| } |
| |
| /* if-exists-else built-in spec function. |
| |
| This is like if-exists, but takes an additional argument which |
| is returned if the first argument does not exist. */ |
| |
| static const char * |
| if_exists_else_spec_function (int argc, const char **argv) |
| { |
| /* Must have exactly two arguments. */ |
| if (argc != 2) |
| return NULL; |
| |
| if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK)) |
| return argv[0]; |
| |
| return argv[1]; |
| } |
| |
| /* sanitize built-in spec function. |
| |
| This returns non-NULL, if sanitizing address, thread or |
| any of the undefined behavior sanitizers. */ |
| |
| static const char * |
| sanitize_spec_function (int argc, const char **argv) |
| { |
| if (argc != 1) |
| return NULL; |
| |
| if (strcmp (argv[0], "address") == 0) |
| return (flag_sanitize & SANITIZE_USER_ADDRESS) ? "" : NULL; |
| if (strcmp (argv[0], "kernel-address") == 0) |
| return (flag_sanitize & SANITIZE_KERNEL_ADDRESS) ? "" : NULL; |
| if (strcmp (argv[0], "thread") == 0) |
| return (flag_sanitize & SANITIZE_THREAD) ? "" : NULL; |
| if (strcmp (argv[0], "undefined") == 0) |
| return (flag_sanitize & SANITIZE_UNDEFINED) ? "" : NULL; |
| if (strcmp (argv[0], "leak") == 0) |
| return ((flag_sanitize |
| & (SANITIZE_ADDRESS | SANITIZE_LEAK | SANITIZE_THREAD)) |
| == SANITIZE_LEAK) ? "" : NULL; |
| return NULL; |
| } |
| |
| /* replace-outfile built-in spec function. |
| |
| This looks for the first argument in the outfiles array's name and |
| replaces it with the second argument. */ |
| |
| static const char * |
| replace_outfile_spec_function (int argc, const char **argv) |
| { |
| int i; |
| /* Must have exactly two arguments. */ |
| if (argc != 2) |
| abort (); |
| |
| for (i = 0; i < n_infiles; i++) |
| { |
| if (outfiles[i] && !filename_cmp (outfiles[i], argv[0])) |
| outfiles[i] = xstrdup (argv[1]); |
| } |
| return NULL; |
| } |
| |
| /* remove-outfile built-in spec function. |
| * |
| * This looks for the first argument in the outfiles array's name and |
| * removes it. */ |
| |
| static const char * |
| remove_outfile_spec_function (int argc, const char **argv) |
| { |
| int i; |
| /* Must have exactly one argument. */ |
| if (argc != 1) |
| abort (); |
| |
| for (i = 0; i < n_infiles; i++) |
| { |
| if (outfiles[i] && !filename_cmp (outfiles[i], argv[0])) |
| outfiles[i] = NULL; |
| } |
| return NULL; |
| } |
| |
| /* Given two version numbers, compares the two numbers. |
| A version number must match the regular expression |
| ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))* |
| */ |
| static int |
| compare_version_strings (const char *v1, const char *v2) |
| { |
| int rresult; |
| regex_t r; |
| |
| if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$", |
| REG_EXTENDED | REG_NOSUB) != 0) |
| abort (); |
| rresult = regexec (&r, v1, 0, NULL, 0); |
| if (rresult == REG_NOMATCH) |
| fatal_error ("invalid version number %qs", v1); |
| else if (rresult != 0) |
| abort (); |
| rresult = regexec (&r, v2, 0, NULL, 0); |
| if (rresult == REG_NOMATCH) |
| fatal_error ("invalid version number %qs", v2); |
| else if (rresult != 0) |
| abort (); |
| |
| return strverscmp (v1, v2); |
| } |
| |
| |
| /* version_compare built-in spec function. |
| |
| This takes an argument of the following form: |
| |
| <comparison-op> <arg1> [<arg2>] <switch> <result> |
| |
| and produces "result" if the comparison evaluates to true, |
| and nothing if it doesn't. |
| |
| The supported <comparison-op> values are: |
| |
| >= true if switch is a later (or same) version than arg1 |
| !> opposite of >= |
| < true if switch is an earlier version than arg1 |
| !< opposite of < |
| >< true if switch is arg1 or later, and earlier than arg2 |
| <> true if switch is earlier than arg1 or is arg2 or later |
| |
| If the switch is not present, the condition is false unless |
| the first character of the <comparison-op> is '!'. |
| |
| For example, |
| %:version-compare(>= 10.3 mmacosx-version-min= -lmx) |
| adds -lmx if -mmacosx-version-min=10.3.9 was passed. */ |
| |
| static const char * |
| version_compare_spec_function (int argc, const char **argv) |
| { |
| int comp1, comp2; |
| size_t switch_len; |
| const char *switch_value = NULL; |
| int nargs = 1, i; |
| bool result; |
| |
| if (argc < 3) |
| fatal_error ("too few arguments to %%:version-compare"); |
| if (argv[0][0] == '\0') |
| abort (); |
| if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!') |
| nargs = 2; |
| if (argc != nargs + 3) |
| fatal_error ("too many arguments to %%:version-compare"); |
| |
| switch_len = strlen (argv[nargs + 1]); |
| for (i = 0; i < n_switches; i++) |
| if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len) |
| && check_live_switch (i, switch_len)) |
| switch_value = switches[i].part1 + switch_len; |
| |
| if (switch_value == NULL) |
| comp1 = comp2 = -1; |
| else |
| { |
| comp1 = compare_version_strings (switch_value, argv[1]); |
| if (nargs == 2) |
| comp2 = compare_version_strings (switch_value, argv[2]); |
| else |
| comp2 = -1; /* This value unused. */ |
| } |
| |
| switch (argv[0][0] << 8 | argv[0][1]) |
| { |
| case '>' << 8 | '=': |
| result = comp1 >= 0; |
| break; |
| case '!' << 8 | '<': |
| result = comp1 >= 0 || switch_value == NULL; |
| break; |
| case '<' << 8: |
| result = comp1 < 0; |
| break; |
| case '!' << 8 | '>': |
| result = comp1 < 0 || switch_value == NULL; |
| break; |
| case '>' << 8 | '<': |
| result = comp1 >= 0 && comp2 < 0; |
| break; |
| case '<' << 8 | '>': |
| result = comp1 < 0 || comp2 >= 0; |
| break; |
| |
| default: |
| fatal_error ("unknown operator %qs in %%:version-compare", argv[0]); |
| } |
| if (! result) |
| return NULL; |
| |
| return argv[nargs + 2]; |
| } |
| |
| /* %:include builtin spec function. This differs from %include in that it |
| can be nested inside a spec, and thus be conditionalized. It takes |
| one argument, the filename, and looks for it in the startfile path. |
| The result is always NULL, i.e. an empty expansion. */ |
| |
| static const char * |
| include_spec_function (int argc, const char **argv) |
| { |
| char *file; |
| |
| if (argc != 1) |
| abort (); |
| |
| file = find_a_file (&startfile_prefixes, argv[0], R_OK, true); |
| read_specs (file ? file : argv[0], false, false); |
| |
| return NULL; |
| } |
| |
| /* %:find-file spec function. This function replaces its argument by |
| the file found through find_file, that is the -print-file-name gcc |
| program option. */ |
| static const char * |
| find_file_spec_function (int argc, const char **argv) |
| { |
| const char *file; |
| |
| if (argc != 1) |
| abort (); |
| |
| file = find_file (argv[0]); |
| return file; |
| } |
| |
| |
| /* %:find-plugindir spec function. This function replaces its argument |
| by the -iplugindir=<dir> option. `dir' is found through find_file, that |
| is the -print-file-name gcc program option. */ |
| static const char * |
| find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED) |
| { |
| const char *option; |
| |
| if (argc != 0) |
| abort (); |
| |
| option = concat ("-iplugindir=", find_file ("plugin"), NULL); |
| return option; |
| } |
| |
| |
| /* %:print-asm-header spec function. Print a banner to say that the |
| following output is from the assembler. */ |
| |
| static const char * |
| print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED, |
| const char **argv ATTRIBUTE_UNUSED) |
| { |
| printf (_("Assembler options\n=================\n\n")); |
| printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n")); |
| fflush (stdout); |
| return NULL; |
| } |
| |
| /* Get a random number for -frandom-seed */ |
| |
| static unsigned HOST_WIDE_INT |
| get_random_number (void) |
| { |
| unsigned HOST_WIDE_INT ret = 0; |
| int fd; |
| |
| fd = open ("/dev/urandom", O_RDONLY); |
| if (fd >= 0) |
| { |
| read (fd, &ret, sizeof (HOST_WIDE_INT)); |
| close (fd); |
| if (ret) |
| return ret; |
| } |
| |
| /* Get some more or less random data. */ |
| #ifdef HAVE_GETTIMEOFDAY |
| { |
| struct timeval tv; |
| |
| gettimeofday (&tv, NULL); |
| ret = tv.tv_sec * 1000 + tv.tv_usec / 1000; |
| } |
| #else |
| { |
| time_t now = time (NULL); |
| |
| if (now != (time_t)-1) |
| ret = (unsigned) now; |
| } |
| #endif |
| |
| return ret ^ getpid (); |
| } |
| |
| /* %:compare-debug-dump-opt spec function. Save the last argument, |
| expected to be the last -fdump-final-insns option, or generate a |
| temporary. */ |
| |
| static const char * |
| compare_debug_dump_opt_spec_function (int arg, |
| const char **argv ATTRIBUTE_UNUSED) |
| { |
| char *ret; |
| char *name; |
| int which; |
| static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3]; |
| |
| if (arg != 0) |
| fatal_error ("too many arguments to %%:compare-debug-dump-opt"); |
| |
| do_spec_2 ("%{fdump-final-insns=*:%*}"); |
| do_spec_1 (" ", 0, NULL); |
| |
| if (argbuf.length () > 0 |
| && strcmp (argv[argbuf.length () - 1], ".")) |
| { |
| if (!compare_debug) |
| return NULL; |
| |
| name = xstrdup (argv[argbuf.length () - 1]); |
| ret = NULL; |
| } |
| else |
| { |
| const char *ext = NULL; |
| |
| if (argbuf.length () > 0) |
| { |
| do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}"); |
| ext = ".gkd"; |
| } |
| else if (!compare_debug) |
| return NULL; |
| else |
| do_spec_2 ("%g.gkd"); |
| |
| do_spec_1 (" ", 0, NULL); |
| |
| gcc_assert (argbuf.length () > 0); |
| |
| name = concat (argbuf.last (), ext, NULL); |
| |
| ret = concat ("-fdump-final-insns=", name, NULL); |
| } |
| |
| which = compare_debug < 0; |
| debug_check_temp_file[which] = name; |
| |
| if (!which) |
| { |
| unsigned HOST_WIDE_INT value = get_random_number (); |
| |
| sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value); |
| } |
| |
| if (*random_seed) |
| { |
| char *tmp = ret; |
| ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ", |
| ret, NULL); |
| free (tmp); |
| } |
| |
| if (which) |
| *random_seed = 0; |
| |
| return ret; |
| } |
| |
| static const char *debug_auxbase_opt; |
| |
| /* %:compare-debug-self-opt spec function. Expands to the options |
| that are to be passed in the second compilation of |
| compare-debug. */ |
| |
| static const char * |
| compare_debug_self_opt_spec_function (int arg, |
| const char **argv ATTRIBUTE_UNUSED) |
| { |
| if (arg != 0) |
| fatal_error ("too many arguments to %%:compare-debug-self-opt"); |
| |
| if (compare_debug >= 0) |
| return NULL; |
| |
| do_spec_2 ("%{c|S:%{o*:%*}}"); |
| do_spec_1 (" ", 0, NULL); |
| |
| if (argbuf.length () > 0) |
| debug_auxbase_opt = concat ("-auxbase-strip ", |
| argbuf.last (), |
| NULL); |
| else |
| debug_auxbase_opt = NULL; |
| |
| return concat ("\ |
| %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \ |
| %<fdump-final-insns=* -w -S -o %j \ |
| %{!fcompare-debug-second:-fcompare-debug-second} \ |
| ", compare_debug_opt, NULL); |
| } |
| |
| /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase |
| options that are to be passed in the second compilation of |
| compare-debug. It expects, as an argument, the basename of the |
| current input file name, with the .gk suffix appended to it. */ |
| |
| static const char * |
| compare_debug_auxbase_opt_spec_function (int arg, |
| const char **argv) |
| { |
| char *name; |
| int len; |
| |
| if (arg == 0) |
| fatal_error ("too few arguments to %%:compare-debug-auxbase-opt"); |
| |
| if (arg != 1) |
| fatal_error ("too many arguments to %%:compare-debug-auxbase-opt"); |
| |
| if (compare_debug >= 0) |
| return NULL; |
| |
| len = strlen (argv[0]); |
| if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0) |
| fatal_error ("argument to %%:compare-debug-auxbase-opt " |
| "does not end in .gk"); |
| |
| if (debug_auxbase_opt) |
| return debug_auxbase_opt; |
| |
| #define OPT "-auxbase " |
| |
| len -= 3; |
| name = (char*) xmalloc (sizeof (OPT) + len); |
| memcpy (name, OPT, sizeof (OPT) - 1); |
| memcpy (name + sizeof (OPT) - 1, argv[0], len); |
| name[sizeof (OPT) - 1 + len] = '\0'; |
| |
| #undef OPT |
| |
| return name; |
| } |
| |
| /* %:pass-through-libs spec function. Finds all -l options and input |
| file names in the lib spec passed to it, and makes a list of them |
| prepended with the plugin option to cause them to be passed through |
| to the final link after all the new object files have been added. */ |
| |
| const char * |
| pass_through_libs_spec_func (int argc, const char **argv) |
| { |
| char *prepended = xstrdup (" "); |
| int n; |
| /* Shlemiel the painter's algorithm. Innately horrible, but at least |
| we know that there will never be more than a handful of strings to |
| concat, and it's only once per run, so it's not worth optimising. */ |
| for (n = 0; n < argc; n++) |
| { |
| char *old = prepended; |
| /* Anything that isn't an option is a full path to an output |
| file; pass it through if it ends in '.a'. Among options, |
| pass only -l. */ |
| if (argv[n][0] == '-' && argv[n][1] == 'l') |
| { |
| const char *lopt = argv[n] + 2; |
| /* Handle both joined and non-joined -l options. If for any |
| reason there's a trailing -l with no joined or following |
| arg just discard it. */ |
| if (!*lopt && ++n >= argc) |
| break; |
| else if (!*lopt) |
| lopt = argv[n]; |
| prepended = concat (prepended, "-plugin-opt=-pass-through=-l", |
| lopt, " ", NULL); |
| } |
| else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2)) |
| { |
| prepended = concat (prepended, "-plugin-opt=-pass-through=", |
| argv[n], " ", NULL); |
| } |
| if (prepended != old) |
| free (old); |
| } |
| return prepended; |
| } |
| |
| /* %:replace-extension spec function. Replaces the extension of the |
| first argument with the second argument. */ |
| |
| const char * |
| replace_extension_spec_func (int argc, const char **argv) |
| { |
| char *name; |
| char *p; |
| char *result; |
| int i; |
| |
| if (argc != 2) |
| fatal_error ("too few arguments to %%:replace-extension"); |
| |
| name = xstrdup (argv[0]); |
| |
| for (i = strlen (name) - 1; i >= 0; i--) |
| if (IS_DIR_SEPARATOR (name[i])) |
| break; |
| |
| p = strrchr (name + i + 1, '.'); |
| if (p != NULL) |
| *p = '\0'; |
| |
| result = concat (name, argv[1], NULL); |
| |
| free (name); |
| return result; |
| } |
| |
| /* Insert backslash before spaces in ORIG (usually a file path), to |
| avoid being broken by spec parser. |
| |
| This function is needed as do_spec_1 treats white space (' ' and '\t') |
| as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so, |
| the file name should be treated as a single argument rather than being |
| broken into multiple. Solution is to insert '\\' before the space in a |
| file name. |
| |
| This function converts and only converts all occurrence of ' ' |
| to '\\' + ' ' and '\t' to '\\' + '\t'. For example: |
| "a b" -> "a\\ b" |
| "a b" -> "a\\ \\ b" |
| "a\tb" -> "a\\\tb" |
| "a\\ b" -> "a\\\\ b" |
| |
| orig: input null-terminating string that was allocated by xalloc. The |
| memory it points to might be freed in this function. Behavior undefined |
| if ORIG wasn't xalloced or was freed already at entry. |
| |
| Return: ORIG if no conversion needed. Otherwise a newly allocated string |
| that was converted from ORIG. */ |
| |
| static char * |
| convert_white_space (char *orig) |
| { |
| int len, number_of_space = 0; |
| |
| for (len = 0; orig[len]; len++) |
| if (orig[len] == ' ' || orig[len] == '\t') number_of_space++; |
| |
| if (number_of_space) |
| { |
| char *new_spec = (char *) xmalloc (len + number_of_space + 1); |
| int j, k; |
| for (j = 0, k = 0; j <= len; j++, k++) |
| { |
| if (orig[j] == ' ' || orig[j] == '\t') |
| new_spec[k++] = '\\'; |
| new_spec[k] = orig[j]; |
| } |
| free (orig); |
| return new_spec; |
| } |
| else |
| return orig; |
| } |