| Dnl Process this file with autoconf to produce a configure script. |
| AC_REVISION([$CVSid$]) |
| AC_PREREQ(2.4.2)dnl dnl Minimum Autoconf version required. |
| AC_INIT(features.h) |
| AC_CONFIG_HEADER(config.h) |
| |
| # This will get text that should go into config.make. |
| config_vars= |
| |
| # Check for a --with-gmp argument and set gmp-srcdir in config.make. |
| AC_ARG_WITH(gmp, dnl |
| --with-gmp=DIRECTORY find GMP source code in DIRECTORY (not needed), |
| [dnl |
| case "$with_gmp" in |
| yes) AC_MSG_ERROR(--with-gmp requires an argument; use --with-gmp=DIRECTORY) ;; |
| ''|no) ;; |
| *) config_vars="$config_vars |
| gmp-srcdir = $withval" ;; |
| esac |
| ]) |
| # Check for a --with-gettext argument and set gettext-srcdir in config.make. |
| AC_ARG_WITH(gettext, dnl |
| --with-gettext=DIR find GNU gettext source code in DIR (not needed), |
| [dnl |
| case "$with_gettext" in |
| yes) |
| AC_MSG_ERROR(--with-gettext requires an argument; use --with-gettext=DIR) ;; |
| ''|no) ;; |
| *) |
| config_vars="$config_vars |
| gettext-srcdir = $withval" ;; |
| esac |
| ]) |
| |
| dnl Arguments to specify presence of other packages/features. |
| AC_ARG_WITH(fp, dnl |
| --with-fp if using floating-point hardware, |
| with_fp=$withval, with_fp=yes) |
| AC_ARG_WITH(gnu-binutils, dnl |
| --with-gnu-binutils if using GNU binutils (as and ld), |
| gnu_binutils=$withval, gnu_binutils=no) |
| AC_ARG_WITH(gnu-ld, dnl |
| --with-gnu-ld if using GNU ld (in the binutils package), |
| gnu_ld=$withval, gnu_ld=no) |
| AC_ARG_WITH(gnu-as, dnl |
| --with-gnu-as if using GNU as (in the binutils package), |
| gnu_as=$withval, gnu_as=no) |
| test $gnu_binutils = yes && gnu_as=yes gnu_ld=yes |
| AC_ARG_WITH(elf, dnl |
| --with-elf if using the ELF object format, |
| elf=$withval, elf=no) |
| AC_ARG_WITH(weak-symbols, dnl |
| --with-weak-symbols if weak symbols are available in as and ld, |
| weak=$withval, weak=no) |
| |
| AC_ARG_ENABLE(libio, dnl |
| [ --enable-libio build in GNU libio instead of GNU stdio], |
| [if test $enableval = yes; then |
| stdio=libio |
| else |
| stdio=stdio |
| fi], |
| stdio=default) |
| |
| dnl Arguments to enable or disable building the shared, profiled, and |
| dnl -fomit-frame-pointer libraries. |
| AC_ARG_ENABLE(shared, dnl |
| [ --enable-shared build shared library [default=yes if GNU ld & ELF]], |
| shared=$enableval, shared=default) |
| AC_ARG_ENABLE(profile, dnl |
| [ --enable-profile build profiled library [default=yes]], |
| profile=$enableval, profile=yes) |
| AC_ARG_ENABLE(omitfp, dnl |
| [ --enable-omitfp build undebuggable optimized library [default=no]], |
| omitfp=$enableval, omitfp=no) |
| |
| AC_CANONICAL_HOST |
| # We keep the original values in `$config_*' and never modify them, so we |
| # can write them unchanged into config.make. Everything else uses |
| # $machine, $vendor, and $os, and changes them whenever convenient. |
| config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os |
| |
| # Some configurations imply other options. |
| case "$host_os" in |
| gnu* | linux* | bsd4.4* | netbsd* | freebsd*) |
| # These systems always use GNU tools. |
| gnu_ld=yes gnu_as=yes |
| esac |
| case "$host_os" in |
| gnu* | linux* | sysv4* | solaris2*) |
| # These systems always use the ELF format. |
| elf=yes |
| esac |
| |
| # Compute the list of sysdep directories for this configuration. |
| sysdep_dir=$srcdir/sysdeps |
| AC_CACHE_CHECK(sysdep dirs, libc_cv_sysdirs, [dnl |
| machine=$config_machine |
| vendor=$config_vendor |
| os=$config_os |
| |
| dnl We need to use [ and ] for other purposes for a while now. |
| changequote(,)dnl |
| # Expand the configuration machine name into a subdirectory by architecture |
| # type and particular chip. |
| case "$machine" in |
| a29k | am29000) machine=a29k ;; |
| alpha*) machine=alpha/$machine ;; |
| hppa*) machine=hppa/$machine ;; |
| i[345]86) machine=i386/$machine ;; |
| m680?0) machine=m68k/$machine ;; |
| m68k) machine=m68k/m68020 ;; |
| m88???) machine=m88k/$machine ;; |
| m88k) machine=m88k/m88100 ;; |
| mips*) machine=mips/$machine ;; |
| mips64*) machine=mips/mips64/$machine ;; |
| sparc[6789]) machine=sparc/$machine ;; |
| supersparc) machine=sparc/sparc8 ;; |
| esac |
| |
| # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1. |
| os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`" |
| |
| case "$os" in |
| gnu*) |
| base_os=mach/hurd ;; |
| netbsd* | 386bsd* | freebsd* | bsdi*) |
| base_os=unix/bsd/bsd4.4 ;; |
| osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*) |
| base_os=unix/bsd ;; |
| sysv* | isc* | esix* | sco* | minix* | irix4* | linux*) |
| base_os=unix/sysv ;; |
| solaris[2-9]*) |
| base_os=unix/sysv/sysv4 ;; |
| none) |
| base_os=standalone ;; |
| *) |
| base_os='' ;; |
| esac |
| |
| # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. |
| tail=$os |
| ostry=$os |
| while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do |
| ostry="$ostry /$o" |
| tail=$o |
| done |
| o=`echo $tail | sed 's/[0-9]*$//'` |
| if test $o != $tail; then |
| ostry="$ostry /$o" |
| fi |
| |
| # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix. |
| base= |
| tail=$base_os |
| while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do |
| set $b |
| base="$base /$1" |
| tail="$2" |
| done |
| |
| # For sparc/sparc9, try sparc/sparc9 and then sparc. |
| mach= |
| tail=$machine |
| while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do |
| set $m |
| # Prepend the machine's FPU directory unless --without-fp. |
| if test "$with_fp" = yes; then |
| mach="$mach /$1/fpu" |
| fi |
| mach="$mach /$1" |
| tail="$2" |
| done |
| |
| dnl We are done with glob and regexp uses of [ and ]; return to autoconf. |
| changequote([,])dnl |
| |
| # Find what sysdep directories exist. |
| sysnames= |
| for b in $base ''; do |
| for m0 in $mach ''; do |
| for v in /$vendor ''; do |
| for o in /$ostry ''; do |
| for m in $mach ''; do |
| try="$m0$b$v$o$m" |
| test -n "$enable_debug_configure" && echo "$0 [DEBUG]: try $try" >&2 |
| if test -d $sysdep_dir$try; then |
| sysnames="$sysnames $try" |
| { test -n "$o" || test -n "$b"; } && os_used=t |
| { test -n "$m" || test -n "$m0"; } && machine_used=t |
| fi |
| done |
| done |
| done |
| done |
| done |
| |
| if test -z "$os_used" && test "$os" != none; then |
| AC_MSG_ERROR(Operating system $os is not supported.) |
| fi |
| if test -z "$machine_used" && test "$machine" != none; then |
| AC_MSG_ERROR(The $machine is not supported.) |
| fi |
| |
| # We have now validated the configuration. |
| |
| |
| # If using ELF, look for an `elf' subdirectory of each machine directory. |
| # We prepend these rather than inserting them whereever the machine appears |
| # because things specified by the machine's ELF ABI should override |
| # OS-specific things, and should always be the same for any OS on the |
| # machine (otherwise what's the point of an ABI?). |
| if test "$elf" = yes; then |
| elf_dirs= |
| for m in $mach; do |
| if test -d $sysdep_dir$m/elf; then |
| elf_dirs="$elf_dirs $m/elf" |
| fi |
| done |
| sysnames="`echo $elf_dirs | sed -e 's,^/,,' -e 's, /,,g'` $sysnames" |
| fi |
| |
| |
| # Remove the leading slashes. |
| sysnames="`echo $sysnames | sed -e 's@^/@@' -e 's@ /@ @g'`" |
| |
| |
| # Expand the list of system names into a full list of directories |
| # from each element's parent name and Implies file (if present). |
| set $sysnames |
| while test $# -gt 0; do |
| name=$1 |
| shift |
| |
| if test -f $sysdep_dir/$name/Implies; then |
| # Collect more names from the `Implies' file (removing comments). |
| implied="`sed 's/#.*$//' < $sysdep_dir/$name/Implies`" |
| for x in $implied; do |
| test -d $sysdep_dir/$x || echo "Warning: $name implies nonexistent $x">&2 |
| done |
| else |
| implied= |
| fi |
| |
| # Add NAME to the list of names. |
| names="$names $name" |
| |
| # Find the parent of NAME, using the empty string if it has none. |
| changequote(,)dnl |
| parent="`echo $name | sed -n -e '/\//!q' -e 's=/[^/]*$==p'`" |
| changequote([,])dnl |
| |
| # Add the names implied by NAME, and NAME's parent (if it has one), to |
| # the list of names to be processed (the argument list). We prepend the |
| # implied names to the list and append the parent. We want implied |
| # directories to come before further directories inferred from the |
| # configuration components; this ensures that for sysv4, unix/common |
| # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*) |
| # after sysv4). |
| sysnames="`echo $implied $* $parent`" |
| test -n "$sysnames" && set $sysnames |
| done |
| |
| # Add the default directories. |
| names="$names generic stub" |
| |
| # Now uniquize the list. |
| seen= |
| sysnames= |
| for name in $names; do |
| if echo "$seen" | fgrep -x $name >/dev/null; then |
| # Already in the list. |
| true; |
| else |
| # A new one. |
| if test -z "$seen"; then |
| seen="$name" sysnames="$name" |
| else |
| seen="$seen |
| $name" |
| sysnames="$sysnames $name" |
| fi |
| fi |
| done |
| libc_cv_sysdirs="$sysnames"]) |
| AC_SUBST(sysnames) sysnames="$libc_cv_sysdirs" |
| |
| AC_PROG_INSTALL |
| if test "$INSTALL" = "${srcdir}/install-sh"; then |
| # The makefiles need to use a different form to find it in $srcdir. |
| INSTALL='$(..)./install-sh' |
| fi |
| |
| AC_CHECK_TOOL(CC, gcc) |
| AC_CHECK_TOOL(AR, ar) |
| AC_CHECK_TOOL(RANLIB, ranlib, :) |
| AC_PROG_CPP |
| |
| AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl |
| echo '#include <stddef.h> |
| FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c |
| if eval "$ac_cpp conftest.c 2>/dev/null" \ |
| | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then |
| libc_cv_signed_size_t=no |
| else |
| libc_cv_signed_size_t=yes |
| fi |
| rm -f conftest*]) |
| if test $libc_cv_signed_size_t = yes; then |
| dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings. |
| cat >> confdefs.h <<\EOF |
| #undef __SIZE_TYPE__ |
| #define __SIZE_TYPE__ unsigned |
| EOF |
| fi |
| |
| AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl |
| AC_TRY_COMPILE(dnl |
| [#define __need_size_t |
| #define __need_wchar_t |
| #include <stddef.h> |
| #define __need_NULL |
| #include <stddef.h>], [size_t size; wchar_t wchar; |
| #ifdef offsetof |
| #error stddef.h ignored __need_* |
| #endif |
| if (&size == NULL || &wchar == NULL) abort ();], |
| libc_cv_friendly_stddef=yes, |
| libc_cv_friendly_stddef=no)]) |
| if test $libc_cv_friendly_stddef = yes; then |
| config_vars="$config_vars |
| override stddef.h = # The installed <stddef.h> seems to be libc-friendly." |
| fi |
| |
| AC_CACHE_CHECK(whether we need to use -P to assemble .S files, |
| libc_cv_need_minus_P, [dnl |
| cat > conftest.S <<EOF |
| #include "confdefs.h" |
| /* Nothing whatsoever. */ |
| EOF |
| if ${CC-cc} $CFLAGS -c conftest.S 2>/dev/null; then |
| libc_cv_need_minus_P=no |
| else |
| libc_cv_need_minus_P=yes |
| fi |
| rm -f conftest*]) |
| if test $libc_cv_need_minus_P = yes; then |
| config_vars="$config_vars |
| asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives." |
| fi |
| |
| AC_CACHE_CHECK(for assembler global-symbol directive, |
| libc_cv_asm_global_directive, [dnl |
| libc_cv_asm_global_directive=UNKNOWN |
| for ac_globl in .globl .global; do |
| cat > conftest.s <<EOF |
| .text |
| ${ac_globl} foo |
| foo: .long 0 |
| EOF |
| if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then |
| libc_cv_asm_global_directive=${ac_globl} |
| fi |
| rm -f conftest* |
| test $libc_cv_asm_global_directive != UNKNOWN && break |
| done]) |
| if test $libc_cv_asm_global_directive = UNKNOWN; then |
| AC_MSG_ERROR(cannot determine asm global directive) |
| else |
| AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive}) |
| fi |
| |
| AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl |
| cat > conftest.s <<EOF |
| .text |
| foo: .long 0 |
| .set glibc_conftest_frobozz,foo |
| $libc_cv_asm_global_directive glibc_conftest_frobozz |
| EOF |
| # The alpha-dec-osf1 assembler gives only a warning for `.set' |
| # (but it doesn't work), so we must do a linking check to be sure. |
| cat > conftest1.c <<\EOF |
| extern int glibc_conftest_frobozz; |
| main () { printf ("%d\n", glibc_conftest_frobozz); } |
| EOF |
| if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ |
| -o conftest conftest.s conftest1.c 1>&AC_FD_CC 2>&AC_FD_CC; then |
| libc_cv_asm_set_directive=yes |
| else |
| libc_cv_asm_set_directive=no |
| fi |
| rm -f conftest*]) |
| if test $libc_cv_asm_set_directive = yes; then |
| AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) |
| fi |
| |
| if test $elf != yes; then |
| AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini, |
| [AC_TRY_COMPILE(, [asm (".section .init"); |
| asm (".section .fini");], |
| libc_cv_have_initfini=yes, |
| libc_cv_have_initfini=no)]) |
| AC_SUBST(libc_cv_have_initfini)dnl |
| if test $libc_cv_have_initfini = yes; then |
| AC_DEFINE(HAVE_INITFINI) |
| fi |
| fi |
| |
| # sysdeps configure fragments may set these with files to be linked below. |
| libc_link_dests= |
| libc_link_sources= |
| |
| # Iterate over all the sysdep directories we will use, running their |
| # configure fragments, and looking for a uname implementation. |
| uname= |
| for dir in $sysnames; do |
| if test -r $sysdep_dir/$dir/configure; then |
| AC_MSG_RESULT(running configure fragment for $dir) |
| . $sysdep_dir/$dir/configure |
| fi |
| if test -z "$uname"; then |
| { test -r $sysdep_dir/$dir/uname.c || test -r $sysdep_dir/$dir/uname.S; } \ |
| && uname=$dir |
| fi |
| done |
| |
| AC_LINK_FILES(`echo $libc_link_sources`, `echo $libc_link_dests`) |
| |
| # If we will use the generic uname implementation, we must figure out what |
| # it will say by examining the system, and write the results in config-name.h. |
| if test "$uname" = generic; then |
| |
| changequote(,)dnl |
| uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'` |
| changequote([,])dnl |
| if test $uname_sysname != $config_os; then |
| config_release=`echo $config_os | sed s/$uname_sysname//` |
| fi |
| dnl |
| AC_DEFUN(LIBC_KERNEL_ID, [dnl |
| if test -r /vmunix; then |
| kernel_id=`strings /vmunix | grep UNIX` |
| elif test -r /dynix; then |
| kernel_id=`strings /dynix | grep DYNIX` |
| else |
| kernel_id= |
| fi |
| ])dnl |
| |
| AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl |
| AC_REQUIRE([LIBC_KERNEL_ID])dnl |
| changequote(,)dnl |
| kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'` |
| changequote([,])dnl |
| if test x`echo "$config_release" | sed "s/^$kernel_release//"` \ |
| != x$config_release; then |
| # The configuration release is a substring of the kernel release. |
| libc_cv_uname_release=$kernel_release |
| elif test x$config_release != x; then |
| libc_cv_uname_release=$config_release |
| elif test x$kernel_release != x; then |
| libc_cv_uname_release=$kernel_release |
| else |
| libc_cv_uname_release=unknown |
| fi]) |
| uname_release="$libc_cv_uname_release" |
| |
| AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl |
| AC_REQUIRE([LIBC_KERNEL_ID])dnl |
| changequote(,)dnl |
| kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'` |
| changequote([,])dnl |
| if test -n "$kernel_version"; then |
| libc_cv_uname_version="$kernel_version" |
| else |
| libc_cv_uname_version=unknown |
| fi]) |
| uname_version="$libc_cv_uname_version" |
| |
| AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl |
| config_uname=config-name.h:config-name.in |
| else |
| # For non-generic uname, we don't need to create config-name.h at all. |
| config_uname= |
| fi |
| |
| AC_MSG_CHECKING(stdio selection) |
| AC_SUBST(stdio) |
| case $stdio in |
| libio) AC_DEFINE(USE_IN_LIBIO) ;; |
| default) stdio=stdio ;; |
| esac |
| AC_MSG_RESULT($stdio) |
| |
| AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf) AC_SUBST(weak) |
| if test $gnu_ld = yes; then |
| AC_DEFINE(HAVE_GNU_LD) |
| fi |
| if test $gnu_as = yes; then |
| AC_DEFINE(HAVE_GNU_AS) |
| fi |
| if test $elf = yes; then |
| AC_DEFINE(HAVE_ELF) |
| fi |
| if test $weak = yes; then |
| AC_DEFINE(HAVE_WEAK_SYMBOLS) |
| fi |
| |
| AC_SUBST(shared) |
| if test $shared = default; then |
| if test $gnu_ld = yes; then |
| shared=$elf |
| fi |
| fi |
| AC_SUBST(profile) |
| AC_SUBST(omitfp) |
| |
| if test "`(cd $srcdir; pwd)`" = "`pwd`"; then |
| config_makefile= |
| else |
| config_makefile=Makefile |
| fi |
| |
| AC_OUTPUT(config.make ${config_makefile} ${config_uname}, , |
| [echo '$config_vars' >> config.make]) |