blob: c86d874e0d5f8f4f08bcd75910f4038d69dc6053 [file] [log] [blame]
# configure.ac for GCC
# Process this file with autoconf to generate a configuration script.
# Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
# 2007, 2008 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/>.
# --------------------------------
# Initialization and sanity checks
# --------------------------------
AC_PREREQ(2.59)
AC_INIT
AC_CONFIG_SRCDIR(tree.c)
AC_CONFIG_HEADER(auto-host.h:config.in)
gcc_version=`cat $srcdir/BASE-VER`
# Determine the host, build, and target systems
AC_CANONICAL_BUILD
AC_CANONICAL_HOST
AC_CANONICAL_TARGET
# Determine the noncanonical target name, for directory use.
ACX_NONCANONICAL_TARGET
# Determine the target- and build-specific subdirectories
GCC_TOPLEV_SUBDIRS
# Set program_transform_name
AC_ARG_PROGRAM
# Check for bogus environment variables.
# Test if LIBRARY_PATH contains the notation for the current directory
# since this would lead to problems installing/building glibc.
# LIBRARY_PATH contains the current directory if one of the following
# is true:
# - one of the terminals (":" and ";") is the first or last sign
# - two terminals occur directly after each other
# - the path contains an element with a dot in it
AC_MSG_CHECKING(LIBRARY_PATH variable)
changequote(,)dnl
case ${LIBRARY_PATH} in
[:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
library_path_setting="contains current directory"
;;
*)
library_path_setting="ok"
;;
esac
changequote([,])dnl
AC_MSG_RESULT($library_path_setting)
if test "$library_path_setting" != "ok"; then
AC_MSG_ERROR([
*** LIBRARY_PATH shouldn't contain the current directory when
*** building gcc. Please change the environment variable
*** and run configure again.])
fi
# Test if GCC_EXEC_PREFIX contains the notation for the current directory
# since this would lead to problems installing/building glibc.
# GCC_EXEC_PREFIX contains the current directory if one of the following
# is true:
# - one of the terminals (":" and ";") is the first or last sign
# - two terminals occur directly after each other
# - the path contains an element with a dot in it
AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
changequote(,)dnl
case ${GCC_EXEC_PREFIX} in
[:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
gcc_exec_prefix_setting="contains current directory"
;;
*)
gcc_exec_prefix_setting="ok"
;;
esac
changequote([,])dnl
AC_MSG_RESULT($gcc_exec_prefix_setting)
if test "$gcc_exec_prefix_setting" != "ok"; then
AC_MSG_ERROR([
*** GCC_EXEC_PREFIX shouldn't contain the current directory when
*** building gcc. Please change the environment variable
*** and run configure again.])
fi
# -----------
# Directories
# -----------
# Specify the local prefix
local_prefix=
AC_ARG_WITH(local-prefix,
[ --with-local-prefix=DIR specifies directory to put local include],
[case "${withval}" in
yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
no) ;;
*) local_prefix=$with_local_prefix ;;
esac])
# Default local prefix if it is empty
if test x$local_prefix = x; then
local_prefix=/usr/local
fi
# Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
# passed in by the toplevel make and thus we'd get different behavior
# depending on where we built the sources.
gcc_gxx_include_dir=
# Specify the g++ header file directory
AC_ARG_WITH(gxx-include-dir,
[ --with-gxx-include-dir=DIR
specifies directory to put g++ header files],
[case "${withval}" in
yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
no) ;;
*) gcc_gxx_include_dir=$with_gxx_include_dir ;;
esac])
# This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
if test x${gcc_gxx_include_dir} = x; then
if test x${enable_version_specific_runtime_libs} = xyes; then
gcc_gxx_include_dir='${libsubdir}/include/c++'
else
libstdcxx_incdir='include/c++/$(version)'
if test x$host != x$target; then
libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
fi
gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
fi
fi
AC_ARG_WITH(cpp_install_dir,
[ --with-cpp-install-dir=DIR
install the user visible C preprocessor in DIR
(relative to PREFIX) as well as PREFIX/bin],
[if test x$withval = xyes; then
AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
elif test x$withval != xno; then
cpp_install_dir=$withval
fi])
# We would like to our source tree to be readonly. However when releases or
# pre-releases are generated, the flex/bison generated files as well as the
# various formats of manuals need to be included along with the rest of the
# sources. Therefore we have --enable-generated-files-in-srcdir to do
# just that.
AC_MSG_CHECKING([whether to place generated files in the source directory])
dnl generated-files-in-srcdir is disabled by default
AC_ARG_ENABLE(generated-files-in-srcdir,
[ --enable-generated-files-in-srcdir
put copies of generated files in source dir
intended for creating source tarballs for users
without texinfo bison or flex.],
generated_files_in_srcdir=$enableval,
generated_files_in_srcdir=no)
AC_MSG_RESULT($generated_files_in_srcdir)
if test "$generated_files_in_srcdir" = "yes"; then
GENINSRC=''
else
GENINSRC='#'
fi
AC_SUBST(GENINSRC)
# -------------------
# Find default linker
# -------------------
# With GNU ld
AC_ARG_WITH(gnu-ld,
[ --with-gnu-ld arrange to work with GNU ld.],
gnu_ld_flag="$with_gnu_ld",
gnu_ld_flag=no)
# With pre-defined ld
AC_ARG_WITH(ld,
[ --with-ld arrange to use the specified ld (full pathname)],
DEFAULT_LINKER="$with_ld")
if test x"${DEFAULT_LINKER+set}" = x"set"; then
if test ! -x "$DEFAULT_LINKER"; then
AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
gnu_ld_flag=yes
fi
AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
[Define to enable the use of a default linker.])
fi
gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
AC_MSG_CHECKING([whether a default linker was specified])
if test x"${DEFAULT_LINKER+set}" = x"set"; then
if test x"$gnu_ld_flag" = x"no"; then
AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
else
AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
fi
else
AC_MSG_RESULT(no)
fi
# With demangler in GNU ld
AC_ARG_WITH(demangler-in-ld,
[ --with-demangler-in-ld try to use demangler in GNU ld.],
demangler_in_ld="$with_demangler_in_ld",
demangler_in_ld=no)
# ----------------------
# Find default assembler
# ----------------------
# With GNU as
AC_ARG_WITH(gnu-as,
[ --with-gnu-as arrange to work with GNU as],
gas_flag="$with_gnu_as",
gas_flag=no)
AC_ARG_WITH(as,
[ --with-as arrange to use the specified as (full pathname)],
DEFAULT_ASSEMBLER="$with_as")
if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
if test ! -x "$DEFAULT_ASSEMBLER"; then
AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
gas_flag=yes
fi
AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
[Define to enable the use of a default assembler.])
fi
gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
AC_MSG_CHECKING([whether a default assembler was specified])
if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
if test x"$gas_flag" = x"no"; then
AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
else
AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
fi
else
AC_MSG_RESULT(no)
fi
# ---------------
# Find C compiler
# ---------------
# If a non-executable a.out is present (e.g. created by GNU as above even if
# invoked with -v only), the IRIX 6 native ld just overwrites the existing
# file, even when creating an executable, so an execution test fails.
# Remove possible default executable files to avoid this.
#
# FIXME: This really belongs into AC_PROG_CC and can be removed once
# Autoconf includes it.
rm -f a.out a.exe b.out
# Find the native compiler
AC_PROG_CC
AM_PROG_CC_C_O
ACX_PROG_GNAT([-I"$srcdir"/ada])
# autoconf is lame and doesn't give us any substitution variable for this.
if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
NO_MINUS_C_MINUS_O=yes
else
OUTPUT_OPTION='-o $@'
fi
AC_SUBST(NO_MINUS_C_MINUS_O)
AC_SUBST(OUTPUT_OPTION)
# Remove the -O2: for historical reasons, unless bootstrapping we prefer
# optimizations to be activated explicitly by the toplevel.
case "$CC" in
*/prev-gcc/xgcc*) ;;
*) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
esac
AC_SUBST(CFLAGS)
# -------------------------
# Check C compiler features
# -------------------------
AC_USE_SYSTEM_EXTENSIONS
AC_PROG_CPP
AC_C_INLINE
# sizeof(char) is 1 by definition.
AC_CHECK_SIZEOF(void *)
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
# ---------------------
# Warnings and checking
# ---------------------
# Check $CC warning features (if it's GCC).
# We want to use -pedantic, but we don't want warnings about
# * 'long long'
# * variadic macros
# * overlong strings
# So, we only use -pedantic if we can disable those warnings.
ACX_PROG_CC_WARNING_OPTS(
m4_quote(m4_do([-W -Wall -Wwrite-strings -Wstrict-prototypes ],
[-Wmissing-prototypes -Wcast-qual])), [loose_warn])
ACX_PROG_CC_WARNING_OPTS(
m4_quote(m4_do([-Wold-style-definition -Wc++-compat ],
[-Wmissing-format-attribute])), [strict_warn])
ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
[-Wno-overlength-strings])), [strict_warn])
ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
# The above macros do nothing if the compiler is not GCC. However, the
# Makefile has more goo to add other flags, so this variabl is used to
# enables warnings only for GCC.
warn_cflags=
if test "x$GCC" = "xyes"; then
warn_cflags='$(GCC_WARN_CFLAGS)'
fi
AC_SUBST(warn_cflags)
# Enable expensive internal checks
is_release=
if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
is_release=yes
fi
AC_ARG_ENABLE(checking,
[ --enable-checking[=LIST]
enable expensive run-time checks. With LIST,
enable only specific categories of checks.
Categories are: yes,no,all,none,release.
Flags are: assert,df,fold,gc,gcac,gimple,misc,
rtlflag,rtl,runtime,tree,valgrind,types.],
[ac_checking_flags="${enableval}"],[
# Determine the default checks.
if test x$is_release = x ; then
ac_checking_flags=yes
else
ac_checking_flags=release
fi])
IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
for check in release $ac_checking_flags
do
case $check in
# these set all the flags to specific states
yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
ac_fold_checking= ; ac_gc_checking=1 ;
ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
ac_tree_checking=1 ; ac_valgrind_checking= ;
ac_types_checking=1 ;;
no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
ac_fold_checking= ; ac_gc_checking= ;
ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
ac_rtlflag_checking= ; ac_runtime_checking= ;
ac_tree_checking= ; ac_valgrind_checking= ;
ac_types_checking= ;;
all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
ac_fold_checking=1 ; ac_gc_checking=1 ;
ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
ac_tree_checking=1 ; ac_valgrind_checking= ;
ac_types_checking=1 ;;
release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
ac_fold_checking= ; ac_gc_checking= ;
ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
ac_rtlflag_checking= ; ac_runtime_checking=1 ;
ac_tree_checking= ; ac_valgrind_checking= ;
ac_types_checking= ;;
# these enable particular checks
assert) ac_assert_checking=1 ;;
df) ac_df_checking=1 ;;
fold) ac_fold_checking=1 ;;
gc) ac_gc_checking=1 ;;
gcac) ac_gc_always_collect=1 ;;
gimple) ac_gimple_checking=1 ;;
misc) ac_checking=1 ;;
rtl) ac_rtl_checking=1 ;;
rtlflag) ac_rtlflag_checking=1 ;;
runtime) ac_runtime_checking=1 ;;
tree) ac_tree_checking=1 ;;
types) ac_types_checking=1 ;;
valgrind) ac_valgrind_checking=1 ;;
*) AC_MSG_ERROR(unknown check category $check) ;;
esac
done
IFS="$ac_save_IFS"
nocommon_flag=""
if test x$ac_checking != x ; then
AC_DEFINE(ENABLE_CHECKING, 1,
[Define if you want more run-time sanity checks. This one gets a grab
bag of miscellaneous but relatively cheap checks.])
nocommon_flag=-fno-common
fi
AC_SUBST(nocommon_flag)
if test x$ac_df_checking != x ; then
AC_DEFINE(ENABLE_DF_CHECKING, 1,
[Define if you want more run-time sanity checks for dataflow.])
fi
if test x$ac_assert_checking != x ; then
AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
[Define if you want assertions enabled. This is a cheap check.])
fi
if test x$ac_gimple_checking != x ; then
AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
[Define if you want operations on GIMPLE (the basic data structure of
the high-level optimizers) to be checked for dynamic type safety at
runtime. This is moderately expensive.])
fi
GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
if test x$ac_runtime_checking != x ; then
AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
[Define if you want runtime assertions enabled. This is a cheap check.])
fi
if test x$ac_tree_checking != x ; then
AC_DEFINE(ENABLE_TREE_CHECKING, 1,
[Define if you want all operations on trees (the basic data
structure of the front ends) to be checked for dynamic type safety
at runtime. This is moderately expensive. The tree browser debugging
routines will also be enabled by this option.
])
TREEBROWSER=tree-browser.o
fi
if test x$ac_types_checking != x ; then
AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
[Define if you want all gimple types to be verified after gimplifiation.
This is cheap.
])
fi
AC_SUBST(TREEBROWSER)
if test x$ac_rtl_checking != x ; then
AC_DEFINE(ENABLE_RTL_CHECKING, 1,
[Define if you want all operations on RTL (the basic data structure
of the optimizer and back end) to be checked for dynamic type safety
at runtime. This is quite expensive.])
fi
if test x$ac_rtlflag_checking != x ; then
AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
[Define if you want RTL flag accesses to be checked against the RTL
codes that are supported for each access macro. This is relatively
cheap.])
fi
if test x$ac_gc_checking != x ; then
AC_DEFINE(ENABLE_GC_CHECKING, 1,
[Define if you want the garbage collector to do object poisoning and
other memory allocation checks. This is quite expensive.])
fi
if test x$ac_gc_always_collect != x ; then
AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
[Define if you want the garbage collector to operate in maximally
paranoid mode, validating the entire heap and collecting garbage at
every opportunity. This is extremely expensive.])
fi
if test x$ac_fold_checking != x ; then
AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
[Define if you want fold checked that it never destructs its argument.
This is quite expensive.])
fi
valgrind_path_defines=
valgrind_command=
dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
dnl # an if statement. This was the source of very frustrating bugs
dnl # in converting to autoconf 2.5x!
AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
if test x$ac_valgrind_checking != x ; then
# It is certainly possible that there's valgrind but no valgrind.h.
# GCC relies on making annotations so we must have both.
AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
AC_PREPROC_IFELSE([AC_LANG_SOURCE(
[[#include <valgrind/memcheck.h>
#ifndef VALGRIND_DISCARD
#error VALGRIND_DISCARD not defined
#endif]])],
[gcc_cv_header_valgrind_memcheck_h=yes],
[gcc_cv_header_valgrind_memcheck_h=no])
AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
AC_PREPROC_IFELSE([AC_LANG_SOURCE(
[[#include <memcheck.h>
#ifndef VALGRIND_DISCARD
#error VALGRIND_DISCARD not defined
#endif]])],
[gcc_cv_header_memcheck_h=yes],
[gcc_cv_header_memcheck_h=no])
AC_MSG_RESULT($gcc_cv_header_memcheck_h)
AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
[$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
if test "x$valgrind_path" = "x" \
|| (test $have_valgrind_h = no \
&& test $gcc_cv_header_memcheck_h = no \
&& test $gcc_cv_header_valgrind_memcheck_h = no); then
AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
fi
valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
valgrind_command="$valgrind_path -q"
AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
[Define if you want to run subprograms and generated programs
through valgrind (a memory checker). This is extremely expensive.])
if test $gcc_cv_header_valgrind_memcheck_h = yes; then
AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
[Define if valgrind's valgrind/memcheck.h header is installed.])
fi
if test $gcc_cv_header_memcheck_h = yes; then
AC_DEFINE(HAVE_MEMCHECK_H, 1,
[Define if valgrind's memcheck.h header is installed.])
fi
fi
AC_SUBST(valgrind_path_defines)
AC_SUBST(valgrind_command)
# Enable code coverage collection
AC_ARG_ENABLE(coverage,
[ --enable-coverage[=LEVEL]
enable compiler's code coverage collection.
Use to measure compiler performance and locate
unused parts of the compiler. With LEVEL, specify
optimization. Values are opt, noopt,
default is noopt],
[case "${enableval}" in
yes|noopt)
coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
;;
opt)
coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
;;
no)
# a.k.a. --disable-coverage
coverage_flags=""
;;
*)
AC_MSG_ERROR(unknown coverage setting $enableval)
;;
esac],
[coverage_flags=""])
AC_SUBST(coverage_flags)
AC_ARG_ENABLE(gather-detailed-mem-stats,
[ --enable-gather-detailed-mem-stats enable detailed memory allocation stats gathering], [],
[enable_gather_detailed_mem_stats=no])
if test x$enable_gather_detailed_mem_stats = xyes ; then
AC_DEFINE(GATHER_STATISTICS, 1,
[Define to enable detailed memory allocation stats gathering.])
fi
# -------------------------------
# Miscenalleous configure options
# -------------------------------
# With stabs
AC_ARG_WITH(stabs,
[ --with-stabs arrange to use stabs instead of host debug format],
stabs="$with_stabs",
stabs=no)
# Determine whether or not multilibs are enabled.
AC_ARG_ENABLE(multilib,
[ --enable-multilib enable library support for multiple ABIs],
[], [enable_multilib=yes])
AC_SUBST(enable_multilib)
# Enable __cxa_atexit for C++.
AC_ARG_ENABLE(__cxa_atexit,
[ --enable-__cxa_atexit enable __cxa_atexit for C++],
[], [])
# Enable C extension for decimal float if target supports it.
AC_ARG_ENABLE(decimal-float,
[ --enable-decimal-float={no,yes,bid,dpd}
enable decimal float extension to C. Selecting 'bid'
or 'dpd' choses which decimal floating point format
to use],
[
case $enable_decimal_float in
yes | no | bid | dpd) ;;
*) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
esac
],
[
case $target in
powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | i?86*-*-nacl*)
enable_decimal_float=yes
;;
*)
AC_MSG_WARN(decimal float is not supported for this target, ignored)
enable_decimal_float=no
;;
esac
])
dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
[Define to 1 to enable decimal float extension to C.])
# x86's use BID format instead of DPD
case x$enable_decimal_float in
xyes)
case $target in
i?86*-*-linux* | x86_64*-*-linux*)
enable_decimal_float=bid
;;
*)
enable_decimal_float=dpd
;;
esac
;;
xno)
# ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
# dependency on libdecnumber.
enable_decimal_float=dpd
;;
esac
AC_SUBST(enable_decimal_float)
bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
[Define to 1 to specify that we are using the BID decimal floating
point format instead of DPD])
# Enable C extension for fixed-point arithmetic.
AC_ARG_ENABLE(fixed-point,
[ --enable-fixed-point enable fixed-point arithmetic extension to C],
[
],
[
case $target in
mips*-*-*)
case $host in
mips*-sgi-irix*)
AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
enable_fixed_point=no
;;
*)
enable_fixed_point=yes
;;
esac
;;
*)
AC_MSG_WARN(fixed-point is not supported for this target, ignored)
enable_fixed_point=no
;;
esac
])
AC_SUBST(enable_fixed_point)
fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
[Define to 1 to enable fixed-point arithmetic extension to C.])
# Enable threads
# Pass with no value to take the default
# Pass with a value to specify a thread package
AC_ARG_ENABLE(threads,
[ --enable-threads enable thread usage for target GCC
--enable-threads=LIB use LIB thread package for target GCC],,
[enable_threads=''])
AC_ARG_ENABLE(tls,
[ --enable-tls enable or disable generation of tls code
overriding the assembler check for tls support],
[
case $enable_tls in
yes | no) ;;
*) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
Valid choices are 'yes' and 'no'.]) ;;
esac
], [enable_tls=''])
AC_ARG_ENABLE(objc-gc,
[ --enable-objc-gc enable the use of Boehm's garbage collector with
the GNU Objective-C runtime],
if test x$enable_objc_gc = xno; then
objc_boehm_gc=''
else
objc_boehm_gc=1
fi,
objc_boehm_gc='')
AC_ARG_WITH(dwarf2,
[ --with-dwarf2 force the default debug format to be DWARF 2],
dwarf2="$with_dwarf2",
dwarf2=no)
AC_ARG_ENABLE(shared,
[ --disable-shared don't provide a shared libgcc],
[
case $enable_shared in
yes | no) ;;
*)
enable_shared=no
IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
for pkg in $enableval; do
if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
enable_shared=yes
fi
done
IFS="$ac_save_ifs"
;;
esac
], [enable_shared=yes])
AC_SUBST(enable_shared)
AC_ARG_WITH(build-sysroot,
[ --with-build-sysroot=sysroot
use sysroot as the system root during the build])
AC_ARG_WITH(sysroot,
[ --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
[
case ${with_sysroot} in
yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
*) TARGET_SYSTEM_ROOT=$with_sysroot ;;
esac
TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
if test "x$prefix" = xNONE; then
test_prefix=/usr/local
else
test_prefix=$prefix
fi
if test "x$exec_prefix" = xNONE; then
test_exec_prefix=$test_prefix
else
test_exec_prefix=$exec_prefix
fi
case ${TARGET_SYSTEM_ROOT} in
"${test_prefix}"|"${test_prefix}/"*|\
"${test_exec_prefix}"|"${test_exec_prefix}/"*|\
'${prefix}'|'${prefix}/'*|\
'${exec_prefix}'|'${exec_prefix}/'*)
t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
TARGET_SYSTEM_ROOT_DEFINE="$t"
;;
esac
], [
TARGET_SYSTEM_ROOT=
TARGET_SYSTEM_ROOT_DEFINE=
CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
])
AC_SUBST(TARGET_SYSTEM_ROOT)
AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
# Build with intermodule optimisations
AC_ARG_ENABLE(intermodule,
[ --enable-intermodule build the compiler in one step],
[case ${enable_intermodule} in
yes) onestep="-onestep";;
*) onestep="";;
esac],
[onestep=""])
AC_SUBST(onestep)
ACX_PKGVERSION([GCC])
ACX_BUGURL([http://gcc.gnu.org/bugs.html])
# Sanity check enable_languages in case someone does not run the toplevel
# configure # script.
AC_ARG_ENABLE(languages,
[ --enable-languages=LIST specify which front-ends to build],
[case ,${enable_languages}, in
,,|,yes,)
# go safe -- we cannot be much sure without the toplevel
# configure's
# analysis of which target libs are present and usable
enable_languages=c
;;
*,all,*)
AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
;;
*,c,*)
;;
*)
enable_languages=c,${enable_languages}
;;
esac],
[enable_languages=c])
# Used by documentation targets
AC_SUBST(datarootdir)
AC_SUBST(docdir)
AC_SUBST(htmldir)
# -------------------------
# Checks for other programs
# -------------------------
AC_PROG_MAKE_SET
# Find some useful tools
AC_PROG_AWK
# We need awk to create options.c and options.h.
# Bail out if it's missing.
case ${AWK} in
"") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
esac
gcc_AC_PROG_LN_S
ACX_PROG_LN($LN_S)
AC_PROG_RANLIB
case "${host}" in
*-*-darwin*)
# By default, the Darwin ranlib will not treat common symbols as
# definitions when building the archive table of contents. Other
# ranlibs do that; pass an option to the Darwin ranlib that makes
# it behave similarly.
ranlib_flags="-c"
;;
*)
ranlib_flags=""
esac
AC_SUBST(ranlib_flags)
gcc_AC_PROG_INSTALL
# See if cmp has --ignore-initial.
gcc_AC_PROG_CMP_IGNORE_INITIAL
# See if we have the mktemp command.
AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
# See if makeinfo has been installed and is modern enough
# that we can use it.
ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
[GNU texinfo.* \([0-9][0-9.]*\)],
[4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
if test $gcc_cv_prog_makeinfo_modern = no; then
AC_MSG_WARN([
*** Makeinfo is missing or too old.
*** Info documentation will not be built.])
BUILD_INFO=
else
BUILD_INFO=info
fi
AC_SUBST(BUILD_INFO)
# Is pod2man recent enough to regenerate manpages?
AC_MSG_CHECKING([for recent Pod::Man])
if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
AC_MSG_RESULT(yes)
GENERATED_MANPAGES=generated-manpages
else
AC_MSG_RESULT(no)
GENERATED_MANPAGES=
fi
AC_SUBST(GENERATED_MANPAGES)
MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
# How about lex?
dnl Don't use AC_PROG_LEX; we insist on flex.
dnl LEXLIB is not useful in gcc.
AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
# Bison?
AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
# Binutils are not build modules, unlike bison/flex/makeinfo. So we
# check for build == host before using them.
# NM
if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
&& test -d ../binutils ; then
NM='$(objdir)/../binutils/nm-new'
else
AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
fi
# AR
if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
&& test -d ../binutils ; then
AR='$(objdir)/../binutils/ar'
else
AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
fi
# --------------------
# Checks for C headers
# --------------------
# Need to reject headers which give warnings, so that the -Werror bootstrap
# works later. *sigh* This needs to come before all header checks.
AC_PROG_CPP_WERROR
AC_HEADER_STDC
AC_HEADER_TIME
ACX_HEADER_STRING
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
sys/resource.h sys/param.h sys/times.h sys/stat.h \
direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
# Check for thread headers.
AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
# These tests can't be done till we know if we have limits.h.
gcc_AC_C_CHAR_BIT
AC_C_BIGENDIAN
# --------
# UNSORTED
# --------
# These libraries may be used by collect2.
# We may need a special search path to get them linked.
AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
[save_LIBS="$LIBS"
for libs in '' -lld -lmld \
'-L/usr/lib/cmplrs/cc2.11 -lmld' \
'-L/usr/lib/cmplrs/cc3.11 -lmld'
do
LIBS="$libs"
AC_TRY_LINK_FUNC(ldopen,
[gcc_cv_collect2_libs="$libs"; break])
done
LIBS="$save_LIBS"
test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
case $gcc_cv_collect2_libs in
"none required") ;;
*) COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
esac
AC_SUBST(COLLECT2_LIBS)
# When building Ada code on Alpha, we need exc_resume which is usually in
# -lexc. So test for it.
save_LIBS="$LIBS"
LIBS=
AC_SEARCH_LIBS(exc_resume, exc)
GNAT_LIBEXC="$LIBS"
LIBS="$save_LIBS"
AC_SUBST(GNAT_LIBEXC)
# Some systems put ldexp and frexp in libm instead of libc; assume
# they're both in the same place. jcf-dump needs them.
save_LIBS="$LIBS"
LIBS=
AC_SEARCH_LIBS(ldexp, m)
LDEXP_LIB="$LIBS"
LIBS="$save_LIBS"
AC_SUBST(LDEXP_LIB)
# Use <inttypes.h> only if it exists,
# doesn't clash with <sys/types.h>, and declares intmax_t.
AC_MSG_CHECKING(for inttypes.h)
AC_CACHE_VAL(gcc_cv_header_inttypes_h,
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
[[#include <sys/types.h>
#include <inttypes.h>]],
[[intmax_t i = -1;]])],
[gcc_cv_header_inttypes_h=yes],
[gcc_cv_header_inttypes_h=no])])
AC_MSG_RESULT($gcc_cv_header_inttypes_h)
if test $gcc_cv_header_inttypes_h = yes; then
AC_DEFINE(HAVE_INTTYPES_H, 1,
[Define if you have a working <inttypes.h> header file.])
fi
dnl Disabled until we have a complete test for buggy enum bitfields.
dnl gcc_AC_C_ENUM_BF_UNSIGNED
define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
putchar_unlocked putc_unlocked)
AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
sysconf strsignal getrusage nl_langinfo \
gettimeofday mbstowcs wcswidth mmap mincore setlocale \
gcc_UNLOCKED_FUNCS)
if test x$ac_cv_func_mbstowcs = xyes; then
AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
[ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
int main()
{
mbstowcs(0, "", 0);
return 0;
}]])],
[gcc_cv_func_mbstowcs_works=yes],
[gcc_cv_func_mbstowcs_works=no],
[gcc_cv_func_mbstowcs_works=yes])])
if test x$gcc_cv_func_mbstowcs_works = xyes; then
AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
[Define this macro if mbstowcs does not crash when its
first argument is NULL.])
fi
fi
AC_CHECK_TYPE(ssize_t, int)
AC_CHECK_TYPE(caddr_t, char *)
# Try to determine the array type of the second argument of getgroups
# for the target system (int or gid_t).
AC_TYPE_GETGROUPS
if test "${target}" = "${build}"; then
TARGET_GETGROUPS_T=$ac_cv_type_getgroups
else
case "${target}" in
# This condition may need some tweaking. It should include all
# targets where the array type of the second argument of getgroups
# is int and the type of gid_t is not equivalent to int.
*-*-sunos* | *-*-ultrix*)
TARGET_GETGROUPS_T=int
;;
*)
TARGET_GETGROUPS_T=gid_t
;;
esac
fi
AC_SUBST(TARGET_GETGROUPS_T)
gcc_AC_FUNC_MMAP_BLACKLIST
case "${host}" in
*-*-*vms*)
# Under VMS, vfork works very differently than on Unix. The standard test
# won't work, and it isn't easily adaptable. It makes more sense to
# just force it.
ac_cv_func_vfork_works=yes
;;
esac
AC_FUNC_FORK
AM_ICONV
# Until we have in-tree GNU iconv:
LIBICONV_DEP=
AC_SUBST(LIBICONV_DEP)
AM_LC_MESSAGES
AM_LANGINFO_CODESET
# We will need to find libiberty.h and ansidecl.h
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
strsignal strstr strverscmp \
errno snprintf vsnprintf vasprintf malloc realloc calloc \
free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
#include "ansidecl.h"
#include "system.h"])
gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
#include "ansidecl.h"
#include "system.h"
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include "ansidecl.h"
#include "system.h"
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
[Define to `long' if <sys/resource.h> doesn't define.])])
# On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
# FREAD and FWRITE macros. Fortunately, for GCC's single usage of ldgetname
# in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
# to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
gcc_AC_CHECK_DECLS(ldgetname, , ,[
#include "ansidecl.h"
#include "system.h"
#ifdef HAVE_LDFCN_H
#undef FREAD
#undef FWRITE
#include <ldfcn.h>
#endif
])
gcc_AC_CHECK_DECLS(times, , ,[
#include "ansidecl.h"
#include "system.h"
#ifdef HAVE_SYS_TIMES_H
#include <sys/times.h>
#endif
])
gcc_AC_CHECK_DECLS(sigaltstack, , ,[
#include "ansidecl.h"
#include "system.h"
#include <signal.h>
])
# More time-related stuff.
AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include "ansidecl.h"
#include "system.h"
#ifdef HAVE_SYS_TIMES_H
#include <sys/times.h>
#endif
]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
if test $ac_cv_struct_tms = yes; then
AC_DEFINE(HAVE_STRUCT_TMS, 1,
[Define if <sys/times.h> defines struct tms.])
fi
# use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
# revisit after autoconf 2.50.
AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include "ansidecl.h"
#include "system.h"
]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
if test $gcc_cv_type_clock_t = yes; then
AC_DEFINE(HAVE_CLOCK_T, 1,
[Define if <time.h> defines clock_t.])
fi
# Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
CFLAGS="$saved_CFLAGS"
gcc_AC_INITFINI_ARRAY
# mkdir takes a single argument on some systems.
gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
# File extensions
manext='.1'
objext='.o'
AC_SUBST(manext)
AC_SUBST(objext)
# With Setjmp/Longjmp based exception handling.
AC_ARG_ENABLE(sjlj-exceptions,
[ --enable-sjlj-exceptions
arrange to use setjmp/longjmp exception handling],
[case $target in
*-*-hpux10*)
if test $enableval != yes; then
AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
enableval=yes
fi
;;
esac
force_sjlj_exceptions=yes],
[case $target in
*-*-hpux10*)
force_sjlj_exceptions=yes
enableval=yes
;;
*)
force_sjlj_exceptions=no
;;
esac])
if test $force_sjlj_exceptions = yes; then
sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
[Define 0/1 to force the choice for exception handling model.])
fi
# For platforms with the unwind ABI which includes an unwind library,
# libunwind, we can choose to use the system libunwind.
# config.gcc also contains tests of with_system_libunwind.
GCC_CHECK_UNWIND_GETIPINFO
# --------------------------------------------------------
# Build, host, and target specific configuration fragments
# --------------------------------------------------------
# Collect build-machine-specific information.
. ${srcdir}/config.build
# Collect host-machine-specific information.
. ${srcdir}/config.host
target_gtfiles=
# Collect target-machine-specific information.
. ${srcdir}/config.gcc
extra_objs="${host_extra_objs} ${extra_objs}"
extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
# Default the target-machine variables that were not explicitly set.
if test x"$tm_file" = x
then tm_file=$cpu_type/$cpu_type.h; fi
if test x"$extra_headers" = x
then extra_headers=; fi
if test x$md_file = x
then md_file=$cpu_type/$cpu_type.md; fi
if test x$out_file = x
then out_file=$cpu_type/$cpu_type.c; fi
if test x"$tmake_file" = x
then tmake_file=$cpu_type/t-$cpu_type
fi
if test x"$dwarf2" = xyes
then tm_file="$tm_file tm-dwarf2.h"
fi
# Say what files are being used for the output code and MD file.
echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
echo "Using \`$srcdir/config/$md_file' as machine description file."
# If any of the xm_file variables contain nonexistent files, warn
# about them and drop them.
bx=
for x in $build_xm_file; do
if test -f $srcdir/config/$x
then bx="$bx $x"
else AC_MSG_WARN($srcdir/config/$x does not exist.)
fi
done
build_xm_file="$bx"
hx=
for x in $host_xm_file; do
if test -f $srcdir/config/$x
then hx="$hx $x"
else AC_MSG_WARN($srcdir/config/$x does not exist.)
fi
done
host_xm_file="$hx"
tx=
for x in $xm_file; do
if test -f $srcdir/config/$x
then tx="$tx $x"
else AC_MSG_WARN($srcdir/config/$x does not exist.)
fi
done
xm_file="$tx"
count=a
for f in $tm_file; do
count=${count}x
done
if test $count = ax; then
echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
else
echo "Using the following target machine macro files:"
for f in $tm_file; do
echo " $srcdir/config/$f"
done
fi
if test x$need_64bit_hwint = xyes; then
AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
[Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
fi
if test x$use_long_long_for_widest_fast_int = xyes; then
AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
[Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
efficiently supported by the host hardware.])
fi
count=a
for f in $host_xm_file; do
count=${count}x
done
if test $count = a; then
:
elif test $count = ax; then
echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
else
echo "Using the following host machine macro files:"
for f in $host_xm_file; do
echo " $srcdir/config/$f"
done
fi
echo "Using ${out_host_hook_obj} for host machine hooks."
if test "$host_xm_file" != "$build_xm_file"; then
count=a
for f in $build_xm_file; do
count=${count}x
done
if test $count = a; then
:
elif test $count = ax; then
echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
else
echo "Using the following build machine macro files:"
for f in $build_xm_file; do
echo " $srcdir/config/$f"
done
fi
fi
case ${host} in
powerpc*-*-darwin*)
AC_CACHE_CHECK([whether mcontext_t fields have underscores],
gcc_cv_mcontext_underscores,
AC_COMPILE_IFELSE([
#include <sys/cdefs.h>
#include <sys/signal.h>
#include <ucontext.h>
int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
],
gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
if test $gcc_cv_mcontext_underscores = yes; then
AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
[mcontext_t fields start with __])
fi
;;
esac
# ---------
# Threading
# ---------
# Check if a valid thread package
case ${enable_threads} in
"" | no)
# No threads
target_thread_file='single'
;;
yes)
# default
target_thread_file='single'
;;
aix | dce | gnat | irix | nacl | posix | posix95 | rtems | \
single | solaris | vxworks | win32 | mipssde)
target_thread_file=${enable_threads}
;;
*)
echo "${enable_threads} is an unknown thread package" 1>&2
exit 1
;;
esac
if test x${thread_file} = x; then
# No thread file set by target-specific clauses in config.gcc,
# so use file chosen by default logic above
thread_file=${target_thread_file}
fi
# Make gthr-default.h if we have a thread file.
gthread_flags=
if test $thread_file != single; then
echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
rm -f gthr-default.h-t
else
mv -f gthr-default.h-t gthr-default.h
fi
gthread_flags=-DHAVE_GTHR_DEFAULT
fi
AC_SUBST(gthread_flags)
# --------
# UNSORTED
# --------
use_cxa_atexit=no
if test x$enable___cxa_atexit = xyes || \
test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
if test x$host = x$target; then
case $host in
# mingw32 doesn't have __cxa_atexit but uses atexit registration
# keyed to flag_use_cxa_atexit
*-*-mingw32*)
use_cxa_atexit=yes
;;
*)
AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
[echo "__cxa_atexit can't be enabled on this target"])
;;
esac
else
# We can't check for __cxa_atexit when building a cross, so assume
# it is available
use_cxa_atexit=yes
fi
if test x$use_cxa_atexit = xyes; then
AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
[Define if you want to use __cxa_atexit, rather than atexit, to
register C++ destructors for local statics and global objects.
This is essential for fully standards-compliant handling of
destructors, but requires __cxa_atexit in libc.])
fi
fi
# Look for a file containing extra machine modes.
if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
extra_modes_file='$(srcdir)'/config/${extra_modes}
AC_SUBST(extra_modes_file)
AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
[Define to the name of a file containing a list of extra machine modes
for this architecture.])
fi
# Convert extra_options into a form suitable for Makefile use.
extra_opt_files=
for f in $extra_options; do
extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
done
AC_SUBST(extra_opt_files)
# auto-host.h is the file containing items generated by autoconf and is
# the first file included by config.h.
# If host=build, it is correct to have bconfig include auto-host.h
# as well. If host!=build, we are in error and need to do more
# work to find out the build config parameters.
if test x$host = x$build
then
build_auto=auto-host.h
else
# We create a subdir, then run autoconf in the subdir.
# To prevent recursion we set host and build for the new
# invocation of configure to the build for this invocation
# of configure.
tempdir=build.$$
rm -rf $tempdir
mkdir $tempdir
cd $tempdir
case ${srcdir} in
/* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
*) realsrcdir=../${srcdir};;
esac
saved_CFLAGS="${CFLAGS}"
CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
LDFLAGS="${LDFLAGS_FOR_BUILD}" \
${realsrcdir}/configure \
--enable-languages=${enable_languages-all} \
--target=$target_alias --host=$build_alias --build=$build_alias
CFLAGS="${saved_CFLAGS}"
# We just finished tests for the build machine, so rename
# the file auto-build.h in the gcc directory.
mv auto-host.h ../auto-build.h
cd ..
rm -rf $tempdir
build_auto=auto-build.h
fi
AC_SUBST(build_subdir)
tm_file="${tm_file} defaults.h"
tm_p_file="${tm_p_file} tm-preds.h"
host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
# We don't want ansidecl.h in target files, write code there in ISO/GNU C.
# put this back in temporarily.
xm_file="auto-host.h ansidecl.h ${xm_file}"
# --------
# UNSORTED
# --------
changequote(,)dnl
# Compile in configure arguments.
if test -f configargs.h ; then
# Being re-configured.
gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
else
gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
fi
# Double all backslashes and backslash all quotes to turn
# gcc_config_arguments into a C string.
sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
$gcc_config_arguments
EOF
gcc_config_arguments_str=`cat conftest.out`
rm -f conftest.out
cat > configargs.h <<EOF
/* Generated automatically. */
static const char configuration_arguments[] = "$gcc_config_arguments_str";
static const char thread_model[] = "$thread_file";
static const struct {
const char *name, *value;
} configure_default_options[] = $configure_default_options;
EOF
changequote([,])dnl
# Internationalization
ZW_GNU_GETTEXT_SISTER_DIR
# If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
# -liconv on the link line twice.
case "$LIBINTL" in *$LIBICONV*)
LIBICONV= ;;
esac
AC_ARG_ENABLE(secureplt,
[ --enable-secureplt enable -msecure-plt by default for PowerPC],
[], [])
AC_ARG_ENABLE(cld,
[ --enable-cld enable -mcld by default for 32bit x86], [],
[enable_cld=no])
# Windows32 Registry support for specifying GCC installation paths.
AC_ARG_ENABLE(win32-registry,
[ --disable-win32-registry
disable lookup of installation paths in the
Registry on Windows hosts
--enable-win32-registry enable registry lookup (default)
--enable-win32-registry=KEY
use KEY instead of GCC version as the last portion
of the registry key],,)
case $host_os in
win32 | pe | cygwin* | mingw32* | uwin*)
if test "x$enable_win32_registry" != xno; then
AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
fi
if test "x$enable_win32_registry" != xno; then
AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
[Define to 1 if installation paths should be looked up in the Windows
Registry. Ignored on non-Windows hosts.])
if test "x$enable_win32_registry" != xyes \
&& test "x$enable_win32_registry" != x; then
AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
[Define to be the last component of the Windows registry key under which
to look for installation paths. The full key used will be
HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
The default is the GCC version number.])
fi
fi
;;
esac
# Get an absolute path to the GCC top-level source directory
holddir=`${PWDCMD-pwd}`
cd $srcdir
topdir=`${PWDCMD-pwd}`
cd $holddir
# Conditionalize the makefile for this host machine.
xmake_file=
for f in ${host_xmake_file}
do
if test -f ${srcdir}/config/$f
then
xmake_file="${xmake_file} \$(srcdir)/config/$f"
fi
done
# Conditionalize the makefile for this target machine.
tmake_file_=
for f in ${tmake_file}
do
if test -f ${srcdir}/config/$f
then
tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
fi
done
tmake_file="${tmake_file_}"
out_object_file=`basename $out_file .c`.o
tm_file_list="options.h"
tm_include_list="options.h"
for f in $tm_file; do
case $f in
./* )
f=`echo $f | sed 's/^..//'`
tm_file_list="${tm_file_list} $f"
tm_include_list="${tm_include_list} $f"
;;
defaults.h )
tm_file_list="${tm_file_list} \$(srcdir)/$f"
tm_include_list="${tm_include_list} $f"
;;
* )
tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
tm_include_list="${tm_include_list} config/$f"
;;
esac
done
tm_p_file_list=
tm_p_include_list=
for f in $tm_p_file; do
case $f in
tm-preds.h )
tm_p_file_list="${tm_p_file_list} $f"
tm_p_include_list="${tm_p_include_list} $f"
;;
* )
tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
tm_p_include_list="${tm_p_include_list} config/$f"
esac
done
xm_file_list=
xm_include_list=
for f in $xm_file; do
case $f in
ansidecl.h )
xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
xm_include_list="${xm_include_list} $f"
;;
auto-host.h )
xm_file_list="${xm_file_list} $f"
xm_include_list="${xm_include_list} $f"
;;
* )
xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
xm_include_list="${xm_include_list} config/$f"
;;
esac
done
host_xm_file_list=
host_xm_include_list=
for f in $host_xm_file; do
case $f in
ansidecl.h )
host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
host_xm_include_list="${host_xm_include_list} $f"
;;
auto-host.h )
host_xm_file_list="${host_xm_file_list} $f"
host_xm_include_list="${host_xm_include_list} $f"
;;
* )
host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
host_xm_include_list="${host_xm_include_list} config/$f"
;;
esac
done
build_xm_file_list=
for f in $build_xm_file; do
case $f in
ansidecl.h )
build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
build_xm_include_list="${build_xm_include_list} $f"
;;
auto-build.h | auto-host.h )
build_xm_file_list="${build_xm_file_list} $f"
build_xm_include_list="${build_xm_include_list} $f"
;;
* )
build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
build_xm_include_list="${build_xm_include_list} config/$f"
;;
esac
done
# Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
# cross-compiler which does not use the native headers and libraries.
# Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
CROSS= AC_SUBST(CROSS)
ALL=all.internal AC_SUBST(ALL)
SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
if test "x$with_build_sysroot" != x; then
build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
else
# This value is used, even on a native system, because
# CROSS_SYSTEM_HEADER_DIR is just
# $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
fi
if test x$host != x$target
then
CROSS="-DCROSS_DIRECTORY_STRUCTURE"
ALL=all.cross
SYSTEM_HEADER_DIR=$build_system_header_dir
case "$host","$target" in
# Darwin crosses can use the host system's libraries and headers,
# because of the fat library support. Of course, it must be the
# same version of Darwin on both sides. Allow the user to
# just say --target=foo-darwin without a version number to mean
# "the version on this system".
*-*-darwin*,*-*-darwin*)
hostos=`echo $host | sed 's/.*-darwin/darwin/'`
targetos=`echo $target | sed 's/.*-darwin/darwin/'`
if test $hostos = $targetos -o $targetos = darwin ; then
CROSS=
SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
with_headers=yes
fi
;;
i?86-*-*,x86_64-*-* \
| powerpc*-*-*,powerpc64*-*-*)
CROSS="$CROSS -DNATIVE_CROSS" ;;
esac
elif test "x$TARGET_SYSTEM_ROOT" != x; then
SYSTEM_HEADER_DIR=$build_system_header_dir
fi
# If this is a cross-compiler that does not
# have its own set of headers then define
# inhibit_libc
# If this is using newlib, without having the headers available now,
# then define inhibit_libc in LIBGCC2_CFLAGS.
# This prevents libgcc2 from containing any code which requires libc
# support.
: ${inhibit_libc=false}
if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
test x$with_newlib = xyes ; } &&
{ test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
inhibit_libc=true
fi
AC_SUBST(inhibit_libc)
# When building gcc with a cross-compiler, we need to adjust things so
# that the generator programs are still built with the native compiler.
# Also, we cannot run fixincludes or fix-header.
# These are the normal (build=host) settings:
CC_FOR_BUILD='$(CC)' AC_SUBST(CC_FOR_BUILD)
BUILD_CFLAGS='$(ALL_CFLAGS)' AC_SUBST(BUILD_CFLAGS)
BUILD_LDFLAGS='$(LDFLAGS)' AC_SUBST(BUILD_LDFLAGS)
STMP_FIXINC=stmp-fixinc AC_SUBST(STMP_FIXINC)
# Possibly disable fixproto, on a per-target basis.
case ${use_fixproto} in
no)
STMP_FIXPROTO=
;;
yes)
STMP_FIXPROTO=stmp-fixproto
;;
esac
AC_SUBST(STMP_FIXPROTO)
# And these apply if build != host, or we are generating coverage data
if test x$build != x$host || test "x$coverage_flags" != x
then
BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
if test "x$TARGET_SYSTEM_ROOT" = x; then
if test "x$STMP_FIXPROTO" != x; then
STMP_FIXPROTO=stmp-install-fixproto
fi
fi
fi
# Expand extra_headers to include complete path.
# This substitutes for lots of t-* files.
extra_headers_list=
# Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
for file in ${extra_headers} ; do
extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
done
# If use_gcc_tgmath is set, append ginclude/tgmath.h.
if test x"$use_gcc_tgmath" = xyes
then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
fi
# Define collect2 in Makefile.
case $host_can_use_collect2 in
no) collect2= ;;
*) collect2='collect2$(exeext)' ;;
esac
AC_SUBST([collect2])
# Add a definition of USE_COLLECT2 if system wants one.
case $use_collect2 in
no) use_collect2= ;;
"") ;;
*)
host_xm_defines="${host_xm_defines} USE_COLLECT2"
xm_defines="${xm_defines} USE_COLLECT2"
case $host_can_use_collect2 in
no)
AC_MSG_ERROR([collect2 is required but cannot be built on this system])
;;
esac
;;
esac
# ---------------------------
# Assembler & linker features
# ---------------------------
# During stage 2, ld is actually gcc/collect-ld, which is a small script to
# discern between when to use prev-ld/ld-new and when to use ld/ld-new.
# However when ld-new is first executed from the build tree, libtool will
# relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
# to the build tree. While doing this we need to use the previous-stage
# linker, or we have an infinite loop. The presence of a shell script as
# ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
# the gcc/collect-ld script. So we need to know how libtool works, or
# exec-tool will fail.
m4_defun([_LT_CONFIG_COMMANDS], [])
AC_PROG_LIBTOOL
AC_SUBST(objdir)
AC_SUBST(enable_fast_install)
# Identify the assembler which will work hand-in-glove with the newly
# built GCC, so that we can examine its features. This is the assembler
# which will be driven by the driver program.
#
# If build != host, and we aren't building gas in-tree, we identify a
# build->target assembler and hope that it will have the same features
# as the host->target assembler we'll be using.
gcc_cv_gas_major_version=
gcc_cv_gas_minor_version=
gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
m4_pattern_allow([AS_FOR_TARGET])dnl
AS_VAR_SET_IF(gcc_cv_as,, [
if test -x "$DEFAULT_ASSEMBLER"; then
gcc_cv_as="$DEFAULT_ASSEMBLER"
elif test -f $gcc_cv_as_gas_srcdir/configure.in \
&& test -f ../gas/Makefile \
&& test x$build = x$host; then
gcc_cv_as=../gas/as-new$build_exeext
elif test -x as$build_exeext; then
# Build using assembler in the current directory.
gcc_cv_as=./as$build_exeext
elif test -x $AS_FOR_TARGET; then
gcc_cv_as="$AS_FOR_TARGET"
else
AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
fi])
ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
AC_SUBST(ORIGINAL_AS_FOR_TARGET)
case "$ORIGINAL_AS_FOR_TARGET" in
./as | ./as$build_exeext) ;;
*) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
esac
AC_MSG_CHECKING(what assembler to use)
if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
# Single tree build which includes gas. We want to prefer it
# over whatever linker top-level may have detected, since
# we'll use what we're building after installation anyway.
AC_MSG_RESULT(newly built gas)
in_tree_gas=yes
_gcc_COMPUTE_GAS_VERSION
in_tree_gas_is_elf=no
if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
|| (grep 'obj_format = multi' ../gas/Makefile \
&& grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
then
in_tree_gas_is_elf=yes
fi
else
AC_MSG_RESULT($gcc_cv_as)
in_tree_gas=no
fi
# Identify the linker which will work hand-in-glove with the newly
# built GCC, so that we can examine its features. This is the linker
# which will be driven by the driver program.
#
# If build != host, and we aren't building gas in-tree, we identify a
# build->target linker and hope that it will have the same features
# as the host->target linker we'll be using.
gcc_cv_gld_major_version=
gcc_cv_gld_minor_version=
gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
AS_VAR_SET_IF(gcc_cv_ld,, [
if test -x "$DEFAULT_LINKER"; then
gcc_cv_ld="$DEFAULT_LINKER"
elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
&& test -f ../ld/Makefile \
&& test x$build = x$host; then
gcc_cv_ld=../ld/ld-new$build_exeext
elif test -x collect-ld$build_exeext; then
# Build using linker in the current directory.
gcc_cv_ld=./collect-ld$build_exeext
elif test -x $LD_FOR_TARGET; then
gcc_cv_ld="$LD_FOR_TARGET"
else
AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
fi])
ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
AC_SUBST(ORIGINAL_LD_FOR_TARGET)
case "$ORIGINAL_LD_FOR_TARGET" in
./collect-ld | ./collect-ld$build_exeext) ;;
*) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
esac
AC_MSG_CHECKING(what linker to use)
if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
# Single tree build which includes ld. We want to prefer it
# over whatever linker top-level may have detected, since
# we'll use what we're building after installation anyway.
AC_MSG_RESULT(newly built ld)
in_tree_ld=yes
in_tree_ld_is_elf=no
if (grep 'EMUL = .*elf' ../ld/Makefile \
|| grep 'EMUL = .*linux' ../ld/Makefile \
|| grep 'EMUL = .*nacl' ../ld/Makefile \
|| grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
in_tree_ld_is_elf=yes
fi
for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.in $gcc_cv_ld_gld_srcdir/Makefile.in
do
changequote(,)dnl
gcc_cv_gld_version=`sed -n -e 's/^[ ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
if test x$gcc_cv_gld_version != x; then
break
fi
done
gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
changequote([,])dnl
else
AC_MSG_RESULT($gcc_cv_ld)
in_tree_ld=no
fi
# Figure out what nm we will be using.
gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
AS_VAR_SET_IF(gcc_cv_nm,, [
if test -f $gcc_cv_binutils_srcdir/configure.in \
&& test -f ../binutils/Makefile \
&& test x$build = x$host; then
gcc_cv_nm=../binutils/nm-new$build_exeext
elif test -x nm$build_exeext; then
gcc_cv_nm=./nm$build_exeext
elif test -x $NM_FOR_TARGET; then
gcc_cv_nm="$NM_FOR_TARGET"
else
AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
fi])
AC_MSG_CHECKING(what nm to use)
if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
# Single tree build which includes binutils.
AC_MSG_RESULT(newly built nm)
in_tree_nm=yes
else
AC_MSG_RESULT($gcc_cv_nm)
in_tree_nm=no
fi
ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
AC_SUBST(ORIGINAL_NM_FOR_TARGET)
case "$ORIGINAL_NM_FOR_TARGET" in
./nm | ./nm$build_exeext) ;;
*) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
esac
# Figure out what objdump we will be using.
AS_VAR_SET_IF(gcc_cv_objdump,, [
if test -f $gcc_cv_binutils_srcdir/configure.in \
&& test -f ../binutils/Makefile \
&& test x$build = x$host; then
# Single tree build which includes binutils.
gcc_cv_objdump=../binutils/objdump$build_exeext
elif test -x objdump$build_exeext; then
gcc_cv_objdump=./objdump$build_exeext
elif test -x $OBJDUMP_FOR_TARGET; then
gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
else
AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
fi])
AC_MSG_CHECKING(what objdump to use)
if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
# Single tree build which includes binutils.
AC_MSG_RESULT(newly built objdump)
elif test x$gcc_cv_objdump = x; then
AC_MSG_RESULT(not found)
else
AC_MSG_RESULT($gcc_cv_objdump)
fi
# Figure out what readelf we will be using.
AS_VAR_SET_IF(gcc_cv_readelf,, [
if test -f $gcc_cv_binutils_srcdir/configure.in \
&& test -f ../binutils/Makefile \
&& test x$build = x$host; then
# Single tree build which includes binutils.
gcc_cv_readelf=../binutils/readelf$build_exeext
elif test -x readelf$build_exeext; then
gcc_cv_readelf=./readelf$build_exeext
else
AC_PATH_PROG(gcc_cv_readelf, readelf)
fi])
AC_MSG_CHECKING(what readelf to use)
if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
# Single tree build which includes binutils.
AC_MSG_RESULT(newly built readelf)
elif test x$gcc_cv_readelf = x; then
AC_MSG_RESULT(not found)
else
AC_MSG_RESULT($gcc_cv_readelf)
fi
# Figure out what assembler alignment features are present.
gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
[2,6,0],,
[.balign 4
.p2align 2],,
[AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
[Define if your assembler supports .balign and .p2align.])])
gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
[2,8,0],,
[.p2align 4,,7],,
[AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
[Define if your assembler supports specifying the maximum number
of bytes to skip when using the GAS .p2align command.])])
gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
[2,8,0],,
[.literal16],,
[AC_DEFINE(HAVE_GAS_LITERAL16, 1,
[Define if your assembler supports .literal16.])])
gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
[elf,2,9,0],,
[conftest_label1: .word 0
.subsection -1
conftest_label2: .word 0
.previous],
[if test x$gcc_cv_nm != x; then
$gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
$gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
then :
else gcc_cv_as_subsection_m1=yes
fi
rm -f conftest.nm1 conftest.nm2
fi],
[AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
[Define if your assembler supports .subsection and .subsection -1 starts
emitting at the beginning of your section.])])
gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
[2,2,0],,
[ .weak foobar],,
[AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
[2,17,0],,
[ .weakref foobar, barfnot],,
[AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
[2,15,91],,
[ .SPACE $TEXT$
.NSUBSPA $CODE$,COMDAT],,
[AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
# .hidden needs to be supported in both the assembler and the linker,
# because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
# This is irritatingly difficult to feature test for; we have to check the
# date string after the version number. If we've got an in-tree
# ld, we don't know its patchlevel version, so we set the baseline at 2.13
# to be safe.
# The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
[elf,2,13,0],,
[ .hidden foobar
foobar:])
AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
[if test $in_tree_ld = yes ; then
gcc_cv_ld_hidden=no
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_hidden=yes
fi
else
changequote(,)dnl
gcc_cv_ld_hidden=yes
ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
if echo "$ld_ver" | grep GNU > /dev/null; then
ld_vers=`echo $ld_ver | sed -n \
-e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
if test 0"$ld_date" -lt 20020404; then
if test -n "$ld_date"; then
# If there was date string, but was earlier than 2002-04-04, fail
gcc_cv_ld_hidden=no
elif test -z "$ld_vers"; then
# If there was no date string nor ld version number, something is wrong
gcc_cv_ld_hidden=no
else
test -z "$ld_vers_patch" && ld_vers_patch=0
if test "$ld_vers_major" -lt 2; then
gcc_cv_ld_hidden=no
elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
gcc_cv_ld_hidden="no"
elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
gcc_cv_ld_hidden=no
fi
fi
fi
else
case "${target}" in
hppa64*-*-hpux* | ia64*-*-hpux*)
gcc_cv_ld_hidden=yes
;;
*-*-solaris2.9* | *-*-solaris2.1[0-9]*)
gcc_cv_ld_hidden=yes
;;
*)
gcc_cv_ld_hidden=no
;;
esac
fi
changequote([,])dnl
fi])
libgcc_visibility=no
AC_SUBST(libgcc_visibility)
GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
libgcc_visibility=yes
AC_DEFINE(HAVE_GAS_HIDDEN, 1,
[Define if your assembler and linker support .hidden.])
fi
AC_MSG_CHECKING(linker read-only and read-write section mixing)
gcc_cv_ld_ro_rw_mix=unknown
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_ro_rw_mix=read-write
fi
elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
echo '.section myfoosect, "a"' > conftest1.s
echo '.section myfoosect, "aw"' > conftest2.s
echo '.byte 1' >> conftest2.s
echo '.section myfoosect, "a"' > conftest3.s
echo '.byte 0' >> conftest3.s
if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
&& $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
&& $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
&& $gcc_cv_ld -shared -o conftest1.so conftest1.o \
conftest2.o conftest3.o > /dev/null 2>&1; then
gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
| sed -e '/myfoosect/!d' -e N`
if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
gcc_cv_ld_ro_rw_mix=read-only
else
gcc_cv_ld_ro_rw_mix=read-write
fi
fi
fi
changequote(,)dnl
rm -f conftest.* conftest[123].*
changequote([,])dnl
fi
if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
[Define if your linker links a mix of read-only
and read-write sections into a read-write section.])
fi
AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
# Check if we have .[us]leb128, and support symbol arithmetic with it.
gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
[elf,2,11,0],,
[ .data
.uleb128 L2 - L1
L1:
.uleb128 1280
.sleb128 -1010
L2:],
[# GAS versions before 2.11 do not support uleb128,
# despite appearing to.
# ??? There exists an elf-specific test that will crash
# the assembler. Perhaps it's better to figure out whether
# arbitrary sections are supported and try the test.
as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
if echo "$as_ver" | grep GNU > /dev/null; then
changequote(,)dnl
as_vers=`echo $as_ver | sed -n \
-e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
as_major=`expr "$as_vers" : '\([0-9]*\)'`
as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
changequote([,])dnl
if test $as_major -eq 2 && test $as_minor -lt 11
then :
else gcc_cv_as_leb128=yes
fi
fi],
[AC_DEFINE(HAVE_AS_LEB128, 1,
[Define if your assembler supports .sleb128 and .uleb128.])])
# Check if we have assembler support for unwind directives.
gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
,,
[ .text
.cfi_startproc
.cfi_offset 0, 0
.cfi_same_value 1
.cfi_def_cfa 1, 2
.cfi_escape 1, 2, 3, 4, 5
.cfi_endproc],
[case "$target" in
*-*-solaris*)
# If the linker used on Solaris (like Sun ld) isn't capable of merging
# read-only and read-write sections, we need to make sure that the
# assembler used emits read-write .eh_frame sections.
if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
if test "x$gcc_cv_objdump" != x; then
if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
gcc_cv_as_cfi_directive=no
else
gcc_cv_as_cfi_directive=yes
fi
else
# no objdump, err on the side of caution
gcc_cv_as_cfi_directive=no
fi
else
gcc_cv_as_cfi_directive=yes
fi
;;
*-*-*)
gcc_cv_as_cfi_directive=yes
;;
esac])
if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_readelf != x; then
gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
,,
[ .text
.cfi_startproc
.cfi_adjust_cfa_offset 64
.skip 512, 0
.cfi_adjust_cfa_offset 128
.cfi_endproc],
[
changequote(,)dnl
if $gcc_cv_readelf -wf conftest.o 2>/dev/null \
| grep 'DW_CFA_advance_loc[12]:[ ][ ]*512[ ]' >/dev/null; then
gcc_cv_as_cfi_advance_working=yes
fi
changequote([,])dnl
])
else
# no readelf, err on the side of caution
gcc_cv_as_cfi_advance_working=no
fi
AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
[`if test $gcc_cv_as_cfi_directive = yes \
&& test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
[Define 0/1 if your assembler supports CFI directives.])
gcc_GAS_CHECK_FEATURE([cfi personality directive],
gcc_cv_as_cfi_personality_directive, ,,
[ .text
.cfi_startproc
.cfi_personality 0, symbol
.cfi_endproc])
AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
[`if test $gcc_cv_as_cfi_personality_directive = yes;
then echo 1; else echo 0; fi`],
[Define 0/1 if your assembler supports .cfi_personality.])
gcc_GAS_CHECK_FEATURE([cfi sections directive],
gcc_cv_as_cfi_sections_directive, ,,
[ .text
.cfi_sections .debug_frame, .eh_frame
.cfi_startproc
.cfi_endproc])
AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
[`if test $gcc_cv_as_cfi_sections_directive = yes;
then echo 1; else echo 0; fi`],
[Define 0/1 if your assembler supports .cfi_sections.])
# GAS versions up to and including 2.11.0 may mis-optimize
# .eh_frame data.
gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
[elf,2,12,0],,
[ .text
.LFB1:
.4byte 0
.L1:
.4byte 0
.LFE1:
.section .eh_frame,"aw",@progbits
__FRAME_BEGIN__:
.4byte .LECIE1-.LSCIE1
.LSCIE1:
.4byte 0x0
.byte 0x1
.ascii "z\0"
.byte 0x1
.byte 0x78
.byte 0x1a
.byte 0x0
.byte 0x4
.4byte 1
.p2align 1
.LECIE1:
.LSFDE1:
.4byte .LEFDE1-.LASFDE1
.LASFDE1:
.4byte .LASFDE1-__FRAME_BEGIN__
.4byte .LFB1
.4byte .LFE1-.LFB1
.byte 0x4
.4byte .LFE1-.LFB1
.byte 0x4
.4byte .L1-.LFB1
.LEFDE1:],
[ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
cat > conftest.lit <<EOF
0000 10000000 00000000 017a0001 781a0004 .........z..x...
0010 01000000 12000000 18000000 00000000 ................
0020 08000000 04080000 0044 .........D @&t@
EOF
cat > conftest.big <<EOF
0000 00000010 00000000 017a0001 781a0004 .........z..x...
0010 00000001 00000012 00000018 00000000 ................
0020 00000008 04000000 0844 .........D @&t@
EOF
# If the assembler didn't choke, and we can objdump,
# and we got the correct data, then succeed.
# The text in the here-document typically retains its unix-style line
# endings, while the output of objdump will use host line endings.
# Therefore, use diff -b for the comparisons.
if test x$gcc_cv_objdump != x \
&& $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
| tail -3 > conftest.got \
&& { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
|| diff -b conftest.big conftest.got > /dev/null 2>&1; }
then
gcc_cv_as_eh_frame=yes
elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
gcc_cv_as_eh_frame=buggy
else
# Uh oh, what do we do now?
gcc_cv_as_eh_frame=no
fi])
if test $gcc_cv_as_eh_frame = buggy; then
AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
[Define if your assembler mis-optimizes .eh_frame data.])
fi
gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
[elf,2,12,0], [--fatal-warnings],
[.section .rodata.str, "aMS", @progbits, 1])
if test $gcc_cv_as_shf_merge = no; then
gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
[elf,2,12,0], [--fatal-warnings],
[.section .rodata.str, "aMS", %progbits, 1])
fi
AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
[`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
[Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
[elf,2,16,0], [--fatal-warnings],
[.section .text,"axG",@progbits,.foo,comdat])
if test $gcc_cv_as_comdat_group = yes; then
gcc_cv_as_comdat_group_percent=no
else
gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
[elf,2,16,0], [--fatal-warnings],
[.section .text,"axG",%progbits,.foo,comdat])
fi
if test $in_tree_ld != yes && test x"$ld_vers" != x; then
comdat_group=yes
if test 0"$ld_date" -lt 20050308; then
if test -n "$ld_date"; then
# If there was date string, but was earlier than 2005-03-08, fail
comdat_group=no
elif test "$ld_vers_major" -lt 2; then
comdat_group=no
elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
comdat_group=no
fi
fi
else
# assume linkers other than GNU ld don't support COMDAT group
comdat_group=no
fi
if test $comdat_group = no; then
gcc_cv_as_comdat_group=no
gcc_cv_as_comdat_group_percent=no
fi
AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
[`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
[Define 0/1 if your assembler and linker support COMDAT groups.])
# Thread-local storage - the check is heavily parameterized.
conftest_s=
tls_first_major=
tls_first_minor=
tls_as_opt=
case "$target" in
changequote(,)dnl
alpha*-*-*)
conftest_s='
.section ".tdata","awT",@progbits
foo: .long 25
.text
ldq $27,__tls_get_addr($29) !literal!1
lda $16,foo($29) !tlsgd!1
jsr $26,($27),__tls_get_addr !lituse_tlsgd!1
ldq $27,__tls_get_addr($29) !literal!2
lda $16,foo($29) !tlsldm!2
jsr $26,($27),__tls_get_addr !lituse_tlsldm!2
ldq $1,foo($29) !gotdtprel
ldah $2,foo($29) !dtprelhi
lda $3,foo($2) !dtprello
lda $4,foo($29) !dtprel
ldq $1,foo($29) !gottprel
ldah $2,foo($29) !tprelhi
lda $3,foo($2) !tprello
lda $4,foo($29) !tprel'
tls_first_major=2
tls_first_minor=13
tls_as_opt=--fatal-warnings
;;
cris-*-*|crisv32-*-*)
conftest_s='
.section ".tdata","awT",@progbits
x: .long 25
.text
move.d x:IE,$r10
nop'
tls_first_major=2
tls_first_minor=20
tls_as_opt=--fatal-warnings
;;
frv*-*-*)
conftest_s='
.section ".tdata","awT",@progbits
x: .long 25
.text
call #gettlsoff(x)'
tls_first_major=2
tls_first_minor=14
;;
hppa*-*-linux*)
conftest_s='
t1: .reg %r20
t2: .reg %r21
gp: .reg %r19
.section ".tdata","awT",@progbits
foo: .long 25
.text
.align 4
addil LT%foo-$tls_gdidx$,gp
ldo RT%foo-$tls_gdidx$(%r1),%arg0
b __tls_get_addr
nop
addil LT%foo-$tls_ldidx$,gp
b __tls_get_addr
ldo RT%foo-$tls_ldidx$(%r1),%arg0
addil LR%foo-$tls_dtpoff$,%ret0
ldo RR%foo-$tls_dtpoff$(%r1),%t1
mfctl %cr27,%t1
addil LT%foo-$tls_ieoff$,gp
ldw RT%foo-$tls_ieoff$(%r1),%t2
add %t1,%t2,%t3
mfctl %cr27,%t1
addil LR%foo-$tls_leoff$,%t1
ldo RR%foo-$tls_leoff$(%r1),%t2'
tls_first_major=2
tls_first_minor=15
tls_as_opt=--fatal-warnings
;;
arm*-*-*)
conftest_s='
.section ".tdata","awT",%progbits
foo: .long 25
.text
.word foo(gottpoff)
.word foo(tpoff)
.word foo(tlsgd)
.word foo(tlsldm)
.word foo(tlsldo)'
tls_first_major=2
tls_first_minor=17
;;
i[34567]86*-*-*)
conftest_s='
.section ".tdata","awT",@progbits
foo: .long 25
.text
movl %gs:0, %eax
leal foo@TLSGD(,%ebx,1), %eax
leal foo@TLSLDM(%ebx), %eax
leal foo@DTPOFF(%eax), %edx
movl foo@GOTTPOFF(%ebx), %eax
subl foo@GOTTPOFF(%ebx), %eax
addl foo@GOTNTPOFF(%ebx), %eax
movl foo@INDNTPOFF, %eax
movl $foo@TPOFF, %eax
subl $foo@TPOFF, %eax
leal foo@NTPOFF(%ecx), %eax'
tls_first_major=2
tls_first_minor=14
tls_as_opt=--fatal-warnings
;;
x86_64-*-*)
conftest_s='
.section ".tdata","awT",@progbits
foo: .long 25
.text
movq %fs:0, %rax
leaq foo@TLSGD(%rip), %rdi
leaq foo@TLSLD(%rip), %rdi
leaq foo@DTPOFF(%rax), %rdx
movq foo@GOTTPOFF(%rip), %rax
movq $foo@TPOFF, %rax'
tls_first_major=2
tls_first_minor=14
tls_as_opt=--fatal-warnings
;;
ia64-*-*)
conftest_s='
.section ".tdata","awT",@progbits
foo: data8 25
.text
addl r16 = @ltoff(@dtpmod(foo#)), gp
addl r17 = @ltoff(@dtprel(foo#)), gp
addl r18 = @ltoff(@tprel(foo#)), gp
addl r19 = @dtprel(foo#), gp
adds r21 = @dtprel(foo#), r13
movl r23 = @dtprel(foo#)
addl r20 = @tprel(foo#), gp
adds r22 = @tprel(foo#), r13
movl r24 = @tprel(foo#)'
tls_first_major=2
tls_first_minor=13
tls_as_opt=--fatal-warnings
;;
mips*-*-*)
conftest_s='
.section .tdata,"awT",@progbits
x:
.word 2
.text
addiu $4, $28, %tlsgd(x)
addiu $4, $28, %tlsldm(x)
lui $4, %dtprel_hi(x)
addiu $4, $4, %dtprel_lo(x)
lw $4, %gottprel(x)($28)
lui $4, %tprel_hi(x)
addiu $4, $4, %tprel_lo(x)'
tls_first_major=2
tls_first_minor=16
tls_as_opt='-32 --fatal-warnings'
;;
powerpc-*-*)
conftest_s='
.section ".tdata","awT",@progbits
.align 2
ld0: .space 4
ld1: .space 4
x1: .space 4
x2: .space 4
x3: .space 4
.text
addi 3,31,ld0@got@tlsgd
bl __tls_get_addr
addi 3,31,x1@got@tlsld
bl __tls_get_addr
addi 9,3,x1@dtprel
addis 9,3,x2@dtprel@ha
addi 9,9,x2@dtprel@l
lwz 9,x3@got@tprel(31)
add 9,9,x@tls
addi 9,2,x1@tprel
addis 9,2,x2@tprel@ha
addi 9,9,x2@tprel@l'
tls_first_major=2
tls_first_minor=14
tls_as_opt="-a32 --fatal-warnings"
;;
powerpc64-*-*)
conftest_s='
.section ".tdata","awT",@progbits
.align 3
ld0: .space 8
ld1: .space 8
x1: .space 8
x2: .space 8
x3: .space 8
.text
addi 3,2,ld0@got@tlsgd
bl .__tls_get_addr
nop
addi 3,2,ld1@toc
bl .__tls_get_addr
nop
addi 3,2,x1@got@tlsld
bl .__tls_get_addr
nop
addi 9,3,x1@dtprel
bl .__tls_get_addr
nop
addis 9,3,x2@dtprel@ha
addi 9,9,x2@dtprel@l
bl .__tls_get_addr
nop
ld 9,x3@got@dtprel(2)
add 9,9,3
bl .__tls_get_addr
nop'
tls_first_major=2
tls_first_minor=14
tls_as_opt="-a64 --fatal-warnings"
;;
s390-*-*)
conftest_s='
.section ".tdata","awT",@progbits
foo: .long 25
.text
.long foo@TLSGD
.long foo@TLSLDM
.long foo@DTPOFF
.long foo@NTPOFF
.long foo@GOTNTPOFF
.long foo@INDNTPOFF
l %r1,foo@GOTNTPOFF(%r12)
l %r1,0(%r1):tls_load:foo
bas %r14,0(%r1,%r13):tls_gdcall:foo
bas %r14,0(%r1,%r13):tls_ldcall:foo'
tls_first_major=2
tls_first_minor=14
tls_as_opt="-m31 --fatal-warnings"
;;
s390x-*-*)
conftest_s='
.section ".tdata","awT",@progbits
foo: .long 25
.text
.quad foo@TLSGD
.quad foo@TLSLDM
.quad foo@DTPOFF
.quad foo@NTPOFF
.quad foo@GOTNTPOFF
lg %r1,foo@GOTNTPOFF(%r12)
larl %r1,foo@INDNTPOFF
brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo
brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo'
tls_first_major=2
tls_first_minor=14
tls_as_opt="-m64 -Aesame --fatal-warnings"
;;
sh-*-* | sh[34]-*-*)
conftest_s='
.section ".tdata","awT",@progbits
foo: .long 25
.text
.long foo@TLSGD
.long foo@TLSLDM
.long foo@DTPOFF
.long foo@GOTTPOFF
.long foo@TPOFF'
tls_first_major=2
tls_first_minor=13
tls_as_opt=--fatal-warnings
;;
sparc*-*-*)
case "$target" in
sparc*-sun-solaris2.[56789]*)
# TLS was introduced in the Solaris 9 4/04 release but
# we do not enable it by default on Solaris 9 either.
if test "x$enable_tls" = xyes ; then
on_solaris=yes
else
enable_tls=no;
fi
;;
sparc*-sun-solaris2.*)
on_solaris=yes
;;
*)
on_solaris=no
;;
esac
if test x$on_solaris = xyes && test x$gas_flag = xno; then
conftest_s='
.section ".tdata",#alloc,#write,#tls
foo: .long 25
.text
sethi %tgd_hi22(foo), %o0
add %o0, %tgd_lo10(foo), %o1
add %l7, %o1, %o0, %tgd_add(foo)
call __tls_get_addr, %tgd_call(foo)
sethi %tldm_hi22(foo), %l1
add %l1, %tldm_lo10(foo), %l2
add %l7, %l2, %o0, %tldm_add(foo)
call __tls_get_addr, %tldm_call(foo)
sethi %tldo_hix22(foo), %l3
xor %l3, %tldo_lox10(foo), %l4
add %o0, %l4, %l5, %tldo_add(foo)
sethi %tie_hi22(foo), %o3
add %o3, %tie_lo10(foo), %o3
ld [%l7 + %o3], %o2, %tie_ld(foo)
add %g7, %o2, %o4, %tie_add(foo)
sethi %tle_hix22(foo), %l1
xor %l1, %tle_lox10(foo), %o5
ld [%g7 + %o5], %o1'
tls_first_major=0
tls_first_minor=0
else
conftest_s='
.section ".tdata","awT",@progbits
foo: .long 25
.text
sethi %tgd_hi22(foo), %o0
add %o0, %tgd_lo10(foo), %o1
add %l7, %o1, %o0, %tgd_add(foo)
call __tls_get_addr, %tgd_call(foo)
sethi %tldm_hi22(foo), %l1
add %l1, %tldm_lo10(foo), %l2
add %l7, %l2, %o0, %tldm_add(foo)
call __tls_get_addr, %tldm_call(foo)
sethi %tldo_hix22(foo), %l3
xor %l3, %tldo_lox10(foo), %l4
add %o0, %l4, %l5, %tldo_add(foo)
sethi %tie_hi22(foo), %o3
add %o3, %tie_lo10(foo), %o3
ld [%l7 + %o3], %o2, %tie_ld(foo)
add %g7, %o2, %o4, %tie_add(foo)
sethi %tle_hix22(foo), %l1
xor %l1, %tle_lox10(foo), %o5
ld [%g7 + %o5], %o1'
tls_first_major=2
tls_first_minor=14
tls_as_opt="-32 --fatal-warnings"
fi
;;
xtensa*-*-*)
conftest_s='
.section ".tdata","awT",@progbits
foo: .long 25
.text
movi a8, foo@TLSFUNC
movi a10, foo@TLSARG
callx8.tls a8, foo@TLSCALL'
tls_first_major=2
tls_first_minor=19
;;
changequote([,])dnl
esac
set_have_as_tls=no
if test "x$enable_tls" = xno ; then
: # TLS explicitly disabled.
elif test "x$enable_tls" = xyes ; then
set_have_as_tls=yes # TLS explicitly enabled.
elif test -z "$tls_first_major"; then
: # If we don't have a check, assume no support.
else
gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
[$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
[set_have_as_tls=yes])
fi
if test $set_have_as_tls = yes ; then
AC_DEFINE(HAVE_AS_TLS, 1,
[Define if your assembler supports thread-local storage.])
fi
# Target-specific assembler checks.
AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
gcc_cv_ld_static_dynamic=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
gcc_cv_ld_static_dynamic=yes
fi
elif test x$gcc_cv_ld != x; then
# Check if linker supports -Bstatic/-Bdynamic option
if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
&& $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
gcc_cv_ld_static_dynamic=yes
fi
fi
if test x"$gcc_cv_ld_static_dynamic" = xyes; then
AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
[Define if your linker supports -Bstatic/-Bdynamic option.])
fi
AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
if test x"$demangler_in_ld" = xyes; then
AC_MSG_CHECKING(linker --demangle support)
gcc_cv_ld_demangle=no
if test $in_tree_ld = yes; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
gcc_cv_ld_demangle=yes
fi
elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
# Check if the GNU linker supports --demangle option
if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
gcc_cv_ld_demangle=yes
fi
fi
if test x"$gcc_cv_ld_demangle" = xyes; then
AC_DEFINE(HAVE_LD_DEMANGLE, 1,
[Define if your linker supports --demangle option.])
fi
AC_MSG_RESULT($gcc_cv_ld_demangle)
fi
case "$target" in
# All TARGET_ABI_OSF targets.
alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
gcc_GAS_CHECK_FEATURE([explicit relocation support],
gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
[ .set nomacro
.text
extbl $3, $2, $3 !lituse_bytoff!1
ldq $2, a($29) !literal!1
ldq $4, b($29) !literal!2
ldq_u $3, 0($2) !lituse_base!1
ldq $27, f($29) !literal!5
jsr $26, ($27), f !lituse_jsr!5
ldah $29, 0($26) !gpdisp!3
lda $0, c($29) !gprel
ldah $1, d($29) !gprelhigh
lda $1, d($1) !gprellow
lda $29, 0($29) !gpdisp!3],,
[AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
[Define if your assembler supports explicit relocations.])])
gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
[ .set nomacro
.text
ldq $27, a($29) !literal!1
jsr $26, ($27), a !lituse_jsrdirect!1],,
[AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
[Define if your assembler supports the lituse_jsrdirect relocation.])])
;;
cris-*-*)
gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
gcc_cv_as_cris_no_mul_bug,[2,15,91],
[-no-mul-bug-abort], [.text],,
[AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
[Define if your assembler supports the -no-mul-bug-abort option.])])
;;
sparc*-*-*)
gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
[.register %g2, #scratch],,
[AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
[Define if your assembler supports .register.])])
gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
[-relax], [.text],,
[AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
[Define if your assembler supports -relax option.])])
gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
gcc_cv_as_sparc_ua_pcrel,,
[-K PIC],
[.text
foo:
nop
.data
.align 4
.byte 0
.uaword %r_disp32(foo)],
[if test x$gcc_cv_ld != x \
&& $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
gcc_cv_as_sparc_ua_pcrel=yes
fi
rm -f conftest],
[AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
[Define if your assembler and linker support unaligned PC relative relocs.])
gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
gcc_cv_as_sparc_ua_pcrel_hidden,,
[-K PIC],
[.data
.align 4
.byte 0x31
.uaword %r_disp32(foo)
.byte 0x32, 0x33, 0x34
.global foo
.hidden foo
foo:
.skip 4],
[if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
&& $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
&& $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
| grep ' 31000000 07323334' > /dev/null 2>&1; then
if $gcc_cv_objdump -R conftest 2> /dev/null \
| grep 'DISP32' > /dev/null 2>&1; then
:
else
gcc_cv_as_sparc_ua_pcrel_hidden=yes
fi
fi
rm -f conftest],
[AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
[Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
]) # unaligned pcrel relocs
gcc_GAS_CHECK_FEATURE([offsetable %lo()],
gcc_cv_as_sparc_offsetable_lo10,,
[-xarch=v9],
[.text
or %g1, %lo(ab) + 12, %g1
or %g1, %lo(ab + 12), %g1],
[if test x$gcc_cv_objdump != x \
&& $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
| grep ' 82106000 82106000' > /dev/null 2>&1; then
gcc_cv_as_sparc_offsetable_lo10=yes
fi],
[AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
[Define if your assembler supports offsetable %lo().])])
;;
changequote(,)dnl
i[34567]86*-*-* | x86_64-*-*)
changequote([,])dnl
case $target_os in
cygwin* | pe | mingw32*)
# Used for DWARF 2 in PE
gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
gcc_cv_as_ix86_pe_secrel32,
[2,15,91],,
[.text
foo: nop
.data
.secrel32 foo],
[if test x$gcc_cv_ld != x \
&& $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
gcc_cv_as_ix86_pe_secrel32=yes
fi
rm -f conftest],
[AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
[Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
;;
esac
gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
gcc_cv_as_ix86_filds_fists,
[2,9,0],, [filds mem; fists mem],,
[AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
[Define if your assembler uses the new HImode fild and fist notation.])])
gcc_GAS_CHECK_FEATURE([cmov syntax],
gcc_cv_as_ix86_cmov_sun_syntax,,,
[cmovl.l %edx, %eax],,
[AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
[Define if your assembler supports the Sun syntax for cmov.])])
gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
gcc_cv_as_ix86_ffreep,,,
[ffreep %st(1)],,
[AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
[Define if your assembler supports the ffreep mnemonic.])])
gcc_GAS_CHECK_FEATURE([sahf mnemonic],
gcc_cv_as_ix86_sahf,,,
[sahf],,
[AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
[Define if your assembler supports the sahf mnemonic.])])
gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
gcc_cv_as_ix86_diff_sect_delta,,,
[.section .rodata
.L1:
.long .L2-.L1
.long .L3-.L1
.text
.L3: nop
.L2: nop],,
[AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
[Define if your assembler supports the subtraction of symbols in different sections.])])
# This one is used unconditionally by i386.[ch]; it is to be defined
# to 1 if the feature is present, 0 otherwise.
gcc_GAS_CHECK_FEATURE([GOTOFF in data],
gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
[ .text
.L0:
nop
.data
.long .L0@GOTOFF])
AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
[`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
[Define true if the assembler supports '.long foo@GOTOFF'.])
;;
ia64*-*-*)
gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
[ .text
addl r15 = @ltoffx(x#), gp
;;
ld8.mov r16 = [[r15]], x#],,
[AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
[Define if your assembler supports ltoffx and ldxmov relocations.])])
;;
powerpc*-*-*)
case $target in
*-*-aix*) conftest_s=' .machine "pwr5"
.csect .text[[PR]]
mfcr 3,128';;
*-*-darwin*)
gcc_GAS_CHECK_FEATURE([.machine directive support],
gcc_cv_as_machine_directive,,,
[ .machine ppc7400])
if test x$gcc_cv_as_machine_directive != xyes; then
echo "*** This target requires an assembler supporting \".machine\"" >&2
echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
test x$build = x$target && exit 1
fi
conftest_s=' .text
mfcr r3,128';;
*) conftest_s=' .machine power4
.text
mfcr 3,128';;
esac
gcc_GAS_CHECK_FEATURE([mfcr field support],
gcc_cv_as_powerpc_mfcrf, [2,14,0],,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_MFCRF, 1,
[Define if your assembler supports mfcr field.])])
case $target in
*-*-aix*) conftest_s=' .machine "pwr5"
.csect .text[[PR]]
popcntb 3,3';;
*) conftest_s=' .machine power5
.text
popcntb 3,3';;
esac
gcc_GAS_CHECK_FEATURE([popcntb support],
gcc_cv_as_powerpc_popcntb, [2,17,0],,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_POPCNTB, 1,
[Define if your assembler supports popcntb field.])])
case $target in
*-*-aix*) conftest_s=' .machine "pwr5x"
.csect .text[[PR]]
frin 1,1';;
*) conftest_s=' .machine power5
.text
frin 1,1';;
esac
gcc_GAS_CHECK_FEATURE([fp round support],
gcc_cv_as_powerpc_fprnd, [2,17,0],,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_FPRND, 1,
[Define if your assembler supports fprnd.])])
case $target in
*-*-aix*) conftest_s=' .machine "pwr6"
.csect .text[[PR]]
mffgpr 1,3';;
*) conftest_s=' .machine power6
.text
mffgpr 1,3';;
esac
gcc_GAS_CHECK_FEATURE([move fp gpr support],
gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_MFPGPR, 1,
[Define if your assembler supports mffgpr and mftgpr.])])
case $target in
*-*-aix*) conftest_s=' .csect .text[[PR]]
LCF..0:
addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
*-*-darwin*)
conftest_s=' .text
LCF0:
addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
*) conftest_s=' .text
.LCF0:
addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
esac
gcc_GAS_CHECK_FEATURE([rel16 relocs],
gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_REL16, 1,
[Define if your assembler supports R_PPC_REL16 relocs.])])
case $target in
*-*-aix*) conftest_s=' .machine "pwr6"
.csect .text[[PR]]
cmpb 3,4,5';;
*) conftest_s=' .machine power6
.text
cmpb 3,4,5';;
esac
gcc_GAS_CHECK_FEATURE([compare bytes support],
gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_CMPB, 1,
[Define if your assembler supports cmpb.])])
case $target in
*-*-aix*) conftest_s=' .machine "pwr6"
.csect .text[[PR]]
dadd 1,2,3';;
*) conftest_s=' .machine power6
.text
dadd 1,2,3';;
esac
gcc_GAS_CHECK_FEATURE([decimal float support],
gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_DFP, 1,
[Define if your assembler supports DFP instructions.])])
case $target in
*-*-aix*) conftest_s=' .machine "pwr7"
.csect .text[[PR]]
lxvd2x 1,2,3';;
*) conftest_s=' .machine power7
.text
lxvd2x 1,2,3';;
esac
gcc_GAS_CHECK_FEATURE([vector-scalar support],
gcc_cv_as_powerpc_vsx, [9,99,0], -a32,
[$conftest_s],,
[AC_DEFINE(HAVE_AS_VSX, 1,
[Define if your assembler supports VSX instructions.])])
gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
[.gnu_attribute 4,1],,
[AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
[Define if your assembler supports .gnu_attribute.])])
;;
mips*-*-*)
gcc_GAS_CHECK_FEATURE([explicit relocation support],
gcc_cv_as_mips_explicit_relocs, [2,14,0],,
[ lw $4,%gp_rel(foo)($4)],,
[if test x$target_cpu_default = x
then target_cpu_default=MASK_EXPLICIT_RELOCS
else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
fi])
gcc_GAS_CHECK_FEATURE([-mno-shared support],
gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
[AC_DEFINE(HAVE_AS_NO_SHARED, 1,
[Define if the assembler understands -mno-shared.])])
gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
gcc_cv_as_mips_gnu_attribute, [2,18,0],,
[.gnu_attribute 4,1],,
[AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
[Define if your assembler supports .gnu_attribute.])])
gcc_GAS_CHECK_FEATURE([.dtprelword support],
gcc_cv_as_mips_dtprelword, [2,18,0],,
[.section .tdata,"awT",@progbits
x:
.word 2
.text
.dtprelword x+0x8000],,
[AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
[Define if your assembler supports .dtprelword.])])
;;
esac
# Mips and HP-UX need the GNU assembler.
# Linux on IA64 might be able to use the Intel assembler.
case "$target" in
mips*-*-* | *-*-hpux* )
if test x$gas_flag = xyes \
|| test x"$host" != x"$build" \
|| test ! -x "$gcc_cv_as" \
|| "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
:
else
echo "*** This configuration requires the GNU assembler" >&2
exit 1
fi
;;
esac
# ??? Not all targets support dwarf2 debug_line, even within a version
# of gas. Moreover, we need to emit a valid instruction to trigger any
# info to the output file. So, as supported targets are added to gas 2.11,
# add some instruction here to (also) show we expect this might work.
# ??? Once 2.11 is released, probably need to add first known working
# version to the per-target configury.
case "$target" in
i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
| x86_64*-*-* | hppa*-*-* | arm*-*-* \
| xstormy16*-*-* | cris-*-* | crisv32-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
| spu-*-* | fido*-*-* | m32c-*-*)
insn="nop"
;;
ia64*-*-* | s390*-*-*)
insn="nop 0"
;;
mmix-*-*)
insn="swym 0"
;;
esac
if test x"$insn" != x; then
conftest_s="\
.file 1 \"conftest.s\"
.loc 1 3 0
$insn"
gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
gcc_cv_as_dwarf2_debug_line,
[elf,2,11,0],, [$conftest_s],
[if test x$gcc_cv_objdump != x \
&& $gcc_cv_objdump -h conftest.o 2> /dev/null \
| grep debug_line > /dev/null 2>&1; then
gcc_cv_as_dwarf2_debug_line=yes
fi])
# The .debug_line file table must be in the exact order that
# we specified the files, since these indices are also used
# by DW_AT_decl_file. Approximate this test by testing if
# the assembler bitches if the same index is assigned twice.
gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
gcc_cv_as_dwarf2_file_buggy,,,
[ .file 1 "foo.s"
.file 1 "bar.s"])
if test $gcc_cv_as_dwarf2_debug_line = yes \
&& test $gcc_cv_as_dwarf2_file_buggy = no; then
AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
[Define if your assembler supports dwarf2 .file/.loc directives,
and preserves file table indices exactly as given.])
fi
gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
gcc_cv_as_gdwarf2_flag,
[elf,2,11,0], [--gdwarf2], [$insn],,
[AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
[Define if your assembler supports the --gdwarf2 option.])])
gcc_GAS_CHECK_FEATURE([--gstabs option],
gcc_cv_as_gstabs_flag,
[elf,2,11,0], [--gstabs], [$insn],
[# The native Solaris 9/Intel assembler doesn't understand --gstabs
# and warns about it, but still exits successfully. So check for
# this.
if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
then :
else gcc_cv_as_gstabs_flag=yes
fi],
[AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
[Define if your assembler supports the --gstabs option.])])
gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
gcc_cv_as_debug_prefix_map_flag,
[2,18,0], [--debug-prefix-map /a=/b], [$insn],,
[AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
[Define if your assembler supports the --debug-prefix-map option.])])
fi
gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
,,
[.lcomm bar,4,16],,
[AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
[Define if your assembler supports .lcomm with an alignment field.])])
AC_CACHE_CHECK([assembler for tolerance to line number 0],
[gcc_cv_as_line_zero],
[gcc_cv_as_line_zero=no
if test $in_tree_gas = yes; then
gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
elif test "x$gcc_cv_as" != x; then
{ echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
test "x`cat conftest.out`" = x
then
gcc_cv_as_line_zero=yes
else
echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
cat conftest.s >&AS_MESSAGE_LOG_FD
echo "configure: error output was" >&AS_MESSAGE_LOG_FD
cat conftest.out >&AS_MESSAGE_LOG_FD
fi
rm -f conftest.o conftest.s conftest.out
fi])
if test "x$gcc_cv_as_line_zero" = xyes; then
AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
[Define if the assembler won't complain about a line such as # 0 "" 2.])
fi
AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
gcc_cv_ld_eh_frame_hdr=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_eh_frame_hdr=yes
fi
elif test x$gcc_cv_ld != x; then
# Check if linker supports --eh-frame-hdr option
if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
gcc_cv_ld_eh_frame_hdr=yes
fi
fi
GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
[Define if your linker supports --eh-frame-hdr option.])
fi
AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
AC_MSG_CHECKING(linker position independent executable support)
gcc_cv_ld_pie=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_pie=yes
fi
elif test x$gcc_cv_ld != x; then
# Check if linker supports -pie option
if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
gcc_cv_ld_pie=yes
fi
fi
if test x"$gcc_cv_ld_pie" = xyes; then
AC_DEFINE(HAVE_LD_PIE, 1,
[Define if your linker supports -pie option.])
fi
AC_MSG_RESULT($gcc_cv_ld_pie)
AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
gcc_cv_ld_eh_gc_sections=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_eh_gc_sections=yes
fi
elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
cat > conftest.s <<EOF
.section .text
.globl _start
.type _start, @function
_start:
.long foo
.size _start, .-_start
.section .text.foo,"ax",@progbits
.type foo, @function
foo:
.long 0
.size foo, .-foo
.section .gcc_except_table.foo,"a",@progbits
.L0:
.long 0
.section .eh_frame,"a",@progbits
.long .L0
EOF
if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
| grep "gc-sections option ignored" > /dev/null; then
gcc_cv_ld_eh_gc_sections=no
elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
gcc_cv_ld_eh_gc_sections=yes
# If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
if test x$gcc_cv_as_comdat_group != xyes; then
gcc_cv_ld_eh_gc_sections=no
cat > conftest.s <<EOF
.section .text
.globl _start
.type _start, @function
_start:
.long foo
.size _start, .-_start
.section .gnu.linkonce.t.foo,"ax",@progbits
.type foo, @function
foo:
.long 0
.size foo, .-foo
.section .gcc_except_table.foo,"a",@progbits
.L0:
.long 0
.section .eh_frame,"a",@progbits
.long .L0
EOF
if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
| grep "gc-sections option ignored" > /dev/null; then
gcc_cv_ld_eh_gc_sections=no
elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
gcc_cv_ld_eh_gc_sections=yes
fi
fi
fi
fi
fi
rm -f conftest.s conftest.o conftest
fi
case "$target" in
hppa*-*-linux*)
# ??? This apparently exposes a binutils bug with PC-relative relocations.
gcc_cv_ld_eh_gc_sections=no
;;
esac
if test x$gcc_cv_ld_eh_gc_sections = xyes; then
AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
[Define if your linker supports garbage collection of
sections in presence of EH frames.])
fi
AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
# --------
# UNSORTED
# --------
AC_CACHE_CHECK(linker --as-needed support,
gcc_cv_ld_as_needed,
[gcc_cv_ld_as_needed=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_as_needed=yes
fi
elif test x$gcc_cv_ld != x; then
# Check if linker supports --as-needed and --no-as-needed options
if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
gcc_cv_ld_as_needed=yes
fi
fi
])
if test x"$gcc_cv_ld_as_needed" = xyes; then
AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
[Define if your linker supports --as-needed and --no-as-needed options.])
fi
case "$target:$tm_file" in
powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
AC_CACHE_CHECK(linker support for omitting dot symbols,
gcc_cv_ld_no_dot_syms,
[gcc_cv_ld_no_dot_syms=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
gcc_cv_ld_no_dot_syms=yes
fi
elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
cat > conftest1.s <<EOF
.text
bl .foo
EOF
cat > conftest2.s <<EOF
.section ".opd","aw"
.align 3
.globl foo
.type foo,@function
foo:
.quad .LEfoo,.TOC.@tocbase,0
.text
.LEfoo:
blr
.size foo,.-.LEfoo
EOF
if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
&& $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
&& $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
gcc_cv_ld_no_dot_syms=yes
fi
rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
fi
])
if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
[Define if your PowerPC64 linker only needs function descriptor syms.])
fi
;;
esac
AC_CACHE_CHECK(linker --build-id support,
gcc_cv_ld_buildid,
[gcc_cv_ld_buildid=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a \
"$gcc_cv_gld_minor_version" -ge 18 -o \
"$gcc_cv_gld_major_version" -gt 2 \
&& test $in_tree_ld_is_elf = yes; then
gcc_cv_ld_buildid=yes
fi
elif test x$gcc_cv_ld != x; then
if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
gcc_cv_ld_buildid=yes
fi
fi])
if test x"$gcc_cv_ld_buildid" = xyes; then
AC_DEFINE(HAVE_LD_BUILDID, 1,
[Define if your linker supports --build-id.])
fi
AC_ARG_ENABLE(linker-build-id,
[ --enable-linker-build-id
compiler will always pass --build-id to linker],
[],
enable_linker_build_id=no)
if test x"$enable_linker_build_id" = xyes; then
if test x"$gcc_cv_ld_buildid" = xyes; then
AC_DEFINE(ENABLE_LD_BUILDID, 1,
[Define if gcc should always pass --build-id to linker.])
else
AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
fi
fi
AC_CACHE_CHECK(linker --sysroot support,
gcc_cv_ld_sysroot,
[gcc_cv_ld_sysroot=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
gcc_cv_ld_sysroot=yes
fi
elif test x$gcc_cv_ld != x; then
if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
gcc_cv_ld_sysroot=yes
fi
fi])
if test x"$gcc_cv_ld_sysroot" = xyes; then
AC_DEFINE(HAVE_LD_SYSROOT, 1,
[Define if your linker supports --sysroot.])
fi
if test x$with_sysroot = x && test x$host = x$target \
&& test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
&& test "$prefix" != "NONE"; then
AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
[Define to PREFIX/include if cpp should also search that directory.])
fi
# Test for stack protector support in target C library.
AC_CACHE_CHECK(__stack_chk_fail in target C library,
gcc_cv_libc_provides_ssp,
[gcc_cv_libc_provides_ssp=no
case "$target" in
*-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
if test "x$with_sysroot" = x; then
glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
elif test "x$with_build_sysroot" != "x"; then
glibc_header_dir="${with_build_sysroot}/usr/include"
elif test "x$with_sysroot" = xyes; then
glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
else
glibc_header_dir="${with_sysroot}/usr/include"
fi
else
glibc_header_dir=/usr/include
fi
# glibc 2.4 and later provides __stack_chk_fail and
# either __stack_chk_guard, or TLS access to stack guard canary.
if test -f $glibc_header_dir/features.h \
&& $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \
$glibc_header_dir/features.h > /dev/null; then
if $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+([1-9][0-9]|[3-9])' \
$glibc_header_dir/features.h > /dev/null; then
gcc_cv_libc_provides_ssp=yes
elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC__[ ]+2' \
$glibc_header_dir/features.h > /dev/null \
&& $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+([1-9][0-9]|[4-9])' \
$glibc_header_dir/features.h > /dev/null; then
gcc_cv_libc_provides_ssp=yes
elif $EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC__[ ]+1' \
$glibc_header_dir/features.h > /dev/null && \
test -f $glibc_header_dir/bits/uClibc_config.h && \
$EGREP '^@<:@ @:>@*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \
$glibc_header_dir/bits/uClibc_config.h > /dev/null; then
gcc_cv_libc_provides_ssp=yes
fi
fi
;;
*-*-gnu*)
# Avoid complicated tests (see
# <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
# simply assert that glibc does provide this, which is true for all
# realistically usable GNU/Hurd configurations.
gcc_cv_libc_provides_ssp=yes;;
*-*-darwin*)
AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
[echo "no __stack_chk_fail on this target"])
;;
*) gcc_cv_libc_provides_ssp=no ;;
esac])
if test x$gcc_cv_libc_provides_ssp = xyes; then
AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
[Define if your target C library provides stack protector support])
fi
# Check if TFmode long double should be used by default or not.
# Some glibc targets used DFmode long double, but with glibc 2.4
# and later they can use TFmode.
case "$target" in
powerpc*-*-linux* | \
powerpc*-*-gnu* | \
sparc*-*-linux* | \
s390*-*-linux* | \
alpha*-*-linux*)
AC_ARG_WITH(long-double-128,
[ --with-long-double-128 Use 128-bit long double by default.],
gcc_cv_target_ldbl128="$with_long_double_128",
[gcc_cv_target_ldbl128=no
if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
if test "x$with_sysroot" = x; then
glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
elif test "x$with_build_sysroot" != "x"; then
glibc_header_dir="${with_build_sysroot}/usr/include"
elif test "x$with_sysroot" = xyes; then
glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
else
glibc_header_dir="${with_sysroot}/usr/include"
fi
else
glibc_header_dir=/usr/include
fi
changequote(,)dnl
grep '^[ ]*#[ ]*define[ ][ ]*__LONG_DOUBLE_MATH_OPTIONAL' \
$glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
&& gcc_cv_target_ldbl128=yes
changequote([,])dnl
])
;;
esac
if test x$gcc_cv_target_ldbl128 = xyes; then
AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
[Define if TFmode long double should be the default])
fi
# Find out what GC implementation we want, or may, use.
AC_ARG_WITH(gc,
[ --with-gc={page,zone} choose the garbage collection mechanism to use
with the compiler],
[case "$withval" in
page)
GGC=ggc-$withval
;;
zone)
GGC=ggc-$withval
AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
;;
*)
AC_MSG_ERROR([$withval is an invalid option to --with-gc])
;;
esac],
[GGC=ggc-page])
AC_SUBST(GGC)
echo "Using $GGC for garbage collection."
# Use the system's zlib library.
zlibdir=-L../zlib
zlibinc="-I\$(srcdir)/../zlib"
AC_ARG_WITH(system-zlib,
[ --with-system-zlib use installed libz],
zlibdir=
zlibinc=
)
AC_SUBST(zlibdir)
AC_SUBST(zlibinc)
dnl Very limited version of automake's enable-maintainer-mode
AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
dnl maintainer-mode is disabled by default
AC_ARG_ENABLE(maintainer-mode,
[ --enable-maintainer-mode
enable make rules and dependencies not useful
(and sometimes confusing) to the casual installer],
maintainer_mode=$enableval,
maintainer_mode=no)
AC_MSG_RESULT($maintainer_mode)