711 lines
22 KiB
Text
711 lines
22 KiB
Text
dnl Process this file with autoconf to produce a configure script.
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dnl
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dnl Copyright (C) 2006-2022 Free Software Foundation, Inc.
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dnl
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dnl This file is free software; you can redistribute it and/or modify
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dnl it under the terms of the GNU General Public License as published by
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dnl the Free Software Foundation; either version 3 of the License, or
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dnl (at your option) any later version.
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dnl
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dnl This program is distributed in the hope that it will be useful,
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dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
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dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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dnl GNU General Public License for more details.
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dnl
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dnl You should have received a copy of the GNU General Public License
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dnl along with this program; see the file COPYING3. If not see
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dnl <http://www.gnu.org/licenses/>.
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dnl
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AC_INIT(gold, 0.1)
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AC_CONFIG_SRCDIR(gold.cc)
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AC_CANONICAL_TARGET
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AM_INIT_AUTOMAKE([no-dist parallel-tests])
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AM_SILENT_RULES([yes])
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AM_CONFIG_HEADER(config.h:config.in)
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AC_USE_SYSTEM_EXTENSIONS
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# PR 14072
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AH_VERBATIM([00_CONFIG_H_CHECK],
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[/* Check that config.h is #included before system headers
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(this works only for glibc, but that should be enough). */
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#if defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__CONFIG_H__)
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# error config.h must be #included before system headers
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#endif
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#define __CONFIG_H__ 1])
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AC_ARG_WITH(sysroot,
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[ --with-sysroot[=DIR] search for usr/lib et al within DIR],
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[sysroot=$withval], [sysroot=no])
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if test "$sysroot" = "yes"; then
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sysroot='${exec_prefix}/${target_alias}/sys-root'
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elif test "$sysroot" = "no"; then
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sysroot=
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fi
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sysroot_relocatable=0
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if test -n "$sysroot"; then
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case "$sysroot" in
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"${prefix}" | "${prefix}/"* | \
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"${exec_prefix}" | "${exec_prefix}/"* | \
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'${prefix}' | '${prefix}/'*| \
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'${exec_prefix}' | '${exec_prefix}/'*)
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sysroot_relocatable=1
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;;
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esac
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fi
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AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT, "$sysroot",
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[System root for target files])
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AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT_RELOCATABLE, $sysroot_relocatable,
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[Whether the system root can be relocated])
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dnl "install_as_default" is true if the linker to be installed as the
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dnl default linker, ld.
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dnl "installed_linker" is the installed gold linker name.
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installed_linker=ld.gold
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AC_ARG_ENABLE(gold,
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[[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
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[case "${enableval}" in
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default)
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install_as_default=yes
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;;
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yes)
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if test x${enable_ld} = xno; then
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install_as_default=yes
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fi
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;;
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esac],
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[install_as_default=no])
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AC_SUBST(install_as_default)
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AC_SUBST(installed_linker)
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AC_PLUGINS
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if test "$plugins" = "yes"; then
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AC_DEFINE(ENABLE_PLUGINS, 1,
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[Define to enable linker plugins])
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fi
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AM_CONDITIONAL(PLUGINS, test "$plugins" = "yes")
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# Decide if -z relro should be enabled in ELF linker by default.
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ac_default_ld_z_relro=unset
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# Provide a configure time option to override our default.
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AC_ARG_ENABLE(relro,
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AS_HELP_STRING([--enable-relro],
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[enable -z relro in ELF linker by default]),
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[case "${enableval}" in
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yes) ac_default_ld_z_relro=1 ;;
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no) ac_default_ld_z_relro=0 ;;
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esac])dnl
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if test "${ac_default_ld_z_relro}" = unset; then
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ac_default_ld_z_relro=1
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fi
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AC_DEFINE_UNQUOTED(DEFAULT_LD_Z_RELRO,
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$ac_default_ld_z_relro,
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[Define to 1 if you want to enable -z relro in ELF linker by default.])
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AC_ARG_ENABLE([targets],
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[ --enable-targets alternative target configurations],
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[case "${enableval}" in
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yes | "")
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AC_MSG_ERROR([--enable-targets option must specify target names or 'all'])
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;;
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no)
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enable_targets=
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;;
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*)
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enable_targets=$enableval
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;;
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esac],
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[# For now, enable all targets by default
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enable_targets=all
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])
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# Canonicalize the enabled targets.
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if test -n "$enable_targets"; then
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for targ in `echo $enable_targets | sed -e 's/,/ /g'`; do
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result=`$ac_config_sub $targ 2>/dev/null`
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if test -n "$result"; then
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canon_targets="$canon_targets $result"
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else
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# Permit unrecognized target names, like "all".
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canon_targets="$canon_targets $targ"
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fi
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done
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fi
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# Decide which "--hash-style" to use by default
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# Provide a configure time option to override our default.
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AC_ARG_ENABLE([default-hash-style],
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AS_HELP_STRING([--enable-default-hash-style={sysv,gnu,both}],
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[use this default hash style]),
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[case "${enable_default_hash_style}" in
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sysv | gnu | both) ;;
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*) AC_MSG_ERROR([bad value ${enable_default_hash_style} for enable-default-hash-style option]) ;;
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esac],
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[case "${target}" in
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# Enable gnu hash only on GNU targets, but not mips
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mips*-*-*) enable_default_hash_style=sysv ;;
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*-*-gnu* | *-*-linux* | *-*-nacl*) enable_default_hash_style=both ;;
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*) enable_default_hash_style=sysv ;;
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esac])
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AC_DEFINE_UNQUOTED([DEFAULT_HASH_STYLE],
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["${enable_default_hash_style}"],
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[Set the default --hash-style value])
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# See which specific instantiations we need.
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targetobjs=
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all_targets=
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default_machine=
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default_size=
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default_big_endian=
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default_osabi=ELFOSABI_NONE
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targ_32_little=
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targ_32_big=
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targ_64_little=
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targ_64_big=
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for targ in $target $canon_targets; do
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if test "$targ" = "all"; then
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targ_32_little=yes
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targ_32_big=yes
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targ_64_little=yes
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targ_64_big=yes
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all_targets=yes
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else
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. ${srcdir}/configure.tgt
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if test "$targ_obj" = "UNKNOWN"; then
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AC_MSG_ERROR("unsupported target $targ")
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else
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targetobjs="$targetobjs ${targ_obj}.\$(OBJEXT)"
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if test "$targ_extra_obj" != ""; then
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targetobjs="$targetobjs ${targ_extra_obj}.\$(OBJEXT)"
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fi
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if test "$targ_size" = "32" -o "$targ_extra_size" = "32"; then
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if test "$targ_big_endian" = "true" \
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-o "$targ_extra_big_endian" = "true"; then
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targ_32_big=yes
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fi
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if test "$targ_big_endian" = "false" \
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-o "$targ_extra_big_endian" = "false"; then
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targ_32_little=yes
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fi
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fi
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if test "$targ_size" = "64" -o "$targ_extra_size" = "64"; then
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if test "$targ_big_endian" = "true" \
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-o "$targ_extra_big_endian" = "true"; then
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targ_64_big=yes
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fi
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if test "$targ_big_endian" = "false" \
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-o "$targ_extra_big_endian" = "false"; then
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targ_64_little=yes
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fi
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fi
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if test "$target" = "$targ"; then
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default_machine=$targ_machine
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default_size=$targ_size
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default_big_endian=$targ_big_endian
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default_osabi=$targ_osabi
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AM_CONDITIONAL(DEFAULT_TARGET_AARCH64, test "$targ_obj" = "aarch64")
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AM_CONDITIONAL(DEFAULT_TARGET_ARM, test "$targ_obj" = "arm")
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AM_CONDITIONAL(DEFAULT_TARGET_I386, test "$targ_obj" = "i386")
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AM_CONDITIONAL(DEFAULT_TARGET_POWERPC, test "$targ_obj" = "powerpc")
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AM_CONDITIONAL(DEFAULT_TARGET_SPARC, test "$targ_obj" = "sparc")
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AM_CONDITIONAL(DEFAULT_TARGET_S390, test "$targ_obj" = "s390")
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target_x86_64=no
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target_x32=no
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if test "$targ_obj" = "x86_64"; then
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case "$target" in
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x86_64*-linux-gnux32)
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target_x32=yes
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default_size=32
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;;
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*)
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target_x86_64=yes
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;;
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esac
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fi
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AM_CONDITIONAL(DEFAULT_TARGET_X86_64, test "$target_x86_64" = "yes")
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AM_CONDITIONAL(DEFAULT_TARGET_X32, test "$target_x32" = "yes")
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AM_CONDITIONAL(DEFAULT_TARGET_X86_64_OR_X32,
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test "$target_x86_64" = "yes" -o "$target_x32" = "yes")
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AM_CONDITIONAL(DEFAULT_TARGET_TILEGX, test "$targ_obj" = "tilegx")
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AM_CONDITIONAL(DEFAULT_TARGET_MIPS, test "$targ_obj" = "mips")
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DEFAULT_TARGET=${targ_obj}
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AC_SUBST(DEFAULT_TARGET)
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fi
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fi
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fi
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done
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# Remove any duplicates.
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to=""
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for t in $targetobjs; do
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case " $to " in
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*" $t "*) ;;
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*) to="$to $t" ;;
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esac
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done
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targetobjs=$to
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if test -n "$targ_32_little"; then
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AC_DEFINE(HAVE_TARGET_32_LITTLE, 1,
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[Define to support 32-bit little-endian targets])
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fi
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if test -n "$targ_32_big"; then
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AC_DEFINE(HAVE_TARGET_32_BIG, 1,
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[Define to support 32-bit big-endian targets])
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fi
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if test -n "$targ_64_little"; then
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AC_DEFINE(HAVE_TARGET_64_LITTLE, 1,
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[Define to support 64-bit little-endian targets])
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fi
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if test -n "$targ_64_big"; then
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AC_DEFINE(HAVE_TARGET_64_BIG, 1,
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[Define to support 64-bit big-endian targets])
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fi
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if test -n "$all_targets"; then
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TARGETOBJS='$(ALL_TARGETOBJS)'
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else
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TARGETOBJS="$targetobjs"
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fi
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AC_SUBST(TARGETOBJS)
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AC_DEFINE_UNQUOTED(GOLD_DEFAULT_MACHINE, $default_machine,
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[Default machine code])
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AC_DEFINE_UNQUOTED(GOLD_DEFAULT_SIZE, $default_size,
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[Default size (32 or 64)])
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AC_DEFINE_UNQUOTED(GOLD_DEFAULT_BIG_ENDIAN, $default_big_endian,
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[Default big endian (true or false)])
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AC_DEFINE_UNQUOTED(GOLD_DEFAULT_OSABI, $default_osabi,
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[Default OSABI code])
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AC_ARG_WITH(lib-path,
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[ --with-lib-path=dir1:dir2... set default LIB_PATH],
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[case "$withval" in
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yes) LIB_PATH='"/lib:/usr/lib"' ;;
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no) LIB_PATH='""' ;;
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*) LIB_PATH='"'"$withval"'"' ;;
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esac],
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[LIB_PATH='"::DEFAULT::"'])
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AC_DEFINE_UNQUOTED(LIB_PATH, $LIB_PATH,
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[Default library search path])
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if test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias"; then
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AC_DEFINE(NATIVE_LINKER, 1, [Whether configured as a native linker])
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fi
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AC_CHECK_TOOL(NM, nm)
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AC_PROG_CC
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AC_PROG_CXX
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AC_PROG_YACC
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AC_PROG_RANLIB
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AC_PROG_INSTALL
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AC_PROG_LN_S
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AC_GNU_SOURCE
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ZW_GNU_GETTEXT_SISTER_DIR
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AM_PO_SUBDIRS
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AC_C_BIGENDIAN
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AC_EXEEXT
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AM_CONDITIONAL(NATIVE_LINKER,
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test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias")
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AM_CONDITIONAL(GCC, test "$GCC" = yes)
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AM_CONDITIONAL(NATIVE_OR_CROSS_LINKER,
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test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias" -o "x$host_alias" = "x$build_alias")
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dnl Test for whether static linking is supported. Some systems do not
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dnl install static libraries. This only affects the set of tests that
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dnl we run.
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AC_CACHE_CHECK([whether static linking works], [gold_cv_lib_static],
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[LDFLAGS_hold=$LDFLAGS
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LDFLAGS="$LDFLAGS -static"
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AC_LINK_IFELSE([
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AC_LANG_PROGRAM([[void f() { }]])],
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[gold_cv_lib_static=yes], [gold_cv_lib_static=no])
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LDFLAGS=$LDFLAGS_hold])
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AM_CONDITIONAL(HAVE_STATIC, test "$gold_cv_lib_static" = "yes")
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dnl Some architectures do not support taking pointers of functions
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dnl defined in shared libraries except in -fPIC mode. We need to
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dnl tell the unittest framework if we're compiling for one of those
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dnl targets, so it doesn't try to run the tests that do that.
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AM_CONDITIONAL(FN_PTRS_IN_SO_WITHOUT_PIC, [
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case $target_cpu in
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powerpc*) false;;
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x86_64) false;;
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sparc64) false;;
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s390x) false;;
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*) true;;
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esac])
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dnl Test for gcc 4.1 or later. Full support for -mcmodel=medium is
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dnl only available in gcc 4.1.
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AC_CACHE_CHECK([for gcc >= 4.1], [gold_cv_prog_gcc41],
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[AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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#if !defined __GNUC__
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error
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#elif __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 1)
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error
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#endif
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])], [gold_cv_prog_gcc41=yes], [gold_cv_prog_gcc41=no])])
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save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -mcmodel=medium"
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], [have_mcmodel_medium=yes], [have_mcmodel_medium=no])
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CFLAGS="$save_CFLAGS"
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dnl Whether we can test -mcmodel=medium.
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AM_CONDITIONAL(MCMODEL_MEDIUM,
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[test "$target_cpu" = "x86_64" -a "$have_mcmodel_medium" = "yes" -a "$gold_cv_prog_gcc41" = "yes"])
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dnl Test for gcc 9 or later. Some incremental tests fail with GCC 9 or
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dnl later.
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AC_CACHE_CHECK([for gcc >= 9], [gold_cv_prog_gcc9],
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[AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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#if !defined __GNUC__ || __GNUC__ < 9
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error
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#endif
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])], [gold_cv_prog_gcc9=yes], [gold_cv_prog_gcc9=no])])
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AM_CONDITIONAL(GCC9, [test "$gold_cv_prog_gcc9" = "yes"])
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dnl Test for -fcf-protection on x86-64. Some incremental tests fail with
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dnl -fcf-protection.
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AC_CACHE_CHECK([for -fcf-protection], [gold_cv_cflags_cf_protection],
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[AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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#if !defined __x86_64__ || !defined __CET__
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error
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#endif
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])], [gold_cv_cflags_cf_protection=yes], [gold_cv_cflags_cf_protection=no])])
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AM_CONDITIONAL(CFLAGS_CF_PROTECTION, [test "$gold_cv_cflags_cf_protection" = "yes"])
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AC_CACHE_CHECK([whether $CC supports -fmerge-constants],
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[gold_cv_merge_constants], [
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save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -fmerge-constants"
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([const char *s = "foo";])],
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[gold_cv_merge_constants=yes],
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[gold_cv_merge_constants=no])
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CFLAGS="$save_CFLAGS"])
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AC_SUBST([MERGE_CONSTANTS_FLAG])
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AS_IF([test "$gold_cv_merge_constants" = yes],
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[MERGE_CONSTANTS_FLAG=-fmerge-constants],
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[MERGE_CONSTANTS_FLAG=])
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dnl Test for __thread support.
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AC_CACHE_CHECK([for thread support], [gold_cv_c_thread],
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[AC_COMPILE_IFELSE([AC_LANG_SOURCE([__thread int i = 1;])],
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[gold_cv_c_thread=yes], [gold_cv_c_thread=no])])
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AM_CONDITIONAL(TLS, test "$gold_cv_c_thread" = "yes")
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dnl On GNU/Linux TLS in static programs only works when using glibc
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dnl 2.4 or later.
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AC_CACHE_CHECK([for glibc >= 2.4], [gold_cv_lib_glibc24],
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[AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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#include <features.h>
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#if !defined __GLIBC__
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error
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#elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 4)
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error
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#endif
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])], [gold_cv_lib_glibc24=yes], [gold_cv_lib_glibc24=no])])
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AM_CONDITIONAL(STATIC_TLS, test "$gold_cv_lib_glibc24" = "yes")
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dnl Test for #pragma omp threadprivate
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AC_CACHE_CHECK([for omp support], [gold_cv_c_threadprivate],
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[save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -fopenmp"
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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#include <omp.h>
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int i;
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#pragma omp threadprivate (i)
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])], [gold_cv_c_threadprivate=yes], [gold_cv_c_threadprivate=no])
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CFLAGS="$save_CFLAGS"])
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if test "$gold_cv_c_threadprivate" = "yes"; then
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AC_DEFINE(HAVE_OMP_SUPPORT, 1,
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[Define if compiler supports #pragma omp threadprivate])
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fi
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AM_CONDITIONAL(OMP_SUPPORT, test "$gold_cv_c_threadprivate" = "yes")
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dnl Test for the -ftls-dialect=gnu2 option.
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dnl Use -Werror in case of compilers that make unknown -m options warnings.
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dnl They would pass the test here, but fail in actual use when $WARN_CFLAGS
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dnl gets set later by default Autoconf magic to include -Werror. (We are
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dnl assuming here that there is no compiler that groks -mtls-dialect=gnu2
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dnl but does not grok -Werror.)
|
|
save_CFLAGS="$CFLAGS"
|
|
CFLAGS="$CFLAGS -Werror -fpic -mtls-dialect=gnu2"
|
|
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
|
|
__thread int i;
|
|
void foo (void)
|
|
{
|
|
i = 10;
|
|
}
|
|
])], [have_tls_gnu2=yes], [have_tls_gnu2=no])
|
|
CFLAGS="$save_CFLAGS"
|
|
AM_CONDITIONAL(TLS_GNU2_DIALECT, test "$have_tls_gnu2" = "yes")
|
|
|
|
dnl On GNU/Linux TLS descriptors are supported by the dynamic loader
|
|
dnl only with glibc 2.9 or later.
|
|
AC_CACHE_CHECK([for glibc >= 2.9], [gold_cv_lib_glibc29],
|
|
[AC_COMPILE_IFELSE([AC_LANG_SOURCE([
|
|
#include <features.h>
|
|
#if !defined __GLIBC__
|
|
error
|
|
#elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 9)
|
|
error
|
|
#endif
|
|
])], [gold_cv_lib_glibc29=yes], [gold_cv_lib_glibc29=no])])
|
|
|
|
AM_CONDITIONAL(TLS_DESCRIPTORS, test "$gold_cv_lib_glibc29" = "yes")
|
|
|
|
dnl Test for the -frandom-seed option.
|
|
AC_CACHE_CHECK([for -frandom-seed support], [gold_cv_c_random_seed],
|
|
[save_CFLAGS="$CFLAGS"
|
|
CFLAGS="$CFLAGS -frandom-seed=foo"
|
|
AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], [gold_cv_c_random_seed=yes],
|
|
[gold_cv_c_random_seed=no])
|
|
CFLAGS="$save_CFLAGS"])
|
|
if test "$gold_cv_c_random_seed" = "yes"; then
|
|
# In Makefile, '$@' will be expanded to be the name of the file
|
|
# being built, providing a unique seed for each file.
|
|
RANDOM_SEED_CFLAGS=-frandom-seed=\$@
|
|
fi
|
|
AC_SUBST(RANDOM_SEED_CFLAGS)
|
|
|
|
dnl On GNU/Linux ifunc is supported by the dynamic linker in glibc
|
|
dnl 2.11 or later, and by binutils 2.20.1 or later.
|
|
AC_CACHE_CHECK([for glibc ifunc support], [gold_cv_lib_glibc_ifunc],
|
|
[save_LDFLAGS="$LDFLAGS"
|
|
LDFLAGS="$LDFLAGS -static"
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
|
|
#include <features.h>
|
|
#if !defined __GLIBC__
|
|
error
|
|
#elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 11)
|
|
error
|
|
#endif
|
|
void func (void) { }
|
|
void invoke (void);
|
|
__asm__(".type invoke, %gnu_indirect_function");
|
|
typedef void (*funcptr) (void);
|
|
funcptr dispatch (void) __asm__ ("invoke");
|
|
funcptr dispatch (void) { return &func; }]],
|
|
[[invoke();]])
|
|
], [
|
|
if ${NM} conftest$EXEEXT | grep "__rela\?_iplt_start" >/dev/null 2>&1; then
|
|
gold_cv_lib_glibc_ifunc=both
|
|
else
|
|
gold_cv_lib_glibc_ifunc=dyn
|
|
fi], [gold_cv_lib_glibc_ifunc=no])
|
|
LDFLAGS="$save_LDFLAGS"])
|
|
|
|
AM_CONDITIONAL(IFUNC, test "$gold_cv_lib_glibc_ifunc" != "no")
|
|
AM_CONDITIONAL(IFUNC_STATIC, test "$gold_cv_lib_glibc_ifunc" = "both")
|
|
|
|
AM_BINUTILS_WARNINGS
|
|
|
|
WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//' -e 's/-Wshadow//'`
|
|
AC_SUBST(WARN_CXXFLAGS)
|
|
|
|
AC_ARG_WITH(gold-ldflags,
|
|
[ --with-gold-ldflags=FLAGS additional link flags for gold],
|
|
[if test "$withval" = "no" -o "$withval" = "yes"; then
|
|
GOLD_LDFLAGS=
|
|
else
|
|
GOLD_LDFLAGS=$withval
|
|
fi],
|
|
[GOLD_LDFLAGS=])
|
|
AC_SUBST(GOLD_LDFLAGS)
|
|
|
|
AC_ARG_WITH(gold-ldadd,
|
|
[ --with-gold-ldadd=LIBS additional libraries for gold],
|
|
[if test "$withval" = "no" -o "$withval" = "yes"; then
|
|
GOLD_LDADD=
|
|
else
|
|
GOLD_LDADD=$withval
|
|
fi],
|
|
[GOLD_LDADD=])
|
|
AC_SUBST(GOLD_LDADD)
|
|
|
|
dnl Force support for large files by default. This may need to be
|
|
dnl host dependent. If build == host, we can check getconf LFS_CFLAGS.
|
|
LFS_CFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
|
|
AC_SUBST(LFS_CFLAGS)
|
|
|
|
AC_CHECK_HEADERS(sys/mman.h)
|
|
AC_CHECK_FUNCS(chsize mmap link)
|
|
AC_REPLACE_FUNCS(pread ftruncate ffsll)
|
|
|
|
AC_CACHE_CHECK([mremap with MREMAP_MAYMOVE], [gold_cv_lib_mremap_maymove],
|
|
[AC_LINK_IFELSE([
|
|
AC_LANG_PROGRAM([[
|
|
#include <sys/mman.h>
|
|
void f() { mremap (0, 0, 0, MREMAP_MAYMOVE); }
|
|
]])], [gold_cv_lib_mremap_maymove=yes], [gold_cv_lib_mremap_maymove=no])])
|
|
if test "$gold_cv_lib_mremap_maymove" = "yes"; then
|
|
AC_DEFINE(HAVE_MREMAP, 1,
|
|
[Define to 1 if you have the mremap function with MREMAP_MAYMOVE support])
|
|
else
|
|
AC_LIBOBJ(mremap)
|
|
fi
|
|
|
|
# Link in zlib if we can. This allows us to write compressed sections.
|
|
AM_ZLIB
|
|
|
|
AC_ARG_ENABLE([threads],
|
|
[[ --enable-threads[=ARG] multi-threaded linking [ARG={auto,yes,no}]]],
|
|
[case "${enableval}" in
|
|
yes | "") threads=yes ;;
|
|
no) threads=no ;;
|
|
auto) threads=auto ;;
|
|
*) threads=yes ;;
|
|
esac],
|
|
[threads=auto])
|
|
|
|
if test "$threads" = "yes"; then
|
|
AX_PTHREAD([threads=yes], AC_MSG_ERROR([pthread not found]))
|
|
elif test "$threads" = "auto"; then
|
|
AX_PTHREAD([threads=yes], [threads=no])
|
|
fi
|
|
|
|
if test "$threads" = "yes"; then
|
|
AC_DEFINE(ENABLE_THREADS, 1,
|
|
[Define to do multi-threaded linking])
|
|
fi
|
|
AM_CONDITIONAL(THREADS, test "$threads" = "yes")
|
|
|
|
dnl We have to check these in C, not C++, because autoconf generates
|
|
dnl tests which have no type information, and current glibc provides
|
|
dnl multiple declarations of functions like basename when compiling
|
|
dnl with C++.
|
|
AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf, strverscmp])
|
|
|
|
dnl Check if gcc supports the -gpubnames option.
|
|
dnl Use -Werror in case of compilers that make unknown -g options warnings.
|
|
dnl They would pass the test here, but fail in actual use when $WARN_CFLAGS
|
|
dnl gets set later by default Autoconf magic to include -Werror. (We are
|
|
dnl assuming here that there is no compiler that groks -gpubnames
|
|
dnl but does not grok -Werror.)
|
|
save_CFLAGS="$CFLAGS"
|
|
CFLAGS="$CFLAGS -Werror -gpubnames"
|
|
AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], [have_pubnames=yes], [have_pubnames=no])
|
|
CFLAGS="$save_CFLAGS"
|
|
AM_CONDITIONAL(HAVE_PUBNAMES, test "$have_pubnames" = "yes")
|
|
|
|
dnl Check if gcc supports the -fno-use-linker-plugin option.
|
|
save_CFLAGS="$CFLAGS"
|
|
CFLAGS="$CFLAGS -Werror -fno-use-linker-plugin"
|
|
AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], [have_no_use_linker_plugin=yes], [have_no_use_linker_plugin=no])
|
|
CFLAGS="$save_CFLAGS"
|
|
AM_CONDITIONAL(HAVE_NO_USE_LINKER_PLUGIN, test "$have_no_use_linker_plugin" = "yes")
|
|
|
|
AC_LANG_PUSH(C++)
|
|
|
|
AC_CHECK_HEADERS(unordered_set unordered_map)
|
|
AC_CHECK_HEADERS(tr1/unordered_set tr1/unordered_map)
|
|
AC_CHECK_HEADERS(ext/hash_map ext/hash_set)
|
|
AC_CHECK_HEADERS(byteswap.h)
|
|
|
|
dnl Check for bswap_{16,32,64}
|
|
AC_CHECK_DECLS([bswap_16, bswap_32, bswap_64], [], [], [[#include <byteswap.h>]])
|
|
|
|
dnl When plugins enabled dynamic loader interface is required. Check headers
|
|
dnl which may provide this interface. Add the necessary library to link.
|
|
AC_CHECK_HEADERS(windows.h)
|
|
AC_CHECK_HEADERS(dlfcn.h)
|
|
AC_SEARCH_LIBS(dlopen, [dl dld])
|
|
case "$ac_cv_search_dlopen" in
|
|
no*) DLOPEN_LIBS="";;
|
|
*) DLOPEN_LIBS="$ac_cv_search_dlopen";;
|
|
esac
|
|
AC_SUBST(DLOPEN_LIBS)
|
|
|
|
AC_CHECK_FUNCS(mallinfo mallinfo2 posix_fallocate fallocate readv sysconf times mkdtemp)
|
|
AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf, strverscmp, strndup, memmem])
|
|
|
|
# Use of ::std::tr1::unordered_map::rehash causes undefined symbols
|
|
# at link time with some versions of GCC.
|
|
AC_CACHE_CHECK([whether ::std::tr1::unordered_map::rehash is usable.],
|
|
[gold_cv_unordered_map_rehash],
|
|
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[
|
|
#include <tr1/unordered_map>
|
|
void bar() { ::std::tr1::unordered_map<int, int> x; x.rehash(10); }
|
|
]])], [gold_cv_unordered_map_rehash=yes], [gold_cv_unordered_map_rehash=no])])
|
|
if test "$gold_cv_unordered_map_rehash" = "yes"; then
|
|
AC_DEFINE(HAVE_TR1_UNORDERED_MAP_REHASH, 1,
|
|
[Define if ::std::tr1::unordered_map::rehash is usable])
|
|
fi
|
|
|
|
# Use of tr1/unordered_map with off_t as a key is not supported on GCC
|
|
# 4.1.xx when compiling in 32-bit mode with a 64-bit off_t type.
|
|
AC_CACHE_CHECK([whether std::tr1::hash<off_t> is defined],
|
|
[gold_cv_hash_off_t],
|
|
[CXXFLAGS_hold=$CXXFLAGS
|
|
CXXFLAGS="$CXXFLAGS $LFS_CFLAGS"
|
|
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
|
|
#include <sys/types.h>
|
|
#include <tr1/unordered_map>
|
|
std::tr1::hash<off_t> h;
|
|
])],
|
|
[gold_cv_hash_off_t=yes],
|
|
[gold_cv_hash_off_t=no])
|
|
CXXFLAGS=$CXXFLAGS_hold])
|
|
if test "$gold_cv_hash_off_t" = "yes"; then
|
|
AC_DEFINE(HAVE_TR1_HASH_OFF_T, 1,
|
|
[Define if std::tr1::hash<off_t> is usable])
|
|
fi
|
|
|
|
# gcc 4.3.0 doesn't recognize the printf attribute on a template
|
|
# function. Check for that. This is gcc bug 35546. This test can
|
|
# probably be removed after the bug has been fixed for a while.
|
|
AC_CACHE_CHECK([whether we can use attributes with template functions],
|
|
[gold_cv_template_attribute],
|
|
[AC_COMPILE_IFELSE([AC_LANG_SOURCE([
|
|
template<typename T> extern void foo(const char*, ...)
|
|
__attribute__ ((__format__ (__printf__, 1, 2)));
|
|
template<typename T> void foo(const char* format, ...) {}
|
|
void bar() { foo<int>("%s\n", "foo"); }
|
|
])], [gold_cv_template_attribute=yes], [gold_cv_template_attribute=no])])
|
|
if test "$gold_cv_template_attribute" = "yes"; then
|
|
AC_DEFINE(HAVE_TEMPLATE_ATTRIBUTES, 1,
|
|
[Define if attributes work on C++ templates])
|
|
fi
|
|
|
|
dnl Check if the system has struct stat::st_mtim.
|
|
AC_CACHE_CHECK([for struct stat::st_mtim.],
|
|
[gold_cv_stat_st_mtim],
|
|
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
|
|
#include <sys/stat.h>
|
|
long bar() { struct stat s; return (long)(s.st_mtim.tv_sec + s.st_mtim.tv_sec);}
|
|
]])], [gold_cv_stat_st_mtim=yes], [gold_cv_stat_st_mtim=no])])
|
|
if test "$gold_cv_stat_st_mtim" = "yes"; then
|
|
AC_DEFINE(HAVE_STAT_ST_MTIM, 1,
|
|
[Define if struct stat has a field st_mtim with timespec for mtime])
|
|
fi
|
|
|
|
AC_LANG_POP(C++)
|
|
|
|
AC_CHECK_HEADERS(locale.h)
|
|
AC_CHECK_FUNCS(setlocale)
|
|
AM_LC_MESSAGES
|
|
|
|
AM_MAINTAINER_MODE
|
|
|
|
AC_OUTPUT(Makefile testsuite/Makefile po/Makefile.in:po/Make-in)
|