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binutils-gdb/ld/configure.ac

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dnl Process this file with autoconf to produce a configure script
dnl
dnl Copyright (C) 2012-2020 Free Software Foundation, Inc.
dnl
dnl This file is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 3 of the License, or
dnl (at your option) any later version.
dnl
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program; see the file COPYING3. If not see
dnl <http://www.gnu.org/licenses/>.
dnl
m4_include([../bfd/version.m4])
AC_INIT([ld], BFD_VERSION)
AC_CONFIG_SRCDIR(ldmain.c)
AC_CANONICAL_TARGET
AC_CANONICAL_BUILD
AC_ISC_POSIX
AM_INIT_AUTOMAKE
AM_MAINTAINER_MODE
AC_PROG_CC
AC_PROG_CXX
AC_PROG_GREP
AC_GNU_SOURCE
AC_USE_SYSTEM_EXTENSIONS
AC_PROG_INSTALL
LT_INIT
ACX_LARGEFILE
AC_ARG_WITH(lib-path, [ --with-lib-path=dir1:dir2... set default LIB_PATH],LIB_PATH=$withval)
AC_ARG_ENABLE(targets,
[ --enable-targets alternative target configurations],
[case "${enableval}" in
yes | "") AC_MSG_ERROR(enable-targets option must specify target names or 'all')
;;
no) enable_targets= ;;
*) enable_targets=$enableval ;;
esac])dnl
AC_ARG_ENABLE(64-bit-bfd,
[ --enable-64-bit-bfd 64-bit support (on hosts with narrower word sizes)],
[case "${enableval}" in
yes) want64=true ;;
no) want64=false ;;
*) AC_MSG_ERROR(bad value ${enableval} for 64-bit-bfd option) ;;
esac],[want64=false])dnl
AC_ARG_WITH(sysroot,
[ --with-sysroot[=DIR] Search for usr/lib et al within DIR.],
[
case ${with_sysroot} in
yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_alias}/sys-root' ;;
*) TARGET_SYSTEM_ROOT=$with_sysroot ;;
esac
TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
use_sysroot=yes
if test "x$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="$t"
;;
esac
], [
use_sysroot=no
TARGET_SYSTEM_ROOT=
TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"\"'
])
AC_SUBST(use_sysroot)
AC_SUBST(TARGET_SYSTEM_ROOT)
AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
dnl Use --enable-gold to decide if this linker should be the default.
dnl "install_as_default" is set to false if gold is the default linker.
dnl "installed_linker" is the installed BFD linker name.
AC_ARG_ENABLE(gold,
[[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
[case "${enableval}" in
default)
install_as_default=no
installed_linker=ld.bfd
;;
yes|no)
install_as_default=yes
installed_linker=ld.bfd
;;
*)
AC_MSG_ERROR([invalid --enable-gold argument])
;;
esac],
[install_as_default=yes
installed_linker=ld.bfd])
AC_SUBST(install_as_default)
AC_SUBST(installed_linker)
AC_ARG_ENABLE([got],
AS_HELP_STRING([--enable-got=<type>],
[GOT handling scheme (target, single, negative, multigot)]),
[case "${enableval}" in
target | single | negative | multigot) got_handling=$enableval ;;
*) AC_MSG_ERROR(bad value ${enableval} for --enable-got option) ;;
esac],
[got_handling=target])
case "${got_handling}" in
target)
AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_TARGET_DEFAULT],
[Define to choose default GOT handling scheme]) ;;
single)
AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_SINGLE],
[Define to choose default GOT handling scheme]) ;;
negative)
AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_NEGATIVE],
[Define to choose default GOT handling scheme]) ;;
multigot)
AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_MULTIGOT],
[Define to choose default GOT handling scheme]) ;;
*) AC_MSG_ERROR(bad value ${got_handling} for --enable-got option) ;;
esac
# PR gas/19109
# Decide the default method for compressing debug sections.
ac_default_compressed_debug_sections=unset
# Provide a configure time option to override our default.
AC_ARG_ENABLE(compressed_debug_sections,
AS_HELP_STRING([--enable-compressed-debug-sections={all,ld,none}],
[compress debug sections by default])],
[case ,"${enableval}", in
,yes, | ,all, | *,ld,*) ac_default_compressed_debug_sections=yes ;;
,no, | ,none,) ac_default_compressed_debug_sections=no ;;
esac])dnl
# Decide setting DT_RUNPATH instead of DT_RPATH by default
ac_default_new_dtags=unset
# Provide a configure time option to override our default.
AC_ARG_ENABLE(new_dtags,
AS_HELP_STRING([--enable-new-dtags],
[set DT_RUNPATH instead of DT_RPATH by default])],
[case "${enableval}" in
yes) ac_default_new_dtags=1 ;;
no) ac_default_new_dtags=0 ;;
esac])dnl
# Decide if -z relro should be enabled in ELF linker by default.
ac_default_ld_z_relro=unset
# Provide a configure time option to override our default.
AC_ARG_ENABLE(relro,
AS_HELP_STRING([--enable-relro],
[enable -z relro in ELF linker by default]),
[case "${enableval}" in
yes) ac_default_ld_z_relro=1 ;;
no) ac_default_ld_z_relro=0 ;;
esac])dnl
# Decide if -z separate-code should be enabled in ELF linker by default.
ac_default_ld_z_separate_code=unset
AC_ARG_ENABLE(separate-code,
AS_HELP_STRING([--enable-separate-code],
[enable -z separate-code in ELF linker by default]),
[case "${enableval}" in
yes) ac_default_ld_z_separate_code=1 ;;
no) ac_default_ld_z_separate_code=0 ;;
esac])
# Decide which "--hash-style" to use by default
# Provide a configure time option to override our default.
AC_ARG_ENABLE([default-hash-style],
AS_HELP_STRING([--enable-default-hash-style={sysv,gnu,both}],
[use this default hash style]),
[case "${enable_default_hash_style}" in
sysv | gnu | both) ;;
*) AC_MSG_ERROR([bad value ${enable_default_hash_style} for enable-default-hash-style option]) ;;
esac],
[case "${target}" in
# Enable gnu hash only on GNU targets, but not mips
mips*-*-*) enable_default_hash_style=sysv ;;
*-*-gnu* | *-*-linux* | *-*-nacl*) enable_default_hash_style=both ;;
*) enable_default_hash_style=sysv ;;
esac])
case "${enable_default_hash_style}" in
sysv | both) ac_default_emit_sysv_hash=1 ;;
*) ac_default_emit_sysv_hash=0 ;;
esac
case "${enable_default_hash_style}" in
gnu | both) ac_default_emit_gnu_hash=1 ;;
*) ac_default_emit_gnu_hash=0 ;;
esac
AM_BINUTILS_WARNINGS
AM_LC_MESSAGES
AC_CONFIG_HEADERS([config.h:config.in])
# PR 14072
AH_VERBATIM([00_CONFIG_H_CHECK],
[/* Check that config.h is #included before system headers
(this works only for glibc, but that should be enough). */
#if defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__CONFIG_H__)
# error config.h must be #included before system headers
#endif
#define __CONFIG_H__ 1])
if test -z "$target" ; then
AC_MSG_ERROR(Unrecognized target system type; please check config.sub.)
fi
if test -z "$host" ; then
AC_MSG_ERROR(Unrecognized host system type; please check config.sub.)
fi
# host-specific stuff:
ALL_LINGUAS="bg da de es fi fr ga id it ja pt_BR ru sr sv tr uk vi zh_CN zh_TW"
ZW_GNU_GETTEXT_SISTER_DIR
AM_PO_SUBDIRS
AC_EXEEXT
AC_PROG_YACC
AM_PROG_LEX
AM_MAINTAINER_MODE
AM_CONDITIONAL(GENINSRC_NEVER, false)
ACX_PROG_CMP_IGNORE_INITIAL
. ${srcdir}/configure.host
AC_SUBST(HDEFINES)
AC_SUBST(NATIVE_LIB_DIRS)
AC_CHECK_HEADERS(string.h strings.h stdlib.h unistd.h elf-hints.h limits.h locale.h sys/param.h)
AC_CHECK_HEADERS(fcntl.h sys/file.h sys/time.h sys/stat.h)
ACX_HEADER_STRING
AC_CHECK_FUNCS(glob mkstemp realpath sbrk setlocale waitpid)
AC_CHECK_FUNCS(open lseek close)
AC_HEADER_DIRENT
dnl AC_CHECK_HEADERS(sys/mman.h)
AC_FUNC_MMAP
AC_SEARCH_LIBS([dlopen], [dl])
AM_CONDITIONAL([ENABLE_PLUGINS], [test x$plugins = xyes])
AC_ARG_ENABLE(initfini-array,
[ --disable-initfini-array do not use .init_array/.fini_array sections],
[case "${enableval}" in
yes|no) ;;
*) AC_MSG_ERROR([invalid --enable-initfini-array argument]) ;;
esac], [enable_initfini_array=yes])
AC_SUBST(enable_initfini_array)
if test $enable_initfini_array = yes; then
AC_DEFINE(HAVE_INITFINI_ARRAY, 1,
[Define .init_array/.fini_array sections are available and working.])
fi
AC_MSG_CHECKING(for a known getopt prototype in unistd.h)
AC_CACHE_VAL(ld_cv_decl_getopt_unistd_h,
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);])],
ld_cv_decl_getopt_unistd_h=yes, ld_cv_decl_getopt_unistd_h=no)])
AC_MSG_RESULT($ld_cv_decl_getopt_unistd_h)
if test $ld_cv_decl_getopt_unistd_h = yes; then
AC_DEFINE([HAVE_DECL_GETOPT], 1,
[Is the prototype for getopt in <unistd.h> in the expected format?])
fi
BFD_BINARY_FOPEN
AC_CHECK_DECLS([strstr, free, sbrk, getenv, environ])
# Link in zlib if we can. This allows us to read and write
# compressed CTF sections.
AM_ZLIB
# When converting linker scripts into strings for use in emulation
# files, use astring.sed if the compiler supports ANSI string
# concatenation, or ostring.sed otherwise. This is to support the
# broken Microsoft MSVC compiler, which limits the length of string
# constants, while still supporting pre-ANSI compilers which do not
# support string concatenation.
AC_MSG_CHECKING([whether ANSI C string concatenation works])
AC_CACHE_VAL(ld_cv_string_concatenation,
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [char *a = "a" "a";])],
ld_cv_string_concatenation=yes,
ld_cv_string_concatenation=no)])
AC_MSG_RESULT($ld_cv_string_concatenation)
if test "$ld_cv_string_concatenation" = "yes"; then
STRINGIFY=astring.sed
else
STRINGIFY=ostring.sed
fi
AC_SUBST(STRINGIFY)
# target-specific stuff:
all_targets=
EMUL=
all_emuls=
all_emul_extras=
all_libpath=
TDIRS=
# If the host is 64-bit, then we enable 64-bit targets by default.
# This is consistent with what ../bfd/configure.ac does.
if test x${want64} = xfalse; then
AC_CHECK_SIZEOF(void *)
if test "x${ac_cv_sizeof_void_p}" = "x8"; then
want64=true
fi
fi
elf_list_options=FALSE
elf_shlib_list_options=FALSE
elf_plt_unwind_list_options=FALSE
for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'`
do
if test "$targ_alias" = "all"; then
all_targets=true
elf_list_options=TRUE
elf_shlib_list_options=TRUE
elf_plt_unwind_list_options=TRUE
else
# Canonicalize the secondary target names.
result=`$ac_config_sub $targ_alias 2>/dev/null`
if test -n "$result"; then
targ=$result
else
targ=$targ_alias
fi
. ${srcdir}/configure.tgt
if test "$targ" = "$target"; then
EMUL=$targ_emul
fi
if test x${want64} = xfalse; then
. ${srcdir}/../bfd/config.bfd
fi
if test x${want64} = xtrue; then
targ_extra_emuls="$targ_extra_emuls $targ64_extra_emuls"
targ_extra_libpath="$targ_extra_libpath $targ64_extra_libpath"
fi
for i in $targ_emul $targ_extra_emuls $targ_extra_libpath; do
case " $all_emuls " in
*" e${i}.o "*) ;;
*)
all_emuls="$all_emuls e${i}.o"
eval result=\$tdir_$i
test -z "$result" && result=$targ_alias
TDIRS="$TDIRS
tdir_$i=$result"
case "${i}" in
*elf*)
elf_list_options=TRUE
;;
*)
if $GREP "TEMPLATE_NAME=elf" ${srcdir}/emulparams/${i}.sh >/dev/null 2>/dev/null; then
elf_list_options=TRUE
fi
;;
esac
if test "$elf_list_options" = "TRUE"; then
source_sh()
{
. $1
}
source_sh ${srcdir}/emulparams/${i}.sh
if test x${GENERATE_SHLIB_SCRIPT} = xyes; then
elf_shlib_list_options=TRUE
fi
if test x${PLT_UNWIND} = xyes; then
elf_plt_unwind_list_options=TRUE
fi
fi
;;
esac
done
for i in $targ_emul $targ_extra_libpath; do
case " $all_libpath " in
*" ${i} "*) ;;
*)
if test -z "$all_libpath"; then
all_libpath=${i}
else
all_libpath="$all_libpath ${i}"
fi
;;
esac
done
for i in $targ_extra_ofiles; do
case " $all_emul_extras " in
*" ${i} "*) ;;
*)
all_emul_extras="$all_emul_extras ${i}"
;;
esac
done
fi
done
if test x$ac_default_compressed_debug_sections = xyes ; then
AC_DEFINE(DEFAULT_FLAG_COMPRESS_DEBUG, 1, [Define if you want compressed debug sections by default.])
fi
if test "${ac_default_new_dtags}" = unset; then
ac_default_new_dtags=0
fi
AC_DEFINE_UNQUOTED(DEFAULT_NEW_DTAGS,
$ac_default_new_dtags,
[Define to 1 if you want to set DT_RUNPATH instead of DT_RPATH by default.])
if test "${ac_default_ld_z_relro}" = unset; then
ac_default_ld_z_relro=0
fi
AC_DEFINE_UNQUOTED(DEFAULT_LD_Z_RELRO,
$ac_default_ld_z_relro,
[Define to 1 if you want to enable -z relro in ELF linker by default.])
if test "${ac_default_ld_z_separate_code}" = unset; then
ac_default_ld_z_separate_code=0
fi
AC_DEFINE_UNQUOTED(DEFAULT_LD_Z_SEPARATE_CODE,
$ac_default_ld_z_separate_code,
[Define to 1 if you want to enable -z separate-code in ELF linker by default.])
AC_DEFINE_UNQUOTED([DEFAULT_EMIT_SYSV_HASH],
[$ac_default_emit_sysv_hash],
[Define to 1 if you want to emit sysv hash in the ELF linker by default.])
AC_DEFINE_UNQUOTED([DEFAULT_EMIT_GNU_HASH],
[$ac_default_emit_gnu_hash],
[Define to 1 if you want to emit gnu hash in the ELF linker by default.])
AC_SUBST(elf_list_options)
AC_SUBST(elf_shlib_list_options)
AC_SUBST(elf_plt_unwind_list_options)
AC_SUBST(EMUL)
AC_SUBST(TDIRS)
AM_SUBST_NOTMAKE(TDIRS)
if test x${all_targets} = xtrue; then
if test x${want64} = xtrue; then
EMULATION_OFILES='$(ALL_EMULATIONS) $(ALL_64_EMULATIONS)'
EMUL_EXTRA_OFILES='$(ALL_EMUL_EXTRA_OFILES) $(ALL_64_EMUL_EXTRA_OFILES)'
else
EMULATION_OFILES='$(ALL_EMULATIONS)'
EMUL_EXTRA_OFILES='$(ALL_EMUL_EXTRA_OFILES)'
fi
else
EMULATION_OFILES=$all_emuls
EMUL_EXTRA_OFILES=$all_emul_extras
fi
AC_SUBST(EMULATION_OFILES)
AC_SUBST(EMUL_EXTRA_OFILES)
AC_SUBST(LIB_PATH)
EMULATION_LIBPATH=$all_libpath
AC_SUBST(EMULATION_LIBPATH)
if test x${enable_static} = xno; then
TESTBFDLIB="-Wl,--rpath,../bfd/.libs ../bfd/.libs/libbfd.so"
TESTCTFLIB="-Wl,--rpath,../libctf/.libs ../libctf/.libs/libctf.so"
else
TESTBFDLIB="../bfd/.libs/libbfd.a"
TESTCTFLIB="../libctf/.libs/libctf.a"
fi
AC_SUBST(TESTBFDLIB)
AC_SUBST(TESTCTFLIB)
target_vendor=${target_vendor=$host_vendor}
case "$target_vendor" in
hp) EXTRA_SHLIB_EXTENSION=".sl" ;;
*) EXTRA_SHLIB_EXTENSION= ;;
esac
case "$target_os" in
lynxos) EXTRA_SHLIB_EXTENSION=".a" ;;
esac
if test x${EXTRA_SHLIB_EXTENSION} != x ; then
AC_DEFINE_UNQUOTED(EXTRA_SHLIB_EXTENSION, "$EXTRA_SHLIB_EXTENSION",
[Additional extension a shared object might have.])
fi
AC_CONFIG_COMMANDS([default],
[[
case "$srcdir" in
.) srcdirpre= ;;
*) srcdirpre='$(srcdir)/' ;;
esac
POFILES=
GMOFILES=
for lang in dummy $OBSOLETE_ALL_LINGUAS; do
if test $lang != dummy; then
POFILES="$POFILES $srcdirpre$lang.po"
GMOFILES="$GMOFILES $srcdirpre$lang.gmo"
fi
done
sed -e '/^SRC-POTFILES =/r po/SRC-POTFILES' \
-e '/^BLD-POTFILES =/r po/BLD-POTFILES' \
-e "s,@POFILES@,$POFILES," \
-e "s,@GMOFILES@,$GMOFILES," \
po/Makefile.in > po/Makefile]],[[]])
dnl Required by html, pdf, install-pdf and install-html
AC_SUBST(datarootdir)
AC_SUBST(docdir)
AC_SUBST(htmldir)
AC_SUBST(pdfdir)
AC_CONFIG_FILES(Makefile po/Makefile.in:po/Make-in)
AC_OUTPUT
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