1 dnl Process this file with autoconf to produce a configure script.
3 dnl And be careful when changing it! If you must add tests with square
4 dnl brackets, be sure changequote invocations surround it.
6 dnl Copyright (C) 2012-2020 Free Software Foundation, Inc.
8 dnl This file is free software; you can redistribute it and/or modify
9 dnl it under the terms of the GNU General Public License as published by
10 dnl the Free Software Foundation; either version 3 of the License, or
11 dnl (at your option) any later version.
13 dnl This program is distributed in the hope that it will be useful,
14 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
15 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 dnl GNU General Public License for more details.
18 dnl You should have received a copy of the GNU General Public License
19 dnl along with this program; see the file COPYING3. If not see
20 dnl <http://www.gnu.org/licenses/>.
22 dnl v2.5 needed for --bindir et al
23 m4_include([../bfd/version.m4])
24 AC_INIT([gas], BFD_VERSION)
25 AC_CONFIG_SRCDIR(as.h)
27 dnl Autoconf 2.57 will find the aux dir without this. However, unless
28 dnl we specify this explicitly, automake-1.7 will assume that ylwrap is in
29 dnl gas/ instead of gas/../.
38 AC_USE_SYSTEM_EXTENSIONS
42 ACX_PROG_CMP_IGNORE_INITIAL
44 AC_ARG_ENABLE(targets,
45 [ --enable-targets alternative target configurations besides the primary],
46 [case "${enableval}" in
47 yes | "") AC_MSG_ERROR(enable-targets option must specify target names or 'all')
49 no) enable_targets= ;;
50 *) enable_targets=$enableval ;;
54 . ${srcdir}/../bfd/development.sh
55 test "$development" = true && ac_checking=yes
56 AC_ARG_ENABLE(checking,
57 [ --enable-checking enable run-time checks],
58 [case "${enableval}" in
59 no|none) ac_checking= ;;
62 if test x$ac_checking != x ; then
63 AC_DEFINE(ENABLE_CHECKING, 1, [Define if you want run-time sanity checks.])
67 # Decide the default method for compressing debug sections.
68 ac_default_compressed_debug_sections=unset
69 # Provide a configure time option to override our default.
70 AC_ARG_ENABLE(compressed_debug_sections,
71 AS_HELP_STRING([--enable-compressed-debug-sections={all,gas,none}],
72 [compress debug sections by default]),
73 [case ,"${enableval}", in
74 ,yes, | ,all, | *,gas,*) ac_default_compressed_debug_sections=yes ;;
75 ,no, | ,none,) ac_default_compressed_debug_sections=no ;;
76 *) ac_default_compressed_debug_sections=unset ;;
80 # Decide if x86 assembler should generate relax relocations.
81 ac_default_x86_relax_relocations=unset
82 # Provide a configure time option to override our default.
83 AC_ARG_ENABLE(x86_relax_relocations,
84 AS_HELP_STRING([--enable-x86-relax-relocations],
85 [generate x86 relax relocations by default]),
86 [case "${enableval}" in
87 no) ac_default_x86_relax_relocations=0 ;;
90 # Decide if ELF assembler should generate common symbols with the
92 ac_default_elf_stt_common=unset
93 # Provide a configure time option to override our default.
94 AC_ARG_ENABLE(elf_stt_common,
95 AS_HELP_STRING([--enable-elf-stt-common],
96 [generate ELF common symbols with STT_COMMON type by default]),
97 [case "${enableval}" in
98 yes) ac_default_elf_stt_common=1 ;;
102 # Decide if the ELF assembler should default to generating
103 # GNU Build notes if none are provided by the input.
104 ac_default_generate_build_notes=0
105 # Provide a configuration option to override the default.
106 AC_ARG_ENABLE(generate_build_notes,
107 AS_HELP_STRING([--enable-generate-build-notes],
108 [generate GNU Build notes if none are provided by the input]),
109 [case "${enableval}" in
110 yes) ac_default_generate_build_notes=1 ;;
111 no) ac_default_generate_build_notes=0 ;;
114 # Decide if the MIPS assembler should default to enable MIPS fix Loongson3
116 ac_default_mips_fix_loongson3_llsc=unset
117 # Provide a configuration option to override the default.
118 AC_ARG_ENABLE(mips-fix-loongson3-llsc,
119 AS_HELP_STRING([--enable-mips-fix-loongson3-llsc],
120 [enable MIPS fix Loongson3 LLSC errata]),
121 [case "${enableval}" in
122 yes) ac_default_mips_fix_loongson3_llsc=1 ;;
123 no) ac_default_mips_fix_loongson3_llsc=0 ;;
126 # Decide if the x86 ELF assembler should default to generating GNU x86
127 # used ISA and feature properties.
128 ac_default_generate_x86_used_note=unset
129 # Provide a configuration option to override the default.
130 AC_ARG_ENABLE(x86-used-note,
131 AS_HELP_STRING([--enable-x86-used-note],
132 [generate GNU x86 used ISA and feature properties]),
133 [case "${enableval}" in
134 yes) ac_default_generate_x86_used_note=1 ;;
135 no) ac_default_generate_x86_used_note=0 ;;
138 # Decide if the RISC-V ELF assembler should default to generating attribute.
139 ac_default_generate_riscv_attr=unset
140 # Provide a configuration option to override the default.
141 AC_ARG_ENABLE(default-riscv-attribute,
142 AS_HELP_STRING([--enable-default-riscv-attribute],
143 [generate RISC-V arch attribute by default]),
144 [case "${enableval}" in
145 yes) ac_default_generate_riscv_attr=1 ;;
146 no) ac_default_generate_riscv_attr=0 ;;
153 # Generate a header file
154 AC_CONFIG_HEADERS(config.h:config.in)
156 dnl Option --with-cpu=TYPE allows configure type control of the default
157 dnl cpu type within the assembler. Currently only the ARC target
158 dnl supports this feature, but others may be added in the future.
160 AS_HELP_STRING([--with-cpu=CPU],
161 [default cpu variant is CPU (currently only supported on ARC)]),
162 [AC_DEFINE_UNQUOTED(TARGET_WITH_CPU,
164 [Target specific CPU.])],
168 AH_VERBATIM([00_CONFIG_H_CHECK],
169 [/* Check that config.h is #included before system headers
170 (this works only for glibc, but that should be enough). */
171 #if defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__CONFIG_H__)
172 # error config.h must be #included before system headers
174 #define __CONFIG_H__ 1])
176 # If we are on a DOS filesystem, we must use gdb.ini rather than
179 *-*-msdos* | *-*-go32* | *-*-mingw32* | *-*-windows*)
181 AC_CONFIG_FILES(gdb.ini:gdbinit.in)
185 AC_CONFIG_FILES(.gdbinit:gdbinit.in)
190 #We need this for the host.
195 # Makefile target for installing gas in $(tooldir)/bin.
196 install_tooldir=install-exec-tooldir
200 if test -n "$enable_targets" ; then
201 for t in `echo $enable_targets | sed 's/,/ /g'`; do
202 if test $t = "all"; then
206 result=`$ac_config_sub $t 2>/dev/null`
207 if test -n "$result" ; then
208 canon_targets="$canon_targets $result"
210 # # Permit "all", etc. We don't support it yet though.
211 # canon_targets="$canon_targets $t"
214 GAS_UNIQ(canon_targets)
219 for this_target in $target $canon_targets ; do
222 . ${srcdir}/configure.tgt
224 case ${target_cpu} in
226 AC_DEFINE_UNQUOTED(DEFAULT_CRIS_ARCH, $arch,
227 [Default CRIS architecture.])
231 if test ${this_target} = $target ; then
232 target_cpu_type=${cpu_type}
233 elif test ${target_cpu_type} != ${cpu_type} ; then
237 generic_target=${cpu_type}-${target_vendor}-${target_os}
238 case ${generic_target} in
242 AC_DEFINE(STRICTCOFF, 1, [Using strict COFF?])
245 i386-*-linux-* | x86_64-*-linux-*)
246 if test ${this_target} = $target \
247 && test ${ac_default_generate_x86_used_note} = unset; then
248 ac_default_generate_x86_used_note=1
253 | x86_64-*-solaris2 \
254 | i386-*-solaris2.[[0-9]] \
255 | i386-*-solaris2.1[[01]] \
256 | x86_64-*-solaris2.1[[01]])
257 if test ${this_target} = $target \
258 && test ${ac_default_x86_relax_relocations} = unset; then
259 ac_default_x86_relax_relocations=0
269 AC_DEFINE(AIX_WEAK_SUPPORT, 1,
270 [Define if using AIX 5.2 value for C_WEAKEXT.])
273 if test ${this_target} = $target; then
274 AC_DEFINE(TARGET_SOLARIS_COMMENT, 1,
275 [Define if default target is PowerPC Solaris.])
277 if test x${endian} = xbig; then
278 AC_MSG_ERROR(Solaris must be configured little endian)
283 if test ${this_target} = $target ; then
285 if test x${endian} = xbig; then
287 elif test x${endian} = xlittle; then
290 if test x${endian_def} != x; then
291 AC_DEFINE_UNQUOTED(TARGET_BYTES_BIG_ENDIAN, $endian_def,
292 [Define as 1 if big endian.])
296 # Other random stuff.
300 # Set mips_cpu to the name of the default CPU.
301 case ${target_cpu} in
302 mips | mipsbe | mipseb | mipsle | mipsel | mips64 | mips64el)
305 mipsisa32 | mipsisa32el)
308 mipsisa32r2 | mipsisa32r2el)
311 mipsisa32r3 | mipsisa32r3el)
314 mipsisa32r5 | mipsisa32r5el)
317 mipsisa32r6 | mipsisa32r6el)
320 mipsisa64 | mipsisa64el)
323 mipsisa64r2 | mipsisa64r2el)
326 mipsisa64r3 | mipsisa64r3el)
329 mipsisa64r5 | mipsisa64r5el)
332 mipsisa64r6 | mipsisa64r6el)
335 mipstx39 | mipstx39el)
338 mips64vr | mips64vrel)
341 mipsisa32r2* | mipsisa64r2*)
343 mips_cpu=`echo $target_cpu | sed -e 's/[a-z]*..r2//' -e 's/el$//'`
346 mipsisa32r6* | mipsisa64r6*)
348 mips_cpu=`echo $target_cpu | sed -e 's/[a-z]*..r6//' -e 's/el$//'`
351 mips64* | mipsisa64* | mipsisa32*)
353 mips_cpu=`echo $target_cpu | sed -e 's/[a-z]*..//' -e 's/el$//'`
358 mips_cpu=`echo $target_cpu | sed -e 's/^mips//' -e 's/el$//'`
362 AC_MSG_ERROR($target_cpu isn't a supported MIPS CPU name)
365 # See whether it's appropriate to set E_MIPS_ABI_O32 for o32
366 # binaries. It's a GNU extension that some OSes don't understand.
375 # Decide whether to generate 32-bit or 64-bit code by default.
376 # Used to resolve -march=from-abi when an embedded ABI is selected.
378 mips64*-*-* | mipsisa64*-*-*)
385 # Decide which ABI to target by default.
387 mips64*-linux* | mips-sgi-irix6* | mips64*-freebsd* \
388 | mips64*-kfreebsd*-gnu | mips64*-ps2-elf*)
389 mips_default_abi=N32_ABI
391 mips*-linux* | mips*-freebsd* | mips*-kfreebsd*-gnu)
392 mips_default_abi=O32_ABI
395 mips_default_abi=N64_ABI
398 mips_default_abi=NO_ABI
401 AC_DEFINE_UNQUOTED(MIPS_CPU_STRING_DEFAULT, "$mips_cpu",
402 [Default CPU for MIPS targets. ])
403 AC_DEFINE_UNQUOTED(USE_E_MIPS_ABI_O32, $use_e_mips_abi_o32,
404 [Allow use of E_MIPS_ABI_O32 on MIPS targets. ])
405 AC_DEFINE_UNQUOTED(MIPS_DEFAULT_64BIT, $mips_default_64bit,
406 [Generate 64-bit code by default on MIPS targets. ])
407 AC_DEFINE_UNQUOTED(MIPS_DEFAULT_ABI, $mips_default_abi,
408 [Choose a default ABI for MIPS targets. ])
412 # Do we need the opcodes library?
420 case "${enable_shared}" in
421 yes) shared_opcodes=true ;;
422 *opcodes*) shared_opcodes=true ;;
423 *) shared_opcodes=false ;;
428 # Any other special object files needed ?
432 for f in bfin-parse.o bfin-lex-wrapper.o; do
433 case " $extra_objects " in
435 *) extra_objects="$extra_objects $f" ;;
441 if test $this_target = $target ; then
442 AC_DEFINE_UNQUOTED(DEFAULT_ARCH, "${arch}", [Default architecture.])
446 epiphany | fr30 | ip2k | iq2000 | lm32 | m32r | or1k)
458 case " $extra_objects " in
460 *) extra_objects="$extra_objects $f" ;;
469 for f in itbl-parse.o itbl-lex-wrapper.o itbl-ops.o; do
470 case " $extra_objects " in
472 *) extra_objects="$extra_objects $f" ;;
482 # setup NDS32_LINUX_TOOLCHAIN definition
483 if test "linux" = $em; then
484 AC_DEFINE(NDS32_LINUX_TOOLCHAIN, 1,
485 [Define value for nds32_linux_toolchain])
487 AC_DEFINE(NDS32_LINUX_TOOLCHAIN, 0,
488 [Define default value for nds32_linux_toolchain])
491 # Decide BASELINE, REDUCED_REGS, FPU_DP_EXT, FPU_SP_EXT features
492 # based on arch_name.
493 AC_MSG_CHECKING(for default configuration of --with-arch)
494 if test "x${with_arch}" != x; then
496 v2j | v2s | v2f | v2 | v3m | v3j | v3s | v3f | v3 )
497 AC_DEFINE_UNQUOTED(NDS32_DEFAULT_ARCH_NAME, "$with_arch",
498 [Define value for nds32_arch_name])
501 AC_MSG_ERROR(This kind of arch name does *NOT* exist!)
505 AC_MSG_RESULT($with_arch)
507 # Decide features one by one.
508 AC_MSG_CHECKING(for default configuration of --enable-dx-regs)
509 if test "x${enable_dx_regs}" = xyes; then
510 AC_DEFINE(NDS32_DEFAULT_DX_REGS, 1,
511 [Define value for nds32_dx_regs])
513 AC_DEFINE(NDS32_DEFAULT_DX_REGS, 0,
514 [Define default value for nds32_dx_regs])
516 AC_MSG_RESULT($enable_dx_regs)
518 AC_MSG_CHECKING(for default configuration of --enable-perf-ext)
519 if test "x${enable_perf_ext}" = xno; then
520 AC_DEFINE(NDS32_DEFAULT_PERF_EXT, 0,
521 [Define value for nds32_perf_ext])
523 AC_DEFINE(NDS32_DEFAULT_PERF_EXT, 1,
524 [Define default value for nds32_perf_ext])
526 AC_MSG_RESULT($enable_perf_ext)
528 AC_MSG_CHECKING(for default configuration of --enable-perf-ext2)
529 if test "x${enable_perf_ext2}" = xno; then
530 AC_DEFINE(NDS32_DEFAULT_PERF_EXT2, 0,
531 [Define value for nds32_perf_ext2])
533 AC_DEFINE(NDS32_DEFAULT_PERF_EXT2, 1,
534 [Define default value for nds32_perf_ext2])
536 AC_MSG_RESULT($enable_perf_ext2)
538 AC_MSG_CHECKING(for default configuration of --enable-string-ext)
539 if test "x${enable_string_ext}" = xno; then
540 AC_DEFINE(NDS32_DEFAULT_STRING_EXT, 0,
541 [Define value for nds32_string_ext])
543 AC_DEFINE(NDS32_DEFAULT_STRING_EXT, 1,
544 [Define default value for nds32_string_ext])
546 AC_MSG_RESULT($enable_string_ext)
548 AC_MSG_CHECKING(for default configuration of --enable-audio-ext)
549 if test "x${enable_audio_ext}" = xno; then
550 AC_DEFINE(NDS32_DEFAULT_AUDIO_EXT, 0,
551 [Define value for nds32_audio_ext])
553 AC_DEFINE(NDS32_DEFAULT_AUDIO_EXT, 1,
554 [Define default value for nds32_audio_ext])
556 AC_MSG_RESULT($enable_audio_ext)
558 AC_MSG_CHECKING(for default configuration of --enable-dsp-ext)
559 if test "x${enable_dsp_ext}" = xno; then
560 AC_DEFINE(NDS32_DEFAULT_DSP_EXT, 0,
561 [Define value for nds32_dsp_ext])
563 AC_DEFINE(NDS32_DEFAULT_DSP_EXT, 1,
564 [Define default value for nds32_dsp_ext])
566 AC_MSG_RESULT($enable_dsp_ext)
568 AC_MSG_CHECKING(for default configuration of --enable-zol-ext)
569 if test "x${enable_zol_ext}" = xno; then
570 AC_DEFINE(NDS32_DEFAULT_ZOL_EXT, 0,
571 [Define value for nds32_zol_ext])
573 AC_DEFINE(NDS32_DEFAULT_ZOL_EXT, 1,
574 [Define default value for nds32_zol_ext])
576 AC_MSG_RESULT($enable_zol_ext)
579 aarch64 | i386 | s390 | sparc)
580 if test $this_target = $target ; then
581 AC_DEFINE_UNQUOTED(DEFAULT_ARCH, "${arch}", [Default architecture.])
586 # --target=riscv[32|64]-*-*. */
587 if test $this_target = $target ; then
588 AC_DEFINE_UNQUOTED(DEFAULT_ARCH, "${arch}", [Default architecture.])
591 # --with-arch=<value>. The syntax of <value> is same as Gas option -march.
592 AC_MSG_CHECKING(for default configuration of --with-arch)
593 if test "x${with_arch}" != x; then
594 AC_DEFINE_UNQUOTED(DEFAULT_RISCV_ARCH_WITH_EXT, "$with_arch",
595 [Define default value for RISC-V -march.])
597 AC_MSG_RESULT($with_arch)
599 # --with-isa-spec=[2.2|20190608|20191213].
600 AC_MSG_CHECKING(for default configuration of --with-isa-spec)
601 if test "x${with_isa_spec}" != x; then
602 AC_DEFINE_UNQUOTED(DEFAULT_RISCV_ISA_SPEC, "$with_isa_spec",
603 [Define default value for RISC-V -misa-spec.])
605 AC_MSG_RESULT($with_isa_spec)
607 # --with-priv-spec=[1.9|1.9.1|1.10|1.11].
608 AC_MSG_CHECKING(for default configuration of --with-priv-spec)
609 if test "x${with_priv_spec}" != x; then
610 AC_DEFINE_UNQUOTED(DEFAULT_RISCV_PRIV_SPEC, "$with_priv_spec",
611 [Define default value for RISC-V -mpriv-spec])
613 AC_MSG_RESULT($with_priv_spec)
618 case " $extra_objects " in
620 *) extra_objects="$extra_objects $f" ;;
626 case " $extra_objects " in
628 *) extra_objects="$extra_objects $f" ;;
641 f=config/xtensa-relax.o
642 case " $extra_objects " in
644 *) extra_objects="$extra_objects $f" ;;
652 if test $using_cgen = yes ; then
654 case " $extra_objects " in
656 *) extra_objects="$extra_objects $f" ;;
660 # See if we really can support this configuration with the emulation code.
662 if test $this_target = $target ; then
670 case " $extra_objects " in
672 *) extra_objects="$extra_objects $f" ;;
676 # From target name and format, produce a list of supported emulations.
678 case ${generic_target}-${fmt} in
679 mips-*-*-*) case "$endian" in
680 big) emulation="mipsbelf mipslelf mipself" ;;
681 *) emulation="mipslelf mipsbelf mipself" ;;
683 # i386-pc-pe-coff != i386-pc-coff.
685 # Uncommenting the next line will turn on support for i386 AOUT
686 # for the default linux configuration
687 # i386-*-linux*-elf) emulation="i386elf i386aout" ;;
689 i386-*-aout) emulation="i386aout" ;;
690 i386-*-coff) emulation="i386coff" ;;
691 i386-*-elf) emulation="i386elf" ;;
693 # Always all formats. The first stated emulation becomes the default.
694 cris-*-*aout*) emulation="crisaout criself" ;;
695 cris-*-*) emulation="criself crisaout" ;;
698 emulations="$emulations $emulation"
702 if test ${ac_default_x86_relax_relocations} = unset; then
703 ac_default_x86_relax_relocations=1
705 AC_DEFINE_UNQUOTED(DEFAULT_GENERATE_X86_RELAX_RELOCATIONS,
706 $ac_default_x86_relax_relocations,
707 [Define to 1 if you want to generate x86 relax relocations by default.])
709 if test ${ac_default_elf_stt_common} = unset; then
710 ac_default_elf_stt_common=0
712 AC_DEFINE_UNQUOTED(DEFAULT_GENERATE_ELF_STT_COMMON,
713 $ac_default_elf_stt_common,
714 [Define to 1 if you want to generate ELF common symbols with the
715 STT_COMMON type by default.])
717 AC_DEFINE_UNQUOTED(DEFAULT_GENERATE_BUILD_NOTES,
718 $ac_default_generate_build_notes,
719 [Define to 1 if you want to generate GNU Build attribute notes
720 by default, if none are contained in the input.])
722 if test ${ac_default_generate_x86_used_note} = unset; then
723 ac_default_generate_x86_used_note=0
725 AC_DEFINE_UNQUOTED(DEFAULT_X86_USED_NOTE,
726 $ac_default_generate_x86_used_note,
727 [Define to 1 if you want to generate GNU x86 used ISA and feature
728 properties by default.])
730 if test ${ac_default_generate_riscv_attr} = unset; then
733 ac_default_generate_riscv_attr=1
736 ac_default_generate_riscv_attr=0
741 AC_DEFINE_UNQUOTED(DEFAULT_RISCV_ATTR,
742 $ac_default_generate_riscv_attr,
743 [Define to 1 if you want to generate RISC-V arch attribute by default.])
745 if test ${ac_default_mips_fix_loongson3_llsc} = unset; then
746 ac_default_mips_fix_loongson3_llsc=0
748 AC_DEFINE_UNQUOTED(DEFAULT_MIPS_FIX_LOONGSON3_LLSC,
749 $ac_default_mips_fix_loongson3_llsc,
750 [Define to 1 if you want to fix Loongson3 LLSC Errata by default.])
752 if test x$ac_default_compressed_debug_sections = xyes ; then
753 AC_DEFINE(DEFAULT_FLAG_COMPRESS_DEBUG, 1, [Define if you want compressed debug sections by default.])
756 # Turn on all targets if possible
757 if test ${all_targets} = "yes"; then
758 case ${target_cpu_type} in
760 case ${obj_format} in
762 emulations="$emulations i386coff i386elf"
765 emulations="$emulations i386aout i386elf"
768 emulations="$emulations i386aout i386coff"
773 case ${obj_format} in
775 emulations="$emulations i386coff i386elf"
778 emulations="$emulations i386aout i386elf"
781 emulations="$emulations i386aout i386coff"
788 # PE code has way too many macros tweaking behaviour
790 pe*) emulations="" ;;
793 # Assign floating point type. Most processors with FP support
794 # IEEE FP. On those that don't support FP at all, usually IEEE
796 case ${target_cpu} in
797 vax | pdp11 ) atof=vax ;;
801 case "${obj_format}" in
802 "") AC_MSG_ERROR(GAS does not know what format to use for target ${target}) ;;
805 # Unfortunately the cpu in cpu-opc.h file isn't always $(TARGET_CPU).
807 if test $using_cgen = yes ; then
808 case ${target_cpu} in
810 cgen_cpu_prefix=or1k ;;
811 *) cgen_cpu_prefix=${target_cpu} ;;
813 AC_SUBST(cgen_cpu_prefix)
814 AC_DEFINE(USING_CGEN, 1, [Using cgen code?])
818 dnl Make sure the desired support files exist.
821 if test ! -r ${srcdir}/config/tc-${target_cpu_type}.c; then
822 AC_MSG_ERROR(GAS does not support target CPU ${target_cpu_type})
825 if test ! -r ${srcdir}/config/obj-${obj_format}.c; then
826 AC_MSG_ERROR(GAS does not have support for object file format ${obj_format})
829 # Some COFF configurations want these random other flags set.
830 case ${obj_format} in
832 case ${target_cpu_type} in
833 i386) AC_DEFINE(I386COFF, 1, [Using i386 COFF?]) ;;
834 x86_64) AC_DEFINE(I386COFF, 1, [Using i386 COFF?]) ;;
839 # Getting this done right is going to be a bitch. Each configuration specified
840 # with --enable-targets=... should be checked for environment, format, cpu
843 # For each configuration, the necessary object file support code must be linked
844 # in. This might be only one, it might be up to four. The necessary emulation
845 # code needs to be provided, too.
847 # And then there's "--enable-targets=all"....
849 # For now, just always do it for MIPS ELF configurations. Sigh.
851 formats="${obj_format}"
855 for em in . $emulations ; do
858 mipsbelf | mipslelf | mipself)
859 fmt=elf file=mipself ;;
867 formats="$formats $fmt"
868 emfiles="$emfiles config/e-$file.o"
869 EMULATIONS="$EMULATIONS &$em,"
873 if test `set . $formats ; shift ; echo $#` -gt 1 ; then
874 for fmt in $formats ; do
876 aout) AC_DEFINE(OBJ_MAYBE_AOUT, 1, [a.out support?]) ;;
877 coff) AC_DEFINE(OBJ_MAYBE_COFF, 1, [COFF support?]) ;;
878 ecoff) AC_DEFINE(OBJ_MAYBE_ECOFF, 1, [ECOFF support?]) ;;
879 elf) AC_DEFINE(OBJ_MAYBE_ELF, 1, [ELF support?]) ;;
880 generic) AC_DEFINE(OBJ_MAYBE_GENERIC, 1, [generic support?]) ;;
881 som) AC_DEFINE(OBJ_MAYBE_SOM, 1, [SOM support?]) ;;
883 extra_objects="$extra_objects config/obj-$fmt.o"
887 if test `set . $emfiles ; shift ; echo $#` -gt 0 ; then
888 DEFAULT_EMULATION=`set . $emulations ; echo $2`
889 # e-mipself has more than one emulation per file, e-i386* has just one at the
890 # moment. If only one emulation is specified, then don't define
891 # USE_EMULATIONS or include any of the e-files as they will only be bloat.
892 case "${obj_format}${emfiles}" in
894 extra_objects="$extra_objects $emfiles"
895 AC_DEFINE(USE_EMULATIONS, 1, [Use emulation support?]) ;;
898 AC_SUBST(extra_objects)
899 AC_DEFINE_UNQUOTED(EMULATIONS, $EMULATIONS, [Supported emulations.])
900 AC_DEFINE_UNQUOTED(DEFAULT_EMULATION, "$DEFAULT_EMULATION",
901 [Default emulation.])
903 reject_dev_configs=yes
905 case ${reject_dev_configs}-${dev} in
907 AC_MSG_ERROR(GAS does not support the ${generic_target} configuration.)
911 AC_SUBST(target_cpu_type)
914 AC_SUBST(install_tooldir)
916 dnl AC_SUBST(emulation)
918 # do we need the opcodes library?
919 case "${need_opcodes}" in
921 OPCODES_LIB=../opcodes/libopcodes.la
925 AC_SUBST(OPCODES_LIB)
927 AC_DEFINE_UNQUOTED(TARGET_ALIAS, "${target_alias}", [Target alias.])
928 AC_DEFINE_UNQUOTED(TARGET_CANONICAL, "${target}", [Canonical target.])
929 AC_DEFINE_UNQUOTED(TARGET_CPU, "${target_cpu}", [Target CPU.])
930 AC_DEFINE_UNQUOTED(TARGET_VENDOR, "${target_vendor}", [Target vendor.])
931 AC_DEFINE_UNQUOTED(TARGET_OS, "${target_os}", [Target OS.])
936 ALL_LINGUAS="es fi fr id ja ru rw sv tr uk zh_CN"
937 ZW_GNU_GETTEXT_SISTER_DIR
941 AM_CONDITIONAL(GENINSRC_NEVER, false)
944 AC_CHECK_HEADERS(string.h stdlib.h memory.h strings.h unistd.h errno.h sys/types.h limits.h locale.h time.h sys/stat.h)
947 # Put this here so that autoconf's "cross-compiling" message doesn't confuse
948 # people who are not cross-compiling but are compiling cross-assemblers.
949 AC_MSG_CHECKING(whether compiling a cross-assembler)
950 if test "${host}" = "${target}"; then
954 AC_DEFINE(CROSS_COMPILE, 1, [Compiling cross-assembler?])
956 AC_MSG_RESULT($cross_gas)
958 dnl ansidecl.h will deal with const
963 # VMS doesn't have unlink.
964 AC_CHECK_FUNCS(unlink remove, break)
965 AC_CHECK_FUNCS(sbrk setlocale)
966 AC_CHECK_FUNCS(strsignal)
970 # do we need the math library?
971 case "${need_libm}" in
978 # Some non-ANSI preprocessors botch requoting inside strings. That's bad
979 # enough, but on some of those systems, the assert macro relies on requoting
983 # On some systems, the system header files may not declare malloc, realloc,
984 # and free. There are places where gas needs these functions to have been
985 # declared -- such as when taking their addresses.
993 #ifdef HAVE_STRINGS_H
1000 #ifdef HAVE_UNISTD_H
1005 # Does errno.h declare errno, or do we have to add a separate declaration
1007 GAS_CHECK_DECL_NEEDED(errno, f, int f, [
1013 AC_MSG_CHECKING(for a known getopt prototype in unistd.h)
1014 AC_CACHE_VAL(gas_cv_decl_getopt_unistd_h,
1015 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);])],
1016 gas_cv_decl_getopt_unistd_h=yes, gas_cv_decl_getopt_unistd_h=no)])
1017 AC_MSG_RESULT($gas_cv_decl_getopt_unistd_h)
1018 if test $gas_cv_decl_getopt_unistd_h = yes; then
1019 AC_DEFINE([HAVE_DECL_GETOPT], 1,
1020 [Is the prototype for getopt in <unistd.h> in the expected format?])
1023 GAS_CHECK_DECL_NEEDED(environ, f, char **f, $gas_test_headers)
1024 GAS_CHECK_DECL_NEEDED(ffs, f, int (*f)(int), $gas_test_headers)
1025 GAS_CHECK_DECL_NEEDED(free, f, void (*f)(), $gas_test_headers)
1026 GAS_CHECK_DECL_NEEDED(malloc, f, char *(*f)(), $gas_test_headers)
1027 GAS_CHECK_DECL_NEEDED(sbrk, f, char *(*f)(), $gas_test_headers)
1028 GAS_CHECK_DECL_NEEDED(strstr, f, char *(*f)(), $gas_test_headers)
1030 AC_CHECK_DECLS([free, getenv, malloc, mempcpy, realloc, stpcpy, strstr, vsnprintf, asprintf])
1034 # Link in zlib if we can. This allows us to write compressed debug sections.
1037 # Support for VMS timestamps via cross compile
1039 if test "$ac_cv_header_time_h" = yes; then
1040 GAS_HAVE_TIME_TYPE_MEMBER(struct tm, tm_gmtoff)
1043 if test "$ac_cv_header_sys_stat_h" = yes; then
1044 GAS_HAVE_SYS_STAT_TYPE_MEMBER(struct stat, st_mtim, tv_sec)
1045 GAS_HAVE_SYS_STAT_TYPE_MEMBER(struct stat, st_mtim, tv_nsec)
1049 dnl Required for html, pdf, install-pdf and install-html targets.
1050 AC_SUBST(datarootdir)
1055 dnl This must come last.
1057 dnl We used to make symlinks to files in the source directory, but now
1058 dnl we just use the right name for .c files, and create .h files in
1059 dnl the build directory which include the right .h file. Make sure
1060 dnl the old symlinks don't exist, so that a reconfigure in an existing
1061 dnl directory behaves reasonably.
1063 AC_CONFIG_FILES(Makefile doc/Makefile po/Makefile.in:po/Make-in)
1064 AC_CONFIG_COMMANDS([default],
1065 [rm -f targ-cpu.c targ-cpu.h obj-format.h obj-format.c targ-env.h atof-targ.c itbl-cpu.h
1066 echo '#include "tc-'"${target_cpu_type}"'.h"' > targ-cpu.h
1067 echo '#include "obj-'"${obj_format}"'.h"' > obj-format.h
1068 echo '#include "te-'"${te_file}"'.h"' > targ-env.h
1069 echo '#include "itbl-'"${target_cpu_type}"'.h"' > itbl-cpu.h
1070 if test "x$cgen_cpu_prefix" != x ; then
1071 echo '#include "opcodes/'"${cgen_cpu_prefix}"'-desc.h"' > cgen-desc.h
1073 [target_cpu_type=${target_cpu_type}
1074 cgen_cpu_prefix=${cgen_cpu_prefix}
1075 obj_format=${obj_format}
1076 te_file=${te_file}])