1 # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
2 # 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
3 # 2014, 2015, 2016, 2019, 2022 Free Software Foundation, Inc.
5 # This file is free software; you can redistribute it and/or modify it
6 # under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 3 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful, but
11 # WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 # General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; see the file COPYING3. If not see
17 # <http://www.gnu.org/licenses/>.
19 ##############################################################################
20 ### WARNING: this file contains embedded tabs. Do not run untabify on this file.
22 m4_include(config/acx.m4)
23 m4_include(config/override.m4)
24 m4_include(config/proginstall.m4)
25 m4_include(config/elf.m4)
26 m4_include(config/ax_cxx_compile_stdcxx.m4)
27 m4_include(config/gcc-plugin.m4)
28 m4_include([libtool.m4])
29 m4_include([ltoptions.m4])
30 m4_include([ltsugar.m4])
31 m4_include([ltversion.m4])
32 m4_include([lt~obsolete.m4])
33 m4_include([config/isl.m4])
35 AC_INIT(move-if-change)
36 AC_DISABLE_OPTION_CHECKING
39 # if PWD already has a value, it is probably wrong.
40 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
42 # Export original configure arguments for use by sub-configures.
43 # Quote arguments with shell meta charatcers.
44 TOPLEVEL_CONFIGURE_ARGUMENTS=
45 set -- "$progname" "$@"
49 *" "*|*" "*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
50 ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
51 # if the argument is of the form -foo=baz, quote the baz part only
52 ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
55 # Add the quoted argument to the list.
56 TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
58 if test "$silent" = yes; then
59 TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
61 # Remove the initial space we just introduced and, as these will be
62 # expanded by make, quote '$'.
63 TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
64 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
66 # Find the build, host, and target systems.
67 ACX_NONCANONICAL_BUILD
69 ACX_NONCANONICAL_TARGET
71 dnl Autoconf 2.5x and later will set a default program prefix if
72 dnl --target was used, even if it was the same as --host. Disable
73 dnl that behavior. This must be done before AC_CANONICAL_SYSTEM
75 test "$host_noncanonical" = "$target_noncanonical" &&
76 test "$program_prefix$program_suffix$program_transform_name" = \
78 program_transform_name=s,y,y,
83 m4_pattern_allow([^AS_FOR_TARGET$])dnl
84 m4_pattern_allow([^AS_FOR_BUILD$])dnl
86 # Get 'install' or 'install-sh' and its variants.
93 srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
95 # We pass INSTALL explicitly to sub-makes. Make sure that it is not
97 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
98 INSTALL="${srcpwd}/install-sh -c"
101 # Set srcdir to "." if that's what it is.
102 # This is important for multilib support.
104 if test "${pwd}" = "${srcpwd}" ; then
112 ### To add a new directory to the tree, first choose whether it is a target
113 ### or a host dependent tool. Then put it into the appropriate list
114 ### (library or tools, host or target), doing a dependency sort.
116 # Subdirs will be configured in the order listed in build_configdirs,
117 # configdirs, or target_configdirs; see the serialization section below.
119 # Dependency sorting is only needed when *configuration* must be done in
120 # a particular order. In all cases a dependency should be specified in
121 # the Makefile, whether or not it's implicitly specified here.
123 # Double entries in build_configdirs, configdirs, or target_configdirs may
124 # cause circular dependencies and break everything horribly.
126 # these library is used by various programs built for the build
129 build_libs="build-libiberty build-libcpp"
131 # these tools are built for the build environment
132 build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
134 # these libraries are used by various programs built for the host environment
136 host_libs="gettext libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libcody libdecnumber gmp mpfr mpc isl libiconv libctf libsframe libgrust "
138 # these tools are built for the host environment
139 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
140 # know that we are building the simulator.
141 # binutils, gas and ld appear in that order because it makes sense to run
142 # "make check" in that particular order.
143 # If --enable-gold is used, "gold" may replace "ld".
144 host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gdbserver gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gm2tools gotools c++tools"
146 # these libraries are built for the target environment, and are built after
147 # the host libraries and the host tools (which may be a cross compiler)
148 # Note that libiberty is not a target library.
149 target_libraries="target-libgcc \
150 target-libbacktrace \
156 target-libstdc++-v3 \
157 target-libsanitizer \
171 # these tools are built using the target libraries, and are intended to
172 # run only in the target environment
174 # note: any program that *uses* libraries that are in the "target_libraries"
175 # list belongs in this list.
177 target_tools="target-rda"
179 ################################################################################
181 ## All tools belong in one of the four categories, and are assigned above
182 ## We assign ${configdirs} this way to remove all embedded newlines. This
183 ## is important because configure will choke if they ever get through.
184 ## ${configdirs} is directories we build using the host tools.
185 ## ${target_configdirs} is directories we build using the target tools.
186 configdirs=`echo ${host_libs} ${host_tools}`
187 target_configdirs=`echo ${target_libraries} ${target_tools}`
188 build_configdirs=`echo ${build_libs} ${build_tools}`
190 m4_divert_text([PARSE_ARGS],
193 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
194 AC_MSG_ERROR([path to source, $srcdir, contains spaces])
195 m4_popdef([AS_MESSAGE_LOG_FD])dnl
198 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
201 ################################################################################
203 srcname="gnu development package"
205 # This gets set non-empty for some net releases of packages.
208 # Define is_cross_compiler to save on calls to 'test'.
210 if test x"${host}" = x"${target}" ; then
213 is_cross_compiler=yes
216 # Find the build and target subdir names.
218 # Be sure to cover against remnants of an in-tree build.
219 if test $srcdir != . && test -d $srcdir/host-${host_noncanonical}; then
220 AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
221 Use a pristine source tree when building in a separate tree])
224 # Skipdirs are removed silently.
226 # Noconfigdirs are removed loudly.
230 # Make sure we don't let GNU ld be added if we didn't want it.
231 if test x$with_gnu_ld = xno ; then
233 noconfigdirs="$noconfigdirs ld gold"
237 # Make sure we don't let GNU as be added if we didn't want it.
238 if test x$with_gnu_as = xno ; then
240 noconfigdirs="$noconfigdirs gas"
244 AC_ARG_WITH(system-zlib,
245 [AS_HELP_STRING([--with-system-zlib], [use installed libz])])
246 # Make sure we don't let ZLIB be added if we didn't want it.
247 if test x$with_system_zlib = xyes ; then
249 noconfigdirs="$noconfigdirs zlib"
252 # Don't compile the bundled readline/libreadline.a if --with-system-readline
254 if test x$with_system_readline = xyes ; then
255 noconfigdirs="$noconfigdirs readline"
259 [AS_HELP_STRING([--with-zstd], [Support zstd compressed debug sections (default=auto)])])
261 # some tools are so dependent upon X11 that if we're not building with X,
262 # it's not even worth trying to configure, much less build, that tool.
265 yes | "") ;; # the default value for this tree is that X11 is available
267 skipdirs="${skipdirs} tk itcl libgui"
268 # We won't be able to build gdbtk without X.
271 *) echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
274 # Some are only suitable for cross toolchains.
275 # Remove these if host=target.
276 cross_only="target-libgloss target-newlib target-opcodes"
278 case $is_cross_compiler in
279 no) skipdirs="${skipdirs} ${cross_only}" ;;
282 # If both --with-headers and --with-libs are specified, default to
284 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
285 && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
286 if test x"${with_newlib}" = x ; then
291 # Recognize --with-newlib/--without-newlib.
292 case ${with_newlib} in
293 no) skipdirs="${skipdirs} target-newlib" ;;
294 yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
297 AC_ARG_ENABLE(as-accelerator-for,
298 [AS_HELP_STRING([--enable-as-accelerator-for=ARG],
299 [build as offload target compiler.
300 Specify offload host triple by ARG])])
302 AC_ARG_ENABLE(offload-targets,
303 [AS_HELP_STRING([--enable-offload-targets=LIST],
304 [enable offloading to devices from comma-separated LIST of
305 TARGET[=DIR]. Use optional path to find offload target compiler
308 if test x"$enable_offload_targets" = x; then
309 AC_MSG_ERROR([no offload targets specified])
311 ], [enable_offload_targets=])
313 AC_ARG_ENABLE(offload-defaulted,
314 [AS_HELP_STRING([--enable-offload-defaulted]
315 [If enabled, configured but not installed offload compilers and
316 libgomp plugins are silently ignored. Useful for distribution
317 compilers where those are in separate optional packages.])],
318 [enable_offload_defaulted=$enableval],
319 [enable_offload_defaulted=])
321 # Handle --enable-gold, --enable-ld.
322 # --disable-gold [--enable-ld]
323 # Build only ld. Default option.
324 # --enable-gold [--enable-ld]
325 # Build both gold and ld. Install gold as "ld.gold", install ld
326 # as "ld.bfd" and "ld".
327 # --enable-gold=default [--enable-ld]
328 # Build both gold and ld. Install gold as "ld.gold" and "ld",
329 # install ld as "ld.bfd".
330 # --enable-gold[=default] --disable-ld
331 # Build only gold, which is then installed as both "ld.gold" and "ld".
332 # --enable-gold --enable-ld=default
333 # Build both gold (installed as "ld.gold") and ld (installed as "ld"
335 # In other words, ld is default
336 # --enable-gold=default --enable-ld=default
341 [AS_HELP_STRING([[--enable-gold[=ARG]]],
342 [build gold @<:@ARG={default,yes,no}@:>@])],
343 ENABLE_GOLD=$enableval,
345 case "${ENABLE_GOLD}" in
347 # Check for ELF target.
350 *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
351 | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
352 | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
353 | *-*-solaris2* | *-*-nto* | *-*-nacl* | *-*-haiku*)
355 *-*-linux*aout* | *-*-linux*oldld*)
363 if test "$is_elf" = "yes"; then
364 # Check for target supported by gold.
366 i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
367 | aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-*)
368 configdirs="$configdirs gold"
369 if test x${ENABLE_GOLD} = xdefault; then
380 AC_MSG_ERROR([invalid --enable-gold argument])
385 [AS_HELP_STRING([[--enable-ld[=ARG]]],
386 [build ld @<:@ARG={default,yes,no}@:>@])],
387 ENABLE_LD=$enableval,
390 case "${ENABLE_LD}" in
392 if test x${default_ld} != x; then
393 AC_MSG_ERROR([either gold or ld can be the default ld])
399 if test x${ENABLE_GOLD} != xyes; then
400 AC_MSG_WARN([neither ld nor gold are enabled])
402 configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
405 AC_MSG_ERROR([invalid --enable-ld argument])
409 AC_ARG_ENABLE(gprofng,
410 [AS_HELP_STRING([[--enable-gprofng[=ARG]]],
411 [build gprofng @<:@ARG={yes,no}@:>@])],
412 enable_gprofng=$enableval,
414 if test "$enable_gprofng" = "yes"; then
416 x86_64-*-linux* | i?86-*-linux* | aarch64-*-linux*)
417 configdirs="$configdirs gprofng"
424 # Decide the default method for compressing debug sections.
425 # Provide a configure time option to override our default.
426 AC_ARG_ENABLE(compressed_debug_sections,
427 [AS_HELP_STRING([--enable-compressed-debug-sections={all,gas,gold,ld,none}],
428 [Enable compressed debug sections for gas, gold or ld by
431 if test x"$enable_compressed_debug_sections" = xyes; then
432 AC_MSG_ERROR([no program with compressed debug sections specified])
434 ], [enable_compressed_debug_sections=])
436 # Select default compression algorithm.
437 AC_ARG_ENABLE(default_compressed_debug_sections_algorithm,
438 [AS_HELP_STRING([--enable-default-compressed-debug-sections-algorithm={zlib,zstd}],
439 [Default compression algorithm for --enable-compressed-debug-sections.])],
440 [], [default_compressed_debug_sections_algorithm=])
442 # Configure extra directories which are host specific
446 configdirs="$configdirs libtermcap" ;;
449 # A target can indicate whether a language isn't supported for some reason.
450 # Only spaces may be used in this macro; not newlines or tabs.
451 unsupported_languages=
453 # Remove more programs from consideration, based on the host or
454 # target this usually means that a port of the program doesn't
458 i[[3456789]]86-*-msdosdjgpp*)
459 noconfigdirs="$noconfigdirs tcl tk itcl"
463 # Default to --disable-year2038 until we can handle differences between
464 # projects that use gnulib (which understands year 2038) and projects that
466 AC_ARG_ENABLE(year2038,
467 AS_HELP_STRING([--enable-year2038],
468 [enable support for timestamps past the year 2038]),
469 ENABLE_YEAR2038=$enableval,
472 if test "${ENABLE_YEAR2038}" = "no" ; then
476 AC_ARG_ENABLE(libquadmath,
477 AS_HELP_STRING([--disable-libquadmath],
478 [do not build libquadmath directory]),
479 ENABLE_LIBQUADMATH=$enableval,
480 ENABLE_LIBQUADMATH=yes)
481 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
482 noconfigdirs="$noconfigdirs target-libquadmath"
486 AC_ARG_ENABLE(libquadmath-support,
487 AS_HELP_STRING([--disable-libquadmath-support],
488 [disable libquadmath support for Fortran]),
489 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
490 ENABLE_LIBQUADMATH_SUPPORT=yes)
491 enable_libquadmath_support=
492 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
493 enable_libquadmath_support=no
497 AC_ARG_ENABLE(libada,
498 [AS_HELP_STRING([--enable-libada], [build libada directory])],
499 ENABLE_LIBADA=$enableval,
501 if test "${ENABLE_LIBADA}" != "yes" ; then
502 noconfigdirs="$noconfigdirs gnattools"
505 AC_ARG_ENABLE(libgm2,
506 [AS_HELP_STRING([--enable-libgm2], [build libgm2 directory])],
507 ENABLE_LIBGM2=$enableval,
509 if test "${ENABLE_LIBGM2}" != "yes" ; then
510 noconfigdirs="$noconfigdirs gm2tools"
513 AC_ARG_ENABLE(libssp,
514 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
515 ENABLE_LIBSSP=$enableval,
518 AC_ARG_ENABLE(libstdcxx,
519 AS_HELP_STRING([--disable-libstdcxx],
520 [do not build libstdc++-v3 directory]),
521 ENABLE_LIBSTDCXX=$enableval,
522 ENABLE_LIBSTDCXX=default)
523 [if test "${ENABLE_LIBSTDCXX}" = "no" ; then
524 noconfigdirs="$noconfigdirs target-libstdc++-v3"
527 # Enable libgomp by default on hosted POSIX systems, and a few others.
528 if test x$enable_libgomp = x ; then
530 *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
532 *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
534 *-*-solaris2* | *-*-hpux11*)
536 *-*-darwin* | *-*-aix*)
538 nvptx*-*-* | amdgcn*-*-*)
541 noconfigdirs="$noconfigdirs target-libgomp"
546 # Disable libatomic on unsupported systems.
547 if test -d ${srcdir}/libatomic; then
548 if test x$enable_libatomic = x; then
549 AC_MSG_CHECKING([for libatomic support])
550 if (srcdir=${srcdir}/libatomic; \
551 . ${srcdir}/configure.tgt; \
552 test -n "$UNSUPPORTED")
555 noconfigdirs="$noconfigdirs target-libatomic"
562 # Disable libitm on unsupported systems.
563 if test -d ${srcdir}/libitm; then
564 if test x$enable_libitm = x; then
565 AC_MSG_CHECKING([for libitm support])
566 if (srcdir=${srcdir}/libitm; \
567 . ${srcdir}/configure.tgt; \
568 test -n "$UNSUPPORTED")
571 noconfigdirs="$noconfigdirs target-libitm"
578 # Disable libsanitizer on unsupported systems.
579 if test -d ${srcdir}/libsanitizer; then
580 if test x$enable_libsanitizer = x; then
581 AC_MSG_CHECKING([for libsanitizer support])
582 if (srcdir=${srcdir}/libsanitizer; \
583 . ${srcdir}/configure.tgt; \
584 test -n "$UNSUPPORTED")
587 noconfigdirs="$noconfigdirs target-libsanitizer"
594 # Disable libvtv on unsupported systems.
595 if test -d ${srcdir}/libvtv; then
596 if test x$enable_libvtv = x; then
597 AC_MSG_CHECKING([for libvtv support])
598 if (srcdir=${srcdir}/libvtv; \
599 . ${srcdir}/configure.tgt; \
600 test "$VTV_SUPPORTED" != "yes")
603 noconfigdirs="$noconfigdirs target-libvtv"
610 # Disable libquadmath for some systems.
613 noconfigdirs="$noconfigdirs target-libquadmath"
615 # libquadmath is unused on AIX and libquadmath build process use of
616 # LD_LIBRARY_PATH can break AIX bootstrap.
617 powerpc-*-aix* | rs6000-*-aix*)
618 noconfigdirs="$noconfigdirs target-libquadmath"
622 # Disable libssp for some systems.
625 # No hosted I/O support.
626 noconfigdirs="$noconfigdirs target-libssp"
629 noconfigdirs="$noconfigdirs target-libssp"
631 powerpc-*-aix* | rs6000-*-aix*)
632 noconfigdirs="$noconfigdirs target-libssp"
635 # No hosted I/O support.
636 noconfigdirs="$noconfigdirs target-libssp"
639 # libssp uses a misaligned load to trigger a fault, but the RL78
640 # doesn't fault for those - instead, it gives a build-time error
641 # for explicit misaligned loads.
642 noconfigdirs="$noconfigdirs target-libssp"
645 # No hosted I/O support.
646 noconfigdirs="$noconfigdirs target-libssp"
650 # Disable libstdc++-v3 for some systems.
651 # Allow user to override this if they pass --enable-libstdcxx
652 if test "${ENABLE_LIBSTDCXX}" = "default" ; then
655 # VxWorks uses the Dinkumware C++ library.
656 noconfigdirs="$noconfigdirs target-libstdc++-v3"
659 # Not ported/fails to build when using newlib.
660 noconfigdirs="$noconfigdirs target-libstdc++-v3"
663 # the C++ libraries don't build on top of CE's C libraries
664 noconfigdirs="$noconfigdirs target-libstdc++-v3"
667 noconfigdirs="$noconfigdirs target-libstdc++-v3"
670 noconfigdirs="$noconfigdirs target-libstdc++-v3"
673 noconfigdirs="$noconfigdirs target-libstdc++-v3"
678 # Disable C++ on systems where it is known to not work.
679 # For testing, you can override this with --enable-languages=c++.
680 case ,${enable_languages}, in
686 unsupported_languages="$unsupported_languages c++"
692 # Disable Objc on systems where it is known to not work.
693 # For testing, you can override this with --enable-languages=objc.
694 case ,${enable_languages}, in
700 unsupported_languages="$unsupported_languages objc"
706 # Disable D on systems where it is known to not work.
707 # For testing, you can override this with --enable-languages=d.
708 case ,${enable_languages}, in
714 unsupported_languages="$unsupported_languages d"
720 # Disable libphobos on unsupported systems.
721 # For testing, you can override this with --enable-libphobos.
722 if test -d ${srcdir}/libphobos; then
723 if test x$enable_libphobos = x; then
724 AC_MSG_CHECKING([for libphobos support])
725 if (srcdir=${srcdir}/libphobos; \
726 . ${srcdir}/configure.tgt; \
727 test "$LIBPHOBOS_SUPPORTED" != "yes")
730 noconfigdirs="$noconfigdirs target-libphobos"
737 # Disable Fortran for some systems.
740 # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
741 unsupported_languages="$unsupported_languages fortran"
744 unsupported_languages="$unsupported_languages fortran"
748 # Disable libffi for some systems.
752 i[[3456789]]86-*-darwin*)
754 x86_64-*-darwin[[912]]*)
757 noconfigdirs="$noconfigdirs target-libffi"
760 noconfigdirs="$noconfigdirs target-libffi"
763 noconfigdirs="$noconfigdirs target-libffi"
766 noconfigdirs="$noconfigdirs target-libffi"
769 noconfigdirs="$noconfigdirs target-libffi"
772 noconfigdirs="$noconfigdirs target-libffi"
775 noconfigdirs="$noconfigdirs target-libffi"
778 noconfigdirs="$noconfigdirs target-libffi"
781 noconfigdirs="$noconfigdirs target-libffi"
784 noconfigdirs="$noconfigdirs target-libffi"
787 noconfigdirs="$noconfigdirs target-libffi"
790 noconfigdirs="$noconfigdirs target-libffi"
793 noconfigdirs="$noconfigdirs target-libffi"
795 cris-*-* | crisv32-*-*)
799 *) # See PR46792 regarding target-libffi.
800 noconfigdirs="$noconfigdirs target-libffi";;
804 noconfigdirs="$noconfigdirs target-libffi"
809 noconfigdirs="$noconfigdirs target-libffi"
812 noconfigdirs="$noconfigdirs target-libffi"
814 i[[3456789]]86-w64-mingw*)
815 noconfigdirs="$noconfigdirs target-libffi"
817 i[[3456789]]86-*-mingw*)
818 noconfigdirs="$noconfigdirs target-libffi"
821 noconfigdirs="$noconfigdirs target-libffi"
824 noconfigdirs="$noconfigdirs target-libffi"
831 noconfigdirs="$noconfigdirs target-libffi"
834 noconfigdirs="$noconfigdirs target-libffi"
838 # Disable the go frontend on systems where it is known to not work. Please keep
839 # this in sync with contrib/config-list.mk.
841 *-*-darwin* | *-*-cygwin* | *-*-mingw* | bpf-* )
842 unsupported_languages="$unsupported_languages go"
846 # Only allow gdbserver on some systems.
847 if test -d ${srcdir}/gdbserver; then
848 if test x$enable_gdbserver = x; then
849 AC_MSG_CHECKING([for gdbserver support])
850 if (srcdir=${srcdir}/gdbserver; \
851 . ${srcdir}/configure.srv; \
852 test -n "$UNSUPPORTED")
855 noconfigdirs="$noconfigdirs gdbserver"
862 # Disable libgo for some systems where it is known to not work.
863 # For testing, you can easily override this with --enable-libgo.
864 if test x$enable_libgo = x; then
868 noconfigdirs="$noconfigdirs target-libgo"
870 *-*-cygwin* | *-*-mingw*)
871 noconfigdirs="$noconfigdirs target-libgo"
874 noconfigdirs="$noconfigdirs target-libgo"
879 # Default libgloss CPU subdirectory.
880 libgloss_dir="$target_cpu"
883 sh*-*-pe|mips*-*-pe|*arm-wince-pe)
892 cris-*-* | crisv32-*-*)
902 libgloss_dir=loongarch
904 m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
924 # Disable newlib and libgloss for various target OSes.
927 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
929 i[[3456789]]86-*-linux*)
930 # This section makes it possible to build newlib natively on linux.
931 # If we are using a cross compiler then don't configure newlib.
932 if test x${is_cross_compiler} != xno ; then
933 noconfigdirs="$noconfigdirs target-newlib"
935 noconfigdirs="$noconfigdirs target-libgloss"
936 # If we are not using a cross compiler, do configure newlib.
937 # Note however, that newlib will only be configured in this situation
938 # if the --with-newlib option has been given, because otherwise
939 # 'target-newlib' will appear in skipdirs.
941 i[[3456789]]86-*-rdos*)
942 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
944 sh*-*-pe|mips*-*-pe|arm-wince-pe)
945 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
948 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
951 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
954 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
957 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
960 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
963 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
966 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
968 *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
969 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
972 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
975 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
978 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
981 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
984 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
987 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
990 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
998 noconfigdirs="$noconfigdirs ld gas gdb gprof"
999 noconfigdirs="$noconfigdirs sim target-rda"
1004 noconfigdirs="$noconfigdirs ld gas gdb gprof"
1005 noconfigdirs="$noconfigdirs sim target-rda"
1008 noconfigdirs="$noconfigdirs ld gas gdb gprof"
1009 noconfigdirs="$noconfigdirs sim target-rda"
1011 i[[3456789]]86-*-darwin*)
1012 noconfigdirs="$noconfigdirs ld gprof"
1013 noconfigdirs="$noconfigdirs sim target-rda"
1015 x86_64-*-darwin[[912]]*)
1016 noconfigdirs="$noconfigdirs ld gas gprof"
1017 noconfigdirs="$noconfigdirs sim target-rda"
1020 noconfigdirs="$noconfigdirs ld gas gdb gprof"
1021 noconfigdirs="$noconfigdirs sim target-rda"
1026 if test "x$with_gmp" = x \
1027 && ! test -d ${srcdir}/gmp \
1028 && test -f /usr/local/include/gmp.h; then
1033 # Remove unsupported stuff on all kaOS configurations.
1034 noconfigdirs="$noconfigdirs target-libgloss"
1041 noconfigdirs="$noconfigdirs target-libgloss"
1044 noconfigdirs="$noconfigdirs target-libgloss"
1046 # The tpf target doesn't support gdb yet.
1048 noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
1051 noconfigdirs="$noconfigdirs target-rda"
1056 # ld works, but does not support shared libraries.
1057 # gas doesn't generate exception information.
1058 noconfigdirs="$noconfigdirs gas ld"
1061 noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
1064 # newlib is not 64 bit ready
1065 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1068 noconfigdirs="$noconfigdirs target-libobjc target-libbacktrace"
1070 sh*-*-pe|mips*-*-pe|*arm-wince-pe)
1071 noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
1074 noconfigdirs="$noconfigdirs sim"
1077 noconfigdirs="$noconfigdirs target-libgloss"
1080 noconfigdirs="$noconfigdirs ld target-libgloss"
1083 if test x${with_avrlibc} != xno; then
1084 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1087 c4x-*-* | tic4x-*-*)
1088 noconfigdirs="$noconfigdirs target-libgloss"
1091 noconfigdirs="$noconfigdirs target-libgloss gdb"
1094 noconfigdirs="$noconfigdirs target-libgloss"
1097 noconfigdirs="$noconfigdirs gdb"
1100 noconfigdirs="$noconfigdirs gdb"
1103 noconfigdirs="$noconfigdirs target-rda gprof"
1106 noconfigdirs="$noconfigdirs"
1109 noconfigdirs="$noconfigdirs target-libgloss"
1112 noconfigdirs="$noconfigdirs target-libgloss"
1114 hppa1.1-*-osf* | hppa1.1-*-bsd* )
1117 noconfigdirs="$noconfigdirs gdb"
1120 noconfigdirs="$noconfigdirs gdb ld"
1128 hppa*-*-openbsd* | \
1134 noconfigdirs="$noconfigdirs ld"
1137 noconfigdirs="$noconfigdirs gdb"
1140 # No gdb support yet.
1141 noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1144 # No ld support yet.
1145 noconfigdirs="$noconfigdirs gdb libgui itcl ld"
1148 # No ld support yet.
1149 noconfigdirs="$noconfigdirs libgui itcl ld"
1151 i[[3456789]]86-w64-mingw*)
1153 i[[3456789]]86-*-mingw*)
1154 target_configdirs="$target_configdirs target-winsup"
1157 target_configdirs="$target_configdirs target-libtermcap target-winsup"
1158 noconfigdirs="$noconfigdirs target-libgloss"
1159 # always build newlib if winsup directory is present.
1160 if test -d "$srcdir/winsup/cygwin"; then
1161 skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1162 elif test -d "$srcdir/newlib"; then
1163 echo "Warning: winsup/cygwin is missing so newlib can't be built."
1166 i[[3456789]]86-*-pe)
1167 noconfigdirs="$noconfigdirs target-libgloss"
1169 i[[3456789]]86-*-sco3.2v5*)
1170 # The linker does not yet know about weak symbols in COFF,
1171 # and is not configured to handle mixed ELF and COFF.
1172 noconfigdirs="$noconfigdirs ld target-libgloss"
1174 i[[3456789]]86-*-sco*)
1175 noconfigdirs="$noconfigdirs gprof target-libgloss"
1177 i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1178 noconfigdirs="$noconfigdirs target-libgloss"
1180 i[[3456789]]86-*-sysv4*)
1181 noconfigdirs="$noconfigdirs target-libgloss"
1183 i[[3456789]]86-*-beos*)
1184 noconfigdirs="$noconfigdirs gdb"
1186 i[[3456789]]86-*-rdos*)
1187 noconfigdirs="$noconfigdirs gdb"
1190 noconfigdirs="$noconfigdirs gdb"
1193 noconfigdirs="$noconfigdirs sim"
1196 noconfigdirs="$noconfigdirs ld gas gdb gprof sim"
1197 noconfigdirs="$noconfigdirs $target_libraries"
1200 noconfigdirs="$noconfigdirs gdb gprof"
1203 # copied from rs6000-*-* entry
1204 noconfigdirs="$noconfigdirs gprof"
1206 powerpc*-*-winnt* | powerpc*-*-pe*)
1207 target_configdirs="$target_configdirs target-winsup"
1208 noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1209 # always build newlib.
1210 skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1212 # This is temporary until we can link against shared libraries
1213 powerpcle-*-solaris*)
1214 noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1217 noconfigdirs="$noconfigdirs gdb"
1220 noconfigdirs="$noconfigdirs gprof"
1223 noconfigdirs="$noconfigdirs gprof"
1226 noconfigdirs="$noconfigdirs gprof"
1229 noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1232 noconfigdirs="$noconfigdirs gprof"
1234 mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1235 if test x$with_newlib = xyes; then
1236 noconfigdirs="$noconfigdirs gprof"
1240 noconfigdirs="$noconfigdirs gprof target-libgloss"
1243 noconfigdirs="$noconfigdirs gprof target-libgloss"
1246 noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1250 mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1251 | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1252 noconfigdirs="$noconfigdirs ld gas gprof"
1255 noconfigdirs="$noconfigdirs gprof"
1258 noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1265 noconfigdirs="$noconfigdirs target-libgloss" ;;
1269 if test x${is_cross_compiler} = xno ; then
1274 noconfigdirs="$noconfigdirs sim"
1276 tilepro*-*-* | tilegx*-*-*)
1277 noconfigdirs="$noconfigdirs sim"
1280 noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1283 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1286 noconfigdirs="$noconfigdirs ld"
1288 loongarch*-*-linux*)
1291 noconfigdirs="$noconfigdirs gprof"
1295 # If we aren't building newlib, then don't build libgloss, since libgloss
1296 # depends upon some newlib header files.
1297 case "${noconfigdirs}" in
1298 *target-libgloss*) ;;
1299 *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1302 # Work in distributions that contain no compiler tools, like Autoconf.
1303 host_makefile_frag=/dev/null
1304 if test -d ${srcdir}/config ; then
1306 i[[3456789]]86-*-msdosdjgpp*)
1307 host_makefile_frag="config/mh-djgpp"
1310 ACX_CHECK_CYGWIN_CAT_WORKS
1311 host_makefile_frag="config/mh-cygwin"
1314 host_makefile_frag="config/mh-mingw"
1317 host_makefile_frag="config/mh-alpha-linux"
1320 host_makefile_frag="config/mh-pa"
1323 host_makefile_frag="config/mh-pa"
1325 i?86-*-darwin[[89]]* | i?86-*-darwin1[[0-7]]* | powerpc*-*-darwin*)
1326 host_makefile_frag="config/mh-darwin"
1329 host_makefile_frag="config/mh-ppc-aix"
1332 host_makefile_frag="config/mh-ppc-aix"
1337 if test "${build}" != "${host}" ; then
1338 AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1339 AS_FOR_BUILD=${AS_FOR_BUILD-as}
1340 CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1341 CPP_FOR_BUILD="${CPP_FOR_BUILD-\$(CC_FOR_BUILD) -E}"
1342 CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1343 DSYMUTIL_FOR_BUILD=${DSYMUTIL_FOR_BUILD-dsymutil}
1344 GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1345 GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1346 GDC_FOR_BUILD=${GDC_FOR_BUILD-gdc}
1347 DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1348 LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1349 NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1350 RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1351 WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1352 WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1354 AR_FOR_BUILD="\$(AR)"
1355 AS_FOR_BUILD="\$(AS)"
1356 CC_FOR_BUILD="\$(CC)"
1357 CXX_FOR_BUILD="\$(CXX)"
1358 DSYMUTIL_FOR_BUILD="\$(DSYMUTIL)"
1359 GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1360 GOC_FOR_BUILD="\$(GOC)"
1361 GDC_FOR_BUILD="\$(GDC)"
1362 DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1363 LD_FOR_BUILD="\$(LD)"
1364 NM_FOR_BUILD="\$(NM)"
1365 RANLIB_FOR_BUILD="\$(RANLIB)"
1366 WINDRES_FOR_BUILD="\$(WINDRES)"
1367 WINDMC_FOR_BUILD="\$(WINDMC)"
1373 # We must set the default linker to the linker used by gcc for the correct
1374 # operation of libtool. If LD is not defined and we are using gcc, try to
1375 # set the LD default to the ld used by gcc.
1376 if test -z "$LD"; then
1377 if test "$GCC" = yes; then
1380 gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1382 gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1384 case $gcc_prog_ld in
1385 # Accept absolute paths.
1386 [[\\/]* | [A-Za-z]:[\\/]*)]
1387 LD="$gcc_prog_ld" ;;
1392 # Check whether -static-libstdc++ -static-libgcc is supported.
1394 if test "$GCC" = yes; then
1395 saved_LDFLAGS="$LDFLAGS"
1397 LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1398 AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1400 AC_LINK_IFELSE([AC_LANG_SOURCE([
1401 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1402 #error -static-libstdc++ not implemented
1405 [AC_MSG_RESULT([yes]); have_static_libs=yes],
1406 [AC_MSG_RESULT([no])])
1409 LDFLAGS="$saved_LDFLAGS"
1415 ACX_PROG_CMP_IGNORE_INITIAL
1417 AC_ARG_ENABLE([bootstrap],
1418 [AS_HELP_STRING([--enable-bootstrap],
1419 [enable bootstrapping @<:@yes if native build@:>@])],,
1420 enable_bootstrap=default)
1422 # Issue errors and warnings for invalid/strange bootstrap combinations.
1423 if test -r $srcdir/gcc/configure; then
1429 case "$have_compiler:$host:$target:$enable_bootstrap" in
1432 # Default behavior. Enable bootstrap if we have a compiler
1433 # and we are in a native configuration.
1434 yes:$build:$build:default)
1435 enable_bootstrap=yes ;;
1438 enable_bootstrap=no ;;
1440 # We have a compiler and we are in a native configuration, bootstrap is ok
1441 yes:$build:$build:yes)
1444 # Other configurations, but we have a compiler. Assume the user knows
1447 AC_MSG_WARN([trying to bootstrap a cross compiler])
1450 # No compiler: if they passed --enable-bootstrap explicitly, fail
1452 AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1454 # Fail if wrong command line
1456 AC_MSG_ERROR([invalid option for --enable-bootstrap])
1460 # When bootstrapping with GCC, build stage 1 in C++11 mode to ensure that a
1461 # C++11 compiler can still start the bootstrap. Otherwise, if building GCC,
1462 # require C++11 (or higher).
1463 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
1464 CXX="$CXX -std=c++11"
1465 elif test "$have_compiler" = yes; then
1466 AX_CXX_COMPILE_STDCXX(11)
1468 if test "${build}" != "${host}"; then
1469 AX_CXX_COMPILE_STDCXX(11, [], [], [_FOR_BUILD])
1473 AC_ARG_ENABLE([pgo-build],
1474 [AS_HELP_STRING([--enable-pgo-build[[=lto]]],
1475 [enable the PGO build])],
1476 [enable_pgo_build=$enableval],
1477 [enable_pgo_build=no])
1479 # Issue errors and warnings for invalid/strange PGO build combinations.
1480 case "$have_compiler:$host:$target:$enable_pgo_build" in
1483 # Allow the PGO build only if we aren't building a compiler and
1484 # we are in a native configuration.
1485 no:$build:$build:yes | no:$build:$build:lto) ;;
1487 # Disallow the PGO bootstrap if we are building a compiler.
1488 yes:*:*:yes | yes:*:*:lto)
1489 AC_MSG_ERROR([cannot perform the PGO bootstrap when building a compiler]) ;;
1492 AC_MSG_ERROR([invalid option for --enable-pgo-build])
1496 if test "$enable_pgo_build" != "no"; then
1497 AC_MSG_CHECKING([whether the compiler supports -fprofile-generate])
1498 old_CFLAGS="$CFLAGS"
1499 PGO_BUILD_GEN_CFLAGS="-fprofile-generate"
1500 CFLAGS="$CFLAGS $PGO_BUILD_CFLAGS"
1501 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int foo;])],,
1502 [PGO_BUILD_GEN_CFLAGS=])
1503 CFLAGS="$old_CFLAGS"
1504 if test -n "$PGO_BUILD_GEN_CFLAGS"; then
1505 AC_MSG_RESULT([yes])
1506 PGO_BUILD_USE_CFLAGS="-fprofile-use"
1509 AC_MSG_ERROR([cannot perform the PGO build without -fprofile-generate])
1512 if test "$enable_pgo_build" = "lto"; then
1513 AC_MSG_CHECKING([whether the compiler supports -flto=jobserver -ffat-lto-objects])
1514 old_CFLAGS="$CFLAGS"
1515 PGO_BUILD_LTO_CFLAGS="-flto=jobserver -ffat-lto-objects"
1516 CFLAGS="$CFLAGS $PGO_BUILD_LTO_CFLAGS"
1517 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int foo;])],,
1518 [PGO_BUILD_LTO_CFLAGS=])
1519 CFLAGS="$old_CFLAGS"
1520 if test -n "$PGO_BUILD_LTO_CFLAGS"; then
1521 AC_MSG_RESULT([yes])
1524 AC_MSG_WARN([LTO is disabled for the PGO build])
1528 AC_SUBST(PGO_BUILD_GEN_CFLAGS)
1529 AC_SUBST(PGO_BUILD_USE_CFLAGS)
1530 AC_SUBST(PGO_BUILD_LTO_CFLAGS)
1532 # Used for setting $lt_cv_objdir
1535 # Check for GMP, MPFR and MPC
1538 if test -d ${srcdir}/gcc ; then
1542 if test -d ${srcdir}/gdb ; then
1543 if test "x$enable_gdb" != xno; then
1548 gmplibs="-lmpfr -lgmp"
1549 if test x"$require_mpc" = "xyes" ; then
1550 gmplibs="-lmpc $gmplibs"
1555 # Specify a location for mpc
1556 # check for this first so it ends up on the link line before mpfr.
1558 [AS_HELP_STRING([--with-mpc=PATH],
1559 [specify prefix directory for installed MPC package.
1560 Equivalent to --with-mpc-include=PATH/include
1561 plus --with-mpc-lib=PATH/lib])])
1562 AC_ARG_WITH(mpc-include,
1563 [AS_HELP_STRING([--with-mpc-include=PATH],
1564 [specify directory for installed MPC include files])])
1565 AC_ARG_WITH(mpc-lib,
1566 [AS_HELP_STRING([--with-mpc-lib=PATH],
1567 [specify directory for the installed MPC library])])
1569 if test "x$with_mpc" != x; then
1570 gmplibs="-L$with_mpc/lib $gmplibs"
1571 gmpinc="-I$with_mpc/include $gmpinc"
1573 if test "x$with_mpc_include" != x; then
1574 gmpinc="-I$with_mpc_include $gmpinc"
1576 if test "x$with_mpc_lib" != x; then
1577 gmplibs="-L$with_mpc_lib $gmplibs"
1579 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1580 gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1581 gmpinc='-I$$s/mpc/src '"$gmpinc"
1582 # Do not test the mpc version. Assume that it is sufficient, since
1583 # it is in the source tree, and the library has not been built yet
1584 # but it would be included on the link line in the version check below
1585 # hence making the test fail.
1589 # Specify a location for mpfr
1590 # check for this first so it ends up on the link line before gmp.
1592 [AS_HELP_STRING([--with-mpfr=PATH],
1593 [specify prefix directory for installed MPFR package.
1594 Equivalent to --with-mpfr-include=PATH/include
1595 plus --with-mpfr-lib=PATH/lib])])
1596 AC_ARG_WITH(mpfr-include,
1597 [AS_HELP_STRING([--with-mpfr-include=PATH],
1598 [specify directory for installed MPFR include files])])
1599 AC_ARG_WITH(mpfr-lib,
1600 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1601 [specify directory for the installed MPFR library])])
1603 if test "x$with_mpfr" != x; then
1604 gmplibs="-L$with_mpfr/lib $gmplibs"
1605 gmpinc="-I$with_mpfr/include $gmpinc"
1607 if test "x$with_mpfr_include" != x; then
1608 gmpinc="-I$with_mpfr_include $gmpinc"
1610 if test "x$with_mpfr_lib" != x; then
1611 gmplibs="-L$with_mpfr_lib $gmplibs"
1613 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1614 # MPFR v3.1.0 moved the sources into a src sub-directory.
1615 if ! test -d ${srcdir}/mpfr/src; then
1617 Building GCC with MPFR in the source tree is only handled for MPFR 3.1.0+.])
1619 gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1620 gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1621 extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1622 # Do not test the mpfr version. Assume that it is sufficient, since
1623 # it is in the source tree, and the library has not been built yet
1624 # but it would be included on the link line in the version check below
1625 # hence making the test fail.
1629 # Specify a location for gmp
1631 [AS_HELP_STRING([--with-gmp=PATH],
1632 [specify prefix directory for the installed GMP package.
1633 Equivalent to --with-gmp-include=PATH/include
1634 plus --with-gmp-lib=PATH/lib])])
1635 AC_ARG_WITH(gmp-include,
1636 [AS_HELP_STRING([--with-gmp-include=PATH],
1637 [specify directory for installed GMP include files])])
1638 AC_ARG_WITH(gmp-lib,
1639 [AS_HELP_STRING([--with-gmp-lib=PATH],
1640 [specify directory for the installed GMP library])])
1643 if test "x$with_gmp" != x; then
1644 gmplibs="-L$with_gmp/lib $gmplibs"
1645 gmpinc="-I$with_gmp/include $gmpinc"
1647 if test "x$with_gmp_include" != x; then
1648 gmpinc="-I$with_gmp_include $gmpinc"
1650 if test "x$with_gmp_lib" != x; then
1651 gmplibs="-L$with_gmp_lib $gmplibs"
1653 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1654 gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1655 gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1656 extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1657 extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1658 extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1659 # Do not test the gmp version. Assume that it is sufficient, since
1660 # it is in the source tree, and the library has not been built yet
1661 # but it would be included on the link line in the version check below
1662 # hence making the test fail.
1666 if test "x$require_gmp" = xyes && test "x$have_gmp" = xno; then
1668 saved_CFLAGS="$CFLAGS"
1669 CFLAGS="$CFLAGS $gmpinc"
1670 # Check for the recommended and required versions of GMP.
1671 AC_MSG_CHECKING([for the correct version of gmp.h])
1672 AC_TRY_COMPILE([#include "gmp.h"],[
1673 #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1674 #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1675 #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1678 ], [AC_TRY_COMPILE([#include <gmp.h>],[
1679 #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1680 #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1681 #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1684 ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1685 [AC_MSG_RESULT([no]); have_gmp=no])
1687 # If we have GMP, check the MPFR version.
1688 if test x"$have_gmp" = xyes; then
1689 # Check for the recommended and required versions of MPFR.
1690 AC_MSG_CHECKING([for the correct version of mpfr.h])
1691 AC_TRY_COMPILE([#include <gmp.h>
1692 #include <mpfr.h>],[
1693 #if MPFR_VERSION < MPFR_VERSION_NUM(3,1,0)
1696 ], [AC_TRY_COMPILE([#include <gmp.h>
1697 #include <mpfr.h>],[
1698 #if MPFR_VERSION < MPFR_VERSION_NUM(3,1,6)
1701 ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1702 [AC_MSG_RESULT([no]); have_gmp=no])
1705 # Check for the MPC header version.
1706 if test "x$require_mpc" = xyes && test x"$have_gmp" = xyes ; then
1707 # Check for the recommended and required versions of MPC.
1708 AC_MSG_CHECKING([for the correct version of mpc.h])
1709 AC_TRY_COMPILE([#include <mpc.h>],[
1710 #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1713 ], [AC_TRY_COMPILE([#include <mpc.h>],[
1714 #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1717 ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1718 [AC_MSG_RESULT([no]); have_gmp=no])
1721 # Now check the MPFR library.
1722 if test x"$have_gmp" = xyes; then
1724 LIBS="$LIBS $gmplibs"
1725 AC_MSG_CHECKING([for the correct version of the gmp/mpfr libraries])
1726 AC_TRY_LINK([#include <mpfr.h>],[
1732 mpfr_atan2 (n, n, x, MPFR_RNDN);
1733 mpfr_erfc (n, x, MPFR_RNDN);
1734 mpfr_subnormalize (x, t, MPFR_RNDN);
1737 ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1741 # Now check the MPC library
1742 if test "x$require_mpc" = xyes && test x"$have_gmp" = xyes; then
1744 LIBS="$LIBS $gmplibs"
1745 AC_MSG_CHECKING([for the correct version of the mpc libraries])
1746 AC_TRY_LINK([#include <mpc.h>],[
1749 mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1750 mpc_cosh (c, c, MPC_RNDNN);
1751 mpc_pow (c, c, c, MPC_RNDNN);
1752 mpc_acosh (c, c, MPC_RNDNN);
1754 ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1758 CFLAGS="$saved_CFLAGS"
1760 # The library versions listed in the error message below should match
1761 # the HARD-minimums enforced above.
1762 if test x$have_gmp != xyes; then
1763 if test -d ${srcdir}/gcc ; then
1764 AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 3.1.0+ and MPC 0.8.0+.
1765 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1766 their locations. Source code for these libraries can be found at
1767 their respective hosting sites as well as at
1768 https://gcc.gnu.org/pub/gcc/infrastructure/. See also
1769 http://gcc.gnu.org/install/prerequisites.html for additional info. If
1770 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1771 make sure that you have installed both the libraries and the header
1772 files. They may be located in separate packages.])
1774 AC_MSG_ERROR([Building GDB requires GMP 4.2+, and MPFR 3.1.0+.
1775 Try the --with-gmp and/or --with-mpfr options to specify
1776 their locations. If you obtained GMP and/or MPFR from a vendor
1777 distribution package, make sure that you have installed both the libraries
1778 and the header files. They may be located in separate packages.])
1783 # Flags needed for both GMP, MPFR and/or MPC.
1786 AC_SUBST(extra_mpfr_configure_flags)
1787 AC_SUBST(extra_mpc_gmp_configure_flags)
1788 AC_SUBST(extra_mpc_mpfr_configure_flags)
1789 AC_SUBST(extra_isl_gmp_configure_flags)
1791 # Libraries to use for stage1 or when not bootstrapping.
1792 AC_ARG_WITH(stage1-libs,
1793 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1794 [if test "$withval" = "no" -o "$withval" = "yes"; then
1797 stage1_libs=$withval
1800 AC_SUBST(stage1_libs)
1802 # Whether or not to use -static-libstdc++ and -static-libgcc. The
1803 # default is yes if gcc is being built; no otherwise. The reason for
1804 # this default is that gdb is sometimes linked against GNU Source
1805 # Highlight, which is a shared library that uses C++ exceptions. In
1806 # this case, -static-libstdc++ will cause crashes.
1807 AC_ARG_WITH(static-standard-libraries,
1808 [AS_HELP_STRING([--with-static-standard-libraries],
1809 [use -static-libstdc++ and -static-libgcc (default=auto)])],
1810 [], [with_static_standard_libraries=auto])
1811 if test "$with_static_standard_libraries" = auto; then
1812 with_static_standard_libraries=$have_compiler
1815 # Linker flags to use for stage1 or when not bootstrapping.
1816 AC_ARG_WITH(stage1-ldflags,
1817 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1818 [if test "$withval" = "no" -o "$withval" = "yes"; then
1821 stage1_ldflags=$withval
1824 # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1825 # if supported. But if the user explicitly specified the libraries to use,
1826 # trust that they are doing what they want.
1827 if test "$with_static_standard_libraries" = yes -a "$stage1_libs" = "" \
1828 -a "$have_static_libs" = yes; then
1829 stage1_ldflags="-static-libstdc++ -static-libgcc"
1831 AC_SUBST(stage1_ldflags)
1833 # Libraries to use for stage2 and later builds.
1834 AC_ARG_WITH(boot-libs,
1835 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1836 [if test "$withval" = "no" -o "$withval" = "yes"; then
1839 poststage1_libs=$withval
1842 AC_SUBST(poststage1_libs)
1844 # Linker flags to use for stage2 and later builds.
1845 AC_ARG_WITH(boot-ldflags,
1846 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1847 [linker flags for stage2 and later])],
1848 [if test "$withval" = "no" -o "$withval" = "yes"; then
1851 poststage1_ldflags=$withval
1853 [poststage1_ldflags=
1854 # In stages 2 and 3, default to linking libstdc++ and libgcc
1855 # statically. But if the user explicitly specified the libraries to
1856 # use, trust that they are doing what they want.
1857 if test "$poststage1_libs" = ""; then
1858 poststage1_ldflags="-static-libstdc++ -static-libgcc"
1861 *-darwin2* | *-darwin1[[56789]]*)
1862 # For these versions, we default to using embedded rpaths.
1863 if test "x$enable_darwin_at_rpath" != "xno"; then
1864 poststage1_ldflags="$poststage1_ldflags -nodefaultrpaths"
1868 # For these versions, we only use embedded rpaths on demand.
1869 if test "x$enable_darwin_at_rpath" = "xyes"; then
1870 poststage1_ldflags="$poststage1_ldflags -nodefaultrpaths"
1874 AC_SUBST(poststage1_ldflags)
1876 # GCC GRAPHITE dependency isl.
1877 # Basic setup is inlined here, actual checks are in config/isl.m4
1882 [Specify prefix directory for the installed isl package.
1883 Equivalent to --with-isl-include=PATH/include
1884 plus --with-isl-lib=PATH/lib])])
1886 # Treat --without-isl as a request to disable
1887 # GRAPHITE support and skip all following checks.
1888 if test "x$with_isl" != "xno"; then
1890 dnl Provide configure switches and initialize islinc & isllibs
1891 dnl with user input.
1893 dnl The versions of isl that work for Graphite
1895 dnl Only execute fail-action, if isl has been requested.
1897 AC_MSG_ERROR([Unable to find a usable isl. See config.log for details.])])
1900 # If the isl check failed, disable builds of in-tree variant of isl
1901 if test "x$with_isl" = xno ||
1902 test "x$gcc_cv_isl" = xno; then
1903 noconfigdirs="$noconfigdirs isl"
1910 # Check for LTO support.
1912 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1913 enable_lto=$enableval,
1914 enable_lto=yes; default_enable_lto=yes)
1916 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1917 build_lto_plugin=yes
1918 ],[if test x"$default_enable_lto" = x"yes" ; then
1920 *-apple-darwin[[912]]* | *-cygwin* | *-mingw* | *djgpp*) ;;
1921 # On other non-ELF platforms, LTO has yet to be validated.
1925 # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1926 # It would also be nice to check the binutils support, but we don't
1927 # have gcc_GAS_CHECK_FEATURE available here. For now, we'll just
1928 # warn during gcc/ subconfigure; unless you're bootstrapping with
1929 # -flto it won't be needed until after installation anyway.
1931 *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
1932 *) if test x"$enable_lto" = x"yes"; then
1933 AC_MSG_ERROR([LTO support is not enabled for this target.])
1938 # Among non-ELF, only Windows platforms support the lto-plugin so far.
1939 # Build it unless LTO was explicitly disabled.
1941 *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1946 AC_ARG_ENABLE(linker-plugin-configure-flags,
1947 [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1948 [additional flags for configuring linker plugins @<:@none@:>@])],
1949 extra_linker_plugin_configure_flags=$enableval,
1950 extra_linker_plugin_configure_flags=)
1951 AC_SUBST(extra_linker_plugin_configure_flags)
1952 AC_ARG_ENABLE(linker-plugin-flags,
1953 [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1954 [additional flags for configuring and building linker plugins @<:@none@:>@])],
1955 extra_linker_plugin_flags=$enableval,
1956 extra_linker_plugin_flags=)
1957 AC_SUBST(extra_linker_plugin_flags)
1959 # Handle --enable-host-pie
1960 # If host PIE executables are the default (or must be forced on) for some host,
1961 # we must pass that configuration to the gcc directory.
1963 AC_ARG_ENABLE(host-pie,
1964 [AS_HELP_STRING([--enable-host-pie],
1965 [build position independent host executables])],
1966 [host_pie=$enableval
1969 if test x$host_pie != xyes ; then
1970 # for Darwin20+ this is required.
1971 AC_MSG_WARN([PIE executables are required for the configured host, host-pie setting ignored.])
1973 gcc_host_pie=--enable-host-pie
1979 # Default to PIE (mandatory for aarch64).
1981 gcc_host_pie=--enable-host-pie
1987 AC_SUBST(gcc_host_pie)
1989 # Enable --enable-host-shared.
1990 # Checked early to determine whether jit is an 'all' language
1991 AC_ARG_ENABLE(host-shared,
1992 [AS_HELP_STRING([--enable-host-shared],
1993 [build host code as shared libraries])],
1994 [host_shared=$enableval
1996 x86_64-*-darwin* | aarch64-*-darwin*)
1997 if test x$host_shared != xyes ; then
1998 # PIC is the default, and actually cannot be switched off.
1999 AC_MSG_WARN([PIC code is required for the configured host; host-shared setting ignored.])
2003 if test x$host_pie = xyes -a x$host_shared != xyes ; then
2004 AC_MSG_WARN([PIC code is required for PIE host executables host-shared setting ignored.])
2010 # 64B x86_64 and Aarch64 Darwin default to PIC.
2011 x86_64-*-darwin* | aarch64-*-darwin*) host_shared=yes ;;
2012 # 32B and powerpc64 Darwin must use PIC to link PIE exes.
2013 *-*-darwin*) host_shared=$host_pie ;;
2017 AC_SUBST(host_shared)
2019 if test x$host_shared = xyes; then
2022 # Since host shared is the default for 64b Darwin, and also enabled for
2023 # host_pie, ensure that we present the PIE flag when host_pie is active.
2024 if test x$host_pie = xyes; then
2032 elif test x$host_pie = xyes; then
2040 # Rust requires -ldl and -lpthread if you are using an old glibc that does not include them by
2041 # default, so we check for them here
2042 # We are doing the test here and not in the gcc/configure to be able to nicely disable the
2043 # build of the Rust frontend in case a dep is missing.
2044 missing_rust_dynlibs=none
2048 AC_SEARCH_LIBS([dlopen], [dl])
2049 AC_SEARCH_LIBS([pthread_create], [pthread])
2053 if test "$ac_cv_search_dlopen" = no; then
2054 missing_rust_dynlibs="libdl"
2057 if test "$ac_cv_search_pthread_create" = no; then
2058 missing_rust_dynlibs="$missing_rust_dynlibs, libpthread"
2061 AC_SUBST(CRAB1_LIBS, "$CRAB1_LIBS")
2063 # If we are building PIC/PIE host executables, and we are building dependent
2064 # libs (e.g. GMP) in-tree those libs need to be configured to generate PIC
2067 if test "$host_shared" = "yes" -o "$host_pie" = "yes"; then
2068 host_libs_picflag='--with-pic'
2070 AC_SUBST(host_libs_picflag)
2072 # By default, C and C++ are the only stage 1 languages.
2073 stage1_languages=,c,
2075 # Target libraries that we bootstrap.
2076 bootstrap_target_libs=,target-libgcc,
2078 # Figure out what language subdirectories are present.
2079 # Look if the user specified --enable-languages="..."; if not, use
2080 # the environment variable $LANGUAGES if defined. $LANGUAGES might
2082 # NB: embedded tabs in this IF block -- do not untabify
2083 if test -d ${srcdir}/gcc; then
2084 if test x"${enable_languages+set}" != xset; then
2085 if test x"${LANGUAGES+set}" = xset; then
2086 enable_languages="${LANGUAGES}"
2087 echo configure.ac: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
2089 enable_languages=default
2092 if test x"${enable_languages}" = x ||
2093 test x"${enable_languages}" = xyes;
2095 echo configure.ac: --enable-languages needs at least one language argument 1>&2
2099 enable_languages=`echo "${enable_languages}" | sed -e 's/[[ ,]][[ ,]]*/,/g' -e 's/,$//'`
2101 # 'f95' is the old name for the 'fortran' language. We issue a warning
2102 # and make the substitution.
2103 case ,${enable_languages}, in
2105 echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
2106 enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
2110 # If bootstrapping, C++ must be enabled.
2111 case ",$enable_languages,:$enable_bootstrap" in
2114 if test -f ${srcdir}/gcc/cp/config-lang.in; then
2115 enable_languages="${enable_languages},c++"
2117 AC_MSG_ERROR([bootstrapping requires c++ sources])
2122 # First scan to see if an enabled language requires some other language.
2123 # We assume that a given config-lang.in will list all the language
2124 # front ends it requires, even if some are required indirectly.
2125 for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
2126 case ${lang_frag} in
2128 # The odd quoting in the next line works around
2129 # an apparent bug in bash 1.12 on linux.
2130 ${srcdir}/gcc/[[*]]/config-lang.in) ;;
2132 # From the config-lang.in, get $language, $lang_requires, and
2133 # $lang_requires_boot_languages.
2136 lang_requires_boot_languages=
2137 # set srcdir during sourcing lang_frag to the gcc dir.
2138 # Sadly overriding srcdir on the . line doesn't work in plain sh as it
2139 # pollutes this shell
2140 saved_srcdir=${srcdir}
2141 srcdir=${srcdir}/gcc . ${lang_frag}
2142 srcdir=${saved_srcdir}
2143 for other in ${lang_requires} ${lang_requires_boot_languages}; do
2144 case ,${enable_languages}, in
2149 echo " \`$other' language required by \`$language'; enabling" 1>&2
2150 enable_languages="${enable_languages},${other}"
2154 for other in ${lang_requires_boot_languages} ; do
2155 if test "$other" != "c"; then
2156 case ,${enable_stage1_languages}, in
2161 case ,${enable_languages}, in
2163 echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
2164 enable_stage1_languages="$enable_stage1_languages,${other}"
2175 new_enable_languages=,c,
2177 # If LTO is enabled, add the LTO front end.
2178 if test "$enable_lto" = "yes" ; then
2179 case ,${enable_languages}, in
2181 *) enable_languages="${enable_languages},lto" ;;
2183 if test "${build_lto_plugin}" = "yes" ; then
2184 configdirs="$configdirs lto-plugin"
2188 # If we're building an offloading compiler, add the LTO front end.
2189 if test x"$enable_as_accelerator_for" != x ; then
2190 case ,${enable_languages}, in
2192 *) enable_languages="${enable_languages},lto" ;;
2196 missing_languages=`echo ",$enable_languages," | sed -e s/,default,/,/ -e s/,all,/,/ -e s/,c,/,/ `
2197 potential_languages=,c,
2199 enabled_target_libs=
2200 disabled_target_libs=
2202 for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
2203 case ${lang_frag} in
2205 # The odd quoting in the next line works around
2206 # an apparent bug in bash 1.12 on linux.
2207 ${srcdir}/gcc/[[*]]/config-lang.in) ;;
2209 # From the config-lang.in, get $language, $target_libs,
2210 # $lang_dirs, $boot_language, and $build_by_default
2216 build_by_default=yes
2217 # set srcdir during sourcing. See above about save & restore
2218 saved_srcdir=${srcdir}
2219 srcdir=${srcdir}/gcc . ${lang_frag}
2220 srcdir=${saved_srcdir}
2221 if test x${language} = x; then
2222 echo "${lang_frag} doesn't set \$language." 1>&2
2226 if test "$language" = "c++"; then
2231 # C is always enabled, so no need to add it again
2232 if test "$language" != "c"; then
2233 case ,${enable_languages}, in
2235 # Language was explicitly selected; include it
2239 # All languages are enabled
2243 # 'default' was selected, select it if it is a default language
2244 add_this_lang=${build_by_default}
2249 # Disable languages that need other directories if these aren't available.
2250 for i in $subdir_requires; do
2251 test -f "$srcdir/gcc/$i/config-lang.in" && continue
2252 case ${add_this_lang} in
2254 # Specifically requested language; tell them.
2255 AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
2258 AC_MSG_WARN([The gcc/$i directory contains parts of $language but is missing])
2259 add_this_lang=unsupported
2263 add_this_lang=unsupported
2268 # Disable Ada if no preexisting GNAT is available.
2269 case ${add_this_lang}:${language}:${have_gnat} in
2271 # Specifically requested language; tell them.
2272 AC_MSG_ERROR([GNAT is required to build $language])
2275 AC_MSG_WARN([GNAT is required to build $language])
2276 add_this_lang=unsupported
2280 add_this_lang=unsupported
2284 # Disable D if no preexisting GDC is available.
2285 case ${add_this_lang}:${language}:${have_gdc} in
2287 # Specifically requested language; tell them.
2288 AC_MSG_ERROR([GDC is required to build $language])
2291 AC_MSG_WARN([GDC is required to build $language])
2292 add_this_lang=unsupported
2296 add_this_lang=unsupported
2300 # Disable Rust if we are missing some required C libraries for the Rust runtime.
2301 case ${add_this_lang}:${language}:${missing_rust_dynlibs} in
2303 # Nothing to do - we're not missing any C libraries
2306 AC_MSG_ERROR([some C libraries are required to build $language: $missing_rust_dynlibs])
2307 add_this_lang=unsupported
2310 AC_MSG_WARN([some C libraries are required to build $language: $missing_rust_dynlibs])
2311 add_this_lang=unsupported
2315 add_this_lang=unsupported
2319 # Disable jit if -enable-host-shared not specified
2320 # but not if building for Mingw. All code in Windows
2321 # is position independent code (PIC).
2325 case ${add_this_lang}:${language}:${host_shared} in
2327 # PR jit/64780: explicitly specify --enable-host-shared
2329 Enabling language "jit" requires --enable-host-shared.
2331 --enable-host-shared typically slows the rest of the compiler down by
2332 a few %, so you must explicitly enable it.
2334 If you want to build both the jit and the regular compiler, it is often
2335 best to do this via two separate configure/builds, in separate
2336 directories, to avoid imposing the performance cost of
2337 --enable-host-shared on the regular compiler.])
2340 AC_MSG_WARN([--enable-host-shared required to build $language])
2341 add_this_lang=unsupported
2345 add_this_lang=unsupported
2351 # Pre-conditions to consider whether cargo being supported.
2352 if test x"$have_cargo" = xyes \
2353 && test x"$build" != x"$host"; then
2354 # Until <https://github.com/Rust-GCC/gccrs/issues/2898>
2355 # "'cargo' should build for the host system" is resolved:
2356 AC_MSG_WARN([use of cargo not yet supported here in Canadian cross configurations])
2359 # Assume that cargo-produced object files are compatible with what
2360 # we're going to build here.
2363 # Disable Rust if cargo is unavailable.
2364 case ${add_this_lang}:${language}:${have_cargo} in
2366 # Specifically requested language; tell them.
2367 AC_MSG_ERROR([cargo is required to build $language])
2370 AC_MSG_WARN([cargo is required to build $language])
2371 add_this_lang=unsupported
2375 add_this_lang=unsupported
2380 # Disable a language that is unsupported by the target.
2381 case "${add_this_lang}: $unsupported_languages " in
2385 AC_MSG_WARN([${language} not supported for this target])
2386 add_this_lang=unsupported
2390 case $add_this_lang in
2392 # Remove language-dependent dirs.
2393 disabled_target_libs="$disabled_target_libs $target_libs"
2394 noconfigdirs="$noconfigdirs $lang_dirs"
2397 # Remove language-dependent dirs; still show language as supported.
2398 disabled_target_libs="$disabled_target_libs $target_libs"
2399 noconfigdirs="$noconfigdirs $lang_dirs"
2400 potential_languages="${potential_languages}${language},"
2403 new_enable_languages="${new_enable_languages}${language},"
2404 potential_languages="${potential_languages}${language},"
2405 missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
2406 enabled_target_libs="$enabled_target_libs $target_libs"
2407 case "${boot_language}:,$enable_stage1_languages," in
2408 yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
2409 # Add to (comma-separated) list of stage 1 languages.
2410 case ",$stage1_languages," in
2411 *,$language,* | ,yes, | ,all,) ;;
2412 *) stage1_languages="${stage1_languages}${language}," ;;
2414 # We need to bootstrap any supporting libraries.
2415 bootstrap_target_libs=`echo "${bootstrap_target_libs}${target_libs}," | sed "s/ /,/g"`
2424 # Add target libraries which are only needed for disabled languages
2426 if test -n "$disabled_target_libs"; then
2427 for dir in $disabled_target_libs; do
2428 case " $enabled_target_libs " in
2430 *) noconfigdirs="$noconfigdirs $dir" ;;
2435 AC_ARG_ENABLE(stage1-languages,
2436 [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
2437 [choose additional languages to build during
2438 stage1. Mostly useful for compiler development])],
2439 [case ,${enable_stage1_languages}, in
2441 # Set it to something that will have no effect in the loop below
2442 enable_stage1_languages=c ;;
2444 enable_stage1_languages=`echo $new_enable_languages | \
2445 sed -e "s/^,//" -e "s/,$//" ` ;;
2447 enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2448 sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2451 # Add "good" languages from enable_stage1_languages to stage1_languages,
2452 # while "bad" languages go in missing_languages. Leave no duplicates.
2453 for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2454 case $potential_languages in
2456 case $stage1_languages in
2458 *) stage1_languages="$stage1_languages$i," ;;
2461 case $missing_languages in
2463 *) missing_languages="$missing_languages$i," ;;
2468 # Remove leading/trailing commas that were added for simplicity
2469 potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2470 missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2471 stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2472 new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2474 if test "x$missing_languages" != x; then
2476 The following requested languages could not be built: ${missing_languages}
2477 Supported languages are: ${potential_languages}])
2479 if test "x$new_enable_languages" != "x$enable_languages"; then
2480 echo The following languages will be built: ${new_enable_languages}
2481 enable_languages="$new_enable_languages"
2484 AC_SUBST(stage1_languages)
2485 ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2488 # Handle --disable-<component> generically.
2489 for dir in $configdirs $build_configdirs $target_configdirs ; do
2490 dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2491 varname=`echo $dirname | sed -e s/+/_/g`
2492 if eval test x\${enable_${varname}} "=" xno ; then
2493 noconfigdirs="$noconfigdirs $dir"
2497 # Check for Boehm's garbage collector
2498 AC_ARG_ENABLE(objc-gc,
2499 [AS_HELP_STRING([--enable-objc-gc],
2500 [enable use of Boehm's garbage collector with the
2501 GNU Objective-C runtime])])
2502 AC_ARG_WITH([target-bdw-gc],
2503 [AS_HELP_STRING([--with-target-bdw-gc=PATHLIST],
2504 [specify prefix directory for installed bdw-gc package.
2505 Equivalent to --with-target-bdw-gc-include=PATH/include
2506 plus --with-target-bdw-gc-lib=PATH/lib])])
2507 AC_ARG_WITH([target-bdw-gc-include],
2508 [AS_HELP_STRING([--with-target-bdw-gc-include=PATHLIST],
2509 [specify directories for installed bdw-gc include files])])
2510 AC_ARG_WITH([target-bdw-gc-lib],
2511 [AS_HELP_STRING([--with-target-bdw-gc-lib=PATHLIST],
2512 [specify directories for installed bdw-gc library])])
2514 case ,${enable_languages},:${enable_objc_gc} in *,objc,*:yes|*,objc,*:auto)
2515 AC_MSG_CHECKING([for bdw garbage collector])
2516 if test "x$with_target_bdw_gc$with_target_bdw_gc_include$with_target_bdw_gc_lib" = x; then
2517 dnl no bdw-gw options, assume default locations
2518 AC_MSG_RESULT([using bdw-gc in default locations])
2520 dnl bdw-gw options, first error checking, complete checking in libobjc
2521 if test "x$with_target_bdw_gc_include" = x && test "x$with_target_bdw_gc_lib" != x; then
2522 AC_MSG_ERROR([found --with-target-bdw-gc-lib but --with-target-bdw-gc-include missing])
2523 elif test "x$with_target_bdw_gc_include" != x && test "x$with_target_bdw_gc_lib" = x; then
2524 AC_MSG_ERROR([found --with-target-bdw-gc-include but --with-target-bdw-gc-lib missing])
2526 AC_MSG_RESULT([using paths configured with --with-target-bdw-gc options])
2531 # Disable libitm, libsanitizer, libvtv if we're not building C++
2532 case ,${enable_languages}, in
2534 # Disable libitm, libsanitizer if we're not building libstdc++
2535 case "${noconfigdirs}" in
2536 *target-libstdc++-v3*)
2537 noconfigdirs="$noconfigdirs target-libitm target-libsanitizer"
2543 noconfigdirs="$noconfigdirs target-libitm target-libsanitizer target-libvtv"
2547 case ,${enable_languages}, in
2549 case " ${noconfigdirs} " in
2550 *\ target-libstdc++-v3\ *)
2551 # Disable target libgrust if we're not building target libstdc++.
2552 noconfigdirs="$noconfigdirs target-libgrust"
2558 # If gcc/ is not in the source tree then we'll not be building a
2559 # target compiler, assume in that case we don't want to build any
2560 # target libraries or tools.
2562 # This was added primarily for the benefit for binutils-gdb who reuse
2563 # this configure script, but don't always have target tools available.
2564 if test ! -d ${srcdir}/gcc; then
2565 skipdirs="${skipdirs} ${target_configdirs}"
2568 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2569 # $build_configdirs and $target_configdirs.
2570 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2573 for dir in . $skipdirs $noconfigdirs ; do
2574 dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2575 if test $dir != . && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2576 configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2577 if test -r $srcdir/$dirname/configure ; then
2578 if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2581 notsupp="$notsupp $dir"
2585 if test $dir != . && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2586 build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2587 if test -r $srcdir/$dirname/configure ; then
2588 if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2591 notsupp="$notsupp $dir"
2595 if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2596 target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2597 if test -r $srcdir/$dirname/configure ; then
2598 if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2601 notsupp="$notsupp $dir"
2607 # Quietly strip out all directories which aren't configurable in this tree.
2608 # This relies on all configurable subdirectories being autoconfiscated, which
2610 build_configdirs_all="$build_configdirs"
2612 for i in ${build_configdirs_all} ; do
2613 j=`echo $i | sed -e s/build-//g`
2614 if test -f ${srcdir}/$j/configure ; then
2615 build_configdirs="${build_configdirs} $i"
2619 configdirs_all="$configdirs"
2621 for i in ${configdirs_all} ; do
2622 if test -f ${srcdir}/$i/configure ; then
2623 configdirs="${configdirs} $i"
2627 target_configdirs_all="$target_configdirs"
2629 for i in ${target_configdirs_all} ; do
2630 j=`echo $i | sed -e s/target-//g`
2631 if test -f ${srcdir}/$j/configure ; then
2632 target_configdirs="${target_configdirs} $i"
2636 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2637 # so we have to add it after the preceding checks.
2638 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2640 case " $configdirs " in
2642 # If we can build libiberty, we can also build libiberty-linker-plugin.
2643 configdirs="$configdirs libiberty-linker-plugin"
2644 extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2645 --with-libiberty=../libiberty-linker-plugin";;
2647 AC_MSG_ERROR([libiberty missing]);;
2651 # Sometimes we have special requirements for the host libiberty.
2652 extra_host_libiberty_configure_flags=
2653 case " $configdirs " in
2654 *" lto-plugin "* | *" libcc1 "* | *" gdbserver "*)
2655 # When these are to be built as shared libraries, the same applies to
2657 extra_host_libiberty_configure_flags=--enable-shared
2660 AC_SUBST(extra_host_libiberty_configure_flags)
2662 # Sometimes we have special requirements for the host zlib.
2663 extra_host_zlib_configure_flags=
2664 case " $configdirs " in
2666 # When bfd is to be built as a shared library, the same applies to
2668 if test "$enable_shared" = "yes"; then
2669 extra_host_zlib_configure_flags=--enable-host-shared
2673 AC_SUBST(extra_host_zlib_configure_flags)
2675 # Produce a warning message for the subdirs we can't configure.
2676 # This isn't especially interesting in the Cygnus tree, but in the individual
2677 # FSF releases, it's important to let people know when their machine isn't
2678 # supported by the one or two programs in a package.
2680 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2681 # If $appdirs is non-empty, at least one of those directories must still
2682 # be configured, or we error out. (E.g., if the gas release supports a
2683 # specified target in some subdirs but not the gas subdir, we shouldn't
2684 # pretend that all is well.)
2685 if test -n "$appdirs" ; then
2686 for dir in $appdirs ; do
2687 if test -r $dir/Makefile.in ; then
2688 if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2692 if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2698 if test -n "$appdirs" ; then
2699 echo "*** This configuration is not supported by this package." 1>&2
2703 # Okay, some application will build, or we don't care to check. Still
2704 # notify of subdirs not getting built.
2705 echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2706 echo " ${notsupp}" 1>&2
2707 echo " (Any other directories should still work fine.)" 1>&2
2715 # To find our prefix, in gcc_cv_tool_prefix.
2720 AC_ARG_WITH([build-sysroot],
2721 [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2722 [use sysroot as the system root during the build])],
2723 [if test x"$withval" != x ; then
2724 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2726 [SYSROOT_CFLAGS_FOR_TARGET=])
2727 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2729 AC_ARG_WITH([debug-prefix-map],
2730 [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2731 [map A to B, C to D ... in debug information])],
2732 [if test x"$withval" != x; then
2733 DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2734 for debug_map in $withval; do
2735 DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2738 [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2739 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2741 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2742 # might be empty or "-g". We don't require a C++ compiler, so CXXFLAGS
2743 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2744 # We want to ensure that TARGET libraries (which we know are built with
2745 # gcc) are built with "-O2 -g", so include those options when setting
2746 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2747 if test "x$CFLAGS_FOR_TARGET" = x; then
2748 if test "x${is_cross_compiler}" = xyes; then
2749 CFLAGS_FOR_TARGET="-g -O2"
2751 CFLAGS_FOR_TARGET=$CFLAGS
2754 *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2757 *" -g "* | *" -g3 "*) ;;
2758 *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2762 AC_SUBST(CFLAGS_FOR_TARGET)
2764 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2765 if test "x${is_cross_compiler}" = xyes; then
2766 CXXFLAGS_FOR_TARGET="-g -O2"
2768 CXXFLAGS_FOR_TARGET=$CXXFLAGS
2769 case " $CXXFLAGS " in
2771 *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2773 case " $CXXFLAGS " in
2774 *" -g "* | *" -g3 "*) ;;
2775 *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2779 AC_SUBST(CXXFLAGS_FOR_TARGET)
2781 AC_SUBST(LDFLAGS_FOR_TARGET)
2783 # Handle --with-headers=XXX. If the value is not "yes", the contents of
2784 # the named directory are copied to $(tooldir)/sys-include.
2785 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2786 if test x${is_cross_compiler} = xno ; then
2787 echo 1>&2 '***' --with-headers is only supported when cross compiling
2790 if test x"${with_headers}" != xyes ; then
2791 x=${gcc_cv_tool_prefix}
2792 copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2796 # Handle --with-libs=XXX. If the value is not "yes", the contents of
2797 # the name directories are copied to $(tooldir)/lib. Multiple directories
2799 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2800 if test x${is_cross_compiler} = xno ; then
2801 echo 1>&2 '***' --with-libs is only supported when cross compiling
2804 if test x"${with_libs}" != xyes ; then
2805 # Copy the libraries in reverse order, so that files in the first named
2806 # library override files in subsequent libraries.
2807 x=${gcc_cv_tool_prefix}
2808 for l in ${with_libs}; do
2809 copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2814 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2816 # This is done by determining whether or not the appropriate directory
2817 # is available, and by checking whether or not specific configurations
2818 # have requested that this magic not happen.
2820 # The command line options always override the explicit settings in
2821 # configure.ac, and the settings in configure.ac override this magic.
2823 # If the default for a toolchain is to use GNU as and ld, and you don't
2824 # want to do that, then you should use the --without-gnu-as and
2825 # --without-gnu-ld options for the configure script. Similarly, if
2826 # the default is to use the included zlib and you don't want to do that,
2827 # you should use the --with-system-zlib option for the configure script.
2829 if test x${use_gnu_as} = x &&
2830 echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2832 extra_host_args="$extra_host_args --with-gnu-as"
2835 if test x${use_gnu_ld} = x &&
2836 echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2838 extra_host_args="$extra_host_args --with-gnu-ld"
2841 if test x${use_included_zlib} = x &&
2842 echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2845 with_system_zlib=yes
2846 extra_host_args="$extra_host_args --with-system-zlib"
2849 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2850 # can detect this case.
2852 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2854 extra_host_args="$extra_host_args --with-newlib"
2857 # Handle ${copy_dirs}
2858 set fnord ${copy_dirs}
2860 while test $# != 0 ; do
2861 if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2864 echo Copying $1 to $2
2866 # Use the install script to create the directory and all required
2867 # parent directories.
2868 if test -d $2 ; then
2872 ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2875 # Copy the directory, assuming we have tar.
2876 # FIXME: Should we use B in the second tar? Not all systems support it.
2877 (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2879 # It is the responsibility of the user to correctly adjust all
2880 # symlinks. If somebody can figure out how to handle them correctly
2881 # here, feel free to add the code.
2888 # Determine a target-dependent exec_prefix that the installed
2889 # gcc will search in. Keep this list sorted by triplet, with
2890 # the *-*-osname triplets last.
2893 i[[34567]]86-pc-msdosdjgpp*)
2894 md_exec_prefix=/dev/env/DJDIR/bin
2899 md_exec_prefix=/usr/ccs/bin
2903 extra_arflags_for_target=
2904 extra_nmflags_for_target=
2905 extra_ranlibflags_for_target=
2906 target_makefile_frag=/dev/null
2909 target_makefile_frag="config/mt-spu"
2911 loongarch*-*linux* | loongarch*-*gnu*)
2912 target_makefile_frag="config/mt-loongarch-gnu"
2915 target_makefile_frag="config/mt-loongarch-elf"
2917 mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2918 target_makefile_frag="config/mt-sde"
2920 mipsisa*-*-elfoabi*)
2921 target_makefile_frag="config/mt-mips-elfoabi"
2923 mips*-*-*linux* | mips*-*-gnu*)
2924 target_makefile_frag="config/mt-mips-gnu"
2927 target_makefile_frag="config/mt-nios2-elf"
2930 target_makefile_frag="config/mt-android"
2932 *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2933 target_makefile_frag="config/mt-gnu"
2935 *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2936 # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2937 # commands to handle both 32-bit and 64-bit objects. These flags are
2938 # harmless if we're using GNU nm or ar.
2939 extra_arflags_for_target=" -X32_64"
2940 extra_nmflags_for_target=" -B -X32_64"
2944 alphaieee_frag=/dev/null
2947 # This just makes sure to use the -mieee option to build target libs.
2948 # This should probably be set individually by each library.
2949 alphaieee_frag="config/mt-alphaieee"
2953 # If --enable-target-optspace always use -Os instead of -O2 to build
2954 # the target libraries, similarly if it is not specified, use -Os
2955 # on selected platforms.
2956 ospace_frag=/dev/null
2957 case "${enable_target_optspace}:${target}" in
2959 ospace_frag="config/mt-ospace"
2962 ospace_frag="config/mt-d30v"
2964 :m32r-* | :d10v-* | :fr30-* | :i?86*-*-elfiamcu)
2965 ospace_frag="config/mt-ospace"
2970 echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2974 # Some systems (e.g., one of the i386-aix systems the gas testers are
2975 # using) don't handle "\$" correctly, so don't use it here.
2976 tooldir='${exec_prefix}'/${target_noncanonical}
2977 build_tooldir=${tooldir}
2979 # Create a .gdbinit file which runs the one in srcdir
2980 # and tells GDB to look there for source files.
2982 if test -r ${srcdir}/.gdbinit ; then
2985 *) cat > ./.gdbinit <<EOF
2989 source ${srcdir}/.gdbinit
2995 # Make sure that the compiler is able to generate an executable. If it
2996 # can't, we are probably in trouble. We don't care whether we can run the
2997 # executable--we might be using a cross compiler--we only care whether it
2998 # can be created. At this point the main configure script has set CC.
3000 echo "int main () { return 0; }" > conftest.c
3001 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3002 if test $? = 0 ; then
3003 if test -s conftest || test -s conftest.exe ; then
3009 echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
3010 echo 1>&2 "*** You must set the environment variable CC to a working compiler."
3017 # Decide which environment variable is used to find dynamic libraries.
3019 *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
3020 *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
3021 *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
3022 *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
3025 # On systems where the dynamic library environment variable is PATH,
3026 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
3027 # built executables to PATH.
3028 if test "$RPATH_ENVVAR" = PATH; then
3029 GCC_SHLIB_SUBDIR=/shlib
3034 # Adjust the toplevel makefile according to whether bootstrap was selected.
3035 case $enable_bootstrap in
3037 bootstrap_suffix=bootstrap
3038 BUILD_CONFIG=bootstrap-debug
3041 bootstrap_suffix=no-bootstrap
3046 AC_MSG_CHECKING(for default BUILD_CONFIG)
3048 AC_ARG_WITH([build-config],
3049 [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
3050 [use config/NAME.mk build configuration])],
3051 [case $with_build_config in
3052 yes) with_build_config= ;;
3053 no) with_build_config= BUILD_CONFIG= ;;
3056 if test "x${with_build_config}" != x; then
3057 BUILD_CONFIG=$with_build_config
3059 case $BUILD_CONFIG in
3061 if echo "int f (void) { return 0; }" > conftest.c &&
3062 ${CC} -c conftest.c &&
3063 mv conftest.o conftest.o.g0 &&
3064 ${CC} -c -g conftest.c &&
3065 mv conftest.o conftest.o.g &&
3066 ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
3071 rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
3075 AC_MSG_RESULT($BUILD_CONFIG)
3076 AC_SUBST(BUILD_CONFIG)
3078 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
3079 AC_MSG_CHECKING([for --enable-vtable-verify])
3080 AC_ARG_ENABLE(vtable-verify,
3081 [AS_HELP_STRING([--enable-vtable-verify],
3082 [Enable vtable verification feature])],
3083 [case "$enableval" in
3084 yes) enable_vtable_verify=yes ;;
3085 no) enable_vtable_verify=no ;;
3086 *) enable_vtable_verify=no;;
3088 [enable_vtable_verify=no])
3089 AC_MSG_RESULT($enable_vtable_verify)
3091 # Record target_configdirs and the configure arguments for target and
3092 # build configuration in Makefile.
3093 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
3094 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
3095 bootstrap_fixincludes=no
3097 # If we are building libgomp, bootstrap it.
3098 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
3099 bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
3102 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
3103 # or bootstrap-ubsan, bootstrap it.
3104 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
3105 case "$BUILD_CONFIG" in
3106 *bootstrap-hwasan* | *bootstrap-asan* | *bootstrap-ubsan* )
3107 bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
3108 bootstrap_fixincludes=yes
3113 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
3114 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
3115 test "$enable_vtable_verify" != no; then
3116 bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
3119 # If we are building libatomic and the list of enabled languages includes the
3120 # D frontend, bootstrap it.
3121 if echo " ${target_configdirs} " | grep " libatomic " > /dev/null 2>&1; then
3122 case ,${enable_languages}, in
3124 bootstrap_target_libs=${bootstrap_target_libs}target-libatomic,
3129 # Determine whether gdb needs tk/tcl or not.
3130 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
3131 # and in that case we want gdb to be built without tk. Ugh!
3132 # In fact I believe gdb is the *only* package directly dependent on tk,
3133 # so we should be able to put the 'maybe's in unconditionally and
3134 # leave out the maybe dependencies when enable_gdbtk is false. I'm not
3135 # 100% sure that that's safe though.
3137 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
3138 case "$enable_gdbtk" in
3142 GDB_TK="${gdb_tk}" ;;
3144 # Only add the dependency on gdbtk when GDBtk is part of the gdb
3145 # distro. Eventually someone will fix this and move Insight, nee
3146 # gdbtk to a separate directory.
3147 if test -d ${srcdir}/gdb/gdbtk ; then
3154 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
3155 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
3157 # gdb and gdbserver depend on gnulib and gdbsupport, but as nothing
3158 # else does, only include them if one of these is built. The Makefile
3159 # provides the ordering, so it's enough here to add to the list.
3160 case " ${configdirs} " in
3162 configdirs="${configdirs} gnulib gdbsupport"
3165 configdirs="${configdirs} gnulib gdbsupport"
3168 configdirs="${configdirs} gnulib"
3172 # Strip out unwanted targets.
3174 # While at that, we remove Makefiles if we were started for recursive
3175 # configuration, so that the top-level Makefile reconfigures them,
3176 # like we used to do when configure itself was recursive.
3178 # Loop over modules. We used to use the "$extrasub" feature from Autoconf
3179 # but now we're fixing up the Makefile ourselves with the additional
3180 # commands passed to AC_CONFIG_FILES. Use separate variables
3181 # extrasub-{build,host,target} not because there is any reason to split
3182 # the substitutions up that way, but only to remain below the limit of
3183 # 99 commands in a script, for HP-UX sed.
3185 # Do not nest @if/@endif or @unless/@endunless pairs, because
3186 # configure will not warn you at all.
3188 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
3189 yes:yes:*\ gold\ *:*,c++,*) ;;
3190 yes:yes:*\ gold\ *:*)
3191 AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
3196 for module in ${build_configdirs} ; do
3197 if test -z "${no_recursion}" \
3198 && test -f ${build_subdir}/${module}/Makefile; then
3199 echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
3200 rm -f ${build_subdir}/${module}/Makefile
3202 extrasub_build="$extrasub_build
3203 /^@if build-$module\$/d
3204 /^@endif build-$module\$/d
3205 /^@unless build-$module\$/,/^@endunless build-$module\$/d
3206 /^@if build-$module-$bootstrap_suffix\$/d
3207 /^@endif build-$module-$bootstrap_suffix\$/d
3208 /^@unless build-$module-$bootstrap_suffix\$/,/^@endunless build-$module-$bootstrap_suffix\$/d"
3211 for module in ${configdirs} ; do
3212 if test -z "${no_recursion}"; then
3213 for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
3214 if test -f ${file}; then
3215 echo 1>&2 "*** removing ${file} to force reconfigure"
3220 case ${module},${bootstrap_fixincludes} in
3221 fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
3222 *) host_bootstrap_suffix=$bootstrap_suffix ;;
3224 extrasub_host="$extrasub_host
3226 /^@endif $module\$/d
3227 /^@unless $module\$/,/^@endunless $module\$/d
3228 /^@if $module-$host_bootstrap_suffix\$/d
3229 /^@endif $module-$host_bootstrap_suffix\$/d
3230 /^@unless $module-$host_bootstrap_suffix\$/,/^@endunless $module-$host_bootstrap_suffix\$/d"
3233 for module in ${target_configdirs} ; do
3234 if test -z "${no_recursion}" \
3235 && test -f ${target_subdir}/${module}/Makefile; then
3236 echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
3237 rm -f ${target_subdir}/${module}/Makefile
3240 # We only bootstrap target libraries listed in bootstrap_target_libs.
3241 case $bootstrap_target_libs in
3242 *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
3243 *) target_bootstrap_suffix=no-bootstrap ;;
3246 extrasub_target="$extrasub_target
3247 /^@if target-$module\$/d
3248 /^@endif target-$module\$/d
3249 /^@unless target-$module\$/,/^@endunless target-$module\$/d
3250 /^@if target-$module-$target_bootstrap_suffix\$/d
3251 /^@endif target-$module-$target_bootstrap_suffix\$/d
3252 /^@unless target-$module-$target_bootstrap_suffix\$/,/^@endunless target-$module-$target_bootstrap_suffix\$/d"
3255 # Do the final fixup along with target modules.
3256 extrasub_target="$extrasub_target
3261 if test "$enable_pgo_build" != "no"; then
3262 extrasub_build="$extrasub_build
3264 /^@endif pgo-build\$/d"
3267 # Create the serialization dependencies. This uses a temporary file.
3269 AC_ARG_ENABLE([serial-configure],
3270 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
3271 [force sequential configuration of
3272 sub-packages for the host, target or build
3273 machine, or all sub-packages])])
3275 case ${enable_serial_configure} in
3277 enable_serial_build_configure=yes
3278 enable_serial_host_configure=yes
3279 enable_serial_target_configure=yes
3283 # These force 'configure's to be done one at a time, to avoid problems
3284 # with contention over a shared config.cache.
3286 if test "x${enable_serial_build_configure}" = xyes || test "x${enable_serial_host_configure}" = xyes || test "x${enable_serial_target_configure}" = xyes; then
3287 echo '# serdep.tmp' > serdep.tmp
3290 test "x${enable_serial_build_configure}" = xyes &&
3291 for item in ${build_configdirs} ; do
3294 *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
3299 test "x${enable_serial_host_configure}" = xyes &&
3300 for item in ${configdirs} ; do
3303 *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
3308 test "x${enable_serial_target_configure}" = xyes &&
3309 for item in ${target_configdirs} ; do
3312 *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
3316 serialization_dependencies=serdep.tmp
3317 AC_SUBST_FILE(serialization_dependencies)
3319 # Base args. Strip norecursion, cache-file, srcdir, host, build,
3320 # target, nonopt, and variable assignments. These are the ones we
3321 # might not want to pass down to subconfigures. The exception being
3322 # --cache-file=/dev/null, which is used to turn off the use of cache
3323 # files altogether, and which should be passed on to subconfigures.
3324 # Also strip program-prefix, program-suffix, and program-transform-name,
3325 # so that we can pass down a consistent program-transform-name.
3331 eval "set -- $ac_configure_args"
3334 if test X"$skip_next" = X"yes"; then
3338 if test X"$keep_next" = X"yes"; then
3341 ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
3343 hbaseargs="$hbaseargs '$ac_arg'"
3344 bbaseargs="$bbaseargs '$ac_arg'"
3345 tbaseargs="$tbaseargs '$ac_arg'"
3350 # Handle separated arguments. Based on the logic generated by
3353 *=* | --config-cache | -C | -disable-* | --disable-* \
3354 | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
3355 | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
3356 | -with-* | --with-* | -without-* | --without-* | --x)
3371 --with-* | --without-*)
3372 libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
3376 lib=`echo "$libopt" | sed 's,[-_]include$,,'`
3379 lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
3382 lib=`echo "$libopt" | sed 's,[-_]prefix$,,'`
3385 lib=`echo "$libopt" | sed 's,[-_]type$,,'`
3394 mpc | mpfr | gmp | isl)
3395 # If we're processing --with-$lib, --with-$lib-include or
3396 # --with-$lib-lib, for one of the libs above, and target is
3397 # different from host, don't pass the current argument to any
3398 # target library's configure.
3399 if test x$is_cross_compiler = xyes; then
3404 # We don't want libintl (and co.) in anything but the host arguments.
3413 --cache-file=/dev/null | \
3414 -cache-file=/dev/null )
3415 # Handled here to avoid the test to skip args below.
3416 hbaseargs="$hbaseargs '$ac_arg'"
3417 bbaseargs="$bbaseargs '$ac_arg'"
3418 tbaseargs="$tbaseargs '$ac_arg'"
3419 # Assert: $separate_arg should always be no.
3420 keep_next=$separate_arg
3436 -program-prefix* | \
3437 -program-suffix* | \
3438 -program-transform-name* )
3439 skip_next=$separate_arg
3443 # An option. Add it.
3446 ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
3448 hbaseargs="$hbaseargs '$ac_arg'"
3449 if test X"$skip_barg" = Xno; then
3450 bbaseargs="$bbaseargs '$ac_arg'"
3452 if test X"$skip_targ" = Xno; then
3453 tbaseargs="$tbaseargs '$ac_arg'"
3455 keep_next=$separate_arg
3458 # Either a variable assignment, or a nonopt (triplet). Don't
3459 # pass it down; let the Makefile handle this.
3464 # Remove the initial space we just introduced and, as these will be
3465 # expanded by make, quote '$'.
3466 hbaseargs=`echo "x$hbaseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
3467 bbaseargs=`echo "x$bbaseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
3469 # Add in --program-transform-name, after --program-prefix and
3470 # --program-suffix have been applied to it. Autoconf has already
3471 # doubled dollar signs and backslashes in program_transform_name; we want
3472 # the backslashes un-doubled, and then the entire thing wrapped in single
3473 # quotes, because this will be expanded first by make and then by the shell.
3474 # Also, because we want to override the logic in subdir configure scripts to
3475 # choose program_transform_name, replace any s,x,x, with s,y,y,.
3476 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
3477 ${program_transform_name}
3479 gcc_transform_name=`cat conftestsed.out`
3480 rm -f conftestsed.out
3481 hbaseargs="$hbaseargs --program-transform-name='${gcc_transform_name}'"
3482 bbaseargs="$bbaseargs --program-transform-name='${gcc_transform_name}'"
3483 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
3484 if test "$silent" = yes; then
3485 bbaseargs="$bbaseargs --silent"
3486 hbaseargs="$hbaseargs --silent"
3487 tbaseargs="$tbaseargs --silent"
3490 bbaseargs="$bbaseargs --disable-option-checking"
3491 hbaseargs="$hbaseargs --disable-option-checking"
3492 tbaseargs="$tbaseargs --disable-option-checking"
3494 if test "$enable_year2038" = no; then
3495 baseargs="$baseargs --disable-year2038"
3496 tbaseargs="$tbaseargs --disable-year2038"
3499 # Record and document user additions to sub configure arguments.
3500 AC_ARG_VAR([build_configargs],
3501 [additional configure arguments for build directories])
3502 AC_ARG_VAR([host_configargs],
3503 [additional configure arguments for host directories])
3504 AC_ARG_VAR([target_configargs],
3505 [additional configure arguments for target directories])
3507 # For the build-side libraries, we just need to pretend we're native,
3508 # and not use the same cache file. Multilibs are neither needed nor
3509 # desired. We can't even use the same cache file for all build-side
3510 # libraries, as they're compiled differently; some with C, some with
3511 # C++ or with different feature-enabling options.
3512 build_configargs="$build_configargs --cache-file=./config.cache ${bbaseargs}"
3514 # For host modules, accept cache file option, or specification as blank.
3515 case "${cache_file}" in
3517 cache_file_option="" ;;
3518 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
3519 cache_file_option="--cache-file=${cache_file}" ;;
3521 cache_file_option="--cache-file=../${cache_file}" ;;
3524 # Host dirs don't like to share a cache file either, horribly enough.
3525 # This seems to be due to autoconf 2.5x stupidity.
3526 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${hbaseargs}"
3528 target_configargs="$target_configargs ${tbaseargs}"
3530 # Passing a --with-cross-host argument lets the target libraries know
3531 # whether they are being built with a cross-compiler or being built
3532 # native. However, it would be better to use other mechanisms to make the
3533 # sorts of decisions they want to make on this basis. Please consider
3534 # this option to be deprecated. FIXME.
3535 if test x${is_cross_compiler} = xyes ; then
3536 target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3539 # Special user-friendly check for native x86_64-linux build, if
3540 # multilib is not explicitly enabled.
3541 case "$target:$have_compiler:$host:$target:$enable_multilib" in
3542 x86_64-*linux*:yes:$build:$build:)
3543 # Make sure we have a development environment that handles 32-bit
3545 echo "int main () { return 0; }" > conftest.c
3546 ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3547 if test $? = 0 ; then
3548 if test -s conftest || test -s conftest.exe ; then
3553 if test x${dev64} != xyes ; then
3554 AC_MSG_ERROR([I suspect your system does not have 32-bit development libraries (libc and headers). If you have them, rerun configure with --enable-multilib. If you do not have them, and want to build a 64-bit-only compiler, rerun configure with --disable-multilib.])
3559 # Default to --enable-multilib.
3560 if test x${enable_multilib} = x ; then
3561 target_configargs="--enable-multilib ${target_configargs}"
3564 # Pass --with-newlib if appropriate. Note that target_configdirs has
3565 # changed from the earlier setting of with_newlib.
3566 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3567 target_configargs="--with-newlib ${target_configargs}"
3570 # Different target subdirs use different values of certain variables
3571 # (notably CXX). Worse, multilibs use *lots* of different values.
3572 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3573 # it doesn't automatically accept command-line overrides of them.
3574 # This means it's not safe for target subdirs to share a cache file,
3575 # which is disgusting, but there you have it. Hopefully this can be
3576 # fixed in future. It's still worthwhile to use a cache file for each
3577 # directory. I think.
3579 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3580 # We need to pass --target, as newer autoconf's requires consistency
3581 # for target_alias and gcc doesn't manage it consistently.
3582 target_configargs="--cache-file=./config.cache ${target_configargs}"
3585 case " $target_configdirs " in
3587 case " $target_configargs " in
3588 *" --with-newlib "*)
3591 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3595 # If we're not building GCC, don't discard standard headers.
3596 if test -d ${srcdir}/gcc; then
3597 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3599 if test "${build}" != "${host}"; then
3600 # On Canadian crosses, CC_FOR_TARGET will have already been set
3601 # by `configure', so we won't have an opportunity to add -Bgcc/
3602 # to it. This is right: we don't want to search that directory
3603 # for binaries, but we want the header files in there, so add
3605 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3607 # Someone might think of using the pre-installed headers on
3608 # Canadian crosses, in case the installed compiler is not fully
3609 # compatible with the compiler being built. In this case, it
3610 # would be better to flag an error than risking having
3611 # incompatible object files being constructed. We can't
3612 # guarantee that an error will be flagged, but let's hope the
3613 # compiler will do it, when presented with incompatible header
3618 case "${target}-${is_cross_compiler}" in
3619 i[[3456789]]86-*-linux*-no)
3620 # Here host == target, so we don't need to build gcc,
3621 # so we don't want to discard standard headers.
3622 FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3625 # If we're building newlib, use its generic headers last, but search
3626 # for any libc-related directories first (so make it the last -B
3628 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3630 # If we're building libgloss, find the startup file, simulator library
3631 # and linker script.
3632 case " $target_configdirs " in
3634 # Look for startup file, simulator library and maybe linker script.
3635 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3636 # Look for libnosys.a in case the target needs it.
3637 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3638 # Most targets have the linker script in the source directory.
3639 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3650 x86_64-*mingw* | *-w64-mingw*)
3651 # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3652 # however, use a symlink named 'mingw' in ${prefix} .
3653 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3656 # MinGW can't be handled as Cygwin above since it does not use newlib.
3657 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/mingw -L$$r/$(TARGET_SUBDIR)/winsup/w32api/lib -isystem $$s/winsup/mingw/include -isystem $$s/winsup/w32api/include'
3661 # Allow the user to override the flags for
3662 # our build compiler if desired.
3663 if test x"${build}" = x"${host}" ; then
3664 CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3665 CPPFLAGS_FOR_BUILD=${CPPFLAGS_FOR_BUILD-${CPPFLAGS}}
3666 CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3667 LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3670 # On Canadian crosses, we'll be searching the right directories for
3671 # the previously-installed cross compiler, so don't bother to add
3672 # flags for directories within the install tree of the compiler
3673 # being built; programs in there won't even run.
3674 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3675 # Search for pre-installed headers if nothing else fits.
3676 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3679 if test "x${use_gnu_ld}" = x &&
3680 echo " ${configdirs} " | grep " ld " > /dev/null ; then
3681 # Arrange for us to find uninstalled linker scripts.
3682 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3685 # Search for other target-specific linker scripts and such.
3688 FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3690 # The VxWorks support for shared libraries is getting in
3691 # incrementally. Make sure it doesn't get activated implicitly:
3693 if test "${enable_shared-unset}" = unset ; then
3695 # So the build of libraries knows ...
3696 target_configargs="${target_configargs} --disable-shared"
3698 host_configargs="${host_configargs} --disable-shared"
3703 # Makefile fragments.
3704 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3706 eval fragval=\$$frag
3707 if test $fragval != /dev/null; then
3708 eval $frag=${srcdir}/$fragval
3711 AC_SUBST_FILE(host_makefile_frag)
3712 AC_SUBST_FILE(target_makefile_frag)
3713 AC_SUBST_FILE(alphaieee_frag)
3714 AC_SUBST_FILE(ospace_frag)
3716 # Miscellanea: directories, flags, etc.
3717 AC_SUBST(RPATH_ENVVAR)
3718 AC_SUBST(GCC_SHLIB_SUBDIR)
3720 AC_SUBST(build_tooldir)
3721 AC_SUBST(CONFIGURE_GDB_TK)
3723 AC_SUBST(INSTALL_GDB_TK)
3725 # Build module lists & subconfigure args.
3726 AC_SUBST(build_configargs)
3727 AC_SUBST(build_configdirs)
3729 # Host module lists & subconfigure args.
3730 AC_SUBST(host_configargs)
3731 AC_SUBST(configdirs)
3732 AC_SUBST(target_configdirs)
3734 # Target module lists & subconfigure args.
3735 AC_SUBST(target_configargs)
3739 AC_SUBST(AR_FOR_BUILD)
3740 AC_SUBST(AS_FOR_BUILD)
3741 AC_SUBST(CC_FOR_BUILD)
3742 AC_SUBST(CFLAGS_FOR_BUILD)
3743 AC_SUBST(CPP_FOR_BUILD)
3744 AC_SUBST(CPPFLAGS_FOR_BUILD)
3745 AC_SUBST(CXXFLAGS_FOR_BUILD)
3746 AC_SUBST(CXX_FOR_BUILD)
3747 AC_SUBST(DLLTOOL_FOR_BUILD)
3748 AC_SUBST(DSYMUTIL_FOR_BUILD)
3749 AC_SUBST(GFORTRAN_FOR_BUILD)
3750 AC_SUBST(GOC_FOR_BUILD)
3751 AC_SUBST(GDC_FOR_BUILD)
3752 AC_SUBST(LDFLAGS_FOR_BUILD)
3753 AC_SUBST(LD_FOR_BUILD)
3754 AC_SUBST(NM_FOR_BUILD)
3755 AC_SUBST(RANLIB_FOR_BUILD)
3756 AC_SUBST(WINDMC_FOR_BUILD)
3757 AC_SUBST(WINDRES_FOR_BUILD)
3759 # Generate default definitions for YACC, M4, LEX and other programs that run
3760 # on the build machine. These are used if the Makefile can't locate these
3761 # programs in objdir.
3762 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3764 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3765 case " $build_configdirs " in
3766 *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3769 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3770 case " $build_configdirs " in
3771 *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3774 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3775 case " $build_configdirs " in
3776 *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3779 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3780 case " $build_configdirs " in
3781 *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3782 *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3785 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3786 case " $build_configdirs " in
3787 *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3790 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3791 case " $build_configdirs " in
3792 *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3795 # For an installed makeinfo, we require it to be from texinfo 4.7 or
3796 # higher, else we use the "missing" dummy.
3797 if ${MAKEINFO} --version \
3798 | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3801 MAKEINFO="$MISSING makeinfo"
3807 # FIXME: expect and dejagnu may become build tools?
3809 AC_CHECK_PROGS(EXPECT, expect, expect)
3810 case " $configdirs " in
3812 test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3816 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3817 case " $configdirs " in
3819 test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3825 NCN_STRICT_CHECK_TOOLS(AR, ar)
3826 NCN_STRICT_CHECK_TOOLS(AS, as)
3827 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3828 NCN_STRICT_CHECK_TOOLS(DSYMUTIL, dsymutil)
3829 NCN_STRICT_CHECK_TOOLS(LD, ld)
3830 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3831 NCN_STRICT_CHECK_TOOLS(NM, nm)
3832 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3833 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3834 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3835 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3836 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3837 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3838 NCN_STRICT_CHECK_TOOLS(OTOOL, otool)
3839 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3846 GDCFLAGS=${GDCFLAGS-${CFLAGS}}
3847 AC_SUBST(PKG_CONFIG_PATH)
3849 GCC_PLUGIN_OPTION(PLUGIN_OPTION)
3851 RANLIB_PLUGIN_OPTION=
3852 if test -n "$PLUGIN_OPTION"; then
3853 if $AR --help 2>&1 | grep -q "\--plugin"; then
3854 AR_PLUGIN_OPTION="$PLUGIN_OPTION"
3856 if $RANLIB --help 2>&1 | grep -q "\--plugin"; then
3857 RANLIB_PLUGIN_OPTION="$PLUGIN_OPTION"
3860 AC_SUBST(AR_PLUGIN_OPTION)
3861 AC_SUBST(RANLIB_PLUGIN_OPTION)
3864 AC_ARG_WITH([build-time-tools],
3865 [AS_HELP_STRING([--with-build-time-tools=PATH],
3866 [use given path to find target tools during the build])],
3867 [case x"$withval" in
3870 with_build_time_tools=
3871 AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3874 [with_build_time_tools=])
3876 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3877 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3878 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3879 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3880 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3881 NCN_STRICT_CHECK_TARGET_TOOLS(GDC_FOR_TARGET, gdc)
3882 NCN_STRICT_CHECK_TARGET_TOOLS(GM2_FOR_TARGET, gm2)
3884 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3885 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3886 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3887 ACX_CHECK_INSTALLED_TARGET_TOOL(DSYMUTIL_FOR_TARGET, dsymutil)
3888 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3889 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3890 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3891 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3892 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3893 ACX_CHECK_INSTALLED_TARGET_TOOL(OTOOL_FOR_TARGET, otool)
3894 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3895 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3896 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3897 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3898 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3900 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3902 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3903 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3904 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3905 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3906 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3907 [gcc/xg++ -B$$r/$(HOST_SUBDIR)/gcc/ -nostdinc++ `if test -f $$r/$(TARGET_SUBDIR)/libstdc++-v3/scripts/testsuite_flags; then $(SHELL) $$r/$(TARGET_SUBDIR)/libstdc++-v3/scripts/testsuite_flags --build-includes; else echo -funconfigured-libstdc++-v3 ; fi` -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3909 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3910 [gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3912 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3913 GCC_TARGET_TOOL(dsymutil, DSYMUTIL_FOR_TARGET, DSYMUTIL)
3914 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3915 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3916 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3917 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3918 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3919 GCC_TARGET_TOOL(gdc, GDC_FOR_TARGET, GDC,
3920 [gcc/gdc -B$$r/$(HOST_SUBDIR)/gcc/], d)
3921 GCC_TARGET_TOOL(gm2, GM2_FOR_TARGET, GM2,
3922 [gcc/gm2 -B$$r/$(HOST_SUBDIR)/gcc/], m2)
3923 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3924 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3925 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3926 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3927 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3928 GCC_TARGET_TOOL(otool, OTOOL_FOR_TARGET, OTOOL)
3929 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3930 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3931 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3932 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3933 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3935 AC_SUBST(FLAGS_FOR_TARGET)
3936 AC_SUBST(RAW_CXX_FOR_TARGET)
3938 # Certain tools may need extra flags.
3939 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3940 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3941 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3943 # When building target libraries, except in a Canadian cross, we use
3944 # the same toolchain as the compiler we just built.
3945 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3946 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3947 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3948 if test $host = $build; then
3949 case " $configdirs " in
3951 COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3952 COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3953 COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3958 AC_SUBST(COMPILER_AS_FOR_TARGET)
3959 AC_SUBST(COMPILER_LD_FOR_TARGET)
3960 AC_SUBST(COMPILER_NM_FOR_TARGET)
3962 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3963 AC_ARG_ENABLE(maintainer-mode,
3964 [AS_HELP_STRING([--enable-maintainer-mode],
3965 [enable make rules and dependencies not useful
3966 (and sometimes confusing) to the casual installer])],
3967 USE_MAINTAINER_MODE=$enableval,
3968 USE_MAINTAINER_MODE=no)
3969 AC_MSG_RESULT($USE_MAINTAINER_MODE)
3970 AC_SUBST(MAINTAINER_MODE_TRUE)
3971 AC_SUBST(MAINTAINER_MODE_FALSE)
3972 if test "$USE_MAINTAINER_MODE" = yes; then
3973 MAINTAINER_MODE_TRUE=
3974 MAINTAINER_MODE_FALSE='#'
3976 MAINTAINER_MODE_TRUE='#'
3977 MAINTAINER_MODE_FALSE=
3979 MAINT=$MAINTAINER_MODE_TRUE
3982 # ---------------------
3983 # GCC bootstrap support
3984 # ---------------------
3986 # Stage specific cflags for build.
3991 yes) stage1_cflags="-g -Wa,-J" ;;
3992 *) stage1_cflags="-g -J" ;;
3996 AC_SUBST(stage1_cflags)
3998 # Enable --enable-checking in stage1 of the compiler.
3999 AC_ARG_ENABLE(stage1-checking,
4000 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
4001 [choose additional checking for stage1 of the compiler])],
4002 [stage1_checking=--enable-checking=${enable_stage1_checking}],
4003 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
4004 # For --disable-checking or implicit --enable-checking=release, avoid
4005 # setting --enable-checking=gc in the default stage1 checking for LTO
4006 # bootstraps. See PR62077.
4007 case $BUILD_CONFIG in
4009 stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types;;
4011 stage1_checking=--enable-checking=yes,types;;
4013 if test "x$enable_checking" = x && \
4014 test -d ${srcdir}/gcc && \
4015 test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
4016 stage1_checking=--enable-checking=yes,types,extra
4019 stage1_checking=--enable-checking=$enable_checking,types
4021 AC_SUBST(stage1_checking)
4023 # Enable -Werror in bootstrap stage2 and later.
4024 AC_ARG_ENABLE(werror,
4025 [AS_HELP_STRING([--enable-werror],
4026 [enable -Werror in bootstrap stage2 and later])],
4028 case ${enable_werror} in
4029 yes) stage2_werror_flag="--enable-werror-always" ;;
4030 *) stage2_werror_flag="" ;;
4034 if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
4035 case $BUILD_CONFIG in
4037 stage2_werror_flag="--enable-werror-always" ;;
4039 stage2_werror_flag="--enable-werror-always" ;;
4044 AC_SUBST(stage2_werror_flag)
4046 # Specify what files to not compare during bootstrap.
4048 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
4049 compare_exclusions="$compare_exclusions | gcc/m2/gm2-compiler-boot/M2Version*"
4050 compare_exclusions="$compare_exclusions | gcc/m2/gm2-compiler-boot/SYSTEM*"
4051 compare_exclusions="$compare_exclusions | gcc/m2/gm2version*"
4053 hppa*64*-*-hpux*) ;;
4054 powerpc*-ibm-aix*) compare_exclusions="$compare_exclusions | *libgomp*\$(objext)" ;;
4056 AC_SUBST(compare_exclusions)
4058 AC_CONFIG_FILES([Makefile],
4059 [sed "$extrasub_build" Makefile |
4060 sed "$extrasub_host" |
4061 sed "$extrasub_target" > mf$$
4062 mv -f mf$$ Makefile],
4063 [extrasub_build="$extrasub_build"
4064 extrasub_host="$extrasub_host"
4065 extrasub_target="$extrasub_target"])