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])
36 AC_CONFIG_SRCDIR([move-if-change])
37 AC_DISABLE_OPTION_CHECKING
40 # if PWD already has a value, it is probably wrong.
41 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
43 # Export original configure arguments for use by sub-configures.
44 # Quote arguments with shell meta charatcers.
45 TOPLEVEL_CONFIGURE_ARGUMENTS=
46 set -- "$progname" "$@"
50 *" "*|*" "*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
51 ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
52 # if the argument is of the form -foo=baz, quote the baz part only
53 ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
56 # Add the quoted argument to the list.
57 TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
59 if test "$silent" = yes; then
60 TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
62 # Remove the initial space we just introduced and, as these will be
63 # expanded by make, quote '$'.
64 TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
65 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
67 # Find the build, host, and target systems.
68 ACX_NONCANONICAL_BUILD
70 ACX_NONCANONICAL_TARGET
72 dnl Autoconf 2.5x and later will set a default program prefix if
73 dnl --target was used, even if it was the same as --host. Disable
74 dnl that behavior. This must be done before AC_CANONICAL_TARGET
76 test "$host_noncanonical" = "$target_noncanonical" &&
77 test "$program_prefix$program_suffix$program_transform_name" = \
79 program_transform_name=s,y,y,
84 m4_pattern_allow([^AS_FOR_TARGET$])dnl
85 m4_pattern_allow([^AS_FOR_BUILD$])dnl
87 # Get 'install' or 'install-sh' and its variants.
94 srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
96 # We pass INSTALL explicitly to sub-makes. Make sure that it is not
98 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
99 INSTALL="${srcpwd}/install-sh -c"
102 # Set srcdir to "." if that's what it is.
103 # This is important for multilib support.
105 if test "${pwd}" = "${srcpwd}" ; then
113 ### To add a new directory to the tree, first choose whether it is a target
114 ### or a host dependent tool. Then put it into the appropriate list
115 ### (library or tools, host or target), doing a dependency sort.
117 # Subdirs will be configured in the order listed in build_configdirs,
118 # configdirs, or target_configdirs; see the serialization section below.
120 # Dependency sorting is only needed when *configuration* must be done in
121 # a particular order. In all cases a dependency should be specified in
122 # the Makefile, whether or not it's implicitly specified here.
124 # Double entries in build_configdirs, configdirs, or target_configdirs may
125 # cause circular dependencies and break everything horribly.
127 # these library is used by various programs built for the build
130 build_libs="build-libiberty build-libcpp"
132 # these tools are built for the build environment
133 build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
135 # these libraries are used by various programs built for the host environment
137 host_libs="gettext libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libcody libdecnumber gmp mpfr mpc isl libiconv libctf libsframe libgrust "
139 # these tools are built for the host environment
140 # Note, the powerpc-eabi build depends on sim occurring before gdb in order to
141 # know that we are building the simulator.
142 # binutils, gas and ld appear in that order because it makes sense to run
143 # "make check" in that particular order.
144 # If --enable-gold is used, "gold" may replace "ld".
145 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"
147 # these libraries are built for the target environment, and are built after
148 # the host libraries and the host tools (which may be a cross compiler)
149 # Note that libiberty is not a target library.
150 target_libraries="target-libgcc \
151 target-libbacktrace \
157 target-libstdc++-v3 \
158 target-libsanitizer \
172 # these tools are built using the target libraries, and are intended to
173 # run only in the target environment
175 # note: any program that *uses* libraries that are in the "target_libraries"
176 # list belongs in this list.
178 target_tools="target-rda"
180 ################################################################################
182 ## All tools belong in one of the four categories, and are assigned above
183 ## We assign ${configdirs} this way to remove all embedded newlines. This
184 ## is important because configure will choke if they ever get through.
185 ## ${configdirs} is directories we build using the host tools.
186 ## ${target_configdirs} is directories we build using the target tools.
187 configdirs=`echo ${host_libs} ${host_tools}`
188 target_configdirs=`echo ${target_libraries} ${target_tools}`
189 build_configdirs=`echo ${build_libs} ${build_tools}`
191 m4_divert_text([PARSE_ARGS],
194 m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
195 AC_MSG_ERROR([path to source, $srcdir, contains spaces])
196 m4_popdef([AS_MESSAGE_LOG_FD])dnl
199 ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
202 ################################################################################
204 srcname="gnu development package"
206 # This gets set non-empty for some net releases of packages.
209 # Define is_cross_compiler to save on calls to 'test'.
211 if test x"${host}" = x"${target}" ; then
214 is_cross_compiler=yes
217 # Find the build and target subdir names.
219 # Be sure to cover against remnants of an in-tree build.
220 if test $srcdir != . && test -d $srcdir/host-${host_noncanonical}; then
221 AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
222 Use a pristine source tree when building in a separate tree])
225 # Skipdirs are removed silently.
227 # Noconfigdirs are removed loudly.
231 # Make sure we don't let GNU ld be added if we didn't want it.
232 if test x$with_gnu_ld = xno ; then
234 noconfigdirs="$noconfigdirs ld gold"
238 # Make sure we don't let GNU as be added if we didn't want it.
239 if test x$with_gnu_as = xno ; then
241 noconfigdirs="$noconfigdirs gas"
245 AC_ARG_WITH(system-zlib,
246 [AS_HELP_STRING([--with-system-zlib], [use installed libz])])
247 # Make sure we don't let ZLIB be added if we didn't want it.
248 if test x$with_system_zlib = xyes ; then
250 noconfigdirs="$noconfigdirs zlib"
253 # Don't compile the bundled readline/libreadline.a if --with-system-readline
255 if test x$with_system_readline = xyes ; then
256 noconfigdirs="$noconfigdirs readline"
260 [AS_HELP_STRING([--with-zstd], [Support zstd compressed debug sections (default=auto)])])
262 # some tools are so dependent upon X11 that if we're not building with X,
263 # it's not even worth trying to configure, much less build, that tool.
266 yes | "") ;; # the default value for this tree is that X11 is available
268 skipdirs="${skipdirs} tk itcl libgui"
269 # We won't be able to build gdbtk without X.
272 *) echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
275 # Some are only suitable for cross toolchains.
276 # Remove these if host=target.
277 cross_only="target-libgloss target-newlib target-opcodes"
279 case $is_cross_compiler in
280 no) skipdirs="${skipdirs} ${cross_only}" ;;
283 # If both --with-headers and --with-libs are specified, default to
285 if test x"${with_headers}" != x && test x"${with_headers}" != xno \
286 && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
287 if test x"${with_newlib}" = x ; then
292 # Recognize --with-newlib/--without-newlib.
293 case ${with_newlib} in
294 no) skipdirs="${skipdirs} target-newlib" ;;
295 yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
298 AC_ARG_ENABLE(as-accelerator-for,
299 [AS_HELP_STRING([--enable-as-accelerator-for=ARG],
300 [build as offload target compiler.
301 Specify offload host triple by ARG])])
303 AC_ARG_ENABLE(offload-targets,
304 [AS_HELP_STRING([--enable-offload-targets=LIST],
305 [enable offloading to devices from comma-separated LIST of
306 TARGET[=DIR]. Use optional path to find offload target compiler
309 if test x"$enable_offload_targets" = x; then
310 AC_MSG_ERROR([no offload targets specified])
312 ], [enable_offload_targets=])
314 AC_ARG_ENABLE(offload-defaulted,
315 [AS_HELP_STRING([--enable-offload-defaulted]
316 [If enabled, configured but not installed offload compilers and
317 libgomp plugins are silently ignored. Useful for distribution
318 compilers where those are in separate optional packages.])],
319 [enable_offload_defaulted=$enableval],
320 [enable_offload_defaulted=])
322 # Handle --enable-gold, --enable-ld.
323 # --disable-gold [--enable-ld]
324 # Build only ld. Default option.
325 # --enable-gold [--enable-ld]
326 # Build both gold and ld. Install gold as "ld.gold", install ld
327 # as "ld.bfd" and "ld".
328 # --enable-gold=default [--enable-ld]
329 # Build both gold and ld. Install gold as "ld.gold" and "ld",
330 # install ld as "ld.bfd".
331 # --enable-gold[=default] --disable-ld
332 # Build only gold, which is then installed as both "ld.gold" and "ld".
333 # --enable-gold --enable-ld=default
334 # Build both gold (installed as "ld.gold") and ld (installed as "ld"
336 # In other words, ld is default
337 # --enable-gold=default --enable-ld=default
342 [AS_HELP_STRING([[--enable-gold[=ARG]]],
343 [build gold @<:@ARG={default,yes,no}@:>@])],
344 ENABLE_GOLD=$enableval,
346 case "${ENABLE_GOLD}" in
348 # Check for ELF target.
351 *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
352 | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
353 | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
354 | *-*-solaris2* | *-*-nto* | *-*-nacl* | *-*-haiku*)
356 *-*-linux*aout* | *-*-linux*oldld*)
364 if test "$is_elf" = "yes"; then
365 # Check for target supported by gold.
367 i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
368 | aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-*)
369 configdirs="$configdirs gold"
370 if test x${ENABLE_GOLD} = xdefault; then
381 AC_MSG_ERROR([invalid --enable-gold argument])
386 [AS_HELP_STRING([[--enable-ld[=ARG]]],
387 [build ld @<:@ARG={default,yes,no}@:>@])],
388 ENABLE_LD=$enableval,
391 case "${ENABLE_LD}" in
393 if test x${default_ld} != x; then
394 AC_MSG_ERROR([either gold or ld can be the default ld])
400 if test x${ENABLE_GOLD} != xyes; then
401 AC_MSG_WARN([neither ld nor gold are enabled])
403 configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
406 AC_MSG_ERROR([invalid --enable-ld argument])
410 AC_ARG_ENABLE(gprofng,
411 [AS_HELP_STRING([[--disable-gprofng]], [do not build gprofng])],
412 enable_gprofng=$enableval,
414 if test "$enable_gprofng" = "yes"; then
418 x86_64-*-linux* | i?86-*-linux* | aarch64-*-linux* | riscv64-*-linux*)
419 configdirs="$configdirs gprofng"
426 # Decide the default method for compressing debug sections.
427 # Provide a configure time option to override our default.
428 AC_ARG_ENABLE(compressed_debug_sections,
429 [AS_HELP_STRING([--enable-compressed-debug-sections={all,gas,gold,ld,none}],
430 [Enable compressed debug sections for gas, gold or ld by
433 if test x"$enable_compressed_debug_sections" = xyes; then
434 AC_MSG_ERROR([no program with compressed debug sections specified])
436 ], [enable_compressed_debug_sections=])
438 # Select default compression algorithm.
439 AC_ARG_ENABLE(default_compressed_debug_sections_algorithm,
440 [AS_HELP_STRING([--enable-default-compressed-debug-sections-algorithm={zlib,zstd}],
441 [Default compression algorithm for --enable-compressed-debug-sections.])],
442 [], [default_compressed_debug_sections_algorithm=])
444 # Configure extra directories which are host specific
448 configdirs="$configdirs libtermcap" ;;
451 # A target can indicate whether a language isn't supported for some reason.
452 # Only spaces may be used in this macro; not newlines or tabs.
453 unsupported_languages=
455 # Remove more programs from consideration, based on the host or
456 # target this usually means that a port of the program doesn't
460 i[[3456789]]86-*-msdosdjgpp*)
461 noconfigdirs="$noconfigdirs tcl tk itcl"
465 # Default to --disable-year2038 until we can handle differences between
466 # projects that use gnulib (which understands year 2038) and projects that
468 AC_ARG_ENABLE(year2038,
469 AS_HELP_STRING([--enable-year2038],
470 [enable support for timestamps past the year 2038]),
471 ENABLE_YEAR2038=$enableval,
474 if test "${ENABLE_YEAR2038}" = "no" ; then
478 AC_ARG_ENABLE(libquadmath,
479 AS_HELP_STRING([--disable-libquadmath],
480 [do not build libquadmath directory]),
481 ENABLE_LIBQUADMATH=$enableval,
482 ENABLE_LIBQUADMATH=yes)
483 if test "${ENABLE_LIBQUADMATH}" = "no" ; then
484 noconfigdirs="$noconfigdirs target-libquadmath"
488 AC_ARG_ENABLE(libquadmath-support,
489 AS_HELP_STRING([--disable-libquadmath-support],
490 [disable libquadmath support for Fortran]),
491 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
492 ENABLE_LIBQUADMATH_SUPPORT=yes)
493 enable_libquadmath_support=
494 if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
495 enable_libquadmath_support=no
499 AC_ARG_ENABLE(libada,
500 [AS_HELP_STRING([--enable-libada], [build libada directory])],
501 ENABLE_LIBADA=$enableval,
503 if test "${ENABLE_LIBADA}" != "yes" ; then
504 noconfigdirs="$noconfigdirs gnattools"
507 AC_ARG_ENABLE(libgm2,
508 [AS_HELP_STRING([--enable-libgm2], [build libgm2 directory])],
509 ENABLE_LIBGM2=$enableval,
511 if test "${ENABLE_LIBGM2}" != "yes" ; then
512 noconfigdirs="$noconfigdirs gm2tools"
515 AC_ARG_ENABLE(libssp,
516 [AS_HELP_STRING([--enable-libssp], [build libssp directory])],
517 ENABLE_LIBSSP=$enableval,
520 AC_ARG_ENABLE(libstdcxx,
521 AS_HELP_STRING([--disable-libstdcxx],
522 [do not build libstdc++-v3 directory]),
523 ENABLE_LIBSTDCXX=$enableval,
524 ENABLE_LIBSTDCXX=default)
525 [if test "${ENABLE_LIBSTDCXX}" = "no" ; then
526 noconfigdirs="$noconfigdirs target-libstdc++-v3"
529 # Enable libgomp by default on hosted POSIX systems, and a few others.
530 if test x$enable_libgomp = x ; then
532 *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
534 *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
536 *-*-solaris2* | *-*-hpux11*)
538 *-*-darwin* | *-*-aix*)
540 nvptx*-*-* | amdgcn*-*-*)
543 noconfigdirs="$noconfigdirs target-libgomp"
548 # Disable libatomic on unsupported systems.
549 if test -d ${srcdir}/libatomic; then
550 if test x$enable_libatomic = x; then
551 AC_MSG_CHECKING([for libatomic support])
552 if (srcdir=${srcdir}/libatomic; \
553 . ${srcdir}/configure.tgt; \
554 test -n "$UNSUPPORTED")
557 noconfigdirs="$noconfigdirs target-libatomic"
564 # Disable libitm on unsupported systems.
565 if test -d ${srcdir}/libitm; then
566 if test x$enable_libitm = x; then
567 AC_MSG_CHECKING([for libitm support])
568 if (srcdir=${srcdir}/libitm; \
569 . ${srcdir}/configure.tgt; \
570 test -n "$UNSUPPORTED")
573 noconfigdirs="$noconfigdirs target-libitm"
580 # Disable libsanitizer on unsupported systems.
581 if test -d ${srcdir}/libsanitizer; then
582 if test x$enable_libsanitizer = x; then
583 AC_MSG_CHECKING([for libsanitizer support])
584 if (srcdir=${srcdir}/libsanitizer; \
585 . ${srcdir}/configure.tgt; \
586 test -n "$UNSUPPORTED")
589 noconfigdirs="$noconfigdirs target-libsanitizer"
596 # Disable libvtv on unsupported systems.
597 if test -d ${srcdir}/libvtv; then
598 if test x$enable_libvtv = x; then
599 AC_MSG_CHECKING([for libvtv support])
600 if (srcdir=${srcdir}/libvtv; \
601 . ${srcdir}/configure.tgt; \
602 test "$VTV_SUPPORTED" != "yes")
605 noconfigdirs="$noconfigdirs target-libvtv"
612 # Disable libquadmath for some systems.
615 noconfigdirs="$noconfigdirs target-libquadmath"
617 # libquadmath is unused on AIX and libquadmath build process use of
618 # LD_LIBRARY_PATH can break AIX bootstrap.
619 powerpc-*-aix* | rs6000-*-aix*)
620 noconfigdirs="$noconfigdirs target-libquadmath"
624 # Disable libssp for some systems.
627 # No hosted I/O support.
628 noconfigdirs="$noconfigdirs target-libssp"
631 noconfigdirs="$noconfigdirs target-libssp"
633 powerpc-*-aix* | rs6000-*-aix*)
634 noconfigdirs="$noconfigdirs target-libssp"
637 # No hosted I/O support.
638 noconfigdirs="$noconfigdirs target-libssp"
641 # libssp uses a misaligned load to trigger a fault, but the RL78
642 # doesn't fault for those - instead, it gives a build-time error
643 # for explicit misaligned loads.
644 noconfigdirs="$noconfigdirs target-libssp"
647 # No hosted I/O support.
648 noconfigdirs="$noconfigdirs target-libssp"
652 # Disable libstdc++-v3 for some systems.
653 # Allow user to override this if they pass --enable-libstdcxx
654 if test "${ENABLE_LIBSTDCXX}" = "default" ; then
657 # VxWorks uses the Dinkumware C++ library.
658 noconfigdirs="$noconfigdirs target-libstdc++-v3"
661 # Not ported/fails to build when using newlib.
662 noconfigdirs="$noconfigdirs target-libstdc++-v3"
665 # the C++ libraries don't build on top of CE's C libraries
666 noconfigdirs="$noconfigdirs target-libstdc++-v3"
669 noconfigdirs="$noconfigdirs target-libstdc++-v3"
672 noconfigdirs="$noconfigdirs target-libstdc++-v3"
675 noconfigdirs="$noconfigdirs target-libstdc++-v3"
680 # Disable C++ on systems where it is known to not work.
681 # For testing, you can override this with --enable-languages=c++.
682 case ,${enable_languages}, in
688 unsupported_languages="$unsupported_languages c++"
694 # Disable Objc on systems where it is known to not work.
695 # For testing, you can override this with --enable-languages=objc.
696 case ,${enable_languages}, in
702 unsupported_languages="$unsupported_languages objc"
708 # Disable D on systems where it is known to not work.
709 # For testing, you can override this with --enable-languages=d.
710 case ,${enable_languages}, in
716 unsupported_languages="$unsupported_languages d"
722 # Disable libphobos on unsupported systems.
723 # For testing, you can override this with --enable-libphobos.
724 if test -d ${srcdir}/libphobos; then
725 if test x$enable_libphobos = x; then
726 AC_MSG_CHECKING([for libphobos support])
727 if (srcdir=${srcdir}/libphobos; \
728 . ${srcdir}/configure.tgt; \
729 test "$LIBPHOBOS_SUPPORTED" != "yes")
732 noconfigdirs="$noconfigdirs target-libphobos"
739 # Disable Fortran for some systems.
742 # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
743 unsupported_languages="$unsupported_languages fortran"
746 unsupported_languages="$unsupported_languages fortran"
750 # Disable libffi for some systems.
754 i[[3456789]]86-*-darwin*)
756 x86_64-*-darwin[[912]]*)
759 noconfigdirs="$noconfigdirs target-libffi"
762 noconfigdirs="$noconfigdirs target-libffi"
765 noconfigdirs="$noconfigdirs target-libffi"
768 noconfigdirs="$noconfigdirs target-libffi"
771 noconfigdirs="$noconfigdirs target-libffi"
774 noconfigdirs="$noconfigdirs target-libffi"
777 noconfigdirs="$noconfigdirs target-libffi"
780 noconfigdirs="$noconfigdirs target-libffi"
783 noconfigdirs="$noconfigdirs target-libffi"
786 noconfigdirs="$noconfigdirs target-libffi"
789 noconfigdirs="$noconfigdirs target-libffi"
792 noconfigdirs="$noconfigdirs target-libffi"
795 noconfigdirs="$noconfigdirs target-libffi"
797 cris-*-* | crisv32-*-*)
801 *) # See PR46792 regarding target-libffi.
802 noconfigdirs="$noconfigdirs target-libffi";;
806 noconfigdirs="$noconfigdirs target-libffi"
811 noconfigdirs="$noconfigdirs target-libffi"
814 noconfigdirs="$noconfigdirs target-libffi"
816 i[[3456789]]86-w64-mingw*)
817 noconfigdirs="$noconfigdirs target-libffi"
819 i[[3456789]]86-*-mingw*)
820 noconfigdirs="$noconfigdirs target-libffi"
823 noconfigdirs="$noconfigdirs target-libffi"
826 noconfigdirs="$noconfigdirs target-libffi"
833 noconfigdirs="$noconfigdirs target-libffi"
836 noconfigdirs="$noconfigdirs target-libffi"
840 # Disable the go frontend on systems where it is known to not work. Please keep
841 # this in sync with contrib/config-list.mk.
843 *-*-darwin* | *-*-cygwin* | *-*-mingw* | bpf-* )
844 unsupported_languages="$unsupported_languages go"
848 # Only allow gdbserver on some systems.
849 if test -d ${srcdir}/gdbserver; then
850 if test x$enable_gdbserver = x; then
851 AC_MSG_CHECKING([for gdbserver support])
852 if (srcdir=${srcdir}/gdbserver; \
853 . ${srcdir}/configure.srv; \
854 test -n "$UNSUPPORTED")
857 noconfigdirs="$noconfigdirs gdbserver"
864 # Disable libgo for some systems where it is known to not work.
865 # For testing, you can easily override this with --enable-libgo.
866 if test x$enable_libgo = x; then
870 noconfigdirs="$noconfigdirs target-libgo"
872 *-*-cygwin* | *-*-mingw*)
873 noconfigdirs="$noconfigdirs target-libgo"
876 noconfigdirs="$noconfigdirs target-libgo"
881 # Default libgloss CPU subdirectory.
882 libgloss_dir="$target_cpu"
885 sh*-*-pe|mips*-*-pe|*arm-wince-pe)
894 cris-*-* | crisv32-*-*)
913 libgloss_dir=loongarch
915 m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
935 # Disable newlib and libgloss for various target OSes.
938 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
940 i[[3456789]]86-*-linux*)
941 # This section makes it possible to build newlib natively on linux.
942 # If we are using a cross compiler then don't configure newlib.
943 if test x${is_cross_compiler} != xno ; then
944 noconfigdirs="$noconfigdirs target-newlib"
946 noconfigdirs="$noconfigdirs target-libgloss"
947 # If we are not using a cross compiler, do configure newlib.
948 # Note however, that newlib will only be configured in this situation
949 # if the --with-newlib option has been given, because otherwise
950 # 'target-newlib' will appear in skipdirs.
952 i[[3456789]]86-*-rdos*)
953 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
955 sh*-*-pe|mips*-*-pe|arm-wince-pe)
956 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
959 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
962 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
965 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
968 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
971 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
974 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
977 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
979 *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
980 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
983 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
986 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
989 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
992 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
995 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
998 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1001 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1005 # The ARM simulator has been deprecated for all ARM targets.
1008 noconfigdirs="$noconfigdirs sim"
1016 noconfigdirs="$noconfigdirs ld gas gdb gprof"
1017 noconfigdirs="$noconfigdirs sim target-rda"
1022 noconfigdirs="$noconfigdirs ld gas gdb gprof"
1023 noconfigdirs="$noconfigdirs target-rda"
1026 noconfigdirs="$noconfigdirs ld gas gdb gprof"
1027 noconfigdirs="$noconfigdirs sim target-rda"
1029 i[[3456789]]86-*-darwin*)
1030 noconfigdirs="$noconfigdirs ld gprof"
1031 noconfigdirs="$noconfigdirs sim target-rda"
1033 x86_64-*-darwin[[912]]*)
1034 noconfigdirs="$noconfigdirs ld gas gprof"
1035 noconfigdirs="$noconfigdirs sim target-rda"
1038 noconfigdirs="$noconfigdirs ld gas gdb gprof"
1039 noconfigdirs="$noconfigdirs sim target-rda"
1044 if test "x$with_gmp" = x \
1045 && ! test -d ${srcdir}/gmp \
1046 && test -f /usr/local/include/gmp.h; then
1051 # Remove unsupported stuff on all kaOS configurations.
1052 noconfigdirs="$noconfigdirs target-libgloss"
1059 noconfigdirs="$noconfigdirs target-libgloss"
1062 noconfigdirs="$noconfigdirs target-libgloss"
1064 # The tpf target doesn't support gdb yet.
1066 noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
1069 noconfigdirs="$noconfigdirs target-rda"
1074 # ld works, but does not support shared libraries.
1075 # gas doesn't generate exception information.
1076 noconfigdirs="$noconfigdirs gas ld"
1079 noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
1082 # newlib is not 64 bit ready
1083 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1086 noconfigdirs="$noconfigdirs target-libobjc target-libbacktrace"
1088 sh*-*-pe|mips*-*-pe|*arm-wince-pe)
1089 noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
1092 noconfigdirs="$noconfigdirs sim"
1095 noconfigdirs="$noconfigdirs target-libgloss"
1098 noconfigdirs="$noconfigdirs ld target-libgloss"
1101 if test x${with_avrlibc} != xno; then
1102 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1105 c4x-*-* | tic4x-*-*)
1106 noconfigdirs="$noconfigdirs target-libgloss"
1109 noconfigdirs="$noconfigdirs target-libgloss gdb"
1112 noconfigdirs="$noconfigdirs target-libgloss"
1115 noconfigdirs="$noconfigdirs gdb"
1118 noconfigdirs="$noconfigdirs gdb"
1121 noconfigdirs="$noconfigdirs target-rda gprof"
1124 noconfigdirs="$noconfigdirs"
1127 noconfigdirs="$noconfigdirs target-libgloss"
1130 noconfigdirs="$noconfigdirs target-libgloss"
1132 hppa1.1-*-osf* | hppa1.1-*-bsd* )
1135 noconfigdirs="$noconfigdirs gdb"
1138 noconfigdirs="$noconfigdirs gdb ld"
1146 hppa*-*-openbsd* | \
1152 noconfigdirs="$noconfigdirs ld"
1155 noconfigdirs="$noconfigdirs gdb"
1158 # No gdb support yet.
1159 noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1162 # No ld support yet.
1163 noconfigdirs="$noconfigdirs gdb libgui itcl ld"
1166 # No ld support yet.
1167 noconfigdirs="$noconfigdirs libgui itcl ld"
1169 i[[3456789]]86-w64-mingw*)
1171 i[[3456789]]86-*-mingw*)
1172 target_configdirs="$target_configdirs target-winsup"
1175 target_configdirs="$target_configdirs target-libtermcap target-winsup"
1176 noconfigdirs="$noconfigdirs target-libgloss"
1177 # always build newlib if winsup directory is present.
1178 if test -d "$srcdir/winsup/cygwin"; then
1179 skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1180 elif test -d "$srcdir/newlib"; then
1181 echo "Warning: winsup/cygwin is missing so newlib can't be built."
1184 i[[3456789]]86-*-pe)
1185 noconfigdirs="$noconfigdirs target-libgloss"
1187 i[[3456789]]86-*-sco3.2v5*)
1188 # The linker does not yet know about weak symbols in COFF,
1189 # and is not configured to handle mixed ELF and COFF.
1190 noconfigdirs="$noconfigdirs ld target-libgloss"
1192 i[[3456789]]86-*-sco*)
1193 noconfigdirs="$noconfigdirs gprof target-libgloss"
1195 i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1196 noconfigdirs="$noconfigdirs target-libgloss"
1198 i[[3456789]]86-*-sysv4*)
1199 noconfigdirs="$noconfigdirs target-libgloss"
1201 i[[3456789]]86-*-beos*)
1202 noconfigdirs="$noconfigdirs gdb"
1204 i[[3456789]]86-*-rdos*)
1205 noconfigdirs="$noconfigdirs gdb"
1208 noconfigdirs="$noconfigdirs gdb gdbserver sim"
1211 noconfigdirs="$noconfigdirs gdb"
1214 noconfigdirs="$noconfigdirs sim"
1217 noconfigdirs="$noconfigdirs ld gas gdb gprof sim"
1218 noconfigdirs="$noconfigdirs $target_libraries"
1221 noconfigdirs="$noconfigdirs gdb gprof"
1224 # copied from rs6000-*-* entry
1225 noconfigdirs="$noconfigdirs gprof"
1227 powerpc*-*-winnt* | powerpc*-*-pe*)
1228 target_configdirs="$target_configdirs target-winsup"
1229 noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1230 # always build newlib.
1231 skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1233 # This is temporary until we can link against shared libraries
1234 powerpcle-*-solaris*)
1235 noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1238 noconfigdirs="$noconfigdirs gdb"
1241 noconfigdirs="$noconfigdirs gprof"
1244 noconfigdirs="$noconfigdirs gprof"
1247 noconfigdirs="$noconfigdirs gprof"
1250 noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1253 noconfigdirs="$noconfigdirs gprof"
1255 mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1256 if test x$with_newlib = xyes; then
1257 noconfigdirs="$noconfigdirs gprof"
1261 noconfigdirs="$noconfigdirs gprof target-libgloss"
1264 noconfigdirs="$noconfigdirs gprof target-libgloss"
1267 noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1271 mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1272 | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1273 noconfigdirs="$noconfigdirs ld gas gprof"
1276 noconfigdirs="$noconfigdirs gprof"
1279 noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1286 noconfigdirs="$noconfigdirs target-libgloss" ;;
1290 if test x${is_cross_compiler} = xno ; then
1295 noconfigdirs="$noconfigdirs sim"
1297 tilepro*-*-* | tilegx*-*-*)
1298 noconfigdirs="$noconfigdirs sim"
1301 noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1304 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1307 noconfigdirs="$noconfigdirs ld"
1309 loongarch*-*-linux*)
1312 noconfigdirs="$noconfigdirs gprof"
1316 # If we aren't building newlib, then don't build libgloss, since libgloss
1317 # depends upon some newlib header files.
1318 case "${noconfigdirs}" in
1319 *target-libgloss*) ;;
1320 *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1323 # Work in distributions that contain no compiler tools, like Autoconf.
1324 host_makefile_frag=/dev/null
1325 if test -d ${srcdir}/config ; then
1327 i[[3456789]]86-*-msdosdjgpp*)
1328 host_makefile_frag="config/mh-djgpp"
1331 ACX_CHECK_CYGWIN_CAT_WORKS
1332 host_makefile_frag="config/mh-cygwin"
1335 host_makefile_frag="config/mh-mingw"
1338 host_makefile_frag="config/mh-alpha-linux"
1341 host_makefile_frag="config/mh-pa"
1344 host_makefile_frag="config/mh-pa"
1346 i?86-*-darwin[[89]]* | i?86-*-darwin1[[0-7]]* | powerpc*-*-darwin*)
1347 host_makefile_frag="config/mh-darwin"
1350 host_makefile_frag="config/mh-ppc-aix"
1353 host_makefile_frag="config/mh-ppc-aix"
1358 if test "${build}" != "${host}" ; then
1359 AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1360 AS_FOR_BUILD=${AS_FOR_BUILD-as}
1361 CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1362 CPP_FOR_BUILD="${CPP_FOR_BUILD-\$(CC_FOR_BUILD) -E}"
1363 CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1364 DSYMUTIL_FOR_BUILD=${DSYMUTIL_FOR_BUILD-dsymutil}
1365 GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1366 GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1367 GDC_FOR_BUILD=${GDC_FOR_BUILD-gdc}
1368 DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1369 LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1370 NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1371 RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1372 WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1373 WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1375 AR_FOR_BUILD="\$(AR)"
1376 AS_FOR_BUILD="\$(AS)"
1377 CC_FOR_BUILD="\$(CC)"
1378 CXX_FOR_BUILD="\$(CXX)"
1379 DSYMUTIL_FOR_BUILD="\$(DSYMUTIL)"
1380 GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1381 GOC_FOR_BUILD="\$(GOC)"
1382 GDC_FOR_BUILD="\$(GDC)"
1383 DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1384 LD_FOR_BUILD="\$(LD)"
1385 NM_FOR_BUILD="\$(NM)"
1386 RANLIB_FOR_BUILD="\$(RANLIB)"
1387 WINDRES_FOR_BUILD="\$(WINDRES)"
1388 WINDMC_FOR_BUILD="\$(WINDMC)"
1394 # We must set the default linker to the linker used by gcc for the correct
1395 # operation of libtool. If LD is not defined and we are using gcc, try to
1396 # set the LD default to the ld used by gcc.
1397 if test -z "$LD"; then
1398 if test "$GCC" = yes; then
1401 gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1403 gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1405 case $gcc_prog_ld in
1406 # Accept absolute paths.
1407 [[\\/]* | [A-Za-z]:[\\/]*)]
1408 LD="$gcc_prog_ld" ;;
1413 # Check whether -static-libstdc++ -static-libgcc is supported.
1415 if test "$GCC" = yes; then
1416 saved_LDFLAGS="$LDFLAGS"
1418 LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1419 AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1421 AC_LINK_IFELSE([AC_LANG_SOURCE([
1422 #if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1423 #error -static-libstdc++ not implemented
1426 [AC_MSG_RESULT([yes]); have_static_libs=yes],
1427 [AC_MSG_RESULT([no])])
1430 LDFLAGS="$saved_LDFLAGS"
1436 ACX_PROG_CMP_IGNORE_INITIAL
1438 AC_ARG_ENABLE([bootstrap],
1439 [AS_HELP_STRING([--enable-bootstrap],
1440 [enable bootstrapping @<:@yes if native build@:>@])],,
1441 enable_bootstrap=default)
1443 # Issue errors and warnings for invalid/strange bootstrap combinations.
1444 if test -r $srcdir/gcc/configure; then
1450 case "$have_compiler:$host:$target:$enable_bootstrap" in
1453 # Default behavior. Enable bootstrap if we have a compiler
1454 # and we are in a native configuration.
1455 yes:$build:$build:default)
1456 enable_bootstrap=yes ;;
1459 enable_bootstrap=no ;;
1461 # We have a compiler and we are in a native configuration, bootstrap is ok
1462 yes:$build:$build:yes)
1465 # Other configurations, but we have a compiler. Assume the user knows
1468 AC_MSG_WARN([trying to bootstrap a cross compiler])
1471 # No compiler: if they passed --enable-bootstrap explicitly, fail
1473 AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1475 # Fail if wrong command line
1477 AC_MSG_ERROR([invalid option for --enable-bootstrap])
1481 # When bootstrapping with GCC, build stage 1 in C++14 mode to ensure that a
1482 # C++14 compiler can still start the bootstrap. Otherwise, if building GCC,
1483 # require C++14 (or higher).
1484 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
1485 CXX="$CXX -std=c++14"
1486 elif test "$have_compiler" = yes; then
1487 AX_CXX_COMPILE_STDCXX(14)
1489 if test "${build}" != "${host}"; then
1490 AX_CXX_COMPILE_STDCXX(14, [], [], [_FOR_BUILD])
1494 AC_ARG_ENABLE([pgo-build],
1495 [AS_HELP_STRING([--enable-pgo-build[[=lto]]],
1496 [enable the PGO build])],
1497 [enable_pgo_build=$enableval],
1498 [enable_pgo_build=no])
1500 # Issue errors and warnings for invalid/strange PGO build combinations.
1501 case "$have_compiler:$host:$target:$enable_pgo_build" in
1504 # Allow the PGO build only if we aren't building a compiler and
1505 # we are in a native configuration.
1506 no:$build:$build:yes | no:$build:$build:lto) ;;
1508 # Disallow the PGO bootstrap if we are building a compiler.
1509 yes:*:*:yes | yes:*:*:lto)
1510 AC_MSG_ERROR([cannot perform the PGO bootstrap when building a compiler]) ;;
1513 AC_MSG_ERROR([invalid option for --enable-pgo-build])
1517 if test "$enable_pgo_build" != "no"; then
1518 AC_MSG_CHECKING([whether the compiler supports -fprofile-generate])
1519 old_CFLAGS="$CFLAGS"
1520 PGO_BUILD_GEN_CFLAGS="-fprofile-generate"
1521 CFLAGS="$CFLAGS $PGO_BUILD_CFLAGS"
1522 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int foo;])],,
1523 [PGO_BUILD_GEN_CFLAGS=])
1524 CFLAGS="$old_CFLAGS"
1525 if test -n "$PGO_BUILD_GEN_CFLAGS"; then
1526 AC_MSG_RESULT([yes])
1527 PGO_BUILD_USE_CFLAGS="-fprofile-use"
1530 AC_MSG_ERROR([cannot perform the PGO build without -fprofile-generate])
1533 if test "$enable_pgo_build" = "lto"; then
1534 AC_MSG_CHECKING([whether the compiler supports -flto=jobserver -ffat-lto-objects])
1535 old_CFLAGS="$CFLAGS"
1536 PGO_BUILD_LTO_CFLAGS="-flto=jobserver -ffat-lto-objects"
1537 CFLAGS="$CFLAGS $PGO_BUILD_LTO_CFLAGS"
1538 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int foo;])],,
1539 [PGO_BUILD_LTO_CFLAGS=])
1540 CFLAGS="$old_CFLAGS"
1541 if test -n "$PGO_BUILD_LTO_CFLAGS"; then
1542 AC_MSG_RESULT([yes])
1545 AC_MSG_WARN([LTO is disabled for the PGO build])
1549 AC_SUBST(PGO_BUILD_GEN_CFLAGS)
1550 AC_SUBST(PGO_BUILD_USE_CFLAGS)
1551 AC_SUBST(PGO_BUILD_LTO_CFLAGS)
1553 # Used for setting $lt_cv_objdir
1556 # Check for GMP, MPFR and MPC
1559 if test -d ${srcdir}/gcc ; then
1563 if test -d ${srcdir}/gdb ; then
1564 if test "x$enable_gdb" != xno; then
1569 gmplibs="-lmpfr -lgmp"
1570 if test x"$require_mpc" = "xyes" ; then
1571 gmplibs="-lmpc $gmplibs"
1576 # Specify a location for mpc
1577 # check for this first so it ends up on the link line before mpfr.
1579 [AS_HELP_STRING([--with-mpc=PATH],
1580 [specify prefix directory for installed MPC package.
1581 Equivalent to --with-mpc-include=PATH/include
1582 plus --with-mpc-lib=PATH/lib])])
1583 AC_ARG_WITH(mpc-include,
1584 [AS_HELP_STRING([--with-mpc-include=PATH],
1585 [specify directory for installed MPC include files])])
1586 AC_ARG_WITH(mpc-lib,
1587 [AS_HELP_STRING([--with-mpc-lib=PATH],
1588 [specify directory for the installed MPC library])])
1590 if test "x$with_mpc" != x; then
1591 gmplibs="-L$with_mpc/lib $gmplibs"
1592 gmpinc="-I$with_mpc/include $gmpinc"
1594 if test "x$with_mpc_include" != x; then
1595 gmpinc="-I$with_mpc_include $gmpinc"
1597 if test "x$with_mpc_lib" != x; then
1598 gmplibs="-L$with_mpc_lib $gmplibs"
1600 if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1601 gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1602 gmpinc='-I$$s/mpc/src '"$gmpinc"
1603 # Do not test the mpc version. Assume that it is sufficient, since
1604 # it is in the source tree, and the library has not been built yet
1605 # but it would be included on the link line in the version check below
1606 # hence making the test fail.
1610 # Specify a location for mpfr
1611 # check for this first so it ends up on the link line before gmp.
1613 [AS_HELP_STRING([--with-mpfr=PATH],
1614 [specify prefix directory for installed MPFR package.
1615 Equivalent to --with-mpfr-include=PATH/include
1616 plus --with-mpfr-lib=PATH/lib])])
1617 AC_ARG_WITH(mpfr-include,
1618 [AS_HELP_STRING([--with-mpfr-include=PATH],
1619 [specify directory for installed MPFR include files])])
1620 AC_ARG_WITH(mpfr-lib,
1621 [AS_HELP_STRING([--with-mpfr-lib=PATH],
1622 [specify directory for the installed MPFR library])])
1624 if test "x$with_mpfr" != x; then
1625 gmplibs="-L$with_mpfr/lib $gmplibs"
1626 gmpinc="-I$with_mpfr/include $gmpinc"
1628 if test "x$with_mpfr_include" != x; then
1629 gmpinc="-I$with_mpfr_include $gmpinc"
1631 if test "x$with_mpfr_lib" != x; then
1632 gmplibs="-L$with_mpfr_lib $gmplibs"
1634 if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1635 # MPFR v3.1.0 moved the sources into a src sub-directory.
1636 if ! test -d ${srcdir}/mpfr/src; then
1638 Building GCC with MPFR in the source tree is only handled for MPFR 3.1.0+.])
1640 gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1641 gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1642 extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1643 # Do not test the mpfr version. Assume that it is sufficient, since
1644 # it is in the source tree, and the library has not been built yet
1645 # but it would be included on the link line in the version check below
1646 # hence making the test fail.
1650 # Specify a location for gmp
1652 [AS_HELP_STRING([--with-gmp=PATH],
1653 [specify prefix directory for the installed GMP package.
1654 Equivalent to --with-gmp-include=PATH/include
1655 plus --with-gmp-lib=PATH/lib])])
1656 AC_ARG_WITH(gmp-include,
1657 [AS_HELP_STRING([--with-gmp-include=PATH],
1658 [specify directory for installed GMP include files])])
1659 AC_ARG_WITH(gmp-lib,
1660 [AS_HELP_STRING([--with-gmp-lib=PATH],
1661 [specify directory for the installed GMP library])])
1664 if test "x$with_gmp" != x; then
1665 gmplibs="-L$with_gmp/lib $gmplibs"
1666 gmpinc="-I$with_gmp/include $gmpinc"
1668 if test "x$with_gmp_include" != x; then
1669 gmpinc="-I$with_gmp_include $gmpinc"
1671 if test "x$with_gmp_lib" != x; then
1672 gmplibs="-L$with_gmp_lib $gmplibs"
1674 if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1675 gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1676 gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1677 extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1678 extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1679 extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1680 # Do not test the gmp version. Assume that it is sufficient, since
1681 # it is in the source tree, and the library has not been built yet
1682 # but it would be included on the link line in the version check below
1683 # hence making the test fail.
1687 if test "x$require_gmp" = xyes && test "x$have_gmp" = xno; then
1689 saved_CFLAGS="$CFLAGS"
1690 CFLAGS="$CFLAGS $gmpinc"
1691 # Check for the recommended and required versions of GMP.
1692 AC_MSG_CHECKING([for the correct version of gmp.h])
1693 AC_TRY_COMPILE([#include "gmp.h"],[
1694 #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1695 #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1696 #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1699 ], [AC_TRY_COMPILE([#include <gmp.h>],[
1700 #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1701 #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1702 #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1705 ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1706 [AC_MSG_RESULT([no]); have_gmp=no])
1708 # If we have GMP, check the MPFR version.
1709 if test x"$have_gmp" = xyes; then
1710 # Check for the recommended and required versions of MPFR.
1711 AC_MSG_CHECKING([for the correct version of mpfr.h])
1712 AC_TRY_COMPILE([#include <gmp.h>
1713 #include <mpfr.h>],[
1714 #if MPFR_VERSION < MPFR_VERSION_NUM(3,1,0)
1717 ], [AC_TRY_COMPILE([#include <gmp.h>
1718 #include <mpfr.h>],[
1719 #if MPFR_VERSION < MPFR_VERSION_NUM(3,1,6)
1722 ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1723 [AC_MSG_RESULT([no]); have_gmp=no])
1726 # Check for the MPC header version.
1727 if test "x$require_mpc" = xyes && test x"$have_gmp" = xyes ; then
1728 # Check for the recommended and required versions of MPC.
1729 AC_MSG_CHECKING([for the correct version of mpc.h])
1730 AC_TRY_COMPILE([#include <mpc.h>],[
1731 #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1734 ], [AC_TRY_COMPILE([#include <mpc.h>],[
1735 #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1738 ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1739 [AC_MSG_RESULT([no]); have_gmp=no])
1742 # Now check the MPFR library.
1743 if test x"$have_gmp" = xyes; then
1745 LIBS="$LIBS $gmplibs"
1746 AC_MSG_CHECKING([for the correct version of the gmp/mpfr libraries])
1747 AC_TRY_LINK([#include <mpfr.h>],[
1753 mpfr_atan2 (n, n, x, MPFR_RNDN);
1754 mpfr_erfc (n, x, MPFR_RNDN);
1755 mpfr_subnormalize (x, t, MPFR_RNDN);
1758 ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1762 # Now check the MPC library
1763 if test "x$require_mpc" = xyes && test x"$have_gmp" = xyes; then
1765 LIBS="$LIBS $gmplibs"
1766 AC_MSG_CHECKING([for the correct version of the mpc libraries])
1767 AC_TRY_LINK([#include <mpc.h>],[
1770 mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1771 mpc_cosh (c, c, MPC_RNDNN);
1772 mpc_pow (c, c, c, MPC_RNDNN);
1773 mpc_acosh (c, c, MPC_RNDNN);
1775 ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1779 CFLAGS="$saved_CFLAGS"
1781 # The library versions listed in the error message below should match
1782 # the HARD-minimums enforced above.
1783 if test x$have_gmp != xyes; then
1784 if test -d ${srcdir}/gcc ; then
1785 AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 3.1.0+ and MPC 0.8.0+.
1786 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1787 their locations. Source code for these libraries can be found at
1788 their respective hosting sites as well as at
1789 https://gcc.gnu.org/pub/gcc/infrastructure/. See also
1790 http://gcc.gnu.org/install/prerequisites.html for additional info. If
1791 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1792 make sure that you have installed both the libraries and the header
1793 files. They may be located in separate packages.])
1795 AC_MSG_ERROR([Building GDB requires GMP 4.2+, and MPFR 3.1.0+.
1796 Try the --with-gmp and/or --with-mpfr options to specify
1797 their locations. If you obtained GMP and/or MPFR from a vendor
1798 distribution package, make sure that you have installed both the libraries
1799 and the header files. They may be located in separate packages.])
1804 # Flags needed for both GMP, MPFR and/or MPC.
1807 AC_SUBST(extra_mpfr_configure_flags)
1808 AC_SUBST(extra_mpc_gmp_configure_flags)
1809 AC_SUBST(extra_mpc_mpfr_configure_flags)
1810 AC_SUBST(extra_isl_gmp_configure_flags)
1812 # Libraries to use for stage1 or when not bootstrapping.
1813 AC_ARG_WITH(stage1-libs,
1814 [AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1815 [if test "$withval" = "no" -o "$withval" = "yes"; then
1818 stage1_libs=$withval
1821 AC_SUBST(stage1_libs)
1823 # Whether or not to use -static-libstdc++ and -static-libgcc. The
1824 # default is yes if gcc is being built; no otherwise. The reason for
1825 # this default is that gdb is sometimes linked against GNU Source
1826 # Highlight, which is a shared library that uses C++ exceptions. In
1827 # this case, -static-libstdc++ will cause crashes.
1828 AC_ARG_WITH(static-standard-libraries,
1829 [AS_HELP_STRING([--with-static-standard-libraries],
1830 [use -static-libstdc++ and -static-libgcc (default=auto)])],
1831 [], [with_static_standard_libraries=auto])
1832 if test "$with_static_standard_libraries" = auto; then
1833 with_static_standard_libraries=$have_compiler
1836 # Linker flags to use for stage1 or when not bootstrapping.
1837 AC_ARG_WITH(stage1-ldflags,
1838 [AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1839 [if test "$withval" = "no" -o "$withval" = "yes"; then
1842 stage1_ldflags=$withval
1845 # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1846 # if supported. But if the user explicitly specified the libraries to use,
1847 # trust that they are doing what they want.
1848 if test "$with_static_standard_libraries" = yes -a "$stage1_libs" = "" \
1849 -a "$have_static_libs" = yes; then
1850 stage1_ldflags="-static-libstdc++ -static-libgcc"
1852 AC_SUBST(stage1_ldflags)
1854 # Libraries to use for stage2 and later builds.
1855 AC_ARG_WITH(boot-libs,
1856 [AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1857 [if test "$withval" = "no" -o "$withval" = "yes"; then
1860 poststage1_libs=$withval
1863 AC_SUBST(poststage1_libs)
1865 # Linker flags to use for stage2 and later builds.
1866 AC_ARG_WITH(boot-ldflags,
1867 [AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1868 [linker flags for stage2 and later])],
1869 [if test "$withval" = "no" -o "$withval" = "yes"; then
1872 poststage1_ldflags=$withval
1874 [poststage1_ldflags=
1875 # In stages 2 and 3, default to linking libstdc++ and libgcc
1876 # statically. But if the user explicitly specified the libraries to
1877 # use, trust that they are doing what they want.
1878 if test "$poststage1_libs" = ""; then
1879 poststage1_ldflags="-static-libstdc++ -static-libgcc"
1882 *-darwin2* | *-darwin1[[56789]]*)
1883 # For these versions, we default to using embedded rpaths.
1884 if test "x$enable_darwin_at_rpath" != "xno"; then
1885 poststage1_ldflags="$poststage1_ldflags -nodefaultrpaths"
1889 # For these versions, we only use embedded rpaths on demand.
1890 if test "x$enable_darwin_at_rpath" = "xyes"; then
1891 poststage1_ldflags="$poststage1_ldflags -nodefaultrpaths"
1895 AC_SUBST(poststage1_ldflags)
1897 # GCC GRAPHITE dependency isl.
1898 # Basic setup is inlined here, actual checks are in config/isl.m4
1903 [Specify prefix directory for the installed isl package.
1904 Equivalent to --with-isl-include=PATH/include
1905 plus --with-isl-lib=PATH/lib])])
1907 # Treat --without-isl as a request to disable
1908 # GRAPHITE support and skip all following checks.
1909 if test "x$with_isl" != "xno"; then
1911 dnl Provide configure switches and initialize islinc & isllibs
1912 dnl with user input.
1914 dnl The versions of isl that work for Graphite
1916 dnl Only execute fail-action, if isl has been requested.
1918 AC_MSG_ERROR([Unable to find a usable isl. See config.log for details.])])
1921 # If the isl check failed, disable builds of in-tree variant of isl
1922 if test "x$with_isl" = xno ||
1923 test "x$gcc_cv_isl" = xno; then
1924 noconfigdirs="$noconfigdirs isl"
1931 # Check for LTO support.
1933 [AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1934 enable_lto=$enableval,
1935 enable_lto=yes; default_enable_lto=yes)
1937 ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1938 build_lto_plugin=yes
1939 ],[if test x"$default_enable_lto" = x"yes" ; then
1941 *-apple-darwin[[912]]* | *-cygwin* | *-mingw* | *djgpp*) ;;
1942 # On other non-ELF platforms, LTO has yet to be validated.
1946 # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1947 # It would also be nice to check the binutils support, but we don't
1948 # have gcc_GAS_CHECK_FEATURE available here. For now, we'll just
1949 # warn during gcc/ subconfigure; unless you're bootstrapping with
1950 # -flto it won't be needed until after installation anyway.
1952 *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
1953 *) if test x"$enable_lto" = x"yes"; then
1954 AC_MSG_ERROR([LTO support is not enabled for this target.])
1959 # Among non-ELF, only Windows platforms support the lto-plugin so far.
1960 # Build it unless LTO was explicitly disabled.
1962 *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1967 AC_ARG_ENABLE(linker-plugin-configure-flags,
1968 [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1969 [additional flags for configuring linker plugins @<:@none@:>@])],
1970 extra_linker_plugin_configure_flags=$enableval,
1971 extra_linker_plugin_configure_flags=)
1972 AC_SUBST(extra_linker_plugin_configure_flags)
1973 AC_ARG_ENABLE(linker-plugin-flags,
1974 [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1975 [additional flags for configuring and building linker plugins @<:@none@:>@])],
1976 extra_linker_plugin_flags=$enableval,
1977 extra_linker_plugin_flags=)
1978 AC_SUBST(extra_linker_plugin_flags)
1980 # Handle --enable-host-pie
1981 # If host PIE executables are the default (or must be forced on) for some host,
1982 # we must pass that configuration to the gcc directory.
1984 AC_ARG_ENABLE(host-pie,
1985 [AS_HELP_STRING([--enable-host-pie],
1986 [build position independent host executables])],
1987 [host_pie=$enableval
1990 if test x$host_pie != xyes ; then
1991 # for Darwin20+ this is required.
1992 AC_MSG_WARN([PIE executables are required for the configured host, host-pie setting ignored.])
1994 gcc_host_pie=--enable-host-pie
2000 # Default to PIE (mandatory for aarch64).
2002 gcc_host_pie=--enable-host-pie
2008 AC_SUBST(gcc_host_pie)
2010 # Enable --enable-host-shared.
2011 # Checked early to determine whether jit is an 'all' language
2012 AC_ARG_ENABLE(host-shared,
2013 [AS_HELP_STRING([--enable-host-shared],
2014 [build host code as shared libraries])],
2015 [host_shared=$enableval
2017 x86_64-*-darwin* | aarch64-*-darwin*)
2018 if test x$host_shared != xyes ; then
2019 # PIC is the default, and actually cannot be switched off.
2020 AC_MSG_WARN([PIC code is required for the configured host; host-shared setting ignored.])
2024 if test x$host_pie = xyes -a x$host_shared != xyes ; then
2025 AC_MSG_WARN([PIC code is required for PIE host executables host-shared setting ignored.])
2031 # 64B x86_64 and Aarch64 Darwin default to PIC.
2032 x86_64-*-darwin* | aarch64-*-darwin*) host_shared=yes ;;
2033 # 32B and powerpc64 Darwin must use PIC to link PIE exes.
2034 *-*-darwin*) host_shared=$host_pie ;;
2038 AC_SUBST(host_shared)
2040 if test x$host_shared = xyes; then
2043 # Since host shared is the default for 64b Darwin, and also enabled for
2044 # host_pie, ensure that we present the PIE flag when host_pie is active.
2045 if test x$host_pie = xyes; then
2053 elif test x$host_pie = xyes; then
2062 # Check for libdiagnostics support.
2063 AC_MSG_CHECKING([whether to enable libdiagnostics])
2064 AC_ARG_ENABLE(libdiagnostics,
2065 [AS_HELP_STRING([--enable-libdiagnostics],
2066 [build libdiagnostics shared library])],
2067 enable_libdiagnostics=$enableval,
2068 enable_libdiagnostics=no)
2070 if test x$enable_libdiagnostics = xyes; then
2071 # Disable libdiagnostics if -enable-host-shared not specified
2072 # but not if building for Mingw. All code in Windows
2073 # is position independent code (PIC).
2077 if test x$host_shared != xyes; then
2079 Enabling libdiagnostics requires --enable-host-shared.
2081 --enable-host-shared typically slows the rest of the compiler down by
2082 a few %, so you must explicitly enable it.
2084 If you want to build both libdiagnostics and the regular compiler, it is often
2085 best to do this via two separate configure/builds, in separate
2086 directories, to avoid imposing the performance cost of
2087 --enable-host-shared on the regular compiler.])
2092 AC_MSG_RESULT($enable_libdiagnostics)
2093 AC_SUBST(enable_libdiagnostics)
2096 # Rust requires -ldl and -lpthread if you are using an old glibc that does not include them by
2097 # default, so we check for them here
2098 # We are doing the test here and not in the gcc/configure to be able to nicely disable the
2099 # build of the Rust frontend in case a dep is missing.
2100 missing_rust_dynlibs=none
2104 AC_SEARCH_LIBS([dlopen], [dl])
2105 AC_SEARCH_LIBS([pthread_create], [pthread])
2109 if test "$ac_cv_search_dlopen" = no; then
2110 missing_rust_dynlibs="libdl"
2113 if test "$ac_cv_search_pthread_create" = no; then
2114 missing_rust_dynlibs="$missing_rust_dynlibs, libpthread"
2117 AC_SUBST(CRAB1_LIBS, "$CRAB1_LIBS")
2119 # If we are building PIC/PIE host executables, and we are building dependent
2120 # libs (e.g. GMP) in-tree those libs need to be configured to generate PIC
2123 if test "$host_shared" = "yes" -o "$host_pie" = "yes"; then
2124 host_libs_picflag='--with-pic'
2126 AC_SUBST(host_libs_picflag)
2128 # By default, C and C++ are the only stage 1 languages.
2129 stage1_languages=,c,
2131 # Target libraries that we bootstrap.
2132 bootstrap_target_libs=,target-libgcc,
2134 # Figure out what language subdirectories are present.
2135 # Look if the user specified --enable-languages="..."; if not, use
2136 # the environment variable $LANGUAGES if defined. $LANGUAGES might
2138 # NB: embedded tabs in this IF block -- do not untabify
2139 if test -d ${srcdir}/gcc; then
2140 if test x"${enable_languages+set}" != xset; then
2141 if test x"${LANGUAGES+set}" = xset; then
2142 enable_languages="${LANGUAGES}"
2143 echo configure.ac: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
2145 enable_languages=default
2148 if test x"${enable_languages}" = x ||
2149 test x"${enable_languages}" = xyes;
2151 echo configure.ac: --enable-languages needs at least one language argument 1>&2
2155 enable_languages=`echo "${enable_languages}" | sed -e 's/[[ ,]][[ ,]]*/,/g' -e 's/,$//'`
2157 # 'f95' is the old name for the 'fortran' language. We issue a warning
2158 # and make the substitution.
2159 case ,${enable_languages}, in
2161 echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
2162 enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
2166 # If bootstrapping, C++ must be enabled.
2167 case ",$enable_languages,:$enable_bootstrap" in
2170 if test -f ${srcdir}/gcc/cp/config-lang.in; then
2171 enable_languages="${enable_languages},c++"
2173 AC_MSG_ERROR([bootstrapping requires c++ sources])
2178 # First scan to see if an enabled language requires some other language.
2179 # We assume that a given config-lang.in will list all the language
2180 # front ends it requires, even if some are required indirectly.
2181 for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
2182 case ${lang_frag} in
2184 # The odd quoting in the next line works around
2185 # an apparent bug in bash 1.12 on linux.
2186 ${srcdir}/gcc/[[*]]/config-lang.in) ;;
2188 # From the config-lang.in, get $language, $lang_requires, and
2189 # $lang_requires_boot_languages.
2192 lang_requires_boot_languages=
2193 # set srcdir during sourcing lang_frag to the gcc dir.
2194 # Sadly overriding srcdir on the . line doesn't work in plain sh as it
2195 # pollutes this shell
2196 saved_srcdir=${srcdir}
2197 srcdir=${srcdir}/gcc . ${lang_frag}
2198 srcdir=${saved_srcdir}
2199 for other in ${lang_requires} ${lang_requires_boot_languages}; do
2200 case ,${enable_languages}, in
2205 echo " \`$other' language required by \`$language'; enabling" 1>&2
2206 enable_languages="${enable_languages},${other}"
2210 for other in ${lang_requires_boot_languages} ; do
2211 if test "$other" != "c"; then
2212 case ,${enable_stage1_languages}, in
2217 case ,${enable_languages}, in
2219 echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
2220 enable_stage1_languages="$enable_stage1_languages,${other}"
2231 new_enable_languages=,c,
2233 # If LTO is enabled, add the LTO front end.
2234 if test "$enable_lto" = "yes" ; then
2235 case ,${enable_languages}, in
2237 *) enable_languages="${enable_languages},lto" ;;
2239 if test "${build_lto_plugin}" = "yes" ; then
2240 configdirs="$configdirs lto-plugin"
2244 # If we're building an offloading compiler, add the LTO front end.
2245 if test x"$enable_as_accelerator_for" != x ; then
2246 case ,${enable_languages}, in
2248 *) enable_languages="${enable_languages},lto" ;;
2252 missing_languages=`echo ",$enable_languages," | sed -e s/,default,/,/ -e s/,all,/,/ -e s/,c,/,/ `
2253 potential_languages=,c,
2255 enabled_target_libs=
2256 disabled_target_libs=
2258 for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
2259 case ${lang_frag} in
2261 # The odd quoting in the next line works around
2262 # an apparent bug in bash 1.12 on linux.
2263 ${srcdir}/gcc/[[*]]/config-lang.in) ;;
2265 # From the config-lang.in, get $language, $target_libs,
2266 # $lang_dirs, $boot_language, and $build_by_default
2272 build_by_default=yes
2273 # set srcdir during sourcing. See above about save & restore
2274 saved_srcdir=${srcdir}
2275 srcdir=${srcdir}/gcc . ${lang_frag}
2276 srcdir=${saved_srcdir}
2277 if test x${language} = x; then
2278 echo "${lang_frag} doesn't set \$language." 1>&2
2282 if test "$language" = "c++"; then
2287 # C is always enabled, so no need to add it again
2288 if test "$language" != "c"; then
2289 case ,${enable_languages}, in
2291 # Language was explicitly selected; include it
2295 # All languages are enabled
2299 # 'default' was selected, select it if it is a default language
2300 add_this_lang=${build_by_default}
2305 # Disable languages that need other directories if these aren't available.
2306 for i in $subdir_requires; do
2307 test -f "$srcdir/gcc/$i/config-lang.in" && continue
2308 case ${add_this_lang} in
2310 # Specifically requested language; tell them.
2311 AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
2314 AC_MSG_WARN([The gcc/$i directory contains parts of $language but is missing])
2315 add_this_lang=unsupported
2319 add_this_lang=unsupported
2324 # Disable Ada if no preexisting GNAT is available.
2325 case ${add_this_lang}:${language}:${have_gnat} in
2327 # Specifically requested language; tell them.
2328 AC_MSG_ERROR([GNAT is required to build $language])
2331 AC_MSG_WARN([GNAT is required to build $language])
2332 add_this_lang=unsupported
2336 add_this_lang=unsupported
2340 # Disable D if no preexisting GDC is available.
2341 case ${add_this_lang}:${language}:${have_gdc} in
2343 # Specifically requested language; tell them.
2344 AC_MSG_ERROR([GDC is required to build $language])
2347 AC_MSG_WARN([GDC is required to build $language])
2348 add_this_lang=unsupported
2352 add_this_lang=unsupported
2356 # Disable Rust if we are missing some required C libraries for the Rust runtime.
2357 case ${add_this_lang}:${language}:${missing_rust_dynlibs} in
2359 # Nothing to do - we're not missing any C libraries
2362 AC_MSG_ERROR([some C libraries are required to build $language: $missing_rust_dynlibs])
2363 add_this_lang=unsupported
2366 AC_MSG_WARN([some C libraries are required to build $language: $missing_rust_dynlibs])
2367 add_this_lang=unsupported
2371 add_this_lang=unsupported
2375 # Disable jit if -enable-host-shared not specified
2376 # but not if building for Mingw. All code in Windows
2377 # is position independent code (PIC).
2381 case ${add_this_lang}:${language}:${host_shared} in
2383 # PR jit/64780: explicitly specify --enable-host-shared
2385 Enabling language "jit" requires --enable-host-shared.
2387 --enable-host-shared typically slows the rest of the compiler down by
2388 a few %, so you must explicitly enable it.
2390 If you want to build both the jit and the regular compiler, it is often
2391 best to do this via two separate configure/builds, in separate
2392 directories, to avoid imposing the performance cost of
2393 --enable-host-shared on the regular compiler.])
2396 AC_MSG_WARN([--enable-host-shared required to build $language])
2397 add_this_lang=unsupported
2401 add_this_lang=unsupported
2407 # Pre-conditions to consider whether cargo being supported.
2408 if test x"$have_cargo" = xyes \
2409 && test x"$build" != x"$host"; then
2410 # Until <https://github.com/Rust-GCC/gccrs/issues/2898>
2411 # "'cargo' should build for the host system" is resolved:
2412 AC_MSG_WARN([use of cargo not yet supported here in Canadian cross configurations])
2415 # Assume that cargo-produced object files are compatible with what
2416 # we're going to build here.
2419 # Disable Rust if cargo is unavailable.
2420 case ${add_this_lang}:${language}:${have_cargo} in
2422 # Specifically requested language; tell them.
2423 AC_MSG_ERROR([cargo is required to build $language])
2426 AC_MSG_WARN([cargo is required to build $language])
2427 add_this_lang=unsupported
2431 add_this_lang=unsupported
2436 # Disable a language that is unsupported by the target.
2437 case "${add_this_lang}: $unsupported_languages " in
2441 AC_MSG_WARN([${language} not supported for this target])
2442 add_this_lang=unsupported
2446 case $add_this_lang in
2448 # Remove language-dependent dirs.
2449 disabled_target_libs="$disabled_target_libs $target_libs"
2450 noconfigdirs="$noconfigdirs $lang_dirs"
2453 # Remove language-dependent dirs; still show language as supported.
2454 disabled_target_libs="$disabled_target_libs $target_libs"
2455 noconfigdirs="$noconfigdirs $lang_dirs"
2456 potential_languages="${potential_languages}${language},"
2459 new_enable_languages="${new_enable_languages}${language},"
2460 potential_languages="${potential_languages}${language},"
2461 missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
2462 enabled_target_libs="$enabled_target_libs $target_libs"
2463 case "${boot_language}:,$enable_stage1_languages," in
2464 yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
2465 # Add to (comma-separated) list of stage 1 languages.
2466 case ",$stage1_languages," in
2467 *,$language,* | ,yes, | ,all,) ;;
2468 *) stage1_languages="${stage1_languages}${language}," ;;
2470 # We need to bootstrap any supporting libraries.
2471 bootstrap_target_libs=`echo "${bootstrap_target_libs}${target_libs}," | sed "s/ /,/g"`
2480 # Add target libraries which are only needed for disabled languages
2482 if test -n "$disabled_target_libs"; then
2483 for dir in $disabled_target_libs; do
2484 case " $enabled_target_libs " in
2486 *) noconfigdirs="$noconfigdirs $dir" ;;
2491 AC_ARG_ENABLE(stage1-languages,
2492 [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
2493 [choose additional languages to build during
2494 stage1. Mostly useful for compiler development])],
2495 [case ,${enable_stage1_languages}, in
2497 # Set it to something that will have no effect in the loop below
2498 enable_stage1_languages=c ;;
2500 enable_stage1_languages=`echo $new_enable_languages | \
2501 sed -e "s/^,//" -e "s/,$//" ` ;;
2503 enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2504 sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2507 # Add "good" languages from enable_stage1_languages to stage1_languages,
2508 # while "bad" languages go in missing_languages. Leave no duplicates.
2509 for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2510 case $potential_languages in
2512 case $stage1_languages in
2514 *) stage1_languages="$stage1_languages$i," ;;
2517 case $missing_languages in
2519 *) missing_languages="$missing_languages$i," ;;
2524 # Remove leading/trailing commas that were added for simplicity
2525 potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2526 missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2527 stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2528 new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2530 if test "x$missing_languages" != x; then
2532 The following requested languages could not be built: ${missing_languages}
2533 Supported languages are: ${potential_languages}])
2535 if test "x$new_enable_languages" != "x$enable_languages"; then
2536 echo The following languages will be built: ${new_enable_languages}
2537 enable_languages="$new_enable_languages"
2540 AC_SUBST(stage1_languages)
2541 ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2544 # Handle --disable-<component> generically.
2545 for dir in $configdirs $build_configdirs $target_configdirs ; do
2546 dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2547 varname=`echo $dirname | sed -e s/+/_/g`
2548 if eval test x\${enable_${varname}} "=" xno ; then
2549 noconfigdirs="$noconfigdirs $dir"
2553 # Check for Boehm's garbage collector
2554 AC_ARG_ENABLE(objc-gc,
2555 [AS_HELP_STRING([--enable-objc-gc],
2556 [enable use of Boehm's garbage collector with the
2557 GNU Objective-C runtime])])
2558 AC_ARG_WITH([target-bdw-gc],
2559 [AS_HELP_STRING([--with-target-bdw-gc=PATHLIST],
2560 [specify prefix directory for installed bdw-gc package.
2561 Equivalent to --with-target-bdw-gc-include=PATH/include
2562 plus --with-target-bdw-gc-lib=PATH/lib])])
2563 AC_ARG_WITH([target-bdw-gc-include],
2564 [AS_HELP_STRING([--with-target-bdw-gc-include=PATHLIST],
2565 [specify directories for installed bdw-gc include files])])
2566 AC_ARG_WITH([target-bdw-gc-lib],
2567 [AS_HELP_STRING([--with-target-bdw-gc-lib=PATHLIST],
2568 [specify directories for installed bdw-gc library])])
2570 case ,${enable_languages},:${enable_objc_gc} in *,objc,*:yes|*,objc,*:auto)
2571 AC_MSG_CHECKING([for bdw garbage collector])
2572 if test "x$with_target_bdw_gc$with_target_bdw_gc_include$with_target_bdw_gc_lib" = x; then
2573 dnl no bdw-gw options, assume default locations
2574 AC_MSG_RESULT([using bdw-gc in default locations])
2576 dnl bdw-gw options, first error checking, complete checking in libobjc
2577 if test "x$with_target_bdw_gc_include" = x && test "x$with_target_bdw_gc_lib" != x; then
2578 AC_MSG_ERROR([found --with-target-bdw-gc-lib but --with-target-bdw-gc-include missing])
2579 elif test "x$with_target_bdw_gc_include" != x && test "x$with_target_bdw_gc_lib" = x; then
2580 AC_MSG_ERROR([found --with-target-bdw-gc-include but --with-target-bdw-gc-lib missing])
2582 AC_MSG_RESULT([using paths configured with --with-target-bdw-gc options])
2587 # Disable libitm, libsanitizer, libvtv if we're not building C++
2588 case ,${enable_languages}, in
2590 # Disable libitm, libsanitizer if we're not building libstdc++
2591 case "${noconfigdirs}" in
2592 *target-libstdc++-v3*)
2593 noconfigdirs="$noconfigdirs target-libitm target-libsanitizer"
2599 noconfigdirs="$noconfigdirs target-libitm target-libsanitizer target-libvtv"
2603 case ,${enable_languages}, in
2605 case " ${noconfigdirs} " in
2606 *\ target-libstdc++-v3\ *)
2607 # Disable target libgrust if we're not building target libstdc++.
2608 noconfigdirs="$noconfigdirs target-libgrust"
2614 # If gcc/ is not in the source tree then we'll not be building a
2615 # target compiler, assume in that case we don't want to build any
2616 # target libraries or tools.
2618 # This was added primarily for the benefit for binutils-gdb who reuse
2619 # this configure script, but don't always have target tools available.
2620 if test ! -d ${srcdir}/gcc; then
2621 skipdirs="${skipdirs} ${target_configdirs}"
2624 # Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2625 # $build_configdirs and $target_configdirs.
2626 # If we have the source for $noconfigdirs entries, add them to $notsupp.
2629 for dir in . $skipdirs $noconfigdirs ; do
2630 dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2631 if test $dir != . && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2632 configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2633 if test -r $srcdir/$dirname/configure ; then
2634 if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2637 notsupp="$notsupp $dir"
2641 if test $dir != . && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2642 build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2643 if test -r $srcdir/$dirname/configure ; then
2644 if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2647 notsupp="$notsupp $dir"
2651 if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2652 target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2653 if test -r $srcdir/$dirname/configure ; then
2654 if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2657 notsupp="$notsupp $dir"
2663 # Quietly strip out all directories which aren't configurable in this tree.
2664 # This relies on all configurable subdirectories being autoconfiscated, which
2666 build_configdirs_all="$build_configdirs"
2668 for i in ${build_configdirs_all} ; do
2669 j=`echo $i | sed -e s/build-//g`
2670 if test -f ${srcdir}/$j/configure ; then
2671 build_configdirs="${build_configdirs} $i"
2675 configdirs_all="$configdirs"
2677 for i in ${configdirs_all} ; do
2678 if test -f ${srcdir}/$i/configure ; then
2679 configdirs="${configdirs} $i"
2683 target_configdirs_all="$target_configdirs"
2685 for i in ${target_configdirs_all} ; do
2686 j=`echo $i | sed -e s/target-//g`
2687 if test -f ${srcdir}/$j/configure ; then
2688 target_configdirs="${target_configdirs} $i"
2692 # libiberty-linker-plugin is special: it doesn't have its own source directory,
2693 # so we have to add it after the preceding checks.
2694 if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2696 case " $configdirs " in
2698 # If we can build libiberty, we can also build libiberty-linker-plugin.
2699 configdirs="$configdirs libiberty-linker-plugin"
2700 extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2701 --with-libiberty=../libiberty-linker-plugin";;
2703 AC_MSG_ERROR([libiberty missing]);;
2707 # Sometimes we have special requirements for the host libiberty.
2708 extra_host_libiberty_configure_flags=
2709 case " $configdirs " in
2710 *" lto-plugin "* | *" libcc1 "* | *" gdbserver "*)
2711 # When these are to be built as shared libraries, the same applies to
2713 extra_host_libiberty_configure_flags=--enable-shared
2716 AC_SUBST(extra_host_libiberty_configure_flags)
2718 # Sometimes we have special requirements for the host zlib.
2719 extra_host_zlib_configure_flags=
2720 case " $configdirs " in
2722 # When bfd is to be built as a shared library, the same applies to
2724 if test "$enable_shared" = "yes"; then
2725 extra_host_zlib_configure_flags=--enable-host-shared
2729 AC_SUBST(extra_host_zlib_configure_flags)
2731 # Produce a warning message for the subdirs we can't configure.
2732 # This isn't especially interesting in the Cygnus tree, but in the individual
2733 # FSF releases, it's important to let people know when their machine isn't
2734 # supported by the one or two programs in a package.
2736 if test -n "${notsupp}" && test -z "${norecursion}" ; then
2737 # If $appdirs is non-empty, at least one of those directories must still
2738 # be configured, or we error out. (E.g., if the gas release supports a
2739 # specified target in some subdirs but not the gas subdir, we shouldn't
2740 # pretend that all is well.)
2741 if test -n "$appdirs" ; then
2742 for dir in $appdirs ; do
2743 if test -r $dir/Makefile.in ; then
2744 if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2748 if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2754 if test -n "$appdirs" ; then
2755 echo "*** This configuration is not supported by this package." 1>&2
2759 # Okay, some application will build, or we don't care to check. Still
2760 # notify of subdirs not getting built.
2761 echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2762 echo " ${notsupp}" 1>&2
2763 echo " (Any other directories should still work fine.)" 1>&2
2771 # To find our prefix, in gcc_cv_tool_prefix.
2776 AC_ARG_WITH([build-sysroot],
2777 [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2778 [use sysroot as the system root during the build])],
2779 [if test x"$withval" != x ; then
2780 SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2782 [SYSROOT_CFLAGS_FOR_TARGET=])
2783 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2785 AC_ARG_WITH([debug-prefix-map],
2786 [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2787 [map A to B, C to D ... in debug information])],
2788 [if test x"$withval" != x; then
2789 DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2790 for debug_map in $withval; do
2791 DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2794 [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2795 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2797 # During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2798 # might be empty or "-g". We don't require a C++ compiler, so CXXFLAGS
2799 # might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2800 # We want to ensure that TARGET libraries (which we know are built with
2801 # gcc) are built with "-O2 -g", so include those options when setting
2802 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2803 if test "x$CFLAGS_FOR_TARGET" = x; then
2804 if test "x${is_cross_compiler}" = xyes; then
2805 CFLAGS_FOR_TARGET="-g -O2"
2807 CFLAGS_FOR_TARGET=$CFLAGS
2810 *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2813 *" -g "* | *" -g3 "*) ;;
2814 *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2818 AC_SUBST(CFLAGS_FOR_TARGET)
2820 if test "x$CXXFLAGS_FOR_TARGET" = x; then
2821 if test "x${is_cross_compiler}" = xyes; then
2822 CXXFLAGS_FOR_TARGET="-g -O2"
2824 CXXFLAGS_FOR_TARGET=$CXXFLAGS
2825 case " $CXXFLAGS " in
2827 *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2829 case " $CXXFLAGS " in
2830 *" -g "* | *" -g3 "*) ;;
2831 *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2835 AC_SUBST(CXXFLAGS_FOR_TARGET)
2837 AC_SUBST(LDFLAGS_FOR_TARGET)
2839 # Handle --with-headers=XXX. If the value is not "yes", the contents of
2840 # the named directory are copied to $(tooldir)/sys-include.
2841 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2842 if test x${is_cross_compiler} = xno ; then
2843 echo 1>&2 '***' --with-headers is only supported when cross compiling
2846 if test x"${with_headers}" != xyes ; then
2847 x=${gcc_cv_tool_prefix}
2848 copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2852 # Handle --with-libs=XXX. If the value is not "yes", the contents of
2853 # the name directories are copied to $(tooldir)/lib. Multiple directories
2855 if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2856 if test x${is_cross_compiler} = xno ; then
2857 echo 1>&2 '***' --with-libs is only supported when cross compiling
2860 if test x"${with_libs}" != xyes ; then
2861 # Copy the libraries in reverse order, so that files in the first named
2862 # library override files in subsequent libraries.
2863 x=${gcc_cv_tool_prefix}
2864 for l in ${with_libs}; do
2865 copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2870 # Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2872 # This is done by determining whether or not the appropriate directory
2873 # is available, and by checking whether or not specific configurations
2874 # have requested that this magic not happen.
2876 # The command line options always override the explicit settings in
2877 # configure.ac, and the settings in configure.ac override this magic.
2879 # If the default for a toolchain is to use GNU as and ld, and you don't
2880 # want to do that, then you should use the --without-gnu-as and
2881 # --without-gnu-ld options for the configure script. Similarly, if
2882 # the default is to use the included zlib and you don't want to do that,
2883 # you should use the --with-system-zlib option for the configure script.
2885 if test x${use_gnu_as} = x &&
2886 echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2888 extra_host_args="$extra_host_args --with-gnu-as"
2891 if test x${use_gnu_ld} = x &&
2892 echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2894 extra_host_args="$extra_host_args --with-gnu-ld"
2897 if test x${use_included_zlib} = x &&
2898 echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2901 with_system_zlib=yes
2902 extra_host_args="$extra_host_args --with-system-zlib"
2905 # If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2906 # can detect this case.
2908 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2910 extra_host_args="$extra_host_args --with-newlib"
2913 # Handle ${copy_dirs}
2914 set fnord ${copy_dirs}
2916 while test $# != 0 ; do
2917 if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2920 echo Copying $1 to $2
2922 # Use the install script to create the directory and all required
2923 # parent directories.
2924 if test -d $2 ; then
2928 ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2931 # Copy the directory, assuming we have tar.
2932 # FIXME: Should we use B in the second tar? Not all systems support it.
2933 (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2935 # It is the responsibility of the user to correctly adjust all
2936 # symlinks. If somebody can figure out how to handle them correctly
2937 # here, feel free to add the code.
2944 # Determine a target-dependent exec_prefix that the installed
2945 # gcc will search in. Keep this list sorted by triplet, with
2946 # the *-*-osname triplets last.
2949 i[[34567]]86-pc-msdosdjgpp*)
2950 md_exec_prefix=/dev/env/DJDIR/bin
2955 md_exec_prefix=/usr/ccs/bin
2959 extra_arflags_for_target=
2960 extra_nmflags_for_target=
2961 extra_ranlibflags_for_target=
2962 target_makefile_frag=/dev/null
2965 target_makefile_frag="config/mt-spu"
2967 loongarch*-*linux* | loongarch*-*gnu*)
2968 target_makefile_frag="config/mt-loongarch-gnu"
2971 target_makefile_frag="config/mt-loongarch-elf"
2973 mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2974 target_makefile_frag="config/mt-sde"
2976 mipsisa*-*-elfoabi*)
2977 target_makefile_frag="config/mt-mips-elfoabi"
2979 mips*-*-*linux* | mips*-*-gnu*)
2980 target_makefile_frag="config/mt-mips-gnu"
2983 target_makefile_frag="config/mt-android"
2985 *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2986 target_makefile_frag="config/mt-gnu"
2988 *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2989 # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2990 # commands to handle both 32-bit and 64-bit objects. These flags are
2991 # harmless if we're using GNU nm or ar.
2992 extra_arflags_for_target=" -X32_64"
2993 extra_nmflags_for_target=" -B -X32_64"
2997 alphaieee_frag=/dev/null
3000 # This just makes sure to use the -mieee option to build target libs.
3001 # This should probably be set individually by each library.
3002 alphaieee_frag="config/mt-alphaieee"
3006 # If --enable-target-optspace always use -Os instead of -O2 to build
3007 # the target libraries, similarly if it is not specified, use -Os
3008 # on selected platforms.
3009 ospace_frag=/dev/null
3010 case "${enable_target_optspace}:${target}" in
3012 ospace_frag="config/mt-ospace"
3015 ospace_frag="config/mt-d30v"
3017 :m32r-* | :d10v-* | :fr30-* | :i?86*-*-elfiamcu)
3018 ospace_frag="config/mt-ospace"
3023 echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
3027 # Some systems (e.g., one of the i386-aix systems the gas testers are
3028 # using) don't handle "\$" correctly, so don't use it here.
3029 tooldir='${exec_prefix}'/${target_noncanonical}
3030 build_tooldir=${tooldir}
3032 # Create a .gdbinit file which runs the one in srcdir
3033 # and tells GDB to look there for source files.
3035 if test -r ${srcdir}/.gdbinit ; then
3038 *) cat > ./.gdbinit <<EOF
3042 source ${srcdir}/.gdbinit
3048 # Make sure that the compiler is able to generate an executable. If it
3049 # can't, we are probably in trouble. We don't care whether we can run the
3050 # executable--we might be using a cross compiler--we only care whether it
3051 # can be created. At this point the main configure script has set CC.
3053 echo "int main () { return 0; }" > conftest.c
3054 ${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3055 if test $? = 0 ; then
3056 if test -s conftest || test -s conftest.exe ; then
3062 echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
3063 echo 1>&2 "*** You must set the environment variable CC to a working compiler."
3070 # Decide which environment variable is used to find dynamic libraries.
3072 *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
3073 *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
3074 *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
3075 *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
3078 # On systems where the dynamic library environment variable is PATH,
3079 # gcc/ will put dynamic libraries into a subdirectory to avoid adding
3080 # built executables to PATH.
3081 if test "$RPATH_ENVVAR" = PATH; then
3082 GCC_SHLIB_SUBDIR=/shlib
3087 # Adjust the toplevel makefile according to whether bootstrap was selected.
3088 case $enable_bootstrap in
3090 bootstrap_suffix=bootstrap
3091 BUILD_CONFIG=bootstrap-debug
3094 bootstrap_suffix=no-bootstrap
3099 AC_MSG_CHECKING(for default BUILD_CONFIG)
3101 AC_ARG_WITH([build-config],
3102 [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
3103 [use config/NAME.mk build configuration])],
3104 [case $with_build_config in
3105 yes) with_build_config= ;;
3106 no) with_build_config= BUILD_CONFIG= ;;
3109 if test "x${with_build_config}" != x; then
3110 BUILD_CONFIG=$with_build_config
3112 case $BUILD_CONFIG in
3114 if echo "int f (void) { return 0; }" > conftest.c &&
3115 ${CC} -c conftest.c &&
3116 mv conftest.o conftest.o.g0 &&
3117 ${CC} -c -g conftest.c &&
3118 mv conftest.o conftest.o.g &&
3119 ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
3124 rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
3128 AC_MSG_RESULT($BUILD_CONFIG)
3129 AC_SUBST(BUILD_CONFIG)
3131 # Use same top-level configure hooks in libgcc/libstdc++/libvtv.
3132 AC_MSG_CHECKING([for --enable-vtable-verify])
3133 AC_ARG_ENABLE(vtable-verify,
3134 [AS_HELP_STRING([--enable-vtable-verify],
3135 [Enable vtable verification feature])],
3136 [case "$enableval" in
3137 yes) enable_vtable_verify=yes ;;
3138 no) enable_vtable_verify=no ;;
3139 *) enable_vtable_verify=no;;
3141 [enable_vtable_verify=no])
3142 AC_MSG_RESULT($enable_vtable_verify)
3144 # Record target_configdirs and the configure arguments for target and
3145 # build configuration in Makefile.
3146 target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
3147 build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
3148 bootstrap_fixincludes=no
3150 # If we are building libgomp, bootstrap it.
3151 if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
3152 bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
3155 # If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
3156 # or bootstrap-ubsan, bootstrap it.
3157 if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
3158 case "$BUILD_CONFIG" in
3159 *bootstrap-hwasan* | *bootstrap-asan* | *bootstrap-ubsan* )
3160 bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
3161 bootstrap_fixincludes=yes
3166 # If we are building libvtv and --enable-vtable-verify, bootstrap it.
3167 if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
3168 test "$enable_vtable_verify" != no; then
3169 bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
3172 # If we are building libatomic and the list of enabled languages includes the
3173 # D frontend, bootstrap it.
3174 if echo " ${target_configdirs} " | grep " libatomic " > /dev/null 2>&1; then
3175 case ,${enable_languages}, in
3177 bootstrap_target_libs=${bootstrap_target_libs}target-libatomic,
3182 # Determine whether gdb needs tk/tcl or not.
3183 # Use 'maybe' since enable_gdbtk might be true even if tk isn't available
3184 # and in that case we want gdb to be built without tk. Ugh!
3185 # In fact I believe gdb is the *only* package directly dependent on tk,
3186 # so we should be able to put the 'maybe's in unconditionally and
3187 # leave out the maybe dependencies when enable_gdbtk is false. I'm not
3188 # 100% sure that that's safe though.
3190 gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
3191 case "$enable_gdbtk" in
3195 GDB_TK="${gdb_tk}" ;;
3197 # Only add the dependency on gdbtk when GDBtk is part of the gdb
3198 # distro. Eventually someone will fix this and move Insight, nee
3199 # gdbtk to a separate directory.
3200 if test -d ${srcdir}/gdb/gdbtk ; then
3207 CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
3208 INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
3210 # gdb and gdbserver depend on gnulib and gdbsupport, but as nothing
3211 # else does, only include them if one of these is built. The Makefile
3212 # provides the ordering, so it's enough here to add to the list.
3213 case " ${configdirs} " in
3215 configdirs="${configdirs} gnulib gdbsupport"
3218 configdirs="${configdirs} gnulib gdbsupport"
3221 configdirs="${configdirs} gnulib"
3225 # Strip out unwanted targets.
3227 # While at that, we remove Makefiles if we were started for recursive
3228 # configuration, so that the top-level Makefile reconfigures them,
3229 # like we used to do when configure itself was recursive.
3231 # Loop over modules. We used to use the "$extrasub" feature from Autoconf
3232 # but now we're fixing up the Makefile ourselves with the additional
3233 # commands passed to AC_CONFIG_FILES. Use separate variables
3234 # extrasub-{build,host,target} not because there is any reason to split
3235 # the substitutions up that way, but only to remain below the limit of
3236 # 99 commands in a script, for HP-UX sed.
3238 # Do not nest @if/@endif or @unless/@endunless pairs, because
3239 # configure will not warn you at all.
3241 case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
3242 yes:yes:*\ gold\ *:*,c++,*) ;;
3243 yes:yes:*\ gold\ *:*)
3244 AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
3248 # Bootstrapping GCC requires libstdc++-v3 so error out if libstdc++ is disabled with bootstrapping
3249 # Note C++ is always enabled for stage1 now.
3250 case "$enable_bootstrap:${noconfigdirs}" in
3251 yes:*target-libstdc++-v3*)
3252 AC_MSG_ERROR([bootstrapping with --disable-libstdcxx is not supported])
3258 for module in ${build_configdirs} ; do
3259 if test -z "${no_recursion}" \
3260 && test -f ${build_subdir}/${module}/Makefile; then
3261 echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
3262 rm -f ${build_subdir}/${module}/Makefile
3264 extrasub_build="$extrasub_build
3265 /^@if build-$module\$/d
3266 /^@endif build-$module\$/d
3267 /^@unless build-$module\$/,/^@endunless build-$module\$/d
3268 /^@if build-$module-$bootstrap_suffix\$/d
3269 /^@endif build-$module-$bootstrap_suffix\$/d
3270 /^@unless build-$module-$bootstrap_suffix\$/,/^@endunless build-$module-$bootstrap_suffix\$/d"
3273 for module in ${configdirs} ; do
3274 if test -z "${no_recursion}"; then
3275 for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
3276 if test -f ${file}; then
3277 echo 1>&2 "*** removing ${file} to force reconfigure"
3282 case ${module},${bootstrap_fixincludes} in
3283 fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
3284 *) host_bootstrap_suffix=$bootstrap_suffix ;;
3286 extrasub_host="$extrasub_host
3288 /^@endif $module\$/d
3289 /^@unless $module\$/,/^@endunless $module\$/d
3290 /^@if $module-$host_bootstrap_suffix\$/d
3291 /^@endif $module-$host_bootstrap_suffix\$/d
3292 /^@unless $module-$host_bootstrap_suffix\$/,/^@endunless $module-$host_bootstrap_suffix\$/d"
3295 for module in ${target_configdirs} ; do
3296 if test -z "${no_recursion}" \
3297 && test -f ${target_subdir}/${module}/Makefile; then
3298 echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
3299 rm -f ${target_subdir}/${module}/Makefile
3302 # We only bootstrap target libraries listed in bootstrap_target_libs.
3303 case $bootstrap_target_libs in
3304 *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
3305 *) target_bootstrap_suffix=no-bootstrap ;;
3308 extrasub_target="$extrasub_target
3309 /^@if target-$module\$/d
3310 /^@endif target-$module\$/d
3311 /^@unless target-$module\$/,/^@endunless target-$module\$/d
3312 /^@if target-$module-$target_bootstrap_suffix\$/d
3313 /^@endif target-$module-$target_bootstrap_suffix\$/d
3314 /^@unless target-$module-$target_bootstrap_suffix\$/,/^@endunless target-$module-$target_bootstrap_suffix\$/d"
3317 # Do the final fixup along with target modules.
3318 extrasub_target="$extrasub_target
3323 if test "$enable_pgo_build" != "no"; then
3324 extrasub_build="$extrasub_build
3326 /^@endif pgo-build\$/d"
3329 # Create the serialization dependencies. This uses a temporary file.
3331 AC_ARG_ENABLE([serial-configure],
3332 [AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
3333 [force sequential configuration of
3334 sub-packages for the host, target or build
3335 machine, or all sub-packages])])
3337 case ${enable_serial_configure} in
3339 enable_serial_build_configure=yes
3340 enable_serial_host_configure=yes
3341 enable_serial_target_configure=yes
3345 # These force 'configure's to be done one at a time, to avoid problems
3346 # with contention over a shared config.cache.
3348 if test "x${enable_serial_build_configure}" = xyes || test "x${enable_serial_host_configure}" = xyes || test "x${enable_serial_target_configure}" = xyes; then
3349 echo '# serdep.tmp' > serdep.tmp
3352 test "x${enable_serial_build_configure}" = xyes &&
3353 for item in ${build_configdirs} ; do
3356 *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
3361 test "x${enable_serial_host_configure}" = xyes &&
3362 for item in ${configdirs} ; do
3365 *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
3370 test "x${enable_serial_target_configure}" = xyes &&
3371 for item in ${target_configdirs} ; do
3374 *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
3378 serialization_dependencies=serdep.tmp
3379 AC_SUBST_FILE(serialization_dependencies)
3381 # Base args. Strip norecursion, cache-file, srcdir, host, build,
3382 # target, nonopt, and variable assignments. These are the ones we
3383 # might not want to pass down to subconfigures. The exception being
3384 # --cache-file=/dev/null, which is used to turn off the use of cache
3385 # files altogether, and which should be passed on to subconfigures.
3386 # Also strip program-prefix, program-suffix, and program-transform-name,
3387 # so that we can pass down a consistent program-transform-name.
3393 eval "set -- $ac_configure_args"
3396 if test X"$skip_next" = X"yes"; then
3400 if test X"$keep_next" = X"yes"; then
3403 ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
3405 hbaseargs="$hbaseargs '$ac_arg'"
3406 bbaseargs="$bbaseargs '$ac_arg'"
3407 tbaseargs="$tbaseargs '$ac_arg'"
3412 # Handle separated arguments. Based on the logic generated by
3415 *=* | --config-cache | -C | -disable-* | --disable-* \
3416 | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
3417 | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
3418 | -with-* | --with-* | -without-* | --without-* | --x)
3433 --with-* | --without-*)
3434 libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
3438 lib=`echo "$libopt" | sed 's,[-_]include$,,'`
3441 lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
3444 lib=`echo "$libopt" | sed 's,[-_]prefix$,,'`
3447 lib=`echo "$libopt" | sed 's,[-_]type$,,'`
3456 mpc | mpfr | gmp | isl)
3457 # If we're processing --with-$lib, --with-$lib-include or
3458 # --with-$lib-lib, for one of the libs above, and target is
3459 # different from host, don't pass the current argument to any
3460 # target library's configure.
3461 if test x$is_cross_compiler = xyes; then
3466 # We don't want libintl (and co.) in anything but the host arguments.
3475 --cache-file=/dev/null | \
3476 -cache-file=/dev/null )
3477 # Handled here to avoid the test to skip args below.
3478 hbaseargs="$hbaseargs '$ac_arg'"
3479 bbaseargs="$bbaseargs '$ac_arg'"
3480 tbaseargs="$tbaseargs '$ac_arg'"
3481 # Assert: $separate_arg should always be no.
3482 keep_next=$separate_arg
3498 -program-prefix* | \
3499 -program-suffix* | \
3500 -program-transform-name* )
3501 skip_next=$separate_arg
3505 # An option. Add it.
3508 ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
3510 hbaseargs="$hbaseargs '$ac_arg'"
3511 if test X"$skip_barg" = Xno; then
3512 bbaseargs="$bbaseargs '$ac_arg'"
3514 if test X"$skip_targ" = Xno; then
3515 tbaseargs="$tbaseargs '$ac_arg'"
3517 keep_next=$separate_arg
3520 # Either a variable assignment, or a nonopt (triplet). Don't
3521 # pass it down; let the Makefile handle this.
3526 # Remove the initial space we just introduced and, as these will be
3527 # expanded by make, quote '$'.
3528 hbaseargs=`echo "x$hbaseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
3529 bbaseargs=`echo "x$bbaseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
3531 # Add in --program-transform-name, after --program-prefix and
3532 # --program-suffix have been applied to it. Autoconf has already
3533 # doubled dollar signs and backslashes in program_transform_name; we want
3534 # the backslashes un-doubled, and then the entire thing wrapped in single
3535 # quotes, because this will be expanded first by make and then by the shell.
3536 # Also, because we want to override the logic in subdir configure scripts to
3537 # choose program_transform_name, replace any s,x,x, with s,y,y,.
3538 sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
3539 ${program_transform_name}
3541 gcc_transform_name=`cat conftestsed.out`
3542 rm -f conftestsed.out
3543 hbaseargs="$hbaseargs --program-transform-name='${gcc_transform_name}'"
3544 bbaseargs="$bbaseargs --program-transform-name='${gcc_transform_name}'"
3545 tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
3546 if test "$silent" = yes; then
3547 bbaseargs="$bbaseargs --silent"
3548 hbaseargs="$hbaseargs --silent"
3549 tbaseargs="$tbaseargs --silent"
3552 bbaseargs="$bbaseargs --disable-option-checking"
3553 hbaseargs="$hbaseargs --disable-option-checking"
3554 tbaseargs="$tbaseargs --disable-option-checking"
3556 if test "$enable_year2038" = no; then
3557 bbaseargs="$bbaseargs --disable-year2038"
3558 hbaseargs="$hbaseargs --disable-year2038"
3559 tbaseargs="$tbaseargs --disable-year2038"
3562 # Record and document user additions to sub configure arguments.
3563 AC_ARG_VAR([build_configargs],
3564 [additional configure arguments for build directories])
3565 AC_ARG_VAR([host_configargs],
3566 [additional configure arguments for host directories])
3567 AC_ARG_VAR([target_configargs],
3568 [additional configure arguments for target directories])
3570 # For the build-side libraries, we just need to pretend we're native,
3571 # and not use the same cache file. Multilibs are neither needed nor
3572 # desired. We can't even use the same cache file for all build-side
3573 # libraries, as they're compiled differently; some with C, some with
3574 # C++ or with different feature-enabling options.
3575 build_configargs="$build_configargs --cache-file=./config.cache ${bbaseargs}"
3577 # For host modules, accept cache file option, or specification as blank.
3578 case "${cache_file}" in
3580 cache_file_option="" ;;
3581 /* | [[A-Za-z]]:[[\\/]]* ) # absolute path
3582 cache_file_option="--cache-file=${cache_file}" ;;
3584 cache_file_option="--cache-file=../${cache_file}" ;;
3587 # Host dirs don't like to share a cache file either, horribly enough.
3588 # This seems to be due to autoconf 2.5x stupidity.
3589 host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${hbaseargs}"
3591 target_configargs="$target_configargs ${tbaseargs}"
3593 # Passing a --with-cross-host argument lets the target libraries know
3594 # whether they are being built with a cross-compiler or being built
3595 # native. However, it would be better to use other mechanisms to make the
3596 # sorts of decisions they want to make on this basis. Please consider
3597 # this option to be deprecated. FIXME.
3598 if test x${is_cross_compiler} = xyes ; then
3599 target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3602 # Special user-friendly check for native x86_64-linux build, if
3603 # multilib is not explicitly enabled.
3604 case "$target:$have_compiler:$host:$target:$enable_multilib" in
3605 x86_64-*linux*:yes:$build:$build:)
3606 # Make sure we have a development environment that handles 32-bit
3608 echo "int main () { return 0; }" > conftest.c
3609 ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3610 if test $? = 0 ; then
3611 if test -s conftest || test -s conftest.exe ; then
3616 if test x${dev64} != xyes ; then
3617 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.])
3622 # Default to --enable-multilib.
3623 if test x${enable_multilib} = x ; then
3624 target_configargs="--enable-multilib ${target_configargs}"
3627 # Pass --with-newlib if appropriate. Note that target_configdirs has
3628 # changed from the earlier setting of with_newlib.
3629 if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3630 target_configargs="--with-newlib ${target_configargs}"
3633 # Different target subdirs use different values of certain variables
3634 # (notably CXX). Worse, multilibs use *lots* of different values.
3635 # Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3636 # it doesn't automatically accept command-line overrides of them.
3637 # This means it's not safe for target subdirs to share a cache file,
3638 # which is disgusting, but there you have it. Hopefully this can be
3639 # fixed in future. It's still worthwhile to use a cache file for each
3640 # directory. I think.
3642 # Pass the appropriate --build, --host, --target and --cache-file arguments.
3643 # We need to pass --target, as newer autoconf's requires consistency
3644 # for target_alias and gcc doesn't manage it consistently.
3645 target_configargs="--cache-file=./config.cache ${target_configargs}"
3648 case " $target_configdirs " in
3650 case " $target_configargs " in
3651 *" --with-newlib "*)
3654 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3658 # If we're not building GCC, don't discard standard headers.
3659 if test -d ${srcdir}/gcc; then
3660 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3662 if test "${build}" != "${host}"; then
3663 # On Canadian crosses, CC_FOR_TARGET will have already been set
3664 # by `configure', so we won't have an opportunity to add -Bgcc/
3665 # to it. This is right: we don't want to search that directory
3666 # for binaries, but we want the header files in there, so add
3668 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3670 # Someone might think of using the pre-installed headers on
3671 # Canadian crosses, in case the installed compiler is not fully
3672 # compatible with the compiler being built. In this case, it
3673 # would be better to flag an error than risking having
3674 # incompatible object files being constructed. We can't
3675 # guarantee that an error will be flagged, but let's hope the
3676 # compiler will do it, when presented with incompatible header
3681 case "${target}-${is_cross_compiler}" in
3682 i[[3456789]]86-*-linux*-no)
3683 # Here host == target, so we don't need to build gcc,
3684 # so we don't want to discard standard headers.
3685 FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3688 # If we're building newlib, use its generic headers last, but search
3689 # for any libc-related directories first (so make it the last -B
3691 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3693 # If we're building libgloss, find the startup file, simulator library
3694 # and linker script.
3695 case " $target_configdirs " in
3697 # Look for startup file, simulator library and maybe linker script.
3698 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3699 # Look for libnosys.a in case the target needs it.
3700 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3701 # Most targets have the linker script in the source directory.
3702 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3713 x86_64-*mingw* | *-w64-mingw*)
3714 # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3715 # however, use a symlink named 'mingw' in ${prefix} .
3716 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3719 # MinGW can't be handled as Cygwin above since it does not use newlib.
3720 FLAGS_FOR_TARGET=$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'
3724 # Allow the user to override the flags for
3725 # our build compiler if desired.
3726 if test x"${build}" = x"${host}" ; then
3727 CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3728 CPPFLAGS_FOR_BUILD=${CPPFLAGS_FOR_BUILD-${CPPFLAGS}}
3729 CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3730 LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3733 # On Canadian crosses, we'll be searching the right directories for
3734 # the previously-installed cross compiler, so don't bother to add
3735 # flags for directories within the install tree of the compiler
3736 # being built; programs in there won't even run.
3737 if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3738 # Search for pre-installed headers if nothing else fits.
3739 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3742 if test "x${use_gnu_ld}" = x &&
3743 echo " ${configdirs} " | grep " ld " > /dev/null ; then
3744 # Arrange for us to find uninstalled linker scripts.
3745 FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3748 # Search for other target-specific linker scripts and such.
3751 FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3753 # The VxWorks support for shared libraries is getting in
3754 # incrementally. Make sure it doesn't get activated implicitly:
3756 if test "${enable_shared-unset}" = unset ; then
3758 # So the build of libraries knows ...
3759 target_configargs="${target_configargs} --disable-shared"
3761 host_configargs="${host_configargs} --disable-shared"
3766 # Makefile fragments.
3767 for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3769 eval fragval=\$$frag
3770 if test $fragval != /dev/null; then
3771 eval $frag=${srcdir}/$fragval
3774 AC_SUBST_FILE(host_makefile_frag)
3775 AC_SUBST_FILE(target_makefile_frag)
3776 AC_SUBST_FILE(alphaieee_frag)
3777 AC_SUBST_FILE(ospace_frag)
3779 # Miscellanea: directories, flags, etc.
3780 AC_SUBST(RPATH_ENVVAR)
3781 AC_SUBST(GCC_SHLIB_SUBDIR)
3783 AC_SUBST(build_tooldir)
3784 AC_SUBST(CONFIGURE_GDB_TK)
3786 AC_SUBST(INSTALL_GDB_TK)
3788 # Build module lists & subconfigure args.
3789 AC_SUBST(build_configargs)
3790 AC_SUBST(build_configdirs)
3792 # Host module lists & subconfigure args.
3793 AC_SUBST(host_configargs)
3794 AC_SUBST(configdirs)
3795 AC_SUBST(target_configdirs)
3797 # Target module lists & subconfigure args.
3798 AC_SUBST(target_configargs)
3802 AC_SUBST(AR_FOR_BUILD)
3803 AC_SUBST(AS_FOR_BUILD)
3804 AC_SUBST(CC_FOR_BUILD)
3805 AC_SUBST(CFLAGS_FOR_BUILD)
3806 AC_SUBST(CPP_FOR_BUILD)
3807 AC_SUBST(CPPFLAGS_FOR_BUILD)
3808 AC_SUBST(CXXFLAGS_FOR_BUILD)
3809 AC_SUBST(CXX_FOR_BUILD)
3810 AC_SUBST(DLLTOOL_FOR_BUILD)
3811 AC_SUBST(DSYMUTIL_FOR_BUILD)
3812 AC_SUBST(GFORTRAN_FOR_BUILD)
3813 AC_SUBST(GOC_FOR_BUILD)
3814 AC_SUBST(GDC_FOR_BUILD)
3815 AC_SUBST(LDFLAGS_FOR_BUILD)
3816 AC_SUBST(LD_FOR_BUILD)
3817 AC_SUBST(NM_FOR_BUILD)
3818 AC_SUBST(RANLIB_FOR_BUILD)
3819 AC_SUBST(WINDMC_FOR_BUILD)
3820 AC_SUBST(WINDRES_FOR_BUILD)
3822 # Generate default definitions for YACC, M4, LEX and other programs that run
3823 # on the build machine. These are used if the Makefile can't locate these
3824 # programs in objdir.
3825 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3827 AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3828 case " $build_configdirs " in
3829 *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3832 AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3833 case " $build_configdirs " in
3834 *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3837 AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3838 case " $build_configdirs " in
3839 *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3842 AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3843 case " $build_configdirs " in
3844 *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3845 *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3848 AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3849 case " $build_configdirs " in
3850 *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3853 AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3854 case " $build_configdirs " in
3855 *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3858 # For an installed makeinfo, we require it to be from texinfo 4.7 or
3859 # higher, else we use the "missing" dummy.
3860 if ${MAKEINFO} --version \
3861 | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3864 MAKEINFO="$MISSING makeinfo"
3870 # FIXME: expect and dejagnu may become build tools?
3872 AC_CHECK_PROGS(EXPECT, expect, expect)
3873 case " $configdirs " in
3875 test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3879 AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3880 case " $configdirs " in
3882 test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3888 NCN_STRICT_CHECK_TOOLS(AR, ar)
3889 NCN_STRICT_CHECK_TOOLS(AS, as)
3890 NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3891 NCN_STRICT_CHECK_TOOLS(DSYMUTIL, dsymutil)
3892 NCN_STRICT_CHECK_TOOLS(LD, ld)
3893 NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3894 NCN_STRICT_CHECK_TOOLS(NM, nm)
3895 NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3896 NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3897 NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3898 NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3899 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3900 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3901 NCN_STRICT_CHECK_TOOLS(OTOOL, otool)
3902 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3909 GDCFLAGS=${GDCFLAGS-${CFLAGS}}
3910 AC_SUBST(PKG_CONFIG_PATH)
3912 GCC_PLUGIN_OPTION(PLUGIN_OPTION)
3914 RANLIB_PLUGIN_OPTION=
3915 if test -n "$PLUGIN_OPTION"; then
3916 if $AR --help 2>&1 | grep -q "\--plugin"; then
3917 AR_PLUGIN_OPTION="$PLUGIN_OPTION"
3919 if $RANLIB --help 2>&1 | grep -q "\--plugin"; then
3920 RANLIB_PLUGIN_OPTION="$PLUGIN_OPTION"
3923 AC_SUBST(AR_PLUGIN_OPTION)
3924 AC_SUBST(RANLIB_PLUGIN_OPTION)
3927 AC_ARG_WITH([build-time-tools],
3928 [AS_HELP_STRING([--with-build-time-tools=PATH],
3929 [use given path to find target tools during the build])],
3930 [case x"$withval" in
3933 with_build_time_tools=
3934 AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3937 [with_build_time_tools=])
3939 NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3940 NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3941 NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3942 NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3943 NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3944 NCN_STRICT_CHECK_TARGET_TOOLS(GDC_FOR_TARGET, gdc)
3945 NCN_STRICT_CHECK_TARGET_TOOLS(GM2_FOR_TARGET, gm2)
3947 ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3948 ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3949 ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3950 ACX_CHECK_INSTALLED_TARGET_TOOL(DSYMUTIL_FOR_TARGET, dsymutil)
3951 ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3952 ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3953 ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3954 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3955 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3956 ACX_CHECK_INSTALLED_TARGET_TOOL(OTOOL_FOR_TARGET, otool)
3957 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3958 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3959 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3960 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3961 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3963 RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3965 GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3966 GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3967 GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3968 dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3969 GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3970 [gcc/xg++ -B$$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$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3972 GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3973 [gcc/xgcc -shared-libgcc -B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs],
3975 GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3976 GCC_TARGET_TOOL(dsymutil, DSYMUTIL_FOR_TARGET, DSYMUTIL)
3977 GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3978 GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3979 [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3980 GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3981 [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3982 GCC_TARGET_TOOL(gdc, GDC_FOR_TARGET, GDC,
3983 [gcc/gdc -B$$r/$(HOST_SUBDIR)/gcc/], d)
3984 GCC_TARGET_TOOL(gm2, GM2_FOR_TARGET, GM2,
3985 [gcc/gm2 -B$$r/$(HOST_SUBDIR)/gcc/], m2)
3986 GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3987 GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3988 GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3989 GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3990 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3991 GCC_TARGET_TOOL(otool, OTOOL_FOR_TARGET, OTOOL)
3992 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3993 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3994 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3995 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3996 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3998 AC_SUBST(FLAGS_FOR_TARGET)
3999 AC_SUBST(RAW_CXX_FOR_TARGET)
4001 # Certain tools may need extra flags.
4002 AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
4003 RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
4004 NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
4006 # When building target libraries, except in a Canadian cross, we use
4007 # the same toolchain as the compiler we just built.
4008 COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
4009 COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
4010 COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
4011 if test $host = $build; then
4012 case " $configdirs " in
4014 COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
4015 COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
4016 COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
4021 AC_SUBST(COMPILER_AS_FOR_TARGET)
4022 AC_SUBST(COMPILER_LD_FOR_TARGET)
4023 AC_SUBST(COMPILER_NM_FOR_TARGET)
4025 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
4026 AC_ARG_ENABLE(maintainer-mode,
4027 [AS_HELP_STRING([--enable-maintainer-mode],
4028 [enable make rules and dependencies not useful
4029 (and sometimes confusing) to the casual installer])],
4030 USE_MAINTAINER_MODE=$enableval,
4031 USE_MAINTAINER_MODE=no)
4032 AC_MSG_RESULT($USE_MAINTAINER_MODE)
4033 AC_SUBST(MAINTAINER_MODE_TRUE)
4034 AC_SUBST(MAINTAINER_MODE_FALSE)
4035 if test "$USE_MAINTAINER_MODE" = yes; then
4036 MAINTAINER_MODE_TRUE=
4037 MAINTAINER_MODE_FALSE='#'
4039 MAINTAINER_MODE_TRUE='#'
4040 MAINTAINER_MODE_FALSE=
4042 MAINT=$MAINTAINER_MODE_TRUE
4045 # ---------------------
4046 # GCC bootstrap support
4047 # ---------------------
4049 # Stage specific cflags for build.
4054 yes) stage1_cflags="-g -Wa,-J" ;;
4055 *) stage1_cflags="-g -J" ;;
4059 AC_SUBST(stage1_cflags)
4061 # Enable --enable-checking in stage1 of the compiler.
4062 AC_ARG_ENABLE(stage1-checking,
4063 [AS_HELP_STRING([[--enable-stage1-checking[=all]]],
4064 [choose additional checking for stage1 of the compiler])],
4065 [stage1_checking=--enable-checking=${enable_stage1_checking}],
4066 [if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
4067 # For --disable-checking or implicit --enable-checking=release, avoid
4068 # setting --enable-checking=gc in the default stage1 checking for LTO
4069 # bootstraps. See PR62077.
4070 case $BUILD_CONFIG in
4072 stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types;;
4074 stage1_checking=--enable-checking=yes,types;;
4076 if test "x$enable_checking" = x && \
4077 test -d ${srcdir}/gcc && \
4078 test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
4079 stage1_checking=--enable-checking=yes,types,extra
4082 stage1_checking=--enable-checking=$enable_checking,types
4084 AC_SUBST(stage1_checking)
4086 # Enable -Werror in bootstrap stage2 and later.
4087 AC_ARG_ENABLE(werror,
4088 [AS_HELP_STRING([--enable-werror],
4089 [enable -Werror in bootstrap stage2 and later])],
4091 case ${enable_werror} in
4092 yes) stage2_werror_flag="--enable-werror-always" ;;
4093 *) stage2_werror_flag="" ;;
4097 if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
4098 case $BUILD_CONFIG in
4100 stage2_werror_flag="--enable-werror-always" ;;
4102 stage2_werror_flag="--enable-werror-always" ;;
4107 AC_SUBST(stage2_werror_flag)
4109 # Specify what files to not compare during bootstrap.
4111 compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
4112 compare_exclusions="$compare_exclusions | gcc/m2/gm2-compiler-boot/M2Version*"
4113 compare_exclusions="$compare_exclusions | gcc/m2/gm2-compiler-boot/SYSTEM*"
4114 compare_exclusions="$compare_exclusions | gcc/m2/gm2version*"
4116 hppa*64*-*-hpux*) ;;
4117 powerpc*-ibm-aix*) compare_exclusions="$compare_exclusions | *libgomp*\$(objext)" ;;
4119 AC_SUBST(compare_exclusions)
4121 AC_CONFIG_FILES([Makefile],
4122 [sed "$extrasub_build" Makefile |
4123 sed "$extrasub_host" |
4124 sed "$extrasub_target" > mf$$
4125 mv -f mf$$ Makefile],
4126 [extrasub_build="$extrasub_build"
4127 extrasub_host="$extrasub_host"
4128 extrasub_target="$extrasub_target"])