source: trunk/libs/newlib/src/configure.ac @ 672

Last change on this file since 672 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc

File size: 110.8 KB
Line 
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 Free Software Foundation, Inc.
4#
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.
9#
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.
14#
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/>.
18
19##############################################################################
20### WARNING: this file contains embedded tabs.  Do not run untabify on this file.
21
22m4_include(config/acx.m4)
23m4_include(config/override.m4)
24m4_include(config/proginstall.m4)
25m4_include(config/elf.m4)
26m4_include([libtool.m4])
27m4_include([ltoptions.m4])
28m4_include([ltsugar.m4])
29m4_include([ltversion.m4])
30m4_include([lt~obsolete.m4])
31m4_include([config/isl.m4])
32
33AC_INIT(move-if-change)
34AC_PREREQ(2.64)
35AC_DISABLE_OPTION_CHECKING
36
37progname=$0
38# if PWD already has a value, it is probably wrong.
39if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
40
41# Export original configure arguments for use by sub-configures.
42# Quote arguments with shell meta charatcers.
43TOPLEVEL_CONFIGURE_ARGUMENTS=
44set -- "$progname" "$@"
45for ac_arg
46do
47  case "$ac_arg" in
48  *" "*|*"      "*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
49    ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
50    # if the argument is of the form -foo=baz, quote the baz part only
51    ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
52  *) ;;
53  esac
54  # Add the quoted argument to the list.
55  TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
56done
57if test "$silent" = yes; then
58  TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
59fi
60# Remove the initial space we just introduced and, as these will be
61# expanded by make, quote '$'.
62TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
63AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
64
65# Find the build, host, and target systems.
66ACX_NONCANONICAL_BUILD
67ACX_NONCANONICAL_HOST
68ACX_NONCANONICAL_TARGET
69
70dnl Autoconf 2.5x and later will set a default program prefix if
71dnl --target was used, even if it was the same as --host.  Disable
72dnl that behavior.  This must be done before AC_CANONICAL_SYSTEM
73dnl to take effect.
74test "$host_noncanonical" = "$target_noncanonical" &&
75  test "$program_prefix$program_suffix$program_transform_name" = \
76    NONENONEs,x,x, &&
77  program_transform_name=s,y,y,
78
79AC_CANONICAL_SYSTEM
80AC_ARG_PROGRAM
81
82m4_pattern_allow([^AS_FOR_TARGET$])dnl
83m4_pattern_allow([^AS_FOR_BUILD$])dnl
84
85# Get 'install' or 'install-sh' and its variants.
86AC_PROG_INSTALL
87ACX_PROG_LN
88AC_PROG_LN_S
89AC_PROG_SED
90AC_PROG_AWK
91
92srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
93
94# We pass INSTALL explicitly to sub-makes.  Make sure that it is not
95# a relative path.
96if test "$INSTALL" = "${srcdir}/install-sh -c"; then
97  INSTALL="${srcpwd}/install-sh -c"
98fi
99
100# Set srcdir to "." if that's what it is.
101# This is important for multilib support.
102pwd=`${PWDCMD-pwd}`
103if test "${pwd}" = "${srcpwd}" ; then
104  srcdir=.
105fi
106
107topsrcdir=$srcpwd
108
109extra_host_args=
110
111### To add a new directory to the tree, first choose whether it is a target
112### or a host dependent tool.  Then put it into the appropriate list
113### (library or tools, host or target), doing a dependency sort.
114
115# Subdirs will be configured in the order listed in build_configdirs,
116# configdirs, or target_configdirs; see the serialization section below.
117
118# Dependency sorting is only needed when *configuration* must be done in
119# a particular order.  In all cases a dependency should be specified in
120# the Makefile, whether or not it's implicitly specified here.
121
122# Double entries in build_configdirs, configdirs, or target_configdirs may
123# cause circular dependencies and break everything horribly.
124
125# these library is used by various programs built for the build
126# environment
127#
128build_libs="build-libiberty build-libcpp"
129
130# these tools are built for the build environment
131build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
132
133# these libraries are used by various programs built for the host environment
134#f
135host_libs="intl libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libdecnumber gmp mpfr mpc isl libelf libiconv"
136
137# these tools are built for the host environment
138# Note, the powerpc-eabi build depends on sim occurring before gdb in order to
139# know that we are building the simulator.
140# binutils, gas and ld appear in that order because it makes sense to run
141# "make check" in that particular order.
142# If --enable-gold is used, "gold" may replace "ld".
143host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gotools"
144
145# libgcj represents the runtime libraries only used by gcj.
146libgcj="target-libffi \
147        target-zlib \
148        target-libjava"
149
150# these libraries are built for the target environment, and are built after
151# the host libraries and the host tools (which may be a cross compiler)
152# Note that libiberty is not a target library.
153target_libraries="target-libgcc \
154                target-libbacktrace \
155                target-libgloss \
156                target-newlib \
157                target-libgomp \
158                target-libcilkrts \
159                target-liboffloadmic \
160                target-libatomic \
161                target-libitm \
162                target-libstdc++-v3 \
163                target-libsanitizer \
164                target-libvtv \
165                target-libmpx \
166                target-libssp \
167                target-libquadmath \
168                target-libgfortran \
169                target-boehm-gc \
170                ${libgcj} \
171                target-libobjc \
172                target-libada \
173                target-libgo"
174
175# these tools are built using the target libraries, and are intended to
176# run only in the target environment
177#
178# note: any program that *uses* libraries that are in the "target_libraries"
179# list belongs in this list.
180#
181target_tools="target-rda"
182
183################################################################################
184
185## All tools belong in one of the four categories, and are assigned above
186## We assign ${configdirs} this way to remove all embedded newlines.  This
187## is important because configure will choke if they ever get through.
188## ${configdirs} is directories we build using the host tools.
189## ${target_configdirs} is directories we build using the target tools.
190configdirs=`echo ${host_libs} ${host_tools}`
191target_configdirs=`echo ${target_libraries} ${target_tools}`
192build_configdirs=`echo ${build_libs} ${build_tools}`
193
194m4_divert_text([PARSE_ARGS],
195[case $srcdir in
196  *" "*)
197m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
198    AC_MSG_ERROR([path to source, $srcdir, contains spaces])
199m4_popdef([AS_MESSAGE_LOG_FD])dnl
200    ;;
201esac
202ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
203])
204
205################################################################################
206
207srcname="gnu development package"
208
209# This gets set non-empty for some net releases of packages.
210appdirs=""
211
212# Define is_cross_compiler to save on calls to 'test'.
213is_cross_compiler=
214if test x"${host}" = x"${target}" ; then
215  is_cross_compiler=no
216else
217  is_cross_compiler=yes
218fi     
219
220# Find the build and target subdir names.
221GCC_TOPLEV_SUBDIRS
222# Be sure to cover against remnants of an in-tree build.
223if test $srcdir != .  && test -d $srcdir/host-${host_noncanonical}; then
224  AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
225Use a pristine source tree when building in a separate tree])
226fi
227
228# Skipdirs are removed silently.
229skipdirs=
230# Noconfigdirs are removed loudly.
231noconfigdirs=""
232
233use_gnu_ld=
234# Make sure we don't let GNU ld be added if we didn't want it.
235if test x$with_gnu_ld = xno ; then
236  use_gnu_ld=no
237  noconfigdirs="$noconfigdirs ld gold"
238fi
239
240use_gnu_as=
241# Make sure we don't let GNU as be added if we didn't want it.
242if test x$with_gnu_as = xno ; then
243  use_gnu_as=no
244  noconfigdirs="$noconfigdirs gas"
245fi
246
247use_included_zlib=
248AC_ARG_WITH(system-zlib,
249[AS_HELP_STRING([--with-system-zlib], [use installed libz])])
250# Make sure we don't let ZLIB be added if we didn't want it.
251if test x$with_system_zlib = xyes ; then
252  use_included_zlib=no
253  noconfigdirs="$noconfigdirs zlib"
254fi
255
256# some tools are so dependent upon X11 that if we're not building with X,
257# it's not even worth trying to configure, much less build, that tool.
258
259case ${with_x} in
260  yes | "") ;; # the default value for this tree is that X11 is available
261  no)
262    skipdirs="${skipdirs} tk itcl libgui"
263    # We won't be able to build gdbtk without X.
264    enable_gdbtk=no
265    ;;
266  *)  echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
267esac
268
269# Some are only suitable for cross toolchains.
270# Remove these if host=target.
271cross_only="target-libgloss target-newlib target-opcodes"
272
273case $is_cross_compiler in
274  no) skipdirs="${skipdirs} ${cross_only}" ;;
275esac
276
277# If both --with-headers and --with-libs are specified, default to
278# --without-newlib.
279if test x"${with_headers}" != x && test x"${with_headers}" != xno \
280   && test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
281  if test x"${with_newlib}" = x ; then
282    with_newlib=no
283  fi
284fi
285
286# Recognize --with-newlib/--without-newlib.
287case ${with_newlib} in
288  no) skipdirs="${skipdirs} target-newlib" ;;
289  yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
290esac
291
292AC_ARG_ENABLE(as-accelerator-for,
293[AS_HELP_STRING([--enable-as-accelerator-for=ARG],
294                [build as offload target compiler.
295                Specify offload host triple by ARG])])
296
297AC_ARG_ENABLE(offload-targets,
298[AS_HELP_STRING([--enable-offload-targets=LIST],
299                [enable offloading to devices from comma-separated LIST of
300                TARGET[=DIR]. Use optional path to find offload target compiler
301                during the build])],
302[
303  if test x"$enable_offload_targets" = x; then
304    AC_MSG_ERROR([no offload targets specified])
305  fi
306], [enable_offload_targets=])
307
308# Handle --enable-gold, --enable-ld.
309# --disable-gold [--enable-ld]
310#     Build only ld.  Default option.
311# --enable-gold [--enable-ld]
312#     Build both gold and ld.  Install gold as "ld.gold", install ld
313#     as "ld.bfd" and "ld".
314# --enable-gold=default [--enable-ld]
315#     Build both gold and ld.  Install gold as "ld.gold" and "ld",
316#     install ld as "ld.bfd".
317# --enable-gold[=default] --disable-ld
318#     Build only gold, which is then installed as both "ld.gold" and "ld".
319# --enable-gold --enable-ld=default
320#     Build both gold (installed as "ld.gold") and ld (installed as "ld"
321#     and ld.bfd).
322#     In other words, ld is default
323# --enable-gold=default --enable-ld=default
324#     Error.
325
326default_ld=
327AC_ARG_ENABLE(gold,
328[AS_HELP_STRING([[--enable-gold[=ARG]]],
329                [build gold @<:@ARG={default,yes,no}@:>@])],
330ENABLE_GOLD=$enableval,
331ENABLE_GOLD=no)
332case "${ENABLE_GOLD}" in
333  yes|default)
334    # Check for ELF target.
335    is_elf=no
336    case "${target}" in
337      *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
338      | *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
339      | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
340      | *-*-solaris2* | *-*-nto* | *-*-nacl*)
341        case "${target}" in
342          *-*-linux*aout* | *-*-linux*oldld*)
343            ;;
344          *)
345            is_elf=yes
346            ;;
347        esac
348    esac
349
350    if test "$is_elf" = "yes"; then
351      # Check for target supported by gold.
352      case "${target}" in
353        i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
354        | aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-*)
355          configdirs="$configdirs gold"
356          if test x${ENABLE_GOLD} = xdefault; then
357            default_ld=gold
358          fi
359          ENABLE_GOLD=yes
360          ;;
361      esac
362    fi
363    ;;
364  no)
365    ;;
366  *)
367    AC_MSG_ERROR([invalid --enable-gold argument])
368    ;;
369esac
370
371AC_ARG_ENABLE(ld,
372[AS_HELP_STRING([[--enable-ld[=ARG]]],
373                [build ld @<:@ARG={default,yes,no}@:>@])],
374ENABLE_LD=$enableval,
375ENABLE_LD=yes)
376
377case "${ENABLE_LD}" in
378  default)
379    if test x${default_ld} != x; then
380      AC_MSG_ERROR([either gold or ld can be the default ld])
381    fi
382    ;;
383  yes)
384    ;;
385  no)
386    if test x${ENABLE_GOLD} != xyes; then
387      AC_MSG_WARN([neither ld nor gold are enabled])
388    fi
389    configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
390    ;;
391  *)
392    AC_MSG_ERROR([invalid --enable-ld argument])
393    ;;
394esac
395
396# PR gas/19109
397# Decide the default method for compressing debug sections.
398# Provide a configure time option to override our default.
399AC_ARG_ENABLE(compressed_debug_sections,
400[AS_HELP_STRING([--enable-compressed-debug-sections={all,gas,gold,ld,none}],
401                [Enable compressed debug sections for gas, gold or ld by
402                 default])],
403[
404  if test x"$enable_compressed_debug_sections" = xyes; then
405    AC_MSG_ERROR([no program with compressed debug sections specified])
406  fi
407], [enable_compressed_debug_sections=])
408
409# Configure extra directories which are host specific
410
411case "${host}" in
412  *-cygwin*)
413    configdirs="$configdirs libtermcap" ;;
414esac
415
416# A target can indicate whether a language isn't supported for some reason.
417# Only spaces may be used in this macro; not newlines or tabs.
418unsupported_languages=
419
420# Remove more programs from consideration, based on the host or
421# target this usually means that a port of the program doesn't
422# exist yet.
423
424case "${host}" in
425  i[[3456789]]86-*-msdosdjgpp*)
426    noconfigdirs="$noconfigdirs tcl tk itcl"
427    ;;
428esac
429
430
431AC_ARG_ENABLE(libquadmath,
432AS_HELP_STRING([--disable-libquadmath],
433  [do not build libquadmath directory]),
434ENABLE_LIBQUADMATH=$enableval,
435ENABLE_LIBQUADMATH=yes)
436if test "${ENABLE_LIBQUADMATH}" = "no" ; then
437  noconfigdirs="$noconfigdirs target-libquadmath"
438fi
439
440
441AC_ARG_ENABLE(libquadmath-support,
442AS_HELP_STRING([--disable-libquadmath-support],
443  [disable libquadmath support for Fortran]),
444ENABLE_LIBQUADMATH_SUPPORT=$enableval,
445ENABLE_LIBQUADMATH_SUPPORT=yes)
446enable_libquadmath_support=
447if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
448  enable_libquadmath_support=no
449fi
450
451
452AC_ARG_ENABLE(libada,
453[AS_HELP_STRING([--enable-libada], [build libada directory])],
454ENABLE_LIBADA=$enableval,
455ENABLE_LIBADA=yes)
456if test "${ENABLE_LIBADA}" != "yes" ; then
457  noconfigdirs="$noconfigdirs gnattools"
458fi
459
460AC_ARG_ENABLE(libssp,
461[AS_HELP_STRING([--enable-libssp], [build libssp directory])],
462ENABLE_LIBSSP=$enableval,
463ENABLE_LIBSSP=yes)
464
465AC_ARG_ENABLE(libstdcxx,
466AS_HELP_STRING([--disable-libstdcxx],
467  [do not build libstdc++-v3 directory]),
468ENABLE_LIBSTDCXX=$enableval,
469ENABLE_LIBSTDCXX=default)
470[if test "${ENABLE_LIBSTDCXX}" = "no" ; then
471  noconfigdirs="$noconfigdirs target-libstdc++-v3"
472fi]
473
474# If this is accelerator compiler and its target is intelmic we enable
475# target liboffloadmic by default.  If this is compiler with offloading
476# for intelmic we enable host liboffloadmic by default.  Otherwise
477# liboffloadmic is disabled by default.
478AC_ARG_ENABLE([liboffloadmic],
479AC_HELP_STRING([[--enable-liboffloadmic[=ARG]]],
480               [build liboffloadmic @<:@ARG={no,host,target}@:>@]),
481[case "$enableval" in
482  no | host | target)
483    enable_liboffloadmic=$enableval ;;
484  *)
485    AC_MSG_ERROR([--enable-liboffloadmic=no/host/target]) ;;
486esac],
487[if test x"$enable_as_accelerator_for" != x; then
488  case "${target}" in
489    *-intelmic-* | *-intelmicemul-*)
490      enable_liboffloadmic=target
491      extra_liboffloadmic_configure_flags="--enable-liboffloadmic=target"
492      ;;
493    *)
494      enable_liboffloadmic=no
495      ;;
496  esac
497else
498  case "${enable_offload_targets}" in
499    *-intelmic-* | *-intelmicemul-*)
500      enable_liboffloadmic=host
501      extra_liboffloadmic_configure_flags="--enable-liboffloadmic=host"
502      ;;
503    *)
504      enable_liboffloadmic=no
505      ;;
506    esac
507fi])
508AC_SUBST(extra_liboffloadmic_configure_flags)
509
510# Save it here so that, even in case of --enable-libgcj, if the Java
511# front-end isn't enabled, we still get libgcj disabled.
512libgcj_saved=$libgcj
513case $enable_libgcj in
514yes)
515  # If we reset it here, it won't get added to noconfigdirs in the
516  # target-specific build rules, so it will be forcibly enabled
517  # (unless the Java language itself isn't enabled).
518  libgcj=
519  ;;
520no)
521  # Make sure we get it printed in the list of not supported target libs.
522  # Don't disable libffi, though, other languages use it.
523  noconfigdirs="$noconfigdirs `echo ${libgcj} | sed -e 's/target-libffi//'`"
524  # Clear libgcj_saved so that even if java is enabled libffi won't be
525  # built.
526  libgcj_saved=
527  ;;
528esac
529
530AC_ARG_ENABLE(static-libjava,
531[AS_HELP_STRING([[--enable-static-libjava[=ARG]]],
532                [build static libjava @<:@default=no@:>@])],
533ENABLE_STATIC_LIBJAVA=$enableval,
534ENABLE_STATIC_LIBJAVA=no)
535enable_static_libjava=
536if test "${ENABLE_STATIC_LIBJAVA}" = "yes" ; then
537  enable_static_libjava=yes
538fi
539
540if test x$enable_static_libjava != xyes ; then
541  EXTRA_CONFIGARGS_LIBJAVA=--disable-static
542fi
543AC_SUBST(EXTRA_CONFIGARGS_LIBJAVA)
544
545# Enable libgomp by default on hosted POSIX systems, and a few others.
546if test x$enable_libgomp = x ; then
547    case "${target}" in
548    *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
549        ;;
550    *-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
551        ;;
552    *-*-solaris2* | *-*-hpux11*)
553        ;;
554    *-*-darwin* | *-*-aix*)
555        ;;
556    nvptx*-*-*)
557        ;;
558    *)
559        noconfigdirs="$noconfigdirs target-libgomp"
560        ;;
561    esac
562fi
563
564# Disable libatomic on unsupported systems.
565if test -d ${srcdir}/libatomic; then
566    if test x$enable_libatomic = x; then
567        AC_MSG_CHECKING([for libatomic support])
568        if (srcdir=${srcdir}/libatomic; \
569                . ${srcdir}/configure.tgt; \
570                test -n "$UNSUPPORTED")
571        then
572            AC_MSG_RESULT([no])
573            noconfigdirs="$noconfigdirs target-libatomic"
574        else
575            AC_MSG_RESULT([yes])
576        fi
577    fi
578fi
579
580# Disable libcilkrts on unsupported systems.
581if test -d ${srcdir}/libcilkrts; then
582    if test x$enable_libcilkrts = x; then
583        AC_MSG_CHECKING([for libcilkrts support])
584        if (srcdir=${srcdir}/libcilkrts; \
585                . ${srcdir}/configure.tgt; \
586                test -n "$UNSUPPORTED")
587        then
588            AC_MSG_RESULT([no])
589            noconfigdirs="$noconfigdirs target-libcilkrts"
590        else
591            AC_MSG_RESULT([yes])
592        fi
593    fi
594fi
595
596# Disable liboffloadmic on unsupported systems.
597if test -d ${srcdir}/liboffloadmic; then
598    if test x$enable_liboffloadmic != xno; then
599        AC_MSG_CHECKING([for liboffloadmic support])
600        if (srcdir=${srcdir}/liboffloadmic; \
601                . ${srcdir}/configure.tgt; \
602                test -n "$UNSUPPORTED")
603        then
604            AC_MSG_RESULT([no])
605            noconfigdirs="$noconfigdirs target-liboffloadmic"
606        else
607            AC_MSG_RESULT([yes])
608        fi
609    fi
610fi
611
612# Disable libitm on unsupported systems.
613if test -d ${srcdir}/libitm; then
614    if test x$enable_libitm = x; then
615        AC_MSG_CHECKING([for libitm support])
616        if (srcdir=${srcdir}/libitm; \
617                . ${srcdir}/configure.tgt; \
618                test -n "$UNSUPPORTED")
619        then
620            AC_MSG_RESULT([no])
621            noconfigdirs="$noconfigdirs target-libitm"
622        else
623            AC_MSG_RESULT([yes])
624        fi
625    fi
626fi
627
628# Disable libsanitizer on unsupported systems.
629if test -d ${srcdir}/libsanitizer; then
630    if test x$enable_libsanitizer = x; then
631        AC_MSG_CHECKING([for libsanitizer support])
632        if (srcdir=${srcdir}/libsanitizer; \
633                . ${srcdir}/configure.tgt; \
634                test -n "$UNSUPPORTED")
635        then
636            AC_MSG_RESULT([no])
637            noconfigdirs="$noconfigdirs target-libsanitizer"
638        else
639            AC_MSG_RESULT([yes])
640        fi
641    fi
642fi
643
644# Disable libvtv on unsupported systems.
645if test -d ${srcdir}/libvtv; then
646    if test x$enable_libvtv = x; then
647        AC_MSG_CHECKING([for libvtv support])
648        if (srcdir=${srcdir}/libvtv; \
649                . ${srcdir}/configure.tgt; \
650                test "$VTV_SUPPORTED" != "yes")
651        then
652            AC_MSG_RESULT([no])
653            noconfigdirs="$noconfigdirs target-libvtv"
654        else
655            AC_MSG_RESULT([yes])
656        fi
657    fi
658fi
659
660
661# Enable libmpx on supported systems by request.
662if test -d ${srcdir}/libmpx; then
663    if test x$enable_libmpx = x; then
664       AC_MSG_CHECKING([for libmpx support])
665       if (srcdir=${srcdir}/libmpx; \
666               . ${srcdir}/configure.tgt; \
667               test "$LIBMPX_SUPPORTED" != "yes")
668       then
669           AC_MSG_RESULT([no])
670           noconfigdirs="$noconfigdirs target-libmpx"
671       else
672           AC_MSG_RESULT([yes])
673       fi
674    fi
675fi
676
677
678
679# Disable libquadmath for some systems.
680case "${target}" in
681  avr-*-*)
682    noconfigdirs="$noconfigdirs target-libquadmath"
683    ;;
684  # libquadmath is unused on AIX and libquadmath build process use of
685  # LD_LIBRARY_PATH can break AIX bootstrap.
686  powerpc-*-aix* | rs6000-*-aix*)
687    noconfigdirs="$noconfigdirs target-libquadmath"
688    ;;
689esac
690
691# Disable libssp for some systems.
692case "${target}" in
693  avr-*-*)
694    # No hosted I/O support.
695    noconfigdirs="$noconfigdirs target-libssp"
696    ;;
697  powerpc-*-aix* | rs6000-*-aix*)
698    noconfigdirs="$noconfigdirs target-libssp"
699    ;;
700  rl78-*-*)
701    # libssp uses a misaligned load to trigger a fault, but the RL78
702    # doesn't fault for those - instead, it gives a build-time error
703    # for explicit misaligned loads.
704    noconfigdirs="$noconfigdirs target-libssp"
705    ;;
706  visium-*-*)
707    # No hosted I/O support.
708    noconfigdirs="$noconfigdirs target-libssp"
709    ;;
710esac
711
712# Disable libstdc++-v3 for some systems.
713# Allow user to override this if they pass --enable-libstdc++-v3
714if test "${ENABLE_LIBSTDCXX}" = "default" ; then
715  case "${target}" in
716    *-*-vxworks*)
717      # VxWorks uses the Dinkumware C++ library.
718      noconfigdirs="$noconfigdirs target-libstdc++-v3"
719      ;;
720    arm*-wince-pe*)
721      # the C++ libraries don't build on top of CE's C libraries
722      noconfigdirs="$noconfigdirs target-libstdc++-v3"
723      ;;
724    avr-*-*)
725      noconfigdirs="$noconfigdirs target-libstdc++-v3"
726      ;;
727    ft32-*-*)
728      noconfigdirs="$noconfigdirs target-libstdc++-v3"
729      ;;
730  esac
731fi
732
733# Disable Fortran for some systems.
734case "${target}" in
735  mmix-*-*)
736    # See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
737    unsupported_languages="$unsupported_languages fortran"
738    ;;
739esac
740
741# Disable Java if libffi is not supported.
742case "${target}" in
743  aarch64-*-*)
744    ;;
745  alpha*-*-*)
746    ;;
747  arm*-*-*)
748    ;;
749  cris-*-*)
750    ;;
751  frv-*-*)
752    ;;
753  hppa*-*-linux*)
754    ;;
755  hppa*-*-hpux*)
756    ;;
757  i?86-*-*)
758    ;;
759  ia64*-*-*)
760    ;;
761  m32r*-*-*)
762    ;;
763  m68k-*-*)
764    ;;
765  mips*-*-rtems*)
766    ;;
767  mips*-*-linux*)
768    ;;
769  powerpc*-*-linux*)
770    ;;
771  powerpc-*-darwin*)
772    ;;
773  powerpc-*-aix* | rs6000-*-aix*)
774    ;;
775  powerpc-*-freebsd*)
776    ;;
777  powerpc64-*-freebsd*)
778    ;;
779  powerpc*-*-rtems*)
780    ;;
781  s390-*-* | s390x-*-*)
782    ;;
783  sh-*-* | sh[[34]]*-*-*)
784    ;;
785  sparc*-*-*)
786    ;;
787  x86_64-*-*)
788    ;;
789  *-*-*)
790    unsupported_languages="$unsupported_languages java"
791    ;;
792esac
793
794# Disable Java, libgcj or related libraries for some systems.
795case "${target}" in
796  powerpc-*-darwin*)
797    ;;
798  i[[3456789]]86-*-darwin*)
799    ;;
800  x86_64-*-darwin[[912]]*)
801    ;;
802  *-*-darwin*)
803    noconfigdirs="$noconfigdirs ${libgcj}"
804    ;;
805  *-*-netware*)
806    noconfigdirs="$noconfigdirs ${libgcj}"
807    ;;
808  *-*-phoenix*)
809    noconfigdirs="$noconfigdirs ${libgcj}"
810    ;;
811  *-*-rtems*)
812    noconfigdirs="$noconfigdirs ${libgcj}"
813    ;;
814  *-*-tpf*)
815    noconfigdirs="$noconfigdirs ${libgcj}"
816    ;;
817  *-*-uclinux*)
818    noconfigdirs="$noconfigdirs ${libgcj}"
819    ;;
820  *-*-vxworks*)
821    noconfigdirs="$noconfigdirs ${libgcj}"
822    ;;
823  alpha*-*-*vms*)
824    noconfigdirs="$noconfigdirs ${libgcj}"
825    ;;
826  arm*-*-freebsd*)
827    noconfigdirs="$noconfigdirs ${libgcj}"
828    ;;
829  arm-wince-pe)
830    noconfigdirs="$noconfigdirs ${libgcj}"
831    ;;
832  arm*-*-symbianelf*)
833    noconfigdirs="$noconfigdirs ${libgcj}"
834    ;;
835  bfin-*-*)
836    noconfigdirs="$noconfigdirs target-boehm-gc"
837    ;;
838  cris-*-* | crisv32-*-*)
839    unsupported_languages="$unsupported_languages java"
840    case "${target}" in
841      *-*-linux*)
842        ;;
843      *) # See PR46792 regarding target-libffi.
844        noconfigdirs="$noconfigdirs target-libffi target-boehm-gc";;
845    esac
846    ;;
847  hppa*64*-*-linux*)
848    # In this case, it's because the hppa64-linux target is for
849    # the kernel only at this point and has no libc, and thus no
850    # headers, crt*.o, etc., all of which are needed by these.
851    unsupported_languages="$unsupported_languages java"
852    ;;
853  hppa*64*-*-hpux*)
854    noconfigdirs="$noconfigdirs ${libgcj}"
855    ;;
856  hppa*-hp-hpux11*)
857    ;;
858  hppa*-*-hpux*)
859    # According to Alexandre Oliva <aoliva@redhat.com>, libjava won't
860    # build on HP-UX 10.20.
861    noconfigdirs="$noconfigdirs ${libgcj}"
862    ;;
863  ia64*-*-*vms*)
864    noconfigdirs="$noconfigdirs ${libgcj}"
865    ;;
866  i[[3456789]]86-w64-mingw*)
867    noconfigdirs="$noconfigdirs ${libgcj}"
868    ;;
869  i[[3456789]]86-*-mingw*)
870    noconfigdirs="$noconfigdirs ${libgcj}"
871    ;;
872  x86_64-*-mingw*)
873    noconfigdirs="$noconfigdirs ${libgcj}"
874    ;;
875  mmix-*-*)
876    noconfigdirs="$noconfigdirs target-libffi target-boehm-gc"
877    ;;
878  powerpc-*-aix*)
879    # copied from rs6000-*-* entry
880    noconfigdirs="$noconfigdirs ${libgcj}"
881    ;;
882  rs6000-*-aix*)
883    noconfigdirs="$noconfigdirs ${libgcj}"
884    ;;
885  ft32-*-*)
886    noconfigdirs="$noconfigdirs ${libgcj}"
887    ;;
888  *-*-lynxos*)
889    noconfigdirs="$noconfigdirs ${libgcj}"
890    ;;
891esac
892
893# Disable the go frontend on systems where it is known to not work. Please keep
894# this in sync with contrib/config-list.mk.
895case "${target}" in
896*-*-darwin* | *-*-cygwin* | *-*-mingw* | *-*-aix*)
897    unsupported_languages="$unsupported_languages go"
898    ;;
899esac
900
901# Disable libgo for some systems where it is known to not work.
902# For testing, you can easily override this with --enable-libgo.
903if test x$enable_libgo = x; then
904    case "${target}" in
905    *-*-darwin*)
906        # PR 46986
907        noconfigdirs="$noconfigdirs target-libgo"
908        ;;
909    *-*-cygwin* | *-*-mingw*)
910        noconfigdirs="$noconfigdirs target-libgo"
911        ;;
912    *-*-aix*)
913        noconfigdirs="$noconfigdirs target-libgo"
914        ;;
915    esac
916fi
917
918# Default libgloss CPU subdirectory.
919libgloss_dir="$target_cpu"
920
921case "${target}" in
922  sh*-*-pe|mips*-*-pe|*arm-wince-pe)
923    libgloss_dir=wince
924    ;;
925  aarch64*-*-* )
926    libgloss_dir=aarch64
927    ;;
928  arm*-*-*)
929    libgloss_dir=arm
930    ;;
931  cris-*-* | crisv32-*-*)
932    libgloss_dir=cris
933    ;;
934  hppa*-*-*)
935    libgloss_dir=pa
936    ;;
937  i[[3456789]]86-*-*)
938    libgloss_dir=i386
939    ;;
940  m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
941    libgloss_dir=m68hc11
942    ;;
943  m68*-*-* | fido-*-*)
944    libgloss_dir=m68k
945    ;;
946  mips*-*-*)
947    libgloss_dir=mips
948    ;;
949  powerpc*-*-*)
950    libgloss_dir=rs6000
951    ;;
952  sparc*-*-*)
953    libgloss_dir=sparc
954    ;;
955esac
956
957# Disable newlib and libgloss for various target OSes.
958case "${target}" in
959  alpha*-dec-osf*)
960    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
961    ;;
962  i[[3456789]]86-*-linux*)
963    # This section makes it possible to build newlib natively on linux.
964    # If we are using a cross compiler then don't configure newlib.
965    if test x${is_cross_compiler} != xno ; then
966      noconfigdirs="$noconfigdirs target-newlib"
967    fi
968    noconfigdirs="$noconfigdirs target-libgloss"
969    # If we are not using a cross compiler, do configure newlib.
970    # Note however, that newlib will only be configured in this situation
971    # if the --with-newlib option has been given, because otherwise
972    # 'target-newlib' will appear in skipdirs.
973    ;;
974  i[[3456789]]86-*-rdos*)
975    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
976    ;;
977  sh*-*-pe|mips*-*-pe|arm-wince-pe)
978    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
979    ;;
980  sparc-*-sunos4*)
981    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
982    ;;
983  *-*-aix*)
984    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
985    ;;
986  *-*-beos*)
987    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
988    ;;
989  *-*-chorusos)
990    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
991    ;;
992  *-*-dragonfly*)
993    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
994    ;;
995  *-*-freebsd*)
996    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
997    ;;
998  *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
999    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1000    ;;
1001  *-*-lynxos*)
1002    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1003    ;;
1004  *-*-mingw*)
1005    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1006    ;;
1007  *-*-netbsd*)
1008    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1009    ;;
1010  *-*-netware*)
1011    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1012    ;;
1013  *-*-tpf*)
1014    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1015    ;;
1016  *-*-uclinux*)
1017    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1018    ;;
1019  *-*-vxworks*)
1020    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1021    ;;
1022esac
1023
1024case "${target}" in
1025  *-*-chorusos)
1026    ;;
1027  aarch64-*-darwin*)
1028    noconfigdirs="$noconfigdirs ld gas gdb gprof"
1029    noconfigdirs="$noconfigdirs sim target-rda"
1030    ;;
1031  arm-*-darwin*)
1032    noconfigdirs="$noconfigdirs ld gas gdb gprof"
1033    noconfigdirs="$noconfigdirs sim target-rda"
1034    ;;
1035  powerpc-*-darwin*)
1036    noconfigdirs="$noconfigdirs ld gas gdb gprof"
1037    noconfigdirs="$noconfigdirs sim target-rda"
1038    ;;
1039  i[[3456789]]86-*-darwin*)
1040    noconfigdirs="$noconfigdirs ld gprof"
1041    noconfigdirs="$noconfigdirs sim target-rda"
1042    ;;
1043  x86_64-*-darwin[[912]]*)
1044    noconfigdirs="$noconfigdirs ld gas gprof"
1045    noconfigdirs="$noconfigdirs sim target-rda"
1046    ;;
1047  *-*-darwin*)
1048    noconfigdirs="$noconfigdirs ld gas gdb gprof"
1049    noconfigdirs="$noconfigdirs sim target-rda"
1050    ;;
1051  *-*-dragonfly*)
1052    ;;
1053  *-*-freebsd*)
1054    if test "x$with_gmp" = x && test "x$with_gmp_dir" = x \
1055        && test -f /usr/local/include/gmp.h; then
1056      with_gmp=/usr/local
1057    fi
1058    ;;
1059  *-*-kaos*)
1060    # Remove unsupported stuff on all kaOS configurations.
1061    noconfigdirs="$noconfigdirs target-libgloss"
1062    ;;
1063  *-*-netbsd*)
1064    ;;
1065  *-*-netware*)
1066    ;;
1067  *-*-phoenix*)
1068    noconfigdirs="$noconfigdirs target-libgloss"
1069    ;;
1070  *-*-rtems*)
1071    noconfigdirs="$noconfigdirs target-libgloss"
1072    # this is not caught below because this stanza matches earlier
1073    case $target in
1074      or1k*-*-*) noconfigdirs="$noconfigdirs gdb" ;;
1075    esac
1076    ;;
1077    # The tpf target doesn't support gdb yet.
1078  *-*-tpf*)
1079    noconfigdirs="$noconfigdirs gdb tcl tk libgui itcl"
1080    ;;
1081  *-*-uclinux*)
1082    noconfigdirs="$noconfigdirs target-rda"
1083    ;;
1084  *-*-vxworks*)
1085    ;;
1086  alpha*-dec-osf*)
1087    # ld works, but does not support shared libraries.
1088    # gas doesn't generate exception information.
1089    noconfigdirs="$noconfigdirs gas ld"
1090    ;;
1091  alpha*-*-*vms*)
1092    noconfigdirs="$noconfigdirs gdb target-newlib target-libgloss"
1093    ;;
1094  alpha*-*-*)
1095    # newlib is not 64 bit ready
1096    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1097    ;;
1098  sh*-*-pe|mips*-*-pe|*arm-wince-pe)
1099    noconfigdirs="$noconfigdirs tcl tk itcl libgui sim"
1100    ;;
1101  arm-*-pe*)
1102    noconfigdirs="$noconfigdirs target-libgloss"
1103    ;;
1104  arm-*-riscix*)
1105    noconfigdirs="$noconfigdirs ld target-libgloss"
1106    ;;
1107  avr-*-*)
1108    if test x${with_avrlibc} != xno; then
1109      noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1110    fi
1111    ;;
1112  c4x-*-* | tic4x-*-*)
1113    noconfigdirs="$noconfigdirs target-libgloss"
1114    ;;
1115  tic54x-*-*)
1116    noconfigdirs="$noconfigdirs target-libgloss gdb"
1117    ;;
1118  d10v-*-*)
1119    noconfigdirs="$noconfigdirs target-libgloss"
1120    ;;
1121  d30v-*-*)
1122    noconfigdirs="$noconfigdirs gdb"
1123    ;;
1124  fr30-*-elf*)
1125    noconfigdirs="$noconfigdirs gdb"
1126    ;;
1127  ft32-*-*)
1128    noconfigdirs="$noconfigdirs target-rda gprof"
1129    ;;
1130  moxie-*-*)
1131    noconfigdirs="$noconfigdirs"
1132    ;;
1133  h8300*-*-*)
1134    noconfigdirs="$noconfigdirs target-libgloss"
1135    ;;
1136  h8500-*-*)
1137    noconfigdirs="$noconfigdirs target-libgloss"
1138    ;;
1139  hppa1.1-*-osf* | hppa1.1-*-bsd* )
1140    ;;
1141  hppa*64*-*-hpux*)
1142    noconfigdirs="$noconfigdirs gdb"
1143    ;;
1144  hppa*-*-hpux11*)
1145    noconfigdirs="$noconfigdirs gdb ld"
1146    ;;
1147  hppa*64*-*-linux*)
1148    ;;
1149  hppa*-*-linux*)
1150    ;;
1151  hppa*-*-*elf* | \
1152  hppa*-*-lites* | \
1153  hppa*-*-openbsd* | \
1154  hppa*64*-*-*)
1155    ;;
1156  hppa*-*-pro*)
1157    ;;
1158  hppa*-*-*)
1159    noconfigdirs="$noconfigdirs ld"
1160    ;;
1161  i960-*-*)
1162    noconfigdirs="$noconfigdirs gdb"
1163    ;;
1164  ia64*-*-elf*)
1165    # No gdb support yet.
1166    noconfigdirs="$noconfigdirs readline libgui itcl gdb"
1167    ;;
1168  ia64*-**-hpux*)
1169    # No ld support yet.
1170    noconfigdirs="$noconfigdirs gdb libgui itcl ld"
1171    ;;
1172  ia64*-*-*vms*)
1173    # No ld support yet.
1174    noconfigdirs="$noconfigdirs libgui itcl ld"
1175    ;;
1176  i[[3456789]]86-w64-mingw*)
1177    ;;
1178  i[[3456789]]86-*-mingw*)
1179    target_configdirs="$target_configdirs target-winsup"
1180    ;;
1181  *-*-cygwin*)
1182    target_configdirs="$target_configdirs target-libtermcap target-winsup"
1183    noconfigdirs="$noconfigdirs target-libgloss"
1184    # always build newlib if winsup directory is present.
1185    if test -d "$srcdir/winsup/cygwin"; then
1186      skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1187    elif test -d "$srcdir/newlib"; then
1188      echo "Warning: winsup/cygwin is missing so newlib can't be built."
1189    fi
1190    ;;
1191  i[[3456789]]86-*-pe)
1192    noconfigdirs="$noconfigdirs target-libgloss"
1193    ;;
1194  i[[3456789]]86-*-sco3.2v5*)
1195    # The linker does not yet know about weak symbols in COFF,
1196    # and is not configured to handle mixed ELF and COFF.
1197    noconfigdirs="$noconfigdirs ld target-libgloss"
1198    ;;
1199  i[[3456789]]86-*-sco*)
1200    noconfigdirs="$noconfigdirs gprof target-libgloss"
1201    ;;
1202  i[[3456789]]86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
1203    noconfigdirs="$noconfigdirs target-libgloss"
1204    ;;
1205  i[[3456789]]86-*-sysv4*)
1206    noconfigdirs="$noconfigdirs target-libgloss"
1207    ;;
1208  i[[3456789]]86-*-beos*)
1209    noconfigdirs="$noconfigdirs gdb"
1210    ;;
1211  i[[3456789]]86-*-rdos*)
1212    noconfigdirs="$noconfigdirs gdb"
1213    ;;
1214  mmix-*-*)
1215    noconfigdirs="$noconfigdirs gdb"
1216    ;;
1217  mt-*-*)
1218    noconfigdirs="$noconfigdirs sim"
1219    ;;
1220  powerpc-*-aix*)
1221    # copied from rs6000-*-* entry
1222    noconfigdirs="$noconfigdirs gprof"
1223    ;;
1224  powerpc*-*-winnt* | powerpc*-*-pe*)
1225    target_configdirs="$target_configdirs target-winsup"
1226    noconfigdirs="$noconfigdirs gdb tcl tk target-libgloss itcl"
1227    # always build newlib.
1228    skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
1229    ;;
1230    # This is temporary until we can link against shared libraries
1231  powerpcle-*-solaris*)
1232    noconfigdirs="$noconfigdirs gdb sim tcl tk itcl"
1233    ;;
1234  powerpc-*-beos*)
1235    noconfigdirs="$noconfigdirs gdb"
1236    ;;
1237  rs6000-*-lynxos*)
1238    noconfigdirs="$noconfigdirs gprof"
1239    ;;
1240  rs6000-*-aix*)
1241    noconfigdirs="$noconfigdirs gprof"
1242    ;;
1243  rs6000-*-*)
1244    noconfigdirs="$noconfigdirs gprof"
1245    ;;
1246  m68k-apollo-*)
1247    noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
1248    ;;
1249  microblaze*)
1250    noconfigdirs="$noconfigdirs gprof"
1251    ;;
1252  mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
1253    if test x$with_newlib = xyes; then
1254      noconfigdirs="$noconfigdirs gprof"
1255    fi
1256    ;;
1257  mips*-*-irix5*)
1258    noconfigdirs="$noconfigdirs gprof target-libgloss"
1259    ;;
1260  mips*-*-irix6*)
1261    noconfigdirs="$noconfigdirs gprof target-libgloss"
1262    ;;
1263  mips*-*-bsd*)
1264    noconfigdirs="$noconfigdirs ld gas gprof target-libgloss"
1265    ;;
1266  mips*-*-linux*)
1267    ;;
1268  mips*-*-ultrix* | mips*-*-osf* | mips*-*-ecoff* | mips*-*-pe* \
1269  | mips*-*-irix* | mips*-*-lnews* | mips*-*-riscos*)
1270    noconfigdirs="$noconfigdirs ld gas gprof"
1271    ;;
1272  mips*-*-*)
1273    noconfigdirs="$noconfigdirs gprof"
1274    ;;
1275  nds32*-*-*)
1276    noconfigdirs="$noconfigdirs gdb"
1277    ;;
1278  nvptx*-*-*)
1279    noconfigdirs="$noconfigdirs target-libssp target-libstdc++-v3 target-libobjc"
1280    ;;
1281  or1k*-*-*)
1282    noconfigdirs="$noconfigdirs gdb"
1283    ;;
1284  sh-*-*)
1285    case "${target}" in
1286      sh*-*-elf)
1287         ;;
1288      *)
1289         noconfigdirs="$noconfigdirs target-libgloss" ;;
1290    esac
1291    ;;
1292  sparc-*-sunos4*)
1293    if test x${is_cross_compiler} = xno ; then
1294           use_gnu_ld=no
1295    fi
1296    ;;
1297  tic6x-*-*)
1298    noconfigdirs="$noconfigdirs sim"
1299    ;;
1300  tilepro*-*-* | tilegx*-*-*)
1301    noconfigdirs="$noconfigdirs sim"
1302    ;;
1303  v810-*-*)
1304    noconfigdirs="$noconfigdirs bfd binutils gas gdb ld opcodes target-libgloss"
1305    ;;
1306  vax-*-*)
1307    noconfigdirs="$noconfigdirs target-newlib target-libgloss"
1308    ;;
1309esac
1310
1311# If we aren't building newlib, then don't build libgloss, since libgloss
1312# depends upon some newlib header files.
1313case "${noconfigdirs}" in
1314  *target-libgloss*) ;;
1315  *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
1316esac
1317
1318# Work in distributions that contain no compiler tools, like Autoconf.
1319host_makefile_frag=/dev/null
1320if test -d ${srcdir}/config ; then
1321case "${host}" in
1322  i[[3456789]]86-*-msdosdjgpp*)
1323    host_makefile_frag="config/mh-djgpp"
1324    ;;
1325  *-cygwin*)
1326    ACX_CHECK_CYGWIN_CAT_WORKS
1327    host_makefile_frag="config/mh-cygwin"
1328    ;;
1329  *-mingw*)
1330    host_makefile_frag="config/mh-mingw"
1331    ;;
1332  alpha*-linux*)
1333    host_makefile_frag="config/mh-alpha-linux"
1334    ;;
1335  hppa*-hp-hpux10*)
1336    host_makefile_frag="config/mh-pa-hpux10"
1337    ;;
1338  hppa*-hp-hpux*)
1339    host_makefile_frag="config/mh-pa"
1340    ;;
1341  hppa*-*)     
1342    host_makefile_frag="config/mh-pa"
1343    ;;
1344  *-*-darwin*)
1345    host_makefile_frag="config/mh-darwin"
1346    ;;
1347  powerpc-*-aix*)
1348    host_makefile_frag="config/mh-ppc-aix"
1349    ;;
1350  rs6000-*-aix*)
1351    host_makefile_frag="config/mh-ppc-aix"
1352    ;;
1353esac
1354fi
1355
1356if test "${build}" != "${host}" ; then
1357  AR_FOR_BUILD=${AR_FOR_BUILD-ar}
1358  AS_FOR_BUILD=${AS_FOR_BUILD-as}
1359  CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
1360  CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
1361  GCJ_FOR_BUILD=${GCJ_FOR_BUILD-gcj}
1362  GFORTRAN_FOR_BUILD=${GFORTRAN_FOR_BUILD-gfortran}
1363  GOC_FOR_BUILD=${GOC_FOR_BUILD-gccgo}
1364  DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
1365  LD_FOR_BUILD=${LD_FOR_BUILD-ld}
1366  NM_FOR_BUILD=${NM_FOR_BUILD-nm}
1367  RANLIB_FOR_BUILD=${RANLIB_FOR_BUILD-ranlib}
1368  WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
1369  WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
1370else
1371  AR_FOR_BUILD="\$(AR)"
1372  AS_FOR_BUILD="\$(AS)"
1373  CC_FOR_BUILD="\$(CC)"
1374  CXX_FOR_BUILD="\$(CXX)"
1375  GCJ_FOR_BUILD="\$(GCJ)"
1376  GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
1377  GOC_FOR_BUILD="\$(GOC)"
1378  DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
1379  LD_FOR_BUILD="\$(LD)"
1380  NM_FOR_BUILD="\$(NM)"
1381  RANLIB_FOR_BUILD="\$(RANLIB)"
1382  WINDRES_FOR_BUILD="\$(WINDRES)"
1383  WINDMC_FOR_BUILD="\$(WINDMC)"
1384fi
1385
1386AC_PROG_CC
1387AC_PROG_CXX
1388
1389# We must set the default linker to the linker used by gcc for the correct
1390# operation of libtool.  If LD is not defined and we are using gcc, try to
1391# set the LD default to the ld used by gcc.
1392if test -z "$LD"; then
1393  if test "$GCC" = yes; then
1394    case $build in
1395    *-*-mingw*)
1396      gcc_prog_ld=`$CC -print-prog-name=ld 2>&1 | tr -d '\015'` ;;
1397    *)
1398      gcc_prog_ld=`$CC -print-prog-name=ld 2>&1` ;;
1399    esac
1400    case $gcc_prog_ld in
1401    # Accept absolute paths.
1402    [[\\/]* | [A-Za-z]:[\\/]*)]
1403      LD="$gcc_prog_ld" ;;
1404    esac
1405  fi
1406fi
1407
1408# Check whether -static-libstdc++ -static-libgcc is supported.
1409have_static_libs=no
1410if test "$GCC" = yes; then
1411  saved_LDFLAGS="$LDFLAGS"
1412
1413  LDFLAGS="$LDFLAGS -static-libstdc++ -static-libgcc"
1414  AC_MSG_CHECKING([whether g++ accepts -static-libstdc++ -static-libgcc])
1415  AC_LANG_PUSH(C++)
1416  AC_LINK_IFELSE([
1417#if (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
1418#error -static-libstdc++ not implemented
1419#endif
1420int main() {}],
1421    [AC_MSG_RESULT([yes]); have_static_libs=yes],
1422    [AC_MSG_RESULT([no])])
1423  AC_LANG_POP(C++)
1424
1425  LDFLAGS="$saved_LDFLAGS"
1426fi
1427
1428ACX_PROG_GNAT
1429ACX_PROG_CMP_IGNORE_INITIAL
1430
1431AC_ARG_ENABLE([bootstrap],
1432[AS_HELP_STRING([--enable-bootstrap],
1433                [enable bootstrapping @<:@yes if native build@:>@])],,
1434enable_bootstrap=default)
1435
1436# Issue errors and warnings for invalid/strange bootstrap combinations.
1437if test -r $srcdir/gcc/configure; then
1438  have_compiler=yes
1439else
1440  have_compiler=no
1441fi
1442
1443case "$have_compiler:$host:$target:$enable_bootstrap" in
1444  *:*:*:no) ;;
1445
1446  # Default behavior.  Enable bootstrap if we have a compiler
1447  # and we are in a native configuration.
1448  yes:$build:$build:default)
1449    enable_bootstrap=yes ;;
1450
1451  *:*:*:default)
1452    enable_bootstrap=no ;;
1453
1454  # We have a compiler and we are in a native configuration, bootstrap is ok
1455  yes:$build:$build:yes)
1456    ;;
1457
1458  # Other configurations, but we have a compiler.  Assume the user knows
1459  # what he's doing.
1460  yes:*:*:yes)
1461    AC_MSG_WARN([trying to bootstrap a cross compiler])
1462    ;;
1463
1464  # No compiler: if they passed --enable-bootstrap explicitly, fail
1465  no:*:*:yes)
1466    AC_MSG_ERROR([cannot bootstrap without a compiler]) ;;
1467
1468  # Fail if wrong command line
1469  *)
1470    AC_MSG_ERROR([invalid option for --enable-bootstrap])
1471    ;;
1472esac
1473
1474# When bootstrapping with GCC, build stage 1 in C++98 mode to ensure that a
1475# C++98 compiler can still start the bootstrap.
1476if test "$enable_bootstrap:$GXX" = "yes:yes"; then
1477  CXX="$CXX -std=gnu++98"
1478fi
1479
1480# Used for setting $lt_cv_objdir
1481_LT_CHECK_OBJDIR
1482
1483# Check for GMP, MPFR and MPC
1484gmplibs="-lmpc -lmpfr -lgmp"
1485gmpinc=
1486have_gmp=no
1487
1488# Specify a location for mpc
1489# check for this first so it ends up on the link line before mpfr.
1490AC_ARG_WITH(mpc,
1491[AS_HELP_STRING([--with-mpc=PATH],
1492                [specify prefix directory for installed MPC package.
1493                 Equivalent to --with-mpc-include=PATH/include
1494                 plus --with-mpc-lib=PATH/lib])])
1495AC_ARG_WITH(mpc-include,
1496[AS_HELP_STRING([--with-mpc-include=PATH],
1497                [specify directory for installed MPC include files])])
1498AC_ARG_WITH(mpc-lib,
1499[AS_HELP_STRING([--with-mpc-lib=PATH],
1500                [specify directory for the installed MPC library])])
1501
1502if test "x$with_mpc" != x; then
1503  gmplibs="-L$with_mpc/lib $gmplibs"
1504  gmpinc="-I$with_mpc/include $gmpinc"
1505fi
1506if test "x$with_mpc_include" != x; then
1507  gmpinc="-I$with_mpc_include $gmpinc"
1508fi
1509if test "x$with_mpc_lib" != x; then
1510  gmplibs="-L$with_mpc_lib $gmplibs"
1511fi
1512if test "x$with_mpc$with_mpc_include$with_mpc_lib" = x && test -d ${srcdir}/mpc; then
1513  gmplibs='-L$$r/$(HOST_SUBDIR)/mpc/src/'"$lt_cv_objdir $gmplibs"
1514  gmpinc='-I$$s/mpc/src '"$gmpinc"
1515  # Do not test the mpc version.  Assume that it is sufficient, since
1516  # it is in the source tree, and the library has not been built yet
1517  # but it would be included on the link line in the version check below
1518  # hence making the test fail.
1519  have_gmp=yes
1520fi
1521
1522# Specify a location for mpfr
1523# check for this first so it ends up on the link line before gmp.
1524AC_ARG_WITH(mpfr-dir,
1525[AS_HELP_STRING([--with-mpfr-dir=PATH], [this option has been REMOVED])],
1526[AC_MSG_ERROR([The --with-mpfr-dir=PATH option has been removed.
1527Use --with-mpfr=PATH or --with-mpfr-include=PATH plus --with-mpfr-lib=PATH])])
1528
1529AC_ARG_WITH(mpfr,
1530[AS_HELP_STRING([--with-mpfr=PATH],
1531                [specify prefix directory for installed MPFR package.
1532                 Equivalent to --with-mpfr-include=PATH/include
1533                 plus --with-mpfr-lib=PATH/lib])])
1534AC_ARG_WITH(mpfr-include,
1535[AS_HELP_STRING([--with-mpfr-include=PATH],
1536                [specify directory for installed MPFR include files])])
1537AC_ARG_WITH(mpfr-lib,
1538[AS_HELP_STRING([--with-mpfr-lib=PATH],
1539                [specify directory for the installed MPFR library])])
1540
1541if test "x$with_mpfr" != x; then
1542  gmplibs="-L$with_mpfr/lib $gmplibs"
1543  gmpinc="-I$with_mpfr/include $gmpinc"
1544fi
1545if test "x$with_mpfr_include" != x; then
1546  gmpinc="-I$with_mpfr_include $gmpinc"
1547fi
1548if test "x$with_mpfr_lib" != x; then
1549  gmplibs="-L$with_mpfr_lib $gmplibs"
1550fi
1551if test "x$with_mpfr$with_mpfr_include$with_mpfr_lib" = x && test -d ${srcdir}/mpfr; then
1552  gmplibs='-L$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir $gmplibs"
1553  gmpinc='-I$$r/$(HOST_SUBDIR)/mpfr/src -I$$s/mpfr/src '"$gmpinc"
1554  extra_mpc_mpfr_configure_flags='--with-mpfr-include=$$s/mpfr/src --with-mpfr-lib=$$r/$(HOST_SUBDIR)/mpfr/src/'"$lt_cv_objdir"
1555  # Do not test the mpfr version.  Assume that it is sufficient, since
1556  # it is in the source tree, and the library has not been built yet
1557  # but it would be included on the link line in the version check below
1558  # hence making the test fail.
1559  have_gmp=yes
1560fi
1561
1562# Specify a location for gmp
1563AC_ARG_WITH(gmp-dir,
1564[AS_HELP_STRING([--with-gmp-dir=PATH], [this option has been REMOVED])],
1565[AC_MSG_ERROR([The --with-gmp-dir=PATH option has been removed.
1566Use --with-gmp=PATH or --with-gmp-include=PATH plus --with-gmp-lib=PATH])])
1567
1568AC_ARG_WITH(gmp,
1569[AS_HELP_STRING([--with-gmp=PATH],
1570                [specify prefix directory for the installed GMP package.
1571                 Equivalent to --with-gmp-include=PATH/include
1572                 plus --with-gmp-lib=PATH/lib])])
1573AC_ARG_WITH(gmp-include,
1574[AS_HELP_STRING([--with-gmp-include=PATH],
1575                [specify directory for installed GMP include files])])
1576AC_ARG_WITH(gmp-lib,
1577[AS_HELP_STRING([--with-gmp-lib=PATH],
1578                [specify directory for the installed GMP library])])
1579
1580
1581if test "x$with_gmp" != x; then
1582  gmplibs="-L$with_gmp/lib $gmplibs"
1583  gmpinc="-I$with_gmp/include $gmpinc"
1584fi
1585if test "x$with_gmp_include" != x; then
1586  gmpinc="-I$with_gmp_include $gmpinc"
1587fi
1588if test "x$with_gmp_lib" != x; then
1589  gmplibs="-L$with_gmp_lib $gmplibs"
1590fi
1591if test "x$with_gmp$with_gmp_include$with_gmp_lib" = x && test -d ${srcdir}/gmp; then
1592  gmplibs='-L$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir $gmplibs"
1593  gmpinc='-I$$r/$(HOST_SUBDIR)/gmp -I$$s/gmp '"$gmpinc"
1594  extra_mpfr_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1595  extra_mpc_gmp_configure_flags='--with-gmp-include=$$r/$(HOST_SUBDIR)/gmp --with-gmp-lib=$$r/$(HOST_SUBDIR)/gmp/'"$lt_cv_objdir"
1596  extra_isl_gmp_configure_flags='--with-gmp-builddir=$$r/$(HOST_SUBDIR)/gmp'
1597  # Do not test the gmp version.  Assume that it is sufficient, since
1598  # it is in the source tree, and the library has not been built yet
1599  # but it would be included on the link line in the version check below
1600  # hence making the test fail.
1601  have_gmp=yes
1602fi
1603
1604if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
1605  have_gmp=yes
1606  saved_CFLAGS="$CFLAGS"
1607  CFLAGS="$CFLAGS $gmpinc"
1608  # Check for the recommended and required versions of GMP.
1609  AC_MSG_CHECKING([for the correct version of gmp.h])
1610  AC_TRY_COMPILE([#include "gmp.h"],[
1611  #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1612  #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1613  #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,2,3)
1614  choke me
1615  #endif
1616  ], [AC_TRY_COMPILE([#include <gmp.h>],[
1617  #define GCC_GMP_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
1618  #define GCC_GMP_VERSION GCC_GMP_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL)
1619  #if GCC_GMP_VERSION < GCC_GMP_VERSION_NUM(4,3,2)
1620  choke me
1621  #endif
1622  ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1623   [AC_MSG_RESULT([no]); have_gmp=no])
1624
1625  # If we have GMP, check the MPFR version.
1626  if test x"$have_gmp" = xyes; then
1627    # Check for the recommended and required versions of MPFR.
1628    AC_MSG_CHECKING([for the correct version of mpfr.h])
1629    AC_TRY_COMPILE([#include <gmp.h>
1630    #include <mpfr.h>],[
1631    #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,0)
1632    choke me
1633    #endif
1634    ], [AC_TRY_COMPILE([#include <gmp.h>
1635    #include <mpfr.h>],[
1636    #if MPFR_VERSION < MPFR_VERSION_NUM(2,4,2)
1637    choke me
1638    #endif
1639    ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1640     [AC_MSG_RESULT([no]); have_gmp=no])
1641  fi
1642
1643  # Check for the MPC header version.
1644  if test x"$have_gmp" = xyes ; then
1645    # Check for the recommended and required versions of MPC.
1646    AC_MSG_CHECKING([for the correct version of mpc.h])
1647    AC_TRY_COMPILE([#include <mpc.h>],[
1648    #if MPC_VERSION < MPC_VERSION_NUM(0,8,0)
1649    choke me
1650    #endif
1651    ], [AC_TRY_COMPILE([#include <mpc.h>],[
1652    #if MPC_VERSION < MPC_VERSION_NUM(0,8,1)
1653    choke me
1654    #endif
1655    ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([buggy but acceptable])])],
1656     [AC_MSG_RESULT([no]); have_gmp=no])
1657  fi
1658
1659  # Now check the MPFR library.
1660  if test x"$have_gmp" = xyes; then
1661    saved_LIBS="$LIBS"
1662    LIBS="$LIBS $gmplibs"
1663    AC_MSG_CHECKING([for the correct version of the gmp/mpfr/mpc libraries])
1664    AC_TRY_LINK([#include <mpc.h>],[
1665    mpfr_t n;
1666    mpfr_t x;
1667    mpc_t c;
1668    int t;
1669    mpfr_init (n);
1670    mpfr_init (x);
1671    mpfr_atan2 (n, n, x, GMP_RNDN);
1672    mpfr_erfc (n, x, GMP_RNDN);
1673    mpfr_subnormalize (x, t, GMP_RNDN);
1674    mpfr_clear(n);
1675    mpfr_clear(x);
1676    mpc_init2 (c, 53);
1677    mpc_set_ui_ui (c, 1, 1, MPC_RNDNN);
1678    mpc_cosh (c, c, MPC_RNDNN);
1679    mpc_pow (c, c, c, MPC_RNDNN);
1680    mpc_acosh (c, c, MPC_RNDNN);
1681    mpc_clear (c);
1682    ], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]); have_gmp=no])
1683    LIBS="$saved_LIBS"
1684  fi
1685
1686  CFLAGS="$saved_CFLAGS"
1687
1688# The library versions listed in the error message below should match
1689# the HARD-minimums enforced above.
1690  if test x$have_gmp != xyes; then
1691    AC_MSG_ERROR([Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+.
1692Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
1693their locations.  Source code for these libraries can be found at
1694their respective hosting sites as well as at
1695ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
1696http://gcc.gnu.org/install/prerequisites.html for additional info.  If
1697you obtained GMP, MPFR and/or MPC from a vendor distribution package,
1698make sure that you have installed both the libraries and the header
1699files.  They may be located in separate packages.])
1700  fi
1701fi
1702
1703# Flags needed for both GMP, MPFR and/or MPC.
1704AC_SUBST(gmplibs)
1705AC_SUBST(gmpinc)
1706AC_SUBST(extra_mpfr_configure_flags)
1707AC_SUBST(extra_mpc_gmp_configure_flags)
1708AC_SUBST(extra_mpc_mpfr_configure_flags)
1709AC_SUBST(extra_isl_gmp_configure_flags)
1710
1711# Libraries to use for stage1 or when not bootstrapping.
1712AC_ARG_WITH(stage1-libs,
1713[AS_HELP_STRING([--with-stage1-libs=LIBS], [libraries for stage1])],
1714[if test "$withval" = "no" -o "$withval" = "yes"; then
1715   stage1_libs=
1716 else
1717   stage1_libs=$withval
1718 fi],
1719[stage1_libs=])
1720AC_SUBST(stage1_libs)
1721
1722# Linker flags to use for stage1 or when not bootstrapping.
1723AC_ARG_WITH(stage1-ldflags,
1724[AS_HELP_STRING([--with-stage1-ldflags=FLAGS], [linker flags for stage1])],
1725[if test "$withval" = "no" -o "$withval" = "yes"; then
1726   stage1_ldflags=
1727 else
1728   stage1_ldflags=$withval
1729 fi],
1730[stage1_ldflags=
1731 # In stage 1, default to linking libstdc++ and libgcc statically with GCC
1732 # if supported.  But if the user explicitly specified the libraries to use,
1733 # trust that they are doing what they want.
1734 if test "$stage1_libs" = "" -a "$have_static_libs" = yes; then
1735   stage1_ldflags="-static-libstdc++ -static-libgcc"
1736 fi])
1737AC_SUBST(stage1_ldflags)
1738
1739# Libraries to use for stage2 and later builds.
1740AC_ARG_WITH(boot-libs,
1741[AS_HELP_STRING([--with-boot-libs=LIBS], [libraries for stage2 and later])],
1742[if test "$withval" = "no" -o "$withval" = "yes"; then
1743   poststage1_libs=
1744 else
1745   poststage1_libs=$withval
1746 fi],
1747[poststage1_libs=])
1748AC_SUBST(poststage1_libs)
1749
1750# Linker flags to use for stage2 and later builds.
1751AC_ARG_WITH(boot-ldflags,
1752[AS_HELP_STRING([--with-boot-ldflags=FLAGS],
1753                [linker flags for stage2 and later])],
1754[if test "$withval" = "no" -o "$withval" = "yes"; then
1755   poststage1_ldflags=
1756 else
1757   poststage1_ldflags=$withval
1758 fi],
1759[poststage1_ldflags=
1760 # In stages 2 and 3, default to linking libstdc++ and libgcc
1761 # statically.  But if the user explicitly specified the libraries to
1762 # use, trust that they are doing what they want.
1763 if test "$poststage1_libs" = ""; then
1764   poststage1_ldflags="-static-libstdc++ -static-libgcc"
1765 fi])
1766AC_SUBST(poststage1_ldflags)
1767
1768# GCC GRAPHITE dependency isl.
1769# Basic setup is inlined here, actual checks are in config/isl.m4
1770
1771AC_ARG_WITH(isl,
1772  [AS_HELP_STRING(
1773   [--with-isl=PATH],
1774   [Specify prefix directory for the installed isl package.
1775    Equivalent to --with-isl-include=PATH/include
1776    plus --with-isl-lib=PATH/lib])])
1777
1778# Treat --without-isl as a request to disable
1779# GRAPHITE support and skip all following checks.
1780if test "x$with_isl" != "xno"; then
1781  # Check for isl
1782  dnl Provide configure switches and initialize islinc & isllibs
1783  dnl with user input.
1784  ISL_INIT_FLAGS
1785  dnl The versions of isl that work for Graphite
1786  ISL_CHECK_VERSION()
1787  dnl Only execute fail-action, if isl has been requested.
1788  ISL_IF_FAILED([
1789    AC_MSG_ERROR([Unable to find a usable isl.  See config.log for details.])])
1790fi
1791
1792# If the isl check failed, disable builds of in-tree variant of isl
1793if test "x$with_isl" = xno ||
1794   test "x$gcc_cv_isl" = xno; then
1795  noconfigdirs="$noconfigdirs isl"
1796  islinc=
1797fi
1798
1799AC_SUBST(isllibs)
1800AC_SUBST(islinc)
1801
1802# Check for LTO support.
1803AC_ARG_ENABLE(lto,
1804[AS_HELP_STRING([--enable-lto], [enable link time optimization support])],
1805enable_lto=$enableval,
1806enable_lto=yes; default_enable_lto=yes)
1807
1808ACX_ELF_TARGET_IFELSE([# ELF platforms build the lto-plugin always.
1809  build_lto_plugin=yes
1810],[if test x"$default_enable_lto" = x"yes" ; then
1811    case $target in
1812      *-apple-darwin9* | *-cygwin* | *-mingw* | *djgpp*) ;;
1813      # On other non-ELF platforms, LTO has yet to be validated.
1814      *) enable_lto=no ;;
1815    esac
1816  else
1817  # Apart from ELF platforms, only Windows and Darwin support LTO so far.
1818  # It would also be nice to check the binutils support, but we don't
1819  # have gcc_GAS_CHECK_FEATURE available here.  For now, we'll just
1820  # warn during gcc/ subconfigure; unless you're bootstrapping with
1821  # -flto it won't be needed until after installation anyway.
1822    case $target in
1823      *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
1824      *) if test x"$enable_lto" = x"yes"; then
1825        AC_MSG_ERROR([LTO support is not enabled for this target.])
1826        fi
1827      ;;
1828    esac
1829  fi
1830  # Among non-ELF, only Windows platforms support the lto-plugin so far.
1831  # Build it unless LTO was explicitly disabled.
1832  case $target in
1833    *-cygwin* | *-mingw*) build_lto_plugin=$enable_lto ;;
1834    *) ;;
1835  esac
1836])
1837
1838AC_ARG_ENABLE(linker-plugin-configure-flags,
1839  [AS_HELP_STRING([[--enable-linker-plugin-configure-flags=FLAGS]],
1840    [additional flags for configuring linker plugins @<:@none@:>@])],
1841  extra_linker_plugin_configure_flags=$enableval,
1842  extra_linker_plugin_configure_flags=)
1843AC_SUBST(extra_linker_plugin_configure_flags)
1844AC_ARG_ENABLE(linker-plugin-flags,
1845  [AS_HELP_STRING([[--enable-linker-plugin-flags=FLAGS]],
1846    [additional flags for configuring and building linker plugins @<:@none@:>@])],
1847  extra_linker_plugin_flags=$enableval,
1848  extra_linker_plugin_flags=)
1849AC_SUBST(extra_linker_plugin_flags)
1850
1851
1852# By default, C and C++ are the only stage 1 languages.
1853stage1_languages=,c,
1854
1855# Target libraries that we bootstrap.
1856bootstrap_target_libs=,target-libgcc,
1857
1858# Figure out what language subdirectories are present.
1859# Look if the user specified --enable-languages="..."; if not, use
1860# the environment variable $LANGUAGES if defined. $LANGUAGES might
1861# go away some day.
1862# NB:  embedded tabs in this IF block -- do not untabify
1863if test -d ${srcdir}/gcc; then
1864  if test x"${enable_languages+set}" != xset; then
1865    if test x"${LANGUAGES+set}" = xset; then
1866      enable_languages="${LANGUAGES}"
1867        echo configure.ac: warning: setting LANGUAGES is deprecated, use --enable-languages instead 1>&2
1868    else
1869      enable_languages=all
1870    fi
1871  else
1872    if test x"${enable_languages}" = x ||
1873       test x"${enable_languages}" = xyes;
1874       then
1875      echo configure.ac: --enable-languages needs at least one language argument 1>&2
1876      exit 1
1877    fi
1878  fi
1879  enable_languages=`echo "${enable_languages}" | sed -e 's/[[   ,]][[   ,]]*/,/g' -e 's/,$//'`
1880
1881  # 'f95' is the old name for the 'fortran' language. We issue a warning
1882  # and make the substitution.
1883  case ,${enable_languages}, in
1884    *,f95,*)
1885      echo configure.ac: warning: 'f95' as language name is deprecated, use 'fortran' instead 1>&2
1886      enable_languages=`echo "${enable_languages}" | sed -e 's/f95/fortran/g'`
1887      ;;
1888  esac
1889
1890  # If bootstrapping, C++ must be enabled.
1891  case ",$enable_languages,:$enable_bootstrap" in
1892    *,c++,*:*) ;;
1893    *:yes)
1894      if test -f ${srcdir}/gcc/cp/config-lang.in; then
1895        enable_languages="${enable_languages},c++"
1896      else
1897        AC_MSG_ERROR([bootstrapping requires c++ sources])
1898      fi
1899      ;;
1900  esac
1901
1902  # First scan to see if an enabled language requires some other language.
1903  # We assume that a given config-lang.in will list all the language
1904  # front ends it requires, even if some are required indirectly.
1905  for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1906    case ${lang_frag} in
1907      ..) ;;
1908      # The odd quoting in the next line works around
1909      # an apparent bug in bash 1.12 on linux.
1910      ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1911      *)
1912        # From the config-lang.in, get $language, $lang_requires, and
1913        # $lang_requires_boot_languages.
1914        language=
1915        lang_requires=
1916        lang_requires_boot_languages=
1917        . ${lang_frag}
1918        for other in ${lang_requires} ${lang_requires_boot_languages}; do
1919          case ,${enable_languages}, in
1920            *,$other,*) ;;
1921            *,all,*) ;;
1922            *,$language,*)
1923              echo " \`$other' language required by \`$language'; enabling" 1>&2
1924              enable_languages="${enable_languages},${other}"
1925              ;;
1926          esac
1927        done
1928        for other in ${lang_requires_boot_languages} ; do
1929          if test "$other" != "c"; then
1930            case ,${enable_stage1_languages}, in
1931              *,$other,*) ;;
1932              *,all,*) ;;
1933              *)
1934                case ,${enable_languages}, in
1935                  *,$language,*)
1936                    echo " '$other' language required by '$language' in stage 1; enabling" 1>&2
1937                    enable_stage1_languages="$enable_stage1_languages,${other}"
1938                    ;;
1939                esac
1940                ;;
1941            esac
1942          fi
1943        done
1944        ;;
1945    esac
1946  done
1947
1948  new_enable_languages=,c,
1949
1950  # If LTO is enabled, add the LTO front end.
1951  if test "$enable_lto" = "yes" ; then
1952    case ,${enable_languages}, in
1953      *,lto,*) ;;
1954      *) enable_languages="${enable_languages},lto" ;;
1955    esac
1956    if test "${build_lto_plugin}" = "yes" ; then
1957      configdirs="$configdirs lto-plugin"
1958    fi
1959  fi
1960
1961  # If we're building an offloading compiler, add the LTO front end.
1962  if test x"$enable_as_accelerator_for" != x ; then
1963    case ,${enable_languages}, in
1964      *,lto,*) ;;
1965      *) enable_languages="${enable_languages},lto" ;;
1966    esac
1967  fi
1968
1969  missing_languages=`echo ",$enable_languages," | sed -e s/,all,/,/ -e s/,c,/,/ `
1970  potential_languages=,c,
1971
1972  enabled_target_libs=
1973  disabled_target_libs=
1974
1975  for lang_frag in ${srcdir}/gcc/*/config-lang.in .. ; do
1976    case ${lang_frag} in
1977      ..) ;;
1978      # The odd quoting in the next line works around
1979      # an apparent bug in bash 1.12 on linux.
1980      ${srcdir}/gcc/[[*]]/config-lang.in) ;;
1981      *)
1982        # From the config-lang.in, get $language, $target_libs,
1983        # $lang_dirs, $boot_language, and $build_by_default
1984        language=
1985        target_libs=
1986        lang_dirs=
1987        subdir_requires=
1988        boot_language=no
1989        build_by_default=yes
1990        . ${lang_frag}
1991        if test x${language} = x; then
1992          echo "${lang_frag} doesn't set \$language." 1>&2
1993          exit 1
1994        fi
1995
1996        if test "$language" = "c++"; then
1997          boot_language=yes
1998        fi
1999
2000        add_this_lang=no
2001        case ,${enable_languages}, in
2002          *,${language},*)
2003            # Language was explicitly selected; include it
2004            # unless it is C, which is enabled by default.
2005            if test "$language" != "c"; then
2006              add_this_lang=yes
2007            fi
2008            ;;
2009          *,all,*)
2010            # 'all' was selected, select it if it is a default language
2011            if test "$language" != "c"; then
2012              add_this_lang=${build_by_default}
2013            fi
2014            ;;
2015        esac
2016
2017        # Disable languages that need other directories if these aren't available.
2018        for i in $subdir_requires; do
2019          test -f "$srcdir/gcc/$i/config-lang.in" && continue
2020          case ,${enable_languages}, in
2021            *,${language},*)
2022              # Specifically requested language; tell them.
2023              AC_MSG_ERROR([The gcc/$i directory contains parts of $language but is missing])
2024              ;;
2025            *)
2026              # Silently disable.
2027              add_this_lang=unsupported
2028              ;;
2029          esac
2030        done
2031
2032        # Disable Ada if no preexisting GNAT is available.
2033        case ,${enable_languages},:${language}:${have_gnat} in
2034          *,${language},*:ada:no)
2035            # Specifically requested language; tell them.
2036            AC_MSG_ERROR([GNAT is required to build $language])
2037            ;;
2038          *:ada:no)
2039            # Silently disable.
2040            add_this_lang=unsupported
2041            ;;
2042        esac
2043
2044        # Disable a language that is unsupported by the target.
2045        case " $unsupported_languages " in
2046          *" $language "*)
2047            add_this_lang=unsupported
2048            ;;
2049        esac
2050
2051        case $add_this_lang in
2052          unsupported)
2053            # Remove language-dependent dirs.
2054            disabled_target_libs="$disabled_target_libs $target_libs"
2055            noconfigdirs="$noconfigdirs $lang_dirs"
2056            ;;
2057          no)
2058            # Remove language-dependent dirs; still show language as supported.
2059            disabled_target_libs="$disabled_target_libs $target_libs"
2060            noconfigdirs="$noconfigdirs $lang_dirs"
2061            potential_languages="${potential_languages}${language},"
2062            ;;
2063          yes)
2064            new_enable_languages="${new_enable_languages}${language},"
2065            potential_languages="${potential_languages}${language},"
2066            missing_languages=`echo "$missing_languages" | sed "s/,$language,/,/"`
2067            enabled_target_libs="$enabled_target_libs $target_libs"
2068            case "${boot_language}:,$enable_stage1_languages," in
2069              yes:* | *:*,$language,* | *:*,yes, | *:*,all,)
2070                # Add to (comma-separated) list of stage 1 languages.
2071                case ",$stage1_languages," in
2072                  *,$language,* | ,yes, | ,all,) ;;
2073                  *) stage1_languages="${stage1_languages}${language}," ;;
2074                esac
2075                # We need to bootstrap any supporting libraries.
2076                bootstrap_target_libs="${bootstrap_target_libs}${target_libs},"
2077                ;;
2078            esac
2079            ;;
2080        esac
2081        ;;
2082    esac
2083  done
2084
2085  # Add target libraries which are only needed for disabled languages
2086  # to noconfigdirs.
2087  if test -n "$disabled_target_libs"; then
2088    for dir in $disabled_target_libs; do
2089      case " $enabled_target_libs " in
2090      *" ${dir} "*) ;;
2091      *) noconfigdirs="$noconfigdirs $dir" ;;
2092      esac
2093    done
2094  fi
2095
2096  AC_ARG_ENABLE(stage1-languages,
2097  [AS_HELP_STRING([[--enable-stage1-languages[=all]]],
2098                  [choose additional languages to build during
2099                  stage1.  Mostly useful for compiler development])],
2100  [case ,${enable_stage1_languages}, in
2101    ,no,|,,)
2102      # Set it to something that will have no effect in the loop below
2103      enable_stage1_languages=c ;;
2104    ,yes,)
2105      enable_stage1_languages=`echo $new_enable_languages | \
2106        sed -e "s/^,//" -e "s/,$//" ` ;;
2107    *,all,*)
2108      enable_stage1_languages=`echo ,$enable_stage1_languages, | \
2109        sed -e "s/,all,/$new_enable_languages/" -e "s/^,//" -e "s/,$//" ` ;;
2110  esac
2111
2112  # Add "good" languages from enable_stage1_languages to stage1_languages,
2113  # while "bad" languages go in missing_languages.  Leave no duplicates.
2114  for i in `echo $enable_stage1_languages | sed 's/,/ /g' `; do
2115    case $potential_languages in
2116      *,$i,*)
2117        case $stage1_languages in
2118          *,$i,*) ;;
2119          *) stage1_languages="$stage1_languages$i," ;;
2120        esac ;;
2121      *)
2122        case $missing_languages in
2123          *,$i,*) ;;
2124          *) missing_languages="$missing_languages$i," ;;
2125        esac ;;
2126     esac
2127  done])
2128
2129  # Remove leading/trailing commas that were added for simplicity
2130  potential_languages=`echo "$potential_languages" | sed -e "s/^,//" -e "s/,$//"`
2131  missing_languages=`echo "$missing_languages" | sed -e "s/^,//" -e "s/,$//"`
2132  stage1_languages=`echo "$stage1_languages" | sed -e "s/^,//" -e "s/,$//"`
2133  new_enable_languages=`echo "$new_enable_languages" | sed -e "s/^,//" -e "s/,$//"`
2134
2135  if test "x$missing_languages" != x; then
2136    AC_MSG_ERROR([
2137The following requested languages could not be built: ${missing_languages}
2138Supported languages are: ${potential_languages}])
2139  fi
2140  if test "x$new_enable_languages" != "x$enable_languages"; then
2141    echo The following languages will be built: ${new_enable_languages}
2142    enable_languages="$new_enable_languages"
2143  fi
2144
2145  AC_SUBST(stage1_languages)
2146  ac_configure_args=`echo " $ac_configure_args" | sed -e "s/ '--enable-languages=[[^ ]]*'//g" -e "s/$/ '--enable-languages="$enable_languages"'/" `
2147fi
2148
2149# Handle --disable-<component> generically.
2150for dir in $configdirs $build_configdirs $target_configdirs ; do
2151  dirname=`echo $dir | sed -e s/target-//g -e s/build-//g -e s/-/_/g`
2152  varname=`echo $dirname | sed -e s/+/_/g`
2153  if eval test x\${enable_${varname}} "=" xno ; then
2154    noconfigdirs="$noconfigdirs $dir"
2155  fi
2156done
2157
2158# Check for Boehm's garbage collector
2159AC_ARG_ENABLE(objc-gc,
2160[AS_HELP_STRING([--enable-objc-gc],
2161                [enable use of Boehm's garbage collector with the
2162                 GNU Objective-C runtime])],
2163[case ,${enable_languages},:${enable_objc_gc}:${noconfigdirs} in
2164  *,objc,*:*:yes:*target-boehm-gc*)
2165    AC_MSG_ERROR([Boehm's garbage collector was requested yet not supported in this configuration])
2166    ;;
2167esac])
2168
2169# Make sure we only build Boehm's garbage collector if required.
2170case ,${enable_languages},:${enable_objc_gc} in
2171  *,objc,*:yes)
2172    # Keep target-boehm-gc if requested for Objective-C.
2173    ;;
2174  *)
2175    # Otherwise remove target-boehm-gc depending on target-libjava.
2176    if echo " ${noconfigdirs} " | grep "target-libjava" >/dev/null 2>&1; then
2177      noconfigdirs="$noconfigdirs target-boehm-gc"
2178    fi
2179    ;;
2180esac
2181
2182# Disable libcilkrts, libitm, libsanitizer, libvtv, liboffloadmic if we're not building C++
2183case ,${enable_languages}, in
2184  *,c++,*)
2185    # Disable libcilkrts, libitm, libsanitizer if we're not building libstdc++
2186    case "${noconfigdirs}" in
2187      *target-libstdc++-v3*)
2188        noconfigdirs="$noconfigdirs target-libcilkrts target-libitm target-libsanitizer"
2189        ;;
2190      *) ;;
2191    esac
2192    ;;
2193  *)
2194    noconfigdirs="$noconfigdirs target-libcilkrts target-liboffloadmic target-libitm target-libsanitizer target-libvtv"
2195    ;;
2196esac
2197
2198# Remove the entries in $skipdirs and $noconfigdirs from $configdirs,
2199# $build_configdirs and $target_configdirs.
2200# If we have the source for $noconfigdirs entries, add them to $notsupp.
2201
2202notsupp=""
2203for dir in . $skipdirs $noconfigdirs ; do
2204  dirname=`echo $dir | sed -e s/target-//g -e s/build-//g`
2205  if test $dir != .  && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2206    configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
2207    if test -r $srcdir/$dirname/configure ; then
2208      if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2209        true
2210      else
2211        notsupp="$notsupp $dir"
2212      fi
2213    fi
2214  fi
2215  if test $dir != .  && echo " ${build_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2216    build_configdirs=`echo " ${build_configdirs} " | sed -e "s/ ${dir} / /"`
2217    if test -r $srcdir/$dirname/configure ; then
2218      if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2219        true
2220      else
2221        notsupp="$notsupp $dir"
2222      fi
2223    fi
2224  fi
2225  if test $dir != . && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2226    target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
2227    if test -r $srcdir/$dirname/configure ; then
2228      if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2229        true
2230      else
2231        notsupp="$notsupp $dir"
2232      fi
2233    fi
2234  fi
2235done
2236
2237# Quietly strip out all directories which aren't configurable in this tree.
2238# This relies on all configurable subdirectories being autoconfiscated, which
2239# is now the case.
2240build_configdirs_all="$build_configdirs"
2241build_configdirs=
2242for i in ${build_configdirs_all} ; do
2243  j=`echo $i | sed -e s/build-//g`
2244  if test -f ${srcdir}/$j/configure ; then
2245    build_configdirs="${build_configdirs} $i"
2246  fi
2247done
2248
2249configdirs_all="$configdirs"
2250configdirs=
2251for i in ${configdirs_all} ; do
2252  if test -f ${srcdir}/$i/configure ; then
2253    configdirs="${configdirs} $i"
2254  fi
2255done
2256
2257target_configdirs_all="$target_configdirs"
2258target_configdirs=
2259for i in ${target_configdirs_all} ; do
2260  j=`echo $i | sed -e s/target-//g`
2261  if test -f ${srcdir}/$j/configure ; then
2262    target_configdirs="${target_configdirs} $i"
2263  fi
2264done
2265
2266# Exclude target-zlib if target-libjava isn't built.
2267case ${target_configdirs} in
2268*target-libjava*)
2269  ;;
2270*)
2271  target_configdirs="`echo ${target_configdirs} | sed -e 's/target-zlib//'`"
2272  ;;
2273esac
2274
2275# libiberty-linker-plugin is special: it doesn't have its own source directory,
2276# so we have to add it after the preceding checks.
2277if test x"$extra_linker_plugin_flags$extra_linker_plugin_configure_flags" != x
2278then
2279  case " $configdirs " in
2280    *" libiberty "*)
2281      # If we can build libiberty, we can also build libiberty-linker-plugin.
2282      configdirs="$configdirs libiberty-linker-plugin"
2283      extra_linker_plugin_configure_flags="$extra_linker_plugin_configure_flags \
2284        --with-libiberty=../libiberty-linker-plugin";;
2285    *)
2286      AC_MSG_ERROR([libiberty missing]);;
2287  esac
2288fi
2289
2290# Sometimes we have special requirements for the host libiberty.
2291extra_host_libiberty_configure_flags=
2292extra_host_zlib_configure_flags=
2293case " $configdirs " in
2294  *" lto-plugin "* | *" libcc1 "*)
2295    # When these are to be built as shared libraries, the same applies to
2296    # libiberty.
2297    extra_host_libiberty_configure_flags=--enable-shared
2298    ;;
2299  *" bfd "*)
2300    # When bfd is to be built as a shared library, the same applies to
2301    # zlib.
2302    if test "$enable_shared" = "yes"; then
2303      extra_host_zlib_configure_flags=--enable-host-shared
2304    fi
2305    ;;
2306esac
2307AC_SUBST(extra_host_libiberty_configure_flags)
2308AC_SUBST(extra_host_zlib_configure_flags)
2309
2310# Produce a warning message for the subdirs we can't configure.
2311# This isn't especially interesting in the Cygnus tree, but in the individual
2312# FSF releases, it's important to let people know when their machine isn't
2313# supported by the one or two programs in a package.
2314
2315if test -n "${notsupp}" && test -z "${norecursion}" ; then
2316  # If $appdirs is non-empty, at least one of those directories must still
2317  # be configured, or we error out.  (E.g., if the gas release supports a
2318  # specified target in some subdirs but not the gas subdir, we shouldn't
2319  # pretend that all is well.)
2320  if test -n "$appdirs" ; then
2321    for dir in $appdirs ; do
2322      if test -r $dir/Makefile.in ; then
2323        if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
2324          appdirs=""
2325          break
2326        fi
2327        if echo " ${target_configdirs} " | grep " target-${dir} " >/dev/null 2>&1; then
2328          appdirs=""
2329          break
2330        fi
2331      fi
2332    done
2333    if test -n "$appdirs" ; then
2334      echo "*** This configuration is not supported by this package." 1>&2
2335      exit 1
2336    fi
2337  fi
2338  # Okay, some application will build, or we don't care to check.  Still
2339  # notify of subdirs not getting built.
2340  echo "*** This configuration is not supported in the following subdirectories:" 1>&2
2341  echo "    ${notsupp}" 1>&2
2342  echo "    (Any other directories should still work fine.)" 1>&2
2343fi
2344
2345case "$host" in
2346  *msdosdjgpp*)
2347    enable_gdbtk=no ;;
2348esac
2349
2350# To find our prefix, in gcc_cv_tool_prefix.
2351ACX_TOOL_DIRS
2352
2353copy_dirs=
2354
2355AC_ARG_WITH([build-sysroot],
2356  [AS_HELP_STRING([--with-build-sysroot=SYSROOT],
2357                  [use sysroot as the system root during the build])],
2358  [if test x"$withval" != x ; then
2359     SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
2360   fi],
2361  [SYSROOT_CFLAGS_FOR_TARGET=])
2362AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
2363
2364AC_ARG_WITH([debug-prefix-map],
2365  [AS_HELP_STRING([--with-debug-prefix-map='A=B C=D ...'],
2366                  [map A to B, C to D ... in debug information])],
2367  [if test x"$withval" != x; then
2368     DEBUG_PREFIX_CFLAGS_FOR_TARGET=
2369     for debug_map in $withval; do
2370       DEBUG_PREFIX_CFLAGS_FOR_TARGET="$DEBUG_PREFIX_CFLAGS_FOR_TARGET -fdebug-prefix-map=$debug_map"
2371     done
2372   fi],
2373  [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
2374AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
2375
2376# During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
2377# might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
2378# might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
2379# We want to ensure that TARGET libraries (which we know are built with
2380# gcc) are built with "-O2 -g", so include those options when setting
2381# CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
2382if test "x$CFLAGS_FOR_TARGET" = x; then
2383  if test "x${is_cross_compiler}" = xyes; then
2384    CFLAGS_FOR_TARGET="-g -O2"
2385  else
2386    CFLAGS_FOR_TARGET=$CFLAGS
2387    case " $CFLAGS " in
2388      *" -O2 "*) ;;
2389      *) CFLAGS_FOR_TARGET="-O2 $CFLAGS_FOR_TARGET" ;;
2390    esac
2391    case " $CFLAGS " in
2392      *" -g "* | *" -g3 "*) ;;
2393      *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
2394    esac
2395  fi
2396fi
2397AC_SUBST(CFLAGS_FOR_TARGET)
2398
2399if test "x$CXXFLAGS_FOR_TARGET" = x; then
2400  if test "x${is_cross_compiler}" = xyes; then
2401    CXXFLAGS_FOR_TARGET="-g -O2"
2402  else
2403    CXXFLAGS_FOR_TARGET=$CXXFLAGS
2404    case " $CXXFLAGS " in
2405      *" -O2 "*) ;;
2406      *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS_FOR_TARGET" ;;
2407    esac
2408    case " $CXXFLAGS " in
2409      *" -g "* | *" -g3 "*) ;;
2410      *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
2411    esac
2412  fi
2413fi
2414AC_SUBST(CXXFLAGS_FOR_TARGET)
2415
2416AC_SUBST(LDFLAGS_FOR_TARGET)
2417
2418# Handle --with-headers=XXX.  If the value is not "yes", the contents of
2419# the named directory are copied to $(tooldir)/sys-include.
2420if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
2421  if test x${is_cross_compiler} = xno ; then
2422    echo 1>&2 '***' --with-headers is only supported when cross compiling
2423    exit 1
2424  fi
2425  if test x"${with_headers}" != xyes ; then
2426    x=${gcc_cv_tool_prefix}
2427    copy_dirs="${copy_dirs} ${with_headers} $x/${target_noncanonical}/sys-include"
2428  fi
2429fi
2430
2431# Handle --with-libs=XXX.  If the value is not "yes", the contents of
2432# the name directories are copied to $(tooldir)/lib.  Multiple directories
2433# are permitted.
2434if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
2435  if test x${is_cross_compiler} = xno ; then
2436    echo 1>&2 '***' --with-libs is only supported when cross compiling
2437    exit 1
2438  fi
2439  if test x"${with_libs}" != xyes ; then
2440    # Copy the libraries in reverse order, so that files in the first named
2441    # library override files in subsequent libraries.
2442    x=${gcc_cv_tool_prefix}
2443    for l in ${with_libs}; do
2444      copy_dirs="$l $x/${target_noncanonical}/lib ${copy_dirs}"
2445    done
2446  fi
2447fi
2448
2449# Set with_gnu_as, with_gnu_ld, and with_system_zlib as appropriate.
2450#
2451# This is done by determining whether or not the appropriate directory
2452# is available, and by checking whether or not specific configurations
2453# have requested that this magic not happen.
2454#
2455# The command line options always override the explicit settings in
2456# configure.ac, and the settings in configure.ac override this magic.
2457#
2458# If the default for a toolchain is to use GNU as and ld, and you don't
2459# want to do that, then you should use the --without-gnu-as and
2460# --without-gnu-ld options for the configure script.  Similarly, if
2461# the default is to use the included zlib and you don't want to do that,
2462# you should use the --with-system-zlib option for the configure script.
2463
2464if test x${use_gnu_as} = x &&
2465   echo " ${configdirs} " | grep " gas " > /dev/null 2>&1 ; then
2466  with_gnu_as=yes
2467  extra_host_args="$extra_host_args --with-gnu-as"
2468fi
2469
2470if test x${use_gnu_ld} = x &&
2471   echo " ${configdirs} " | egrep " (go)?ld " > /dev/null 2>&1 ; then
2472  with_gnu_ld=yes
2473  extra_host_args="$extra_host_args --with-gnu-ld"
2474fi
2475
2476if test x${use_included_zlib} = x &&
2477   echo " ${configdirs} " | grep " zlib " > /dev/null 2>&1 ; then
2478  :
2479else
2480  with_system_zlib=yes
2481  extra_host_args="$extra_host_args --with-system-zlib"
2482fi
2483
2484# If using newlib, add --with-newlib to the extra_host_args so that gcc/configure
2485# can detect this case.
2486
2487if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 ; then
2488  with_newlib=yes
2489  extra_host_args="$extra_host_args --with-newlib"
2490fi
2491
2492# Handle ${copy_dirs}
2493set fnord ${copy_dirs}
2494shift
2495while test $# != 0 ; do
2496  if test -f $2/COPIED && test x"`cat $2/COPIED`" = x"$1" ; then
2497    :
2498  else
2499    echo Copying $1 to $2
2500
2501    # Use the install script to create the directory and all required
2502    # parent directories.
2503    if test -d $2 ; then
2504      :
2505    else
2506      echo >config.temp
2507      ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
2508    fi
2509
2510    # Copy the directory, assuming we have tar.
2511    # FIXME: Should we use B in the second tar?  Not all systems support it.
2512    (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
2513
2514    # It is the responsibility of the user to correctly adjust all
2515    # symlinks.  If somebody can figure out how to handle them correctly
2516    # here, feel free to add the code.
2517
2518    echo $1 > $2/COPIED
2519  fi
2520  shift; shift
2521done
2522
2523# Determine a target-dependent exec_prefix that the installed
2524# gcc will search in.  Keep this list sorted by triplet, with
2525# the *-*-osname triplets last.
2526md_exec_prefix=
2527case "${target}" in
2528  i[[34567]]86-pc-msdosdjgpp*)
2529    md_exec_prefix=/dev/env/DJDIR/bin
2530    ;;
2531  *-*-hpux* | \
2532  *-*-nto-qnx* | \
2533  *-*-solaris2*)
2534    md_exec_prefix=/usr/ccs/bin
2535    ;;
2536esac
2537
2538extra_arflags_for_target=
2539extra_nmflags_for_target=
2540extra_ranlibflags_for_target=
2541target_makefile_frag=/dev/null
2542case "${target}" in
2543  spu-*-*)
2544    target_makefile_frag="config/mt-spu"
2545    ;;
2546  mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
2547    target_makefile_frag="config/mt-sde"
2548    ;;
2549  mipsisa*-*-elfoabi*)
2550    target_makefile_frag="config/mt-mips-elfoabi"
2551    ;;
2552  mips*-*-*linux* | mips*-*-gnu*)
2553    target_makefile_frag="config/mt-mips-gnu"
2554    ;;
2555  nios2-*-elf*)
2556    target_makefile_frag="config/mt-nios2-elf"
2557    ;;
2558  *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
2559    target_makefile_frag="config/mt-gnu"
2560    ;;
2561  *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)
2562    # nm and ar from AIX 4.3 and above require -X32_64 flag to all ar and nm
2563    # commands to handle both 32-bit and 64-bit objects.  These flags are
2564    # harmless if we're using GNU nm or ar.
2565    extra_arflags_for_target=" -X32_64"
2566    extra_nmflags_for_target=" -B -X32_64"
2567    ;;
2568esac
2569
2570alphaieee_frag=/dev/null
2571case $target in
2572  alpha*-*-*)
2573    # This just makes sure to use the -mieee option to build target libs.
2574    # This should probably be set individually by each library.
2575    alphaieee_frag="config/mt-alphaieee"
2576    ;;
2577esac
2578
2579# If --enable-target-optspace always use -Os instead of -O2 to build
2580# the target libraries, similarly if it is not specified, use -Os
2581# on selected platforms.
2582ospace_frag=/dev/null
2583case "${enable_target_optspace}:${target}" in
2584  yes:*)
2585    ospace_frag="config/mt-ospace"
2586    ;;
2587  :d30v-*)
2588    ospace_frag="config/mt-d30v"
2589    ;;
2590  :m32r-* | :d10v-* | :fr30-* | :i?86*-*-elfiamcu)
2591    ospace_frag="config/mt-ospace"
2592    ;;
2593  no:* | :*)
2594    ;;
2595  *)
2596    echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
2597    ;;
2598esac
2599
2600# Some systems (e.g., one of the i386-aix systems the gas testers are
2601# using) don't handle "\$" correctly, so don't use it here.
2602tooldir='${exec_prefix}'/${target_noncanonical}
2603build_tooldir=${tooldir}
2604
2605# Create a .gdbinit file which runs the one in srcdir
2606# and tells GDB to look there for source files.
2607
2608if test -r ${srcdir}/.gdbinit ; then
2609  case ${srcdir} in
2610    .) ;;
2611    *) cat > ./.gdbinit <<EOF
2612# ${NO_EDIT}
2613dir ${srcdir}
2614dir .
2615source ${srcdir}/.gdbinit
2616EOF
2617    ;;
2618  esac
2619fi
2620
2621# Make sure that the compiler is able to generate an executable.  If it
2622# can't, we are probably in trouble.  We don't care whether we can run the
2623# executable--we might be using a cross compiler--we only care whether it
2624# can be created.  At this point the main configure script has set CC.
2625we_are_ok=no
2626echo "int main () { return 0; }" > conftest.c
2627${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
2628if test $? = 0 ; then
2629  if test -s conftest || test -s conftest.exe ; then
2630    we_are_ok=yes
2631  fi
2632fi
2633case $we_are_ok in
2634  no)
2635    echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
2636    echo 1>&2 "*** You must set the environment variable CC to a working compiler."
2637    rm -f conftest*
2638    exit 1
2639    ;;
2640esac
2641rm -f conftest*
2642
2643# Decide which environment variable is used to find dynamic libraries.
2644case "${host}" in
2645  *-*-hpux*) RPATH_ENVVAR=SHLIB_PATH ;;
2646  *-*-darwin*) RPATH_ENVVAR=DYLD_LIBRARY_PATH ;;
2647  *-*-mingw* | *-*-cygwin ) RPATH_ENVVAR=PATH ;;
2648  *) RPATH_ENVVAR=LD_LIBRARY_PATH ;;
2649esac
2650
2651# On systems where the dynamic library environment variable is PATH,
2652# gcc/ will put dynamic libraries into a subdirectory to avoid adding
2653# built executables to PATH.
2654if test "$RPATH_ENVVAR" = PATH; then
2655  GCC_SHLIB_SUBDIR=/shlib
2656else
2657  GCC_SHLIB_SUBDIR=
2658fi
2659
2660# Adjust the toplevel makefile according to whether bootstrap was selected.
2661case $enable_bootstrap in
2662  yes)
2663    bootstrap_suffix=bootstrap
2664    BUILD_CONFIG=bootstrap-debug
2665    ;;
2666  no)
2667    bootstrap_suffix=no-bootstrap
2668    BUILD_CONFIG=
2669    ;;
2670esac
2671
2672AC_MSG_CHECKING(for default BUILD_CONFIG)
2673
2674AC_ARG_WITH([build-config],
2675  [AS_HELP_STRING([--with-build-config='NAME NAME2...'],
2676                  [use config/NAME.mk build configuration])],
2677  [case $with_build_config in
2678   yes) with_build_config= ;;
2679   no) with_build_config= BUILD_CONFIG= ;;
2680   esac])
2681
2682if test "x${with_build_config}" != x; then
2683  BUILD_CONFIG=$with_build_config
2684else
2685  case $BUILD_CONFIG in
2686  bootstrap-debug)
2687    if echo "int f (void) { return 0; }" > conftest.c &&
2688       ${CC} -c conftest.c &&
2689       mv conftest.o conftest.o.g0 &&
2690       ${CC} -c -g conftest.c &&
2691       mv conftest.o conftest.o.g &&
2692       ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
2693      :
2694    else
2695      BUILD_CONFIG=
2696    fi
2697    rm -f conftest.c conftest.o conftest.o.g0 conftest.o.g
2698    ;;
2699  esac
2700fi
2701AC_MSG_RESULT($BUILD_CONFIG)
2702AC_SUBST(BUILD_CONFIG)
2703
2704# Use same top-level configure hooks in libgcc/libstdc++/libvtv.
2705AC_MSG_CHECKING([for --enable-vtable-verify])
2706AC_ARG_ENABLE(vtable-verify,
2707[AS_HELP_STRING([--enable-vtable-verify],
2708                [Enable vtable verification feature])],
2709[case "$enableval" in
2710 yes) enable_vtable_verify=yes ;;
2711 no)  enable_vtable_verify=no ;;
2712 *)   enable_vtable_verify=no;;
2713 esac],
2714[enable_vtable_verify=no])
2715AC_MSG_RESULT($enable_vtable_verify)
2716
2717# Record target_configdirs and the configure arguments for target and
2718# build configuration in Makefile.
2719target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
2720build_configdirs=`echo "${build_configdirs}" | sed -e 's/build-//g'`
2721bootstrap_fixincludes=no
2722
2723# If we are building libgomp, bootstrap it.
2724if echo " ${target_configdirs} " | grep " libgomp " > /dev/null 2>&1 ; then
2725  bootstrap_target_libs=${bootstrap_target_libs}target-libgomp,
2726fi
2727
2728# If we are building libsanitizer and $BUILD_CONFIG contains bootstrap-asan
2729# or bootstrap-ubsan, bootstrap it.
2730if echo " ${target_configdirs} " | grep " libsanitizer " > /dev/null 2>&1; then
2731  case "$BUILD_CONFIG" in
2732    *bootstrap-asan* | *bootstrap-ubsan* )
2733      bootstrap_target_libs=${bootstrap_target_libs}target-libsanitizer,
2734      bootstrap_fixincludes=yes
2735      ;;
2736  esac
2737fi
2738
2739# If we are building libvtv and --enable-vtable-verify, bootstrap it.
2740if echo " ${target_configdirs} " | grep " libvtv " > /dev/null 2>&1 &&
2741   test "$enable_vtable_verify" != no; then
2742  bootstrap_target_libs=${bootstrap_target_libs}target-libvtv,
2743fi
2744
2745# If we are building libmpx, bootstrap it.
2746if echo " ${target_configdirs} " | grep " libmpx " > /dev/null 2>&1; then
2747  bootstrap_target_libs=${bootstrap_target_libs}target-libmpx,
2748fi
2749
2750# Determine whether gdb needs tk/tcl or not.
2751# Use 'maybe' since enable_gdbtk might be true even if tk isn't available
2752# and in that case we want gdb to be built without tk.  Ugh!
2753# In fact I believe gdb is the *only* package directly dependent on tk,
2754# so we should be able to put the 'maybe's in unconditionally and
2755# leave out the maybe dependencies when enable_gdbtk is false.  I'm not
2756# 100% sure that that's safe though.
2757
2758gdb_tk="maybe-all-tcl maybe-all-tk maybe-all-itcl maybe-all-libgui"
2759case "$enable_gdbtk" in
2760  no)
2761    GDB_TK="" ;;
2762  yes)
2763    GDB_TK="${gdb_tk}" ;;
2764  *)
2765    # Only add the dependency on gdbtk when GDBtk is part of the gdb
2766    # distro.  Eventually someone will fix this and move Insight, nee
2767    # gdbtk to a separate directory.
2768    if test -d ${srcdir}/gdb/gdbtk ; then
2769      GDB_TK="${gdb_tk}"
2770    else
2771      GDB_TK=""
2772    fi
2773    ;;
2774esac
2775CONFIGURE_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-configure-/g`
2776INSTALL_GDB_TK=`echo ${GDB_TK} | sed s/-all-/-install-/g`
2777
2778# Strip out unwanted targets.
2779
2780# While at that, we remove Makefiles if we were started for recursive
2781# configuration, so that the top-level Makefile reconfigures them,
2782# like we used to do when configure itself was recursive.
2783
2784# Loop over modules.  We used to use the "$extrasub" feature from Autoconf
2785# but now we're fixing up the Makefile ourselves with the additional
2786# commands passed to AC_CONFIG_FILES.  Use separate variables
2787# extrasub-{build,host,target} not because there is any reason to split
2788# the substitutions up that way, but only to remain below the limit of
2789# 99 commands in a script, for HP-UX sed.
2790# Do not nest @if/@endif pairs, because configure will not warn you at all.
2791
2792case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
2793  yes:yes:*\ gold\ *:*,c++,*) ;;
2794  yes:yes:*\ gold\ *:*)
2795    AC_MSG_ERROR([in a combined tree, bootstrapping with --enable-gold requires c++ in stage1_languages])
2796    ;;
2797esac
2798
2799extrasub_build=
2800for module in ${build_configdirs} ; do
2801  if test -z "${no_recursion}" \
2802     && test -f ${build_subdir}/${module}/Makefile; then
2803    echo 1>&2 "*** removing ${build_subdir}/${module}/Makefile to force reconfigure"
2804    rm -f ${build_subdir}/${module}/Makefile
2805  fi
2806  extrasub_build="$extrasub_build
2807/^@if build-$module\$/d
2808/^@endif build-$module\$/d
2809/^@if build-$module-$bootstrap_suffix\$/d
2810/^@endif build-$module-$bootstrap_suffix\$/d"
2811done
2812extrasub_host=
2813for module in ${configdirs} ; do
2814  if test -z "${no_recursion}"; then
2815    for file in stage*-${module}/Makefile prev-${module}/Makefile ${module}/Makefile; do
2816      if test -f ${file}; then
2817        echo 1>&2 "*** removing ${file} to force reconfigure"
2818        rm -f ${file}
2819      fi
2820    done
2821  fi
2822  case ${module},${bootstrap_fixincludes} in
2823    fixincludes,no) host_bootstrap_suffix=no-bootstrap ;;
2824    *) host_bootstrap_suffix=$bootstrap_suffix ;;
2825  esac
2826  extrasub_host="$extrasub_host
2827/^@if $module\$/d
2828/^@endif $module\$/d
2829/^@if $module-$host_bootstrap_suffix\$/d
2830/^@endif $module-$host_bootstrap_suffix\$/d"
2831done
2832extrasub_target=
2833for module in ${target_configdirs} ; do
2834  if test -z "${no_recursion}" \
2835     && test -f ${target_subdir}/${module}/Makefile; then
2836    echo 1>&2 "*** removing ${target_subdir}/${module}/Makefile to force reconfigure"
2837    rm -f ${target_subdir}/${module}/Makefile
2838  fi
2839
2840  # We only bootstrap target libraries listed in bootstrap_target_libs.
2841  case $bootstrap_target_libs in
2842    *,target-$module,*) target_bootstrap_suffix=$bootstrap_suffix ;;
2843    *) target_bootstrap_suffix=no-bootstrap ;;
2844  esac
2845
2846  extrasub_target="$extrasub_target
2847/^@if target-$module\$/d
2848/^@endif target-$module\$/d
2849/^@if target-$module-$target_bootstrap_suffix\$/d
2850/^@endif target-$module-$target_bootstrap_suffix\$/d"
2851done
2852
2853# Do the final fixup along with target modules.
2854extrasub_target="$extrasub_target
2855/^@if /,/^@endif /d"
2856
2857# Create the serialization dependencies.  This uses a temporary file.
2858
2859AC_ARG_ENABLE([serial-configure],
2860[AS_HELP_STRING([[--enable-serial-[{host,target,build}-]configure]],
2861                [force sequential configuration of
2862                 sub-packages for the host, target or build
2863                 machine, or all sub-packages])])
2864
2865case ${enable_serial_configure} in
2866  yes)
2867    enable_serial_build_configure=yes
2868    enable_serial_host_configure=yes
2869    enable_serial_target_configure=yes
2870    ;;
2871esac
2872
2873# These force 'configure's to be done one at a time, to avoid problems
2874# with contention over a shared config.cache.
2875rm -f serdep.tmp
2876echo '# serdep.tmp' > serdep.tmp
2877olditem=
2878test "x${enable_serial_build_configure}" = xyes &&
2879for item in ${build_configdirs} ; do
2880  case ${olditem} in
2881    "") ;;
2882    *) echo "configure-build-${item}: configure-build-${olditem}" >> serdep.tmp ;;
2883  esac
2884  olditem=${item}
2885done
2886olditem=
2887test "x${enable_serial_host_configure}" = xyes &&
2888for item in ${configdirs} ; do
2889  case ${olditem} in
2890    "") ;;
2891    *) echo "configure-${item}: configure-${olditem}" >> serdep.tmp ;;
2892  esac
2893  olditem=${item}
2894done
2895olditem=
2896test "x${enable_serial_target_configure}" = xyes &&
2897for item in ${target_configdirs} ; do
2898  case ${olditem} in
2899    "") ;;
2900    *) echo "configure-target-${item}: configure-target-${olditem}" >> serdep.tmp ;;
2901  esac
2902  olditem=${item}
2903done
2904serialization_dependencies=serdep.tmp
2905AC_SUBST_FILE(serialization_dependencies)
2906
2907# Base args.  Strip norecursion, cache-file, srcdir, host, build,
2908# target, nonopt, and variable assignments.  These are the ones we
2909# might not want to pass down to subconfigures.  The exception being
2910# --cache-file=/dev/null, which is used to turn off the use of cache
2911# files altogether, and which should be passed on to subconfigures.
2912# Also strip program-prefix, program-suffix, and program-transform-name,
2913# so that we can pass down a consistent program-transform-name.
2914baseargs=
2915tbaseargs=
2916keep_next=no
2917skip_next=no
2918eval "set -- $ac_configure_args"
2919for ac_arg
2920do
2921  if test X"$skip_next" = X"yes"; then
2922    skip_next=no
2923    continue
2924  fi
2925  if test X"$keep_next" = X"yes"; then
2926    case $ac_arg in
2927      *\'*)
2928        ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
2929    esac
2930    baseargs="$baseargs '$ac_arg'"
2931    tbaseargs="$tbaseargs '$ac_arg'"
2932    keep_next=no
2933    continue
2934  fi
2935
2936  # Handle separated arguments.  Based on the logic generated by
2937  # autoconf 2.59.
2938  case $ac_arg in
2939    *=* | --config-cache | -C | -disable-* | --disable-* \
2940      | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
2941      | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
2942      | -with-* | --with-* | -without-* | --without-* | --x)
2943      separate_arg=no
2944      ;;
2945    -*)
2946      separate_arg=yes
2947      ;;
2948    *)
2949      separate_arg=no
2950      ;;
2951  esac
2952
2953  skip_targ=no
2954  case $ac_arg in
2955changequote(,)
2956  --with-* | --without-*)
2957    libopt=`echo "$ac_arg" | sed -e 's,^--[^-_]*[-_],,' -e 's,=.*$,,'`
2958
2959    case $libopt in
2960    *[-_]include)
2961      lib=`echo "$libopt" | sed 's,[-_]include$,,'`
2962      ;;
2963    *[-_]lib)
2964      lib=`echo "$libopt" | sed 's,[-_]lib$,,'`
2965      ;;
2966    *)
2967      lib=$libopt
2968      ;;
2969    esac
2970changequote([,])
2971
2972    case $lib in
2973    mpc | mpfr | gmp | isl)
2974      # If we're processing --with-$lib, --with-$lib-include or
2975      # --with-$lib-lib, for one of the libs above, and target is
2976      # different from host, don't pass the current argument to any
2977      # target library's configure.
2978      if test x$is_cross_compiler = xyes; then
2979        skip_targ=yes
2980      fi
2981      ;;
2982    esac
2983    ;;
2984  esac
2985
2986  case "$ac_arg" in
2987    --cache-file=/dev/null | \
2988    -cache-file=/dev/null )
2989      # Handled here to avoid the test to skip args below.
2990      baseargs="$baseargs '$ac_arg'"
2991      tbaseargs="$tbaseargs '$ac_arg'"
2992      # Assert: $separate_arg should always be no.
2993      keep_next=$separate_arg
2994      ;;
2995    --no*)
2996      continue
2997      ;;
2998    --c* | \
2999    --sr* | \
3000    --ho* | \
3001    --bu* | \
3002    --t* | \
3003    --program-* | \
3004    -cache_file* | \
3005    -srcdir* | \
3006    -host* | \
3007    -build* | \
3008    -target* | \
3009    -program-prefix* | \
3010    -program-suffix* | \
3011    -program-transform-name* )
3012      skip_next=$separate_arg
3013      continue
3014      ;;
3015    -*)
3016      # An option.  Add it.
3017      case $ac_arg in
3018        *\'*)
3019          ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
3020      esac
3021      baseargs="$baseargs '$ac_arg'"
3022      if test X"$skip_targ" = Xno; then
3023        tbaseargs="$tbaseargs '$ac_arg'"
3024      fi
3025      keep_next=$separate_arg
3026      ;;
3027    *)
3028      # Either a variable assignment, or a nonopt (triplet).  Don't
3029      # pass it down; let the Makefile handle this.
3030      continue
3031      ;;
3032  esac
3033done
3034# Remove the initial space we just introduced and, as these will be
3035# expanded by make, quote '$'.
3036baseargs=`echo "x$baseargs" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
3037
3038# Add in --program-transform-name, after --program-prefix and
3039# --program-suffix have been applied to it.  Autoconf has already
3040# doubled dollar signs and backslashes in program_transform_name; we want
3041# the backslashes un-doubled, and then the entire thing wrapped in single
3042# quotes, because this will be expanded first by make and then by the shell.
3043# Also, because we want to override the logic in subdir configure scripts to
3044# choose program_transform_name, replace any s,x,x, with s,y,y,.
3045sed -e "s,\\\\\\\\,\\\\,g; s,','\\\\'',g; s/s,x,x,/s,y,y,/" <<EOF_SED > conftestsed.out
3046${program_transform_name}
3047EOF_SED
3048gcc_transform_name=`cat conftestsed.out`
3049rm -f conftestsed.out
3050baseargs="$baseargs --program-transform-name='${gcc_transform_name}'"
3051tbaseargs="$tbaseargs --program-transform-name='${gcc_transform_name}'"
3052if test "$silent" = yes; then
3053  baseargs="$baseargs --silent"
3054  tbaseargs="$tbaseargs --silent"
3055fi
3056baseargs="$baseargs --disable-option-checking"
3057tbaseargs="$tbaseargs --disable-option-checking"
3058
3059# Record and document user additions to sub configure arguments.
3060AC_ARG_VAR([build_configargs],
3061           [additional configure arguments for build directories])
3062AC_ARG_VAR([host_configargs],
3063           [additional configure arguments for host directories])
3064AC_ARG_VAR([target_configargs],
3065           [additional configure arguments for target directories])
3066
3067# For the build-side libraries, we just need to pretend we're native,
3068# and not use the same cache file.  Multilibs are neither needed nor
3069# desired.  We can't even use the same cache file for all build-side
3070# libraries, as they're compiled differently; some with C, some with
3071# C++ or with different feature-enabling options.
3072build_configargs="$build_configargs --cache-file=./config.cache ${baseargs}"
3073
3074# For host modules, accept cache file option, or specification as blank.
3075case "${cache_file}" in
3076"") # empty
3077  cache_file_option="" ;;
3078/* | [[A-Za-z]]:[[\\/]]* ) # absolute path
3079  cache_file_option="--cache-file=${cache_file}" ;;
3080*) # relative path
3081  cache_file_option="--cache-file=../${cache_file}" ;;
3082esac
3083
3084# Host dirs don't like to share a cache file either, horribly enough.
3085# This seems to be due to autoconf 2.5x stupidity.
3086host_configargs="$host_configargs --cache-file=./config.cache ${extra_host_args} ${baseargs}"
3087
3088target_configargs="$target_configargs ${tbaseargs}"
3089
3090# Passing a --with-cross-host argument lets the target libraries know
3091# whether they are being built with a cross-compiler or being built
3092# native.  However, it would be better to use other mechanisms to make the
3093# sorts of decisions they want to make on this basis.  Please consider
3094# this option to be deprecated.  FIXME.
3095if test x${is_cross_compiler} = xyes ; then
3096  target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
3097fi
3098
3099# Special user-friendly check for native x86_64-linux build, if
3100# multilib is not explicitly enabled.
3101case "$target:$have_compiler:$host:$target:$enable_multilib" in
3102  x86_64-*linux*:yes:$build:$build:)
3103    # Make sure we have a development environment that handles 32-bit
3104    dev64=no
3105    echo "int main () { return 0; }" > conftest.c
3106    ${CC} -m32 -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
3107    if test $? = 0 ; then
3108      if test -s conftest || test -s conftest.exe ; then
3109        dev64=yes
3110      fi
3111    fi
3112    rm -f conftest*
3113    if test x${dev64} != xyes ; then
3114      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.])
3115    fi
3116    ;;
3117esac
3118
3119# Default to --enable-multilib.
3120if test x${enable_multilib} = x ; then
3121  target_configargs="--enable-multilib ${target_configargs}"
3122fi
3123
3124# Pass --with-newlib if appropriate.  Note that target_configdirs has
3125# changed from the earlier setting of with_newlib.
3126if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && test -d ${srcdir}/newlib ; then
3127  target_configargs="--with-newlib ${target_configargs}"
3128fi
3129
3130# Different target subdirs use different values of certain variables
3131# (notably CXX).  Worse, multilibs use *lots* of different values.
3132# Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
3133# it doesn't automatically accept command-line overrides of them.
3134# This means it's not safe for target subdirs to share a cache file,
3135# which is disgusting, but there you have it.  Hopefully this can be
3136# fixed in future.  It's still worthwhile to use a cache file for each
3137# directory.  I think.
3138
3139# Pass the appropriate --build, --host, --target and --cache-file arguments.
3140# We need to pass --target, as newer autoconf's requires consistency
3141# for target_alias and gcc doesn't manage it consistently.
3142target_configargs="--cache-file=./config.cache ${target_configargs}"
3143
3144FLAGS_FOR_TARGET=
3145case " $target_configdirs " in
3146 *" newlib "*)
3147  case " $target_configargs " in
3148  *" --with-newlib "*)
3149   case "$target" in
3150    *-cygwin*)
3151      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/cygwin -isystem $$s/winsup/cygwin/include'
3152      ;;
3153   esac
3154
3155   # If we're not building GCC, don't discard standard headers.
3156   if test -d ${srcdir}/gcc; then
3157     FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -nostdinc'
3158
3159     if test "${build}" != "${host}"; then
3160       # On Canadian crosses, CC_FOR_TARGET will have already been set
3161       # by `configure', so we won't have an opportunity to add -Bgcc/
3162       # to it.  This is right: we don't want to search that directory
3163       # for binaries, but we want the header files in there, so add
3164       # them explicitly.
3165       FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -isystem $$r/$(HOST_SUBDIR)/gcc/include -isystem $$r/$(HOST_SUBDIR)/gcc/include-fixed'
3166
3167       # Someone might think of using the pre-installed headers on
3168       # Canadian crosses, in case the installed compiler is not fully
3169       # compatible with the compiler being built.  In this case, it
3170       # would be better to flag an error than risking having
3171       # incompatible object files being constructed.  We can't
3172       # guarantee that an error will be flagged, but let's hope the
3173       # compiler will do it, when presented with incompatible header
3174       # files.
3175     fi
3176   fi
3177
3178   case "${target}-${is_cross_compiler}" in
3179   i[[3456789]]86-*-linux*-no)
3180      # Here host == target, so we don't need to build gcc,
3181      # so we don't want to discard standard headers.
3182      FLAGS_FOR_TARGET=`echo " $FLAGS_FOR_TARGET " | sed -e 's/ -nostdinc / /'`
3183      ;;
3184   *)
3185      # If we're building newlib, use its generic headers last, but search
3186      # for any libc-related directories first (so make it the last -B
3187      # switch).
3188      FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/newlib/ -isystem $$r/$(TARGET_SUBDIR)/newlib/targ-include -isystem $$s/newlib/libc/include'
3189
3190      # If we're building libgloss, find the startup file, simulator library
3191      # and linker script.
3192      case " $target_configdirs " in
3193        *" libgloss "*)
3194        # Look for startup file, simulator library and maybe linker script.
3195        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$$r/$(TARGET_SUBDIR)/libgloss/'"$libgloss_dir"
3196        # Look for libnosys.a in case the target needs it.
3197        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/libgloss/libnosys'
3198        # Most targets have the linker script in the source directory.
3199        FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$s/libgloss/'"$libgloss_dir"
3200        ;;
3201      esac
3202      ;;
3203   esac
3204   ;;
3205  esac
3206  ;;
3207esac
3208
3209case "$target" in
3210  x86_64-*mingw* | *-w64-mingw*)
3211  # MinGW-w64 does not use newlib, nor does it use winsup. It may,
3212  # however, use a symlink named 'mingw' in ${prefix} .
3213    FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem ${prefix}/${target}/include -isystem ${prefix}/mingw/include'
3214    ;;
3215  *-mingw*)
3216  # MinGW can't be handled as Cygwin above since it does not use newlib.
3217    FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(TARGET_SUBDIR)/winsup/mingw -L$$r/$(TARGET_SUBDIR)/winsup/w32api/lib -isystem $$s/winsup/mingw/include -isystem $$s/winsup/w32api/include'
3218    ;;
3219esac
3220
3221# Allow the user to override the flags for
3222# our build compiler if desired.
3223if test x"${build}" = x"${host}" ; then
3224  CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
3225  CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
3226  LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
3227fi
3228
3229# On Canadian crosses, we'll be searching the right directories for
3230# the previously-installed cross compiler, so don't bother to add
3231# flags for directories within the install tree of the compiler
3232# being built; programs in there won't even run.
3233if test "${build}" = "${host}" && test -d ${srcdir}/gcc; then
3234  # Search for pre-installed headers if nothing else fits.
3235  FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem $(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
3236fi
3237
3238if test "x${use_gnu_ld}" = x &&
3239   echo " ${configdirs} " | grep " ld " > /dev/null ; then
3240  # Arrange for us to find uninstalled linker scripts.
3241  FLAGS_FOR_TARGET=$FLAGS_FOR_TARGET' -L$$r/$(HOST_SUBDIR)/ld'
3242fi
3243
3244# Search for other target-specific linker scripts and such.
3245case "${target}" in
3246  mep*)
3247    FLAGS_FOR_TARGET="$FLAGS_FOR_TARGET -mlibrary"
3248    ;;
3249esac
3250
3251# Makefile fragments.
3252for frag in host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag;
3253do
3254  eval fragval=\$$frag
3255  if test $fragval != /dev/null; then
3256    eval $frag=${srcdir}/$fragval
3257  fi
3258done
3259AC_SUBST_FILE(host_makefile_frag)
3260AC_SUBST_FILE(target_makefile_frag)
3261AC_SUBST_FILE(alphaieee_frag)
3262AC_SUBST_FILE(ospace_frag)
3263
3264# Miscellanea: directories, flags, etc.
3265AC_SUBST(RPATH_ENVVAR)
3266AC_SUBST(GCC_SHLIB_SUBDIR)
3267AC_SUBST(tooldir)
3268AC_SUBST(build_tooldir)
3269AC_SUBST(CONFIGURE_GDB_TK)
3270AC_SUBST(GDB_TK)
3271AC_SUBST(INSTALL_GDB_TK)
3272
3273# Build module lists & subconfigure args.
3274AC_SUBST(build_configargs)
3275AC_SUBST(build_configdirs)
3276
3277# Host module lists & subconfigure args.
3278AC_SUBST(host_configargs)
3279AC_SUBST(configdirs)
3280AC_SUBST(target_configdirs)
3281
3282# Target module lists & subconfigure args.
3283AC_SUBST(target_configargs)
3284
3285
3286# Build tools.
3287AC_SUBST(AR_FOR_BUILD)
3288AC_SUBST(AS_FOR_BUILD)
3289AC_SUBST(CC_FOR_BUILD)
3290AC_SUBST(CFLAGS_FOR_BUILD)
3291AC_SUBST(CXXFLAGS_FOR_BUILD)
3292AC_SUBST(CXX_FOR_BUILD)
3293AC_SUBST(DLLTOOL_FOR_BUILD)
3294AC_SUBST(GCJ_FOR_BUILD)
3295AC_SUBST(GFORTRAN_FOR_BUILD)
3296AC_SUBST(GOC_FOR_BUILD)
3297AC_SUBST(LDFLAGS_FOR_BUILD)
3298AC_SUBST(LD_FOR_BUILD)
3299AC_SUBST(NM_FOR_BUILD)
3300AC_SUBST(RANLIB_FOR_BUILD)
3301AC_SUBST(WINDMC_FOR_BUILD)
3302AC_SUBST(WINDRES_FOR_BUILD)
3303
3304# Generate default definitions for YACC, M4, LEX and other programs that run
3305# on the build machine.  These are used if the Makefile can't locate these
3306# programs in objdir.
3307MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
3308
3309AC_CHECK_PROGS([YACC], ['bison -y' byacc yacc], [$MISSING bison -y])
3310case " $build_configdirs " in
3311  *" bison "*) YACC='$$r/$(BUILD_SUBDIR)/bison/tests/bison -y' ;;
3312esac
3313
3314AC_CHECK_PROGS([BISON], [bison], [$MISSING bison])
3315case " $build_configdirs " in
3316  *" bison "*) BISON='$$r/$(BUILD_SUBDIR)/bison/tests/bison' ;;
3317esac
3318
3319AC_CHECK_PROGS([M4], [gm4 gnum4 m4], [$MISSING m4])
3320case " $build_configdirs " in
3321  *" m4 "*) M4='$$r/$(BUILD_SUBDIR)/m4/m4' ;;
3322esac
3323
3324AC_CHECK_PROGS([LEX], [flex lex], [$MISSING flex])
3325case " $build_configdirs " in
3326  *" flex "*) LEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3327  *" lex "*) LEX='$$r/$(BUILD_SUBDIR)/lex/lex' ;;
3328esac
3329
3330AC_CHECK_PROGS([FLEX], [flex], [$MISSING flex])
3331case " $build_configdirs " in
3332  *" flex "*) FLEX='$$r/$(BUILD_SUBDIR)/flex/flex' ;;
3333esac
3334
3335AC_CHECK_PROGS([MAKEINFO], makeinfo, [$MISSING makeinfo])
3336case " $build_configdirs " in
3337  *" texinfo "*) MAKEINFO='$$r/$(BUILD_SUBDIR)/texinfo/makeinfo/makeinfo' ;;
3338  *)
3339changequote(,)
3340    # For an installed makeinfo, we require it to be from texinfo 4.7 or
3341    # higher, else we use the "missing" dummy.
3342    if ${MAKEINFO} --version \
3343       | egrep 'texinfo[^0-9]*(4\.([7-9]|[1-9][0-9])|[5-9]|[1-9][0-9])' >/dev/null 2>&1; then
3344      :
3345    else
3346      MAKEINFO="$MISSING makeinfo"
3347    fi
3348    ;;
3349changequote([,])
3350esac
3351
3352# FIXME: expect and dejagnu may become build tools?
3353
3354AC_CHECK_PROGS(EXPECT, expect, expect)
3355case " $configdirs " in
3356  *" expect "*)
3357    test $host = $build && EXPECT='$$r/$(HOST_SUBDIR)/expect/expect'
3358    ;;
3359esac
3360
3361AC_CHECK_PROGS(RUNTEST, runtest, runtest)
3362case " $configdirs " in
3363  *" dejagnu "*)
3364    test $host = $build && RUNTEST='$$s/$(HOST_SUBDIR)/dejagnu/runtest'
3365    ;;
3366esac
3367
3368
3369# Host tools.
3370NCN_STRICT_CHECK_TOOLS(AR, ar)
3371NCN_STRICT_CHECK_TOOLS(AS, as)
3372NCN_STRICT_CHECK_TOOLS(DLLTOOL, dlltool)
3373NCN_STRICT_CHECK_TOOLS(LD, ld)
3374NCN_STRICT_CHECK_TOOLS(LIPO, lipo)
3375NCN_STRICT_CHECK_TOOLS(NM, nm)
3376NCN_STRICT_CHECK_TOOLS(RANLIB, ranlib, true)
3377NCN_STRICT_CHECK_TOOLS(STRIP, strip, true)
3378NCN_STRICT_CHECK_TOOLS(WINDRES, windres)
3379NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
3380NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
3381NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
3382NCN_STRICT_CHECK_TOOLS(READELF, readelf)
3383AC_SUBST(CC)
3384AC_SUBST(CXX)
3385AC_SUBST(CFLAGS)
3386AC_SUBST(CXXFLAGS)
3387
3388# Target tools.
3389AC_ARG_WITH([build-time-tools],
3390  [AS_HELP_STRING([--with-build-time-tools=PATH],
3391                  [use given path to find target tools during the build])],
3392  [case x"$withval" in
3393     x/*) ;;
3394     *)
3395       with_build_time_tools=
3396       AC_MSG_WARN([argument to --with-build-time-tools must be an absolute path])
3397       ;;
3398   esac],
3399  [with_build_time_tools=])
3400
3401NCN_STRICT_CHECK_TARGET_TOOLS(CC_FOR_TARGET, cc gcc)
3402NCN_STRICT_CHECK_TARGET_TOOLS(CXX_FOR_TARGET, c++ g++ cxx gxx)
3403NCN_STRICT_CHECK_TARGET_TOOLS(GCC_FOR_TARGET, gcc, ${CC_FOR_TARGET})
3404NCN_STRICT_CHECK_TARGET_TOOLS(GCJ_FOR_TARGET, gcj)
3405NCN_STRICT_CHECK_TARGET_TOOLS(GFORTRAN_FOR_TARGET, gfortran)
3406NCN_STRICT_CHECK_TARGET_TOOLS(GOC_FOR_TARGET, gccgo)
3407
3408ACX_CHECK_INSTALLED_TARGET_TOOL(AR_FOR_TARGET, ar)
3409ACX_CHECK_INSTALLED_TARGET_TOOL(AS_FOR_TARGET, as)
3410ACX_CHECK_INSTALLED_TARGET_TOOL(DLLTOOL_FOR_TARGET, dlltool)
3411ACX_CHECK_INSTALLED_TARGET_TOOL(LD_FOR_TARGET, ld)
3412ACX_CHECK_INSTALLED_TARGET_TOOL(LIPO_FOR_TARGET, lipo)
3413ACX_CHECK_INSTALLED_TARGET_TOOL(NM_FOR_TARGET, nm)
3414ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
3415ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
3416ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
3417ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
3418ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
3419ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
3420ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
3421
3422RAW_CXX_FOR_TARGET="$CXX_FOR_TARGET"
3423
3424GCC_TARGET_TOOL(ar, AR_FOR_TARGET, AR, [binutils/ar])
3425GCC_TARGET_TOOL(as, AS_FOR_TARGET, AS, [gas/as-new])
3426GCC_TARGET_TOOL(cc, CC_FOR_TARGET, CC, [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3427dnl see comments for CXX_FOR_TARGET_FLAG_TO_PASS
3428GCC_TARGET_TOOL(c++, CXX_FOR_TARGET, CXX,
3429                [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],
3430                c++)
3431GCC_TARGET_TOOL(c++ for libstdc++, RAW_CXX_FOR_TARGET, CXX,
3432                [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],
3433                c++)
3434GCC_TARGET_TOOL(dlltool, DLLTOOL_FOR_TARGET, DLLTOOL, [binutils/dlltool])
3435GCC_TARGET_TOOL(gcc, GCC_FOR_TARGET, , [gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/])
3436GCC_TARGET_TOOL(gcj, GCJ_FOR_TARGET, GCJ,
3437                [gcc/gcj -B$$r/$(HOST_SUBDIR)/gcc/], java)
3438GCC_TARGET_TOOL(gfortran, GFORTRAN_FOR_TARGET, GFORTRAN,
3439                [gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/], fortran)
3440GCC_TARGET_TOOL(gccgo, GOC_FOR_TARGET, GOC,
3441                [gcc/gccgo -B$$r/$(HOST_SUBDIR)/gcc/], go)
3442GCC_TARGET_TOOL(ld, LD_FOR_TARGET, LD, [ld/ld-new])
3443GCC_TARGET_TOOL(lipo, LIPO_FOR_TARGET, LIPO)
3444GCC_TARGET_TOOL(nm, NM_FOR_TARGET, NM, [binutils/nm-new])
3445GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
3446GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
3447GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
3448GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
3449GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
3450GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
3451GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])
3452
3453AC_SUBST(FLAGS_FOR_TARGET)
3454AC_SUBST(RAW_CXX_FOR_TARGET)
3455
3456# Certain tools may need extra flags.
3457AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
3458RANLIB_FOR_TARGET=${RANLIB_FOR_TARGET}${extra_ranlibflags_for_target}
3459NM_FOR_TARGET=${NM_FOR_TARGET}${extra_nmflags_for_target}
3460
3461# When building target libraries, except in a Canadian cross, we use
3462# the same toolchain as the compiler we just built.
3463COMPILER_AS_FOR_TARGET='$(AS_FOR_TARGET)'
3464COMPILER_LD_FOR_TARGET='$(LD_FOR_TARGET)'
3465COMPILER_NM_FOR_TARGET='$(NM_FOR_TARGET)'
3466if test $host = $build; then
3467  case " $configdirs " in
3468    *" gcc "*)
3469      COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
3470      COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
3471      COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'${extra_nmflags_for_target}
3472      ;;
3473  esac
3474fi
3475
3476AC_SUBST(COMPILER_AS_FOR_TARGET)
3477AC_SUBST(COMPILER_LD_FOR_TARGET)
3478AC_SUBST(COMPILER_NM_FOR_TARGET)
3479
3480AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3481AC_ARG_ENABLE(maintainer-mode,
3482[AS_HELP_STRING([--enable-maintainer-mode],
3483                [enable make rules and dependencies not useful
3484                 (and sometimes confusing) to the casual installer])],
3485      USE_MAINTAINER_MODE=$enableval,
3486      USE_MAINTAINER_MODE=no)
3487AC_MSG_RESULT($USE_MAINTAINER_MODE)
3488AC_SUBST(MAINTAINER_MODE_TRUE)
3489AC_SUBST(MAINTAINER_MODE_FALSE)
3490if test "$USE_MAINTAINER_MODE" = yes; then
3491  MAINTAINER_MODE_TRUE=
3492  MAINTAINER_MODE_FALSE='#'
3493else
3494  MAINTAINER_MODE_TRUE='#'
3495  MAINTAINER_MODE_FALSE=
3496fi     
3497MAINT=$MAINTAINER_MODE_TRUE
3498AC_SUBST(MAINT)dnl
3499
3500# ---------------------
3501# GCC bootstrap support
3502# ---------------------
3503
3504# Stage specific cflags for build.
3505stage1_cflags="-g"
3506case $build in
3507  vax-*-*)
3508    case ${GCC} in
3509      yes) stage1_cflags="-g -Wa,-J" ;;
3510      *) stage1_cflags="-g -J" ;;
3511    esac ;;
3512esac
3513
3514AC_SUBST(stage1_cflags)
3515
3516# Enable --enable-checking in stage1 of the compiler.
3517AC_ARG_ENABLE(stage1-checking,
3518[AS_HELP_STRING([[--enable-stage1-checking[=all]]],
3519                [choose additional checking for stage1 of the compiler])],
3520[stage1_checking=--enable-checking=${enable_stage1_checking}],
3521[if test "x$enable_checking" = xno || test "x$enable_checking" = x; then
3522  # For --disable-checking or implicit --enable-checking=release, avoid
3523  # setting --enable-checking=gc in the default stage1 checking for LTO
3524  # bootstraps.  See PR62077.
3525  case $BUILD_CONFIG in
3526    *lto*)
3527      stage1_checking=--enable-checking=release,misc,gimple,rtlflag,tree,types;;
3528    *)
3529      stage1_checking=--enable-checking=yes,types;;
3530  esac
3531  if test "x$enable_checking" = x && \
3532     test -d ${srcdir}/gcc && \
3533     test x"`cat ${srcdir}/gcc/DEV-PHASE`" = xexperimental; then
3534    stage1_checking=--enable-checking=yes,types,extra
3535  fi
3536else
3537  stage1_checking=--enable-checking=$enable_checking,types
3538fi])
3539AC_SUBST(stage1_checking)
3540
3541# Enable -Werror in bootstrap stage2 and later.
3542AC_ARG_ENABLE(werror,
3543[AS_HELP_STRING([--enable-werror],
3544                [enable -Werror in bootstrap stage2 and later])], [],
3545[if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
3546  enable_werror=yes
3547else
3548  enable_werror=no
3549fi])
3550case ${enable_werror} in
3551  yes) stage2_werror_flag="--enable-werror-always" ;;
3552  *) stage2_werror_flag="" ;;
3553esac
3554AC_SUBST(stage2_werror_flag)
3555
3556# Enable --enable-host-shared.
3557AC_ARG_ENABLE(host-shared,
3558[AS_HELP_STRING([--enable-host-shared],
3559                [build host code as shared libraries])],
3560[host_shared=$enableval], [host_shared=no])
3561AC_SUBST(host_shared)
3562
3563# PR jit/64780: Require the user to explicitly specify
3564# --enable-host-shared if the jit is enabled, hinting
3565# that they might want to do a separate configure/build of
3566# the jit, to avoid users from slowing down the rest of the
3567# compiler by enabling the jit.
3568if test ${host_shared} = "no" ; then
3569  case "${enable_languages}" in
3570    *jit*)
3571      AC_MSG_ERROR([
3572Enabling language "jit" requires --enable-host-shared.
3573
3574--enable-host-shared typically slows the rest of the compiler down by
3575a few %, so you must explicitly enable it.
3576
3577If you want to build both the jit and the regular compiler, it is often
3578best to do this via two separate configure/builds, in separate
3579directories, to avoid imposing the performance cost of
3580--enable-host-shared on the regular compiler.])
3581      ;;
3582    *)
3583      ;;
3584  esac
3585fi
3586
3587# Specify what files to not compare during bootstrap.
3588
3589compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/*"
3590case "$target" in
3591  hppa*64*-*-hpux*) ;;
3592  hppa*-*-hpux*) compare_exclusions="gcc/cc*-checksum\$(objext) | */libgcc/lib2funcs* | gcc/ada/*tools/*" ;;
3593  powerpc*-ibm-aix*) compare_exclusions="gcc/cc*-checksum\$(objext) | gcc/ada/*tools/* | *libgomp*\$(objext)" ;;
3594esac
3595AC_SUBST(compare_exclusions)
3596
3597AC_CONFIG_FILES([Makefile],
3598  [sed "$extrasub_build" Makefile |
3599   sed "$extrasub_host" |
3600   sed "$extrasub_target" > mf$$
3601   mv -f mf$$ Makefile],
3602  [extrasub_build="$extrasub_build"
3603   extrasub_host="$extrasub_host"
3604   extrasub_target="$extrasub_target"])
3605AC_OUTPUT
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