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configure.ac
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# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
# 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
# 2014, 2015, 2016, 2019, 2022 Free Software Foundation, Inc.
#
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
##############################################################################
### WARNING: this file contains embedded tabs. Do not run untabify on this file.
m4_include(config/acx.m4)
m4_include(config/override.m4)
m4_include(config/proginstall.m4)
m4_include(config/elf.m4)
m4_include(config/ax_cxx_compile_stdcxx.m4)
m4_include(config/gcc-plugin.m4)
m4_include([libtool.m4])
m4_include([ltoptions.m4])
m4_include([ltsugar.m4])
m4_include([ltversion.m4])
m4_include([lt~obsolete.m4])
m4_include([config/isl.m4])
AC_INIT(move-if-change)
AC_DISABLE_OPTION_CHECKING
progname=$0
# if PWD already has a value, it is probably wrong.
if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
# Export original configure arguments for use by sub-configures.
# Quote arguments with shell meta charatcers.
TOPLEVEL_CONFIGURE_ARGUMENTS=
set -- "$progname" "$@"
for ac_arg
do
case "$ac_arg" in
*" "*|*" "*|*[[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\']]*)
ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
# if the argument is of the form -foo=baz, quote the baz part only
ac_arg=`echo "'$ac_arg'" | sed "s/^'\([[-a-zA-Z0-9]]*=\)/\\1'/"` ;;
*) ;;
esac
# Add the quoted argument to the list.
TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS $ac_arg"
done
if test "$silent" = yes; then
TOPLEVEL_CONFIGURE_ARGUMENTS="$TOPLEVEL_CONFIGURE_ARGUMENTS --silent"
fi
# Remove the initial space we just introduced and, as these will be
# expanded by make, quote '$'.
TOPLEVEL_CONFIGURE_ARGUMENTS=`echo "x$TOPLEVEL_CONFIGURE_ARGUMENTS" | sed -e 's/^x *//' -e 's,\\$,$$,g'`
AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
# Find the build, host, and target systems.
ACX_NONCANONICAL_BUILD
ACX_NONCANONICAL_HOST
ACX_NONCANONICAL_TARGET
dnl Autoconf 2.5x and later will set a default program prefix if
dnl --target was used, even if it was the same as --host. Disable
dnl that behavior. This must be done before AC_CANONICAL_SYSTEM
dnl to take effect.
test "$host_noncanonical" = "$target_noncanonical" &&
test "$program_prefix$program_suffix$program_transform_name" = \
NONENONEs,x,x, &&
program_transform_name=s,y,y,
AC_CANONICAL_SYSTEM
AC_ARG_PROGRAM
m4_pattern_allow([^AS_FOR_TARGET$])dnl
m4_pattern_allow([^AS_FOR_BUILD$])dnl
# Get 'install' or 'install-sh' and its variants.
AC_PROG_INSTALL
ACX_PROG_LN
AC_PROG_LN_S
AC_PROG_SED
AC_PROG_AWK
srcpwd=`cd ${srcdir} ; ${PWDCMD-pwd}`
# We pass INSTALL explicitly to sub-makes. Make sure that it is not
# a relative path.
if test "$INSTALL" = "${srcdir}/install-sh -c"; then
INSTALL="${srcpwd}/install-sh -c"
fi
# Set srcdir to "." if that's what it is.
# This is important for multilib support.
pwd=`${PWDCMD-pwd}`
if test "${pwd}" = "${srcpwd}" ; then
srcdir=.
fi
topsrcdir=$srcpwd
extra_host_args=
### To add a new directory to the tree, first choose whether it is a target
### or a host dependent tool. Then put it into the appropriate list
### (library or tools, host or target), doing a dependency sort.
# Subdirs will be configured in the order listed in build_configdirs,
# configdirs, or target_configdirs; see the serialization section below.
# Dependency sorting is only needed when *configuration* must be done in
# a particular order. In all cases a dependency should be specified in
# the Makefile, whether or not it's implicitly specified here.
# Double entries in build_configdirs, configdirs, or target_configdirs may
# cause circular dependencies and break everything horribly.
# these library is used by various programs built for the build
# environment
#
build_libs="build-libiberty build-libcpp"
# these tools are built for the build environment
build_tools="build-texinfo build-flex build-bison build-m4 build-fixincludes"
# these libraries are used by various programs built for the host environment
#f
host_libs="gettext libiberty opcodes bfd readline tcl tk itcl libgui zlib libbacktrace libcpp libcody libdecnumber gmp mpfr mpc isl libiconv libctf libsframe libgrust "
# these tools are built for the host environment
# Note, the powerpc-eabi build depends on sim occurring before gdb in order to
# know that we are building the simulator.
# binutils, gas and ld appear in that order because it makes sense to run
# "make check" in that particular order.
# If --enable-gold is used, "gold" may replace "ld".
host_tools="texinfo flex bison binutils gas ld fixincludes gcc cgen sid sim gdb gdbserver gprof etc expect dejagnu m4 utils guile fastjar gnattools libcc1 gm2tools gotools c++tools"
# these libraries are built for the target environment, and are built after
# the host libraries and the host tools (which may be a cross compiler)
# Note that libiberty is not a target library.
target_libraries="target-libgcc \
target-libbacktrace \
target-libgloss \
target-newlib \
target-libgomp \
target-libatomic \
target-libitm \
target-libstdc++-v3 \
target-libsanitizer \
target-libvtv \
target-libssp \
target-libquadmath \
target-libgfortran \
target-libffi \
target-libobjc \
target-libada \
target-libgm2 \
target-libgo \
target-libgrust \
target-libphobos \
target-zlib"
# these tools are built using the target libraries, and are intended to
# run only in the target environment
#
# note: any program that *uses* libraries that are in the "target_libraries"
# list belongs in this list.
#
target_tools="target-rda"
################################################################################
## All tools belong in one of the four categories, and are assigned above
## We assign ${configdirs} this way to remove all embedded newlines. This
## is important because configure will choke if they ever get through.
## ${configdirs} is directories we build using the host tools.
## ${target_configdirs} is directories we build using the target tools.
configdirs=`echo ${host_libs} ${host_tools}`
target_configdirs=`echo ${target_libraries} ${target_tools}`
build_configdirs=`echo ${build_libs} ${build_tools}`
m4_divert_text([PARSE_ARGS],
[case $srcdir in
*" "*)
m4_pushdef([AS_MESSAGE_LOG_FD], [])dnl
AC_MSG_ERROR([path to source, $srcdir, contains spaces])
m4_popdef([AS_MESSAGE_LOG_FD])dnl
;;
esac
ac_subdirs_all=`cd $srcdir && echo */configure | sed 's,/configure,,g'`
])
################################################################################
srcname="gnu development package"
# This gets set non-empty for some net releases of packages.
appdirs=""
# Define is_cross_compiler to save on calls to 'test'.
is_cross_compiler=
if test x"${host}" = x"${target}" ; then
is_cross_compiler=no
else
is_cross_compiler=yes
fi
# Find the build and target subdir names.
GCC_TOPLEV_SUBDIRS
# Be sure to cover against remnants of an in-tree build.
if test $srcdir != . && test -d $srcdir/host-${host_noncanonical}; then
AC_MSG_ERROR([building out of tree but $srcdir contains host-${host_noncanonical}.
Use a pristine source tree when building in a separate tree])
fi
# Skipdirs are removed silently.
skipdirs=
# Noconfigdirs are removed loudly.
noconfigdirs=""
use_gnu_ld=
# Make sure we don't let GNU ld be added if we didn't want it.
if test x$with_gnu_ld = xno ; then
use_gnu_ld=no
noconfigdirs="$noconfigdirs ld gold"
fi
use_gnu_as=
# Make sure we don't let GNU as be added if we didn't want it.
if test x$with_gnu_as = xno ; then
use_gnu_as=no
noconfigdirs="$noconfigdirs gas"
fi
use_included_zlib=
AC_ARG_WITH(system-zlib,
[AS_HELP_STRING([--with-system-zlib], [use installed libz])])
# Make sure we don't let ZLIB be added if we didn't want it.
if test x$with_system_zlib = xyes ; then
use_included_zlib=no
noconfigdirs="$noconfigdirs zlib"
fi
# Don't compile the bundled readline/libreadline.a if --with-system-readline
# is provided.
if test x$with_system_readline = xyes ; then
noconfigdirs="$noconfigdirs readline"
fi
AC_ARG_WITH(zstd,
[AS_HELP_STRING([--with-zstd], [Support zstd compressed debug sections (default=auto)])])
# some tools are so dependent upon X11 that if we're not building with X,
# it's not even worth trying to configure, much less build, that tool.
case ${with_x} in
yes | "") ;; # the default value for this tree is that X11 is available
no)
skipdirs="${skipdirs} tk itcl libgui"
# We won't be able to build gdbtk without X.
enable_gdbtk=no
;;
*) echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2 ;;
esac
# Some are only suitable for cross toolchains.
# Remove these if host=target.
cross_only="target-libgloss target-newlib target-opcodes"
case $is_cross_compiler in
no) skipdirs="${skipdirs} ${cross_only}" ;;
esac
# If both --with-headers and --with-libs are specified, default to
# --without-newlib.
if test x"${with_headers}" != x && test x"${with_headers}" != xno \
&& test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
if test x"${with_newlib}" = x ; then
with_newlib=no
fi
fi
# Recognize --with-newlib/--without-newlib.
case ${with_newlib} in
no) skipdirs="${skipdirs} target-newlib" ;;
yes) skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'` ;;
esac
AC_ARG_ENABLE(as-accelerator-for,
[AS_HELP_STRING([--enable-as-accelerator-for=ARG],
[build as offload target compiler.
Specify offload host triple by ARG])])
AC_ARG_ENABLE(offload-targets,
[AS_HELP_STRING([--enable-offload-targets=LIST],
[enable offloading to devices from comma-separated LIST of
TARGET[=DIR]. Use optional path to find offload target compiler
during the build])],
[
if test x"$enable_offload_targets" = x; then
AC_MSG_ERROR([no offload targets specified])
fi
], [enable_offload_targets=])
AC_ARG_ENABLE(offload-defaulted,
[AS_HELP_STRING([--enable-offload-defaulted]
[If enabled, configured but not installed offload compilers and
libgomp plugins are silently ignored. Useful for distribution
compilers where those are in separate optional packages.])],
[enable_offload_defaulted=$enableval],
[enable_offload_defaulted=])
# Handle --enable-gold, --enable-ld.
# --disable-gold [--enable-ld]
# Build only ld. Default option.
# --enable-gold [--enable-ld]
# Build both gold and ld. Install gold as "ld.gold", install ld
# as "ld.bfd" and "ld".
# --enable-gold=default [--enable-ld]
# Build both gold and ld. Install gold as "ld.gold" and "ld",
# install ld as "ld.bfd".
# --enable-gold[=default] --disable-ld
# Build only gold, which is then installed as both "ld.gold" and "ld".
# --enable-gold --enable-ld=default
# Build both gold (installed as "ld.gold") and ld (installed as "ld"
# and ld.bfd).
# In other words, ld is default
# --enable-gold=default --enable-ld=default
# Error.
default_ld=
AC_ARG_ENABLE(gold,
[AS_HELP_STRING([[--enable-gold[=ARG]]],
[build gold @<:@ARG={default,yes,no}@:>@])],
ENABLE_GOLD=$enableval,
ENABLE_GOLD=no)
case "${ENABLE_GOLD}" in
yes|default)
# Check for ELF target.
is_elf=no
case "${target}" in
*-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
| *-*-linux* | *-*-gnu* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
| *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* \
| *-*-solaris2* | *-*-nto* | *-*-nacl* | *-*-haiku*)
case "${target}" in
*-*-linux*aout* | *-*-linux*oldld*)
;;
*)
is_elf=yes
;;
esac
esac
if test "$is_elf" = "yes"; then
# Check for target supported by gold.
case "${target}" in
i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
| aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-*)
configdirs="$configdirs gold"
if test x${ENABLE_GOLD} = xdefault; then
default_ld=gold
fi
ENABLE_GOLD=yes
;;
esac
fi
;;
no)
;;
*)
AC_MSG_ERROR([invalid --enable-gold argument])
;;
esac
AC_ARG_ENABLE(ld,
[AS_HELP_STRING([[--enable-ld[=ARG]]],
[build ld @<:@ARG={default,yes,no}@:>@])],
ENABLE_LD=$enableval,
ENABLE_LD=yes)
case "${ENABLE_LD}" in
default)
if test x${default_ld} != x; then
AC_MSG_ERROR([either gold or ld can be the default ld])
fi
;;
yes)
;;
no)
if test x${ENABLE_GOLD} != xyes; then
AC_MSG_WARN([neither ld nor gold are enabled])
fi
configdirs=`echo " ${configdirs} " | sed -e 's/ ld / /'`
;;
*)
AC_MSG_ERROR([invalid --enable-ld argument])
;;
esac
AC_ARG_ENABLE(gprofng,
[AS_HELP_STRING([[--disable-gprofng]], [do not build gprofng])],
enable_gprofng=$enableval,
enable_gprofng=yes)
if test "$enable_gprofng" = "yes"; then
case "${target}" in
*-musl*)
;;
x86_64-*-linux* | i?86-*-linux* | aarch64-*-linux* | riscv64-*-linux*)
configdirs="$configdirs gprofng"
;;
esac
fi
# PR gas/19109
# Decide the default method for compressing debug sections.
# Provide a configure time option to override our default.
AC_ARG_ENABLE(compressed_debug_sections,
[AS_HELP_STRING([--enable-compressed-debug-sections={all,gas,gold,ld,none}],
[Enable compressed debug sections for gas, gold or ld by
default])],
[
if test x"$enable_compressed_debug_sections" = xyes; then
AC_MSG_ERROR([no program with compressed debug sections specified])
fi
], [enable_compressed_debug_sections=])
# Select default compression algorithm.
AC_ARG_ENABLE(default_compressed_debug_sections_algorithm,
[AS_HELP_STRING([--enable-default-compressed-debug-sections-algorithm={zlib,zstd}],
[Default compression algorithm for --enable-compressed-debug-sections.])],
[], [default_compressed_debug_sections_algorithm=])
# Configure extra directories which are host specific
case "${host}" in
*-cygwin*)
configdirs="$configdirs libtermcap" ;;
esac
# A target can indicate whether a language isn't supported for some reason.
# Only spaces may be used in this macro; not newlines or tabs.
unsupported_languages=
# Remove more programs from consideration, based on the host or
# target this usually means that a port of the program doesn't
# exist yet.
case "${host}" in
i[[3456789]]86-*-msdosdjgpp*)
noconfigdirs="$noconfigdirs tcl tk itcl"
;;
esac
# Default to --disable-year2038 until we can handle differences between
# projects that use gnulib (which understands year 2038) and projects that
# do not (like BFD).
AC_ARG_ENABLE(year2038,
AS_HELP_STRING([--enable-year2038],
[enable support for timestamps past the year 2038]),
ENABLE_YEAR2038=$enableval,
ENABLE_YEAR2038=no)
enable_year2038=
if test "${ENABLE_YEAR2038}" = "no" ; then
enable_year2038=no
fi
AC_ARG_ENABLE(libquadmath,
AS_HELP_STRING([--disable-libquadmath],
[do not build libquadmath directory]),
ENABLE_LIBQUADMATH=$enableval,
ENABLE_LIBQUADMATH=yes)
if test "${ENABLE_LIBQUADMATH}" = "no" ; then
noconfigdirs="$noconfigdirs target-libquadmath"
fi
AC_ARG_ENABLE(libquadmath-support,
AS_HELP_STRING([--disable-libquadmath-support],
[disable libquadmath support for Fortran]),
ENABLE_LIBQUADMATH_SUPPORT=$enableval,
ENABLE_LIBQUADMATH_SUPPORT=yes)
enable_libquadmath_support=
if test "${ENABLE_LIBQUADMATH_SUPPORT}" = "no" ; then
enable_libquadmath_support=no
fi
AC_ARG_ENABLE(libada,
[AS_HELP_STRING([--enable-libada], [build libada directory])],
ENABLE_LIBADA=$enableval,
ENABLE_LIBADA=yes)
if test "${ENABLE_LIBADA}" != "yes" ; then
noconfigdirs="$noconfigdirs gnattools"
fi
AC_ARG_ENABLE(libgm2,
[AS_HELP_STRING([--enable-libgm2], [build libgm2 directory])],
ENABLE_LIBGM2=$enableval,
ENABLE_LIBGM2=no)
if test "${ENABLE_LIBGM2}" != "yes" ; then
noconfigdirs="$noconfigdirs gm2tools"
fi
AC_ARG_ENABLE(libssp,
[AS_HELP_STRING([--enable-libssp], [build libssp directory])],
ENABLE_LIBSSP=$enableval,
ENABLE_LIBSSP=yes)
AC_ARG_ENABLE(libstdcxx,
AS_HELP_STRING([--disable-libstdcxx],
[do not build libstdc++-v3 directory]),
ENABLE_LIBSTDCXX=$enableval,
ENABLE_LIBSTDCXX=default)
[if test "${ENABLE_LIBSTDCXX}" = "no" ; then
noconfigdirs="$noconfigdirs target-libstdc++-v3"
fi]
# Enable libgomp by default on hosted POSIX systems, and a few others.
if test x$enable_libgomp = x ; then
case "${target}" in
*-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
;;
*-*-netbsd* | *-*-freebsd* | *-*-openbsd* | *-*-dragonfly*)
;;
*-*-solaris2* | *-*-hpux11*)
;;
*-*-darwin* | *-*-aix*)
;;
nvptx*-*-* | amdgcn*-*-*)
;;
*)
noconfigdirs="$noconfigdirs target-libgomp"
;;
esac
fi
# Disable libatomic on unsupported systems.
if test -d ${srcdir}/libatomic; then
if test x$enable_libatomic = x; then
AC_MSG_CHECKING([for libatomic support])
if (srcdir=${srcdir}/libatomic; \
. ${srcdir}/configure.tgt; \
test -n "$UNSUPPORTED")
then
AC_MSG_RESULT([no])
noconfigdirs="$noconfigdirs target-libatomic"
else
AC_MSG_RESULT([yes])
fi
fi
fi
# Disable libitm on unsupported systems.
if test -d ${srcdir}/libitm; then
if test x$enable_libitm = x; then
AC_MSG_CHECKING([for libitm support])
if (srcdir=${srcdir}/libitm; \
. ${srcdir}/configure.tgt; \
test -n "$UNSUPPORTED")
then
AC_MSG_RESULT([no])
noconfigdirs="$noconfigdirs target-libitm"
else
AC_MSG_RESULT([yes])
fi
fi
fi
# Disable libsanitizer on unsupported systems.
if test -d ${srcdir}/libsanitizer; then
if test x$enable_libsanitizer = x; then
AC_MSG_CHECKING([for libsanitizer support])
if (srcdir=${srcdir}/libsanitizer; \
. ${srcdir}/configure.tgt; \
test -n "$UNSUPPORTED")
then
AC_MSG_RESULT([no])
noconfigdirs="$noconfigdirs target-libsanitizer"
else
AC_MSG_RESULT([yes])
fi
fi
fi
# Disable libvtv on unsupported systems.
if test -d ${srcdir}/libvtv; then
if test x$enable_libvtv = x; then
AC_MSG_CHECKING([for libvtv support])
if (srcdir=${srcdir}/libvtv; \
. ${srcdir}/configure.tgt; \
test "$VTV_SUPPORTED" != "yes")
then
AC_MSG_RESULT([no])
noconfigdirs="$noconfigdirs target-libvtv"
else
AC_MSG_RESULT([yes])
fi
fi
fi
# Disable libquadmath for some systems.
case "${target}" in
avr-*-*)
noconfigdirs="$noconfigdirs target-libquadmath"
;;
# libquadmath is unused on AIX and libquadmath build process use of
# LD_LIBRARY_PATH can break AIX bootstrap.
powerpc-*-aix* | rs6000-*-aix*)
noconfigdirs="$noconfigdirs target-libquadmath"
;;
esac
# Disable libssp for some systems.
case "${target}" in
avr-*-*)
# No hosted I/O support.
noconfigdirs="$noconfigdirs target-libssp"
;;
bpf-*-*)
noconfigdirs="$noconfigdirs target-libssp"
;;
powerpc-*-aix* | rs6000-*-aix*)
noconfigdirs="$noconfigdirs target-libssp"
;;
pru-*-*)
# No hosted I/O support.
noconfigdirs="$noconfigdirs target-libssp"
;;
rl78-*-*)
# libssp uses a misaligned load to trigger a fault, but the RL78
# doesn't fault for those - instead, it gives a build-time error
# for explicit misaligned loads.
noconfigdirs="$noconfigdirs target-libssp"
;;
visium-*-*)
# No hosted I/O support.
noconfigdirs="$noconfigdirs target-libssp"
;;
esac
# Disable libstdc++-v3 for some systems.
# Allow user to override this if they pass --enable-libstdcxx
if test "${ENABLE_LIBSTDCXX}" = "default" ; then
case "${target}" in
*-*-vxworks*)
# VxWorks uses the Dinkumware C++ library.
noconfigdirs="$noconfigdirs target-libstdc++-v3"
;;
amdgcn*-*-*)
# Not ported/fails to build when using newlib.
noconfigdirs="$noconfigdirs target-libstdc++-v3"
;;
arm*-wince-pe*)
# the C++ libraries don't build on top of CE's C libraries
noconfigdirs="$noconfigdirs target-libstdc++-v3"
;;
avr-*-*)
noconfigdirs="$noconfigdirs target-libstdc++-v3"
;;
bpf-*-*)
noconfigdirs="$noconfigdirs target-libstdc++-v3"
;;
ft32-*-*)
noconfigdirs="$noconfigdirs target-libstdc++-v3"
;;
esac
fi
# Disable Ada/GNAT on systems where it is known to not work.
# For testing, you can override this with --enable-languages=ada.
case ,${enable_languages}, in
*,ada,*)
;;
*)
case "${target}" in
amdgcn*-*-* \
| nvptx*-*-* )
unsupported_languages="$unsupported_languages ada"
;;
esac
;;
esac
# Disable C++ on systems where it is known to not work.
# For testing, you can override this with --enable-languages=c++.
case ,${enable_languages}, in
*,c++,*)
;;
*)
case "${target}" in
bpf-*-*)
unsupported_languages="$unsupported_languages c++"
;;
esac
;;
esac
# Disable Objc on systems where it is known to not work.
# For testing, you can override this with --enable-languages=objc.
case ,${enable_languages}, in
*,objc,*)
;;
*)
case "${target}" in
bpf-*-*)
unsupported_languages="$unsupported_languages objc"
;;
esac
;;
esac
# Disable libobjc for some systems where it is known to not work.
case "${target}" in
amdgcn*-*-*)
noconfigdirs="$noconfigdirs target-libobjc"
;;
nvptx*-*-*)
noconfigdirs="$noconfigdirs target-libobjc"
;;
esac
# Disable D on systems where it is known to not work.
# For testing, you can override this with --enable-languages=d.
case ,${enable_languages}, in
*,d,*)
;;
*)
case "${target}" in
bpf-*-*)
unsupported_languages="$unsupported_languages d"
;;
esac
;;
esac
# Disable libphobos on unsupported systems.
# For testing, you can override this with --enable-libphobos.
if test -d ${srcdir}/libphobos; then
if test x$enable_libphobos = x; then
AC_MSG_CHECKING([for libphobos support])
if (srcdir=${srcdir}/libphobos; \
. ${srcdir}/configure.tgt; \
test "$LIBPHOBOS_SUPPORTED" != "yes")
then
AC_MSG_RESULT([no])
noconfigdirs="$noconfigdirs target-libphobos"
else
AC_MSG_RESULT([yes])
fi
fi
fi
# Disable Fortran for some systems.
case "${target}" in
mmix-*-*)
# See <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00572.html>.
unsupported_languages="$unsupported_languages fortran"
;;
bpf-*-*)
unsupported_languages="$unsupported_languages fortran"
;;
esac
# Disable libffi for some systems.
case "${target}" in
powerpc-*-darwin*)
;;
i[[3456789]]86-*-darwin*)
;;
x86_64-*-darwin[[912]]*)
;;
*-*-darwin*)
noconfigdirs="$noconfigdirs target-libffi"
;;
*-*-netware*)
noconfigdirs="$noconfigdirs target-libffi"
;;
*-*-phoenix*)
noconfigdirs="$noconfigdirs target-libffi"
;;
*-*-rtems*)
noconfigdirs="$noconfigdirs target-libffi"
;;
*-*-tpf*)
noconfigdirs="$noconfigdirs target-libffi"
;;
*-*-uclinux*)
noconfigdirs="$noconfigdirs target-libffi"
;;
*-*-vxworks*)
noconfigdirs="$noconfigdirs target-libffi"
;;
aarch64*-*-freebsd*)
noconfigdirs="$noconfigdirs target-libffi"
;;
alpha*-*-*vms*)
noconfigdirs="$noconfigdirs target-libffi"
;;
amdgcn*-*-*)
noconfigdirs="$noconfigdirs target-libffi"
;;
arm*-*-freebsd*)
noconfigdirs="$noconfigdirs target-libffi"
;;
arm-wince-pe)
noconfigdirs="$noconfigdirs target-libffi"
;;
arm*-*-symbianelf*)
noconfigdirs="$noconfigdirs target-libffi"
;;
bpf-*-*)
noconfigdirs="$noconfigdirs target-libffi"
;;
cris-*-* | crisv32-*-*)
case "${target}" in
*-*-linux*)
;;
*) # See PR46792 regarding target-libffi.
noconfigdirs="$noconfigdirs target-libffi";;
esac
;;
hppa*64*-*-hpux*)
noconfigdirs="$noconfigdirs target-libffi"
;;
hppa*-hp-hpux11*)
;;
hppa*-*-hpux*)
noconfigdirs="$noconfigdirs target-libffi"
;;
ia64*-*-*vms*)
noconfigdirs="$noconfigdirs target-libffi"
;;
i[[3456789]]86-w64-mingw*)
noconfigdirs="$noconfigdirs target-libffi"
;;
i[[3456789]]86-*-mingw*)
noconfigdirs="$noconfigdirs target-libffi"
;;
x86_64-*-mingw*)
noconfigdirs="$noconfigdirs target-libffi"
;;
mmix-*-*)
noconfigdirs="$noconfigdirs target-libffi"
;;
nvptx*-*-*)
noconfigdirs="$noconfigdirs target-libffi"
;;
powerpc-*-aix*)
;;
rs6000-*-aix*)
;;
ft32-*-*)
noconfigdirs="$noconfigdirs target-libffi"
;;
*-*-lynxos*)
noconfigdirs="$noconfigdirs target-libffi"
;;
esac
# Disable the go frontend on systems where it is known to not work. Please keep
# this in sync with contrib/config-list.mk.
case "${target}" in
*-*-darwin* | *-*-cygwin* | *-*-mingw* | bpf-* )
unsupported_languages="$unsupported_languages go"
;;
esac
# Only allow gdbserver on some systems.
if test -d ${srcdir}/gdbserver; then
if test x$enable_gdbserver = x; then
AC_MSG_CHECKING([for gdbserver support])
if (srcdir=${srcdir}/gdbserver; \
. ${srcdir}/configure.srv; \
test -n "$UNSUPPORTED")
then
AC_MSG_RESULT([no])
noconfigdirs="$noconfigdirs gdbserver"
else
AC_MSG_RESULT([yes])
fi
fi
fi
# Disable libgo for some systems where it is known to not work.
# For testing, you can easily override this with --enable-libgo.
if test x$enable_libgo = x; then
case "${target}" in
*-*-darwin*)
# PR 46986
noconfigdirs="$noconfigdirs target-libgo"
;;
*-*-cygwin* | *-*-mingw*)
noconfigdirs="$noconfigdirs target-libgo"
;;
amdgcn*-*-*)
noconfigdirs="$noconfigdirs target-libgo"
;;
bpf-*-*)
noconfigdirs="$noconfigdirs target-libgo"
;;
nvptx*-*-*)
noconfigdirs="$noconfigdirs target-libgo"
;;
esac
fi
# Default libgloss CPU subdirectory.
libgloss_dir="$target_cpu"
case "${target}" in
sh*-*-pe|mips*-*-pe|*arm-wince-pe)
libgloss_dir=wince
;;
aarch64*-*-* )
libgloss_dir=aarch64
;;
arm*-*-*)
libgloss_dir=arm
;;
cris-*-* | crisv32-*-*)
libgloss_dir=cris
;;
kvx-*-elf)
libgloss_dir=kvx-elf
;;
kvx-*-mbr)
libgloss_dir=kvx-mbr
;;
kvx-*-cos)
libgloss_dir=kvx-cos
;;
hppa*-*-*)
libgloss_dir=pa
;;
i[[3456789]]86-*-*)
libgloss_dir=i386
;;
loongarch*-*-*)
libgloss_dir=loongarch
;;
m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
libgloss_dir=m68hc11
;;
m68*-*-* | fido-*-*)
libgloss_dir=m68k
;;
mips*-*-*)
libgloss_dir=mips
;;
powerpc*-*-*)
libgloss_dir=rs6000
;;
pru-*-*)
libgloss_dir=pru
;;
sparc*-*-*)
libgloss_dir=sparc
;;
esac
# Disable newlib and libgloss for various target OSes.
case "${target}" in
alpha*-dec-osf*)
noconfigdirs="$noconfigdirs target-newlib target-libgloss"
;;
i[[3456789]]86-*-linux*)
# This section makes it possible to build newlib natively on linux.
# If we are using a cross compiler then don't configure newlib.
if test x${is_cross_compiler} != xno ; then
noconfigdirs="$noconfigdirs target-newlib"
fi
noconfigdirs="$noconfigdirs target-libgloss"
# If we are not using a cross compiler, do configure newlib.
# Note however, that newlib will only be configured in this situation
# if the --with-newlib option has been given, because otherwise
# 'target-newlib' will appear in skipdirs.
;;
i[[3456789]]86-*-rdos*)
noconfigdirs="$noconfigdirs target-newlib target-libgloss"
;;
sh*-*-pe|mips*-*-pe|arm-wince-pe)
noconfigdirs="$noconfigdirs target-newlib target-libgloss"
;;
sparc-*-sunos4*)
noconfigdirs="$noconfigdirs target-newlib target-libgloss"
;;
bpf-*-*)
noconfigdirs="$noconfigdirs target-newlib target-libgloss"
;;
*-*-aix*)