gcc/libstdc++-v3/configure.ac

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# Process this file with autoreconf to produce a configure script.
AC_PREREQ(2.59)
AC_INIT(package-unused, version-unused,, libstdc++)
AC_CONFIG_SRCDIR(src/ios.cc)
AC_CONFIG_HEADER(config.h)
# This works around the fact that libtool configuration may change LD
# for this particular configuration, but some shells, instead of
# keeping the changes in LD private, export them just because LD is
# exported. Only used at the end of this file.
### am handles this now? ORIGINAL_LD_FOR_MULTILIBS=$LD
# For libtool versioning info, format is CURRENT:REVISION:AGE
libtool_VERSION=6:10:0
AC_SUBST(libtool_VERSION)
# Find the rest of the source tree framework.
AM_ENABLE_MULTILIB(, ..)
# Gets build, host, target, *_vendor, *_cpu, *_os, etc.
#
# You will slowly go insane if you do not grok the following fact: when
# building v3 as part of the compiler, the top-level /target/ becomes the
# library's /host/. configure then causes --target to default to --host,
# exactly like any other package using autoconf. Therefore, 'target' and
# 'host' will always be the same. This makes sense both for native and
# cross compilers, just think about it for a little while. :-)
#
# Also, if v3 is being configured as part of a cross compiler, the top-level
# configure script will pass the "real" host as $with_cross_host.
#
# Do not delete or change the following two lines. For why, see
# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
AC_CANONICAL_SYSTEM
target_alias=${target_alias-$host_alias}
# Handy for debugging:
#AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5
if test "$build" != "$host"; then
# We are being configured with some form of cross compiler.
GLIBCXX_IS_NATIVE=false
case "$host","$target" in
# Darwin crosses can use the host system's libraries and headers,
# because of the fat library support. Of course, it must be the
# same version of Darwin on both sides. Allow the user to
# just say --target=foo-darwin without a version number to mean
# "the version on this system".
*-*-darwin*,*-*-darwin*)
hostos=`echo $host | sed 's/.*-darwin/darwin/'`
targetos=`echo $target | sed 's/.*-darwin/darwin/'`
if test $hostos = $targetos -o $targetos = darwin ; then
GLIBCXX_IS_NATIVE=true
fi
;;
*)
GCC_NO_EXECUTABLES
;;
esac
else
GLIBCXX_IS_NATIVE=true
fi
# Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the
# following is magically included in AUTOMAKE_OPTIONS in each Makefile.am.
# 1.x: minimum required version
# no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch
# of other PACKAGE_* variables will, however, and there's nothing
# we can do about that; they come from AC_INIT).
# foreign: we don't follow the normal rules for GNU packages (no COPYING
# file in the top srcdir, etc, etc), so stop complaining.
# no-dependencies: turns off auto dependency generation (just for now)
# -Wall: turns on all automake warnings...
# -Wno-portability: ...except this one, since GNU make is now required.
AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dependencies -Wall -Wno-portability -Wno-override])
AH_TEMPLATE(PACKAGE, [Name of package])
AH_TEMPLATE(VERSION, [Version number of package])
# Runs configure.host, finds CC, CXX, and assorted other critical bits. Sets
# up critical shell variables.
GLIBCXX_CONFIGURE
AC_LIBTOOL_DLOPEN
AM_PROG_LIBTOOL
AC_SUBST(enable_shared)
AC_SUBST(enable_static)
# Possibly disable most of the library.
## TODO: Consider skipping unncessary tests altogether in this case, rather
## than just ignoring the results. Faster /and/ more correct, win win.
GLIBCXX_ENABLE_HOSTED
# Enable compiler support that doesn't require linking.
GLIBCXX_ENABLE_SJLJ_EXCEPTIONS
GLIBCXX_ENABLE_PCH($is_hosted)
# Enable all the variable C++ runtime options that doesn't require linking.
GLIBCXX_ENABLE_CSTDIO
GLIBCXX_ENABLE_CLOCALE
GLIBCXX_ENABLE_ALLOCATOR
GLIBCXX_ENABLE_CHEADERS($c_model) dnl c_model from configure.host
GLIBCXX_ENABLE_LONG_LONG([yes])
GLIBCXX_ENABLE_WCHAR_T([yes])
GLIBCXX_ENABLE_C99([yes])
GLIBCXX_ENABLE_CONCEPT_CHECKS([no])
GLIBCXX_ENABLE_DEBUG_FLAGS(["-g3 -O0"])
GLIBCXX_ENABLE_DEBUG([no])
GLIBCXX_ENABLE_PARALLEL
GLIBCXX_ENABLE_CXX_FLAGS
GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING([no])
# Checks for operating systems support that don't require linking.
GLIBCXX_CHECK_SYSTEM_ERROR
# No surprises, no surprises...
GLIBCXX_ENABLE_THREADS
GLIBCXX_ENABLE_ATOMIC_BUILTINS
if test $atomicity_dir = cpu/generic/atomicity_mutex ; then
AC_MSG_WARN([No native atomic operations are provided for this platform.])
if test $target_thread_file = single; then
AC_MSG_WARN([They cannot be faked when thread support is disabled.])
AC_MSG_WARN([Thread-safety of certain classes is not guaranteed.])
else
AC_MSG_WARN([They will be faked using a mutex.])
AC_MSG_WARN([Performance of certain classes will degrade as a result.])
fi
fi
GLIBCXX_CHECK_COMPILER_FEATURES
if $GLIBCXX_IS_NATIVE; then
# We can do more elaborate tests that assume a working linker.
CANADIAN=no
# Check for available headers.
AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h \
sys/types.h sys/ipc.h sys/sem.h])
GLIBCXX_CHECK_LINKER_FEATURES
GLIBCXX_CHECK_MATH_SUPPORT
GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT
GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT
GLIBCXX_CHECK_STDLIB_SUPPORT
# For showmanyc_helper().
AC_CHECK_HEADERS(sys/ioctl.h sys/filio.h)
GLIBCXX_CHECK_POLL
GLIBCXX_CHECK_S_ISREG_OR_S_IFREG
# For xsputn_2().
AC_CHECK_HEADERS(sys/uio.h)
GLIBCXX_CHECK_WRITEV
# For the __streamoff_base_type typedef.
GLIBCXX_CHECK_INT64_T
# For LFS support.
GLIBCXX_CHECK_LFS
# For C99 support to TR1.
GLIBCXX_CHECK_C99_TR1
# For dev/random and dev/urandom for TR1.
GLIBCXX_CHECK_RANDOM_TR1
# For TLS support.
GCC_CHECK_TLS
# For _Unwind_GetIPInfo.
GCC_CHECK_UNWIND_GETIPINFO
AC_LC_MESSAGES
AC_TRY_COMPILE(
[#include <setjmp.h>],
[sigjmp_buf env;
while (! sigsetjmp (env, 1))
siglongjmp (env, 1);
],
[AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available.])])
AC_FUNC_MMAP
# For iconv support.
AM_ICONV
else
# This lets us hard-code the functionality we know we'll have in the cross
# target environment. "Let" is a sugar-coated word placed on an especially
# dull and tedious hack, actually.
#
# Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros
# that involve linking, can't be used:
# "cannot open sim-crt0.o"
# "cannot open crt0.o"
# etc. All this is because there currently exists no unified, consistent
# way for top level CC information to be passed down to target directories:
# newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc.
# When all of that is done, all of this hokey, excessive AC_DEFINE junk for
# crosses can be removed.
# If Canadian cross, then don't pick up tools from the build directory.
# Used only in GLIBCXX_EXPORT_INCLUDES.
if test -n "$with_cross_host" &&
test x"$build_alias" != x"$with_cross_host" &&
test x"$build" != x"$target";
then
CANADIAN=yes
else
CANADIAN=no
fi
# Construct crosses by hand, eliminating bits that need ld...
# GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT
# GLIBCXX_CHECK_MATH_SUPPORT
# First, test for "known" system libraries. We may be using newlib even
# on a hosted environment.
if test "x${with_newlib}" = "xyes"; then
os_include_dir="os/newlib"
AC_DEFINE(HAVE_HYPOT)
# GLIBCXX_CHECK_STDLIB_SUPPORT
AC_DEFINE(HAVE_STRTOF)
# AC_FUNC_MMAP
AC_DEFINE(HAVE_MMAP)
AC_DEFINE(HAVE_ACOSF)
AC_DEFINE(HAVE_ASINF)
AC_DEFINE(HAVE_ATAN2F)
AC_DEFINE(HAVE_ATANF)
AC_DEFINE(HAVE_CEILF)
AC_DEFINE(HAVE_COPYSIGN)
AC_DEFINE(HAVE_COPYSIGNF)
AC_DEFINE(HAVE_COSF)
AC_DEFINE(HAVE_COSHF)
AC_DEFINE(HAVE_EXPF)
AC_DEFINE(HAVE_FABSF)
AC_DEFINE(HAVE_FLOORF)
AC_DEFINE(HAVE_FMODF)
AC_DEFINE(HAVE_FREXPF)
AC_DEFINE(HAVE_LDEXPF)
AC_DEFINE(HAVE_LOG10F)
AC_DEFINE(HAVE_LOGF)
AC_DEFINE(HAVE_MODFF)
AC_DEFINE(HAVE_POWF)
AC_DEFINE(HAVE_SINF)
AC_DEFINE(HAVE_SINHF)
AC_DEFINE(HAVE_SQRTF)
AC_DEFINE(HAVE_TANF)
AC_DEFINE(HAVE_TANHF)
AC_DEFINE(HAVE_S_ISREG)
AC_DEFINE(HAVE_S_IFREG)
AC_DEFINE(HAVE_ICONV)
else
GLIBCXX_CROSSCONFIG
fi
# At some point, we should differentiate between architectures
# like x86, which have long double versions, and alpha/powerpc/etc.,
# which don't. For the time being, punt.
if test x"long_double_math_on_this_cpu" = x"yes"; then
AC_DEFINE(HAVE_ACOSL)
AC_DEFINE(HAVE_ASINL)
AC_DEFINE(HAVE_ATAN2L)
AC_DEFINE(HAVE_ATANL)
AC_DEFINE(HAVE_CEILL)
AC_DEFINE(HAVE_COPYSIGNL)
AC_DEFINE(HAVE_COSL)
AC_DEFINE(HAVE_COSHL)
AC_DEFINE(HAVE_EXPL)
AC_DEFINE(HAVE_FABSL)
AC_DEFINE(HAVE_FLOORL)
AC_DEFINE(HAVE_FMODL)
AC_DEFINE(HAVE_FREXPL)
AC_DEFINE(HAVE_LDEXPL)
AC_DEFINE(HAVE_LOG10L)
AC_DEFINE(HAVE_LOGL)
AC_DEFINE(HAVE_MODFL)
AC_DEFINE(HAVE_POWL)
AC_DEFINE(HAVE_SINCOSL)
AC_DEFINE(HAVE_SINL)
AC_DEFINE(HAVE_SINHL)
AC_DEFINE(HAVE_SQRTL)
AC_DEFINE(HAVE_TANL)
AC_DEFINE(HAVE_TANHL)
fi
# Assume we have _Unwind_GetIPInfo for cross-compiles.
AC_DEFINE(HAVE_GETIPINFO)
fi
# This depends on GLIBCXX CHECK_LINKER_FEATURES, but without it assumes no.
GLIBCXX_ENABLE_SYMVERS([yes])
GLIBCXX_ENABLE_VISIBILITY([yes])
ac_ldbl_compat=no
case "$target" in
powerpc*-*-linux* | \
powerpc*-*-gnu* | \
sparc*-*-linux* | \
s390*-*-linux* | \
alpha*-*-linux*)
AC_TRY_COMPILE(, [
#if !defined __LONG_DOUBLE_128__ || (defined(__sparc__) && defined(__arch64__))
#error no need for long double compatibility
#endif
], [ac_ldbl_compat=yes], [ac_ldbl_compat=no])
if test "$ac_ldbl_compat" = yes; then
AC_DEFINE([_GLIBCXX_LONG_DOUBLE_COMPAT],1,
[Define if compatibility should be provided for -mlong-double-64.])
port_specific_symbol_files="\$(top_srcdir)/config/os/gnu-linux/ldbl-extra.ver"
fi
esac
GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_COMPAT, test $ac_ldbl_compat = yes)
# This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE.
GLIBCXX_CONFIGURE_TESTSUITE
# Propagate the target-specific source directories through the build chain.
ATOMICITY_SRCDIR=config/${atomicity_dir}
ATOMIC_WORD_SRCDIR=config/${atomic_word_dir}
ATOMIC_FLAGS=${atomic_flags}
CPU_DEFINES_SRCDIR=config/${cpu_defines_dir}
OS_INC_SRCDIR=config/${os_include_dir}
ERROR_CONSTANTS_SRCDIR=config/${error_constants_dir}
ABI_TWEAKS_SRCDIR=config/${abi_tweaks_dir}
AC_SUBST(ATOMICITY_SRCDIR)
AC_SUBST(ATOMIC_WORD_SRCDIR)
AC_SUBST(ATOMIC_FLAGS)
AC_SUBST(CPU_DEFINES_SRCDIR)
AC_SUBST(ABI_TWEAKS_SRCDIR)
AC_SUBST(OS_INC_SRCDIR)
AC_SUBST(ERROR_CONSTANTS_SRCDIR)
# Determine cross-compile flags and AM_CONDITIONALs.
#AC_SUBST(GLIBCXX_IS_NATIVE)
#AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes)
# from GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT:
#AM_CONDITIONAL(GLIBCXX_BUILD_LIBMATH, test $need_libmath = yes)
GLIBCXX_EVALUATE_CONDITIONALS
AC_CACHE_SAVE
if test ${multilib} = yes; then
multilib_arg="--enable-multilib"
else
multilib_arg=
fi
# Export all the install information.
GLIBCXX_EXPORT_INSTALL_INFO
# Export all the include and flag information to Makefiles.
GLIBCXX_EXPORT_INCLUDES
GLIBCXX_EXPORT_FLAGS
if test "$enable_shared" = yes; then
LIBSUPCXX_PICFLAGS="-prefer-pic"
else
LIBSUPCXX_PICFLAGS=
fi
AC_SUBST(LIBSUPCXX_PICFLAGS)
dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros,
dnl which can all be called multiple times as needed, plus one (different)
dnl AC_OUTPUT macro. This one lists the files to be created:
AC_CONFIG_FILES( \
Makefile \
AC_FOREACH([DIR], glibcxx_SUBDIRS, [DIR/Makefile ])
)
AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags])
dnl These commands are run at the end of config.status:
AC_CONFIG_COMMANDS([default],
[if test -n "$CONFIG_FILES"; then
# Multilibs need MULTISUBDIR defined correctly in certain makefiles so
# that multilib installs will end up installed in the correct place.
# The testsuite needs it for multilib-aware ABI baseline files.
# To work around this not being passed down from config-ml.in ->
# srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
# append it here. Only modify Makefiles that have just been created.
#
# Also, get rid of this simulated-VPATH thing that automake does.
cat > vpsed << \_EOF
s!`test -f '$<' || echo '$(srcdir)/'`!!
_EOF
for i in $SUBDIRS; do
case $CONFIG_FILES in
*${i}/Makefile*)
#echo "Adding MULTISUBDIR to $i/Makefile"
sed -f vpsed $i/Makefile > tmp
grep '^MULTISUBDIR =' Makefile >> tmp
mv tmp $i/Makefile
;;
esac
done
rm vpsed
fi
(cd include && ${MAKE-make})
],
[
# Variables needed in config.status (file generation) which aren't already
# passed by autoconf.
SUBDIRS="$SUBDIRS"
])
dnl And this actually makes things happen:
AC_OUTPUT