# Process this file with autoconf to produce a configure script, like so:
# aclocal && autoconf && autoheader && automake
AC_PREREQ(2.13)
AC_INIT(src/ios.cc)
PACKAGE=libstdc++
AC_SUBST(PACKAGE)
# For typical GNU versioning info, format is MAJOR.MINOR.MICRO
release_VERSION=3.1.0
AC_SUBST(release_VERSION)
# For libtool versioning info, format is CURRENT:REVISION:AGE
libtool_VERSION=4:0:0
AC_SUBST(libtool_VERSION)
# Gets build, host, target, *_vendor, *_cpu, *_os, etc.
# AC 2.5x sets target_alias iff the user specified --target, but we use it
# everywhere, so we set it here just to be sure. In AC 2.13
# AC_CANONICAL_TARGET was known as AC_CANONICAL_SYSTEM.
AC_CANONICAL_SYSTEM
target_alias=${target_alias-$target}
AC_SUBST(target_alias)
AM_INIT_AUTOMAKE($PACKAGE, $release_VERSION)
AM_CONFIG_HEADER(config.h)
# Runs configure.host and configure.target, as well as finds CC, CXX
# and assorted other critical bits. Have to run this before the
# GLIBCPP_ENABLE_* macros below.
GLIBCPP_CONFIGURE(.)
AC_LIBTOOL_DLOPEN
AM_PROG_LIBTOOL
AC_SUBST(enable_shared)
AC_SUBST(enable_static)
# Check for c++ or library specific bits that don't require linking.
#GLIBCPP_CHECK_COMPILER_VERSION
GLIBCPP_CHECK_GNU_MAKE
# Enable all the variable C++ stuff. C_MBCHAR must come early.
GLIBCPP_ENABLE_DEBUG($USE_MAINTAINER_MODE)
GLIBCPP_ENABLE_CSTDIO
GLIBCPP_ENABLE_CLOCALE
GLIBCPP_ENABLE_C_MBCHAR([yes])
GLIBCPP_ENABLE_C99([yes])
GLIBCPP_ENABLE_LONG_LONG([yes])
GLIBCPP_ENABLE_CHEADERS([c_std])
GLIBCPP_ENABLE_THREADS
GLIBCPP_ENABLE_CXX_FLAGS([none])
GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS
GLIBCPP_ENABLE_CONCEPT_CHECKS
if test -n "$with_cross_host" || test x"$build" != x"$host"; then
# This lets us hard-code the functionality we know
# we'll have in the cross target environment. "Let" is a
# sugar-coated word placed on an especially dull and tedious hack, actually.
# Here's why GLIBCPP_CHECK_MATH_SUPPORT, and other autoconf macros
# that involve linking can't be used:
# "cannot open sim-crt0.o"
# "cannot open crt0.o"
# etc. All this is because there currently exists no unified,
# consistent way for top level CC information to be passed down
# to target directories: newlib includes, newlib linking info,
# libgloss versus newlib crt0.o, etc. When all of this is done, all
# of this hokey, excessive AC_DEFINE junk for crosses can be removed.
# We are being configured with some form of cross compiler.
GLIBCPP_IS_CROSS_COMPILING=1
# If Canadian cross, then don't pick up tools from the build
# directory.
if test -n "$with_cross_host" && test x"$build" != x"$with_cross_host"; then
CANADIAN=yes
else
CANADIAN=no
fi
# Construct crosses by hand, eliminating bits that need ld...
# GLIBCPP_CHECK_COMPILER_FEATURES
# GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
# GLIBCPP_CHECK_MATH_SUPPORT
case "$target_alias" in
*-linux*)
# 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 sys/types.h \
fp.h locale.h float.h inttypes.h])
SECTION_FLAGS='-ffunction-sections -fdata-sections'
AC_SUBST(SECTION_FLAGS)
GLIBCPP_CHECK_LINKER_FEATURES
GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
GLIBCPP_CHECK_WCHAR_T_SUPPORT
os_include_dir="config/os/gnu-linux"
AC_DEFINE(HAVE_COPYSIGN)
AC_DEFINE(HAVE_COPYSIGNF)
AC_DEFINE(HAVE_FINITEF)
AC_DEFINE(HAVE_FREXPF)
AC_DEFINE(HAVE_HYPOTF)
AC_DEFINE(HAVE_SINCOS)
AC_DEFINE(HAVE_SINCOSF)
if test x"long_double_math_on_this_cpu" = x"yes"; then
AC_DEFINE(HAVE_HYPOTL)
fi
;;
*-hpux*)
# 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 sys/types.h \
fp.h locale.h float.h inttypes.h])
SECTION_FLAGS='-ffunction-sections -fdata-sections'
AC_SUBST(SECTION_FLAGS)
GLIBCPP_CHECK_LINKER_FEATURES
GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
GLIBCPP_CHECK_WCHAR_T_SUPPORT
os_include_dir="config/os/hpux"
AC_DEFINE(HAVE_COPYSIGN)
AC_DEFINE(HAVE_COPYSIGNF)
AC_DEFINE(HAVE_FINITEF)
AC_DEFINE(HAVE_FREXPF)
AC_DEFINE(HAVE_HYPOT)
AC_DEFINE(HAVE_SINCOS)
AC_DEFINE(HAVE_SINCOSF)
;;
*-netbsd*)
# 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 sys/types.h \
fp.h locale.h float.h inttypes.h])
SECTION_FLAGS='-ffunction-sections -fdata-sections'
AC_SUBST(SECTION_FLAGS)
GLIBCPP_CHECK_LINKER_FEATURES
GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
GLIBCPP_CHECK_WCHAR_T_SUPPORT
os_include_dir="config/os/bsd/netbsd"
AC_DEFINE(HAVE_COPYSIGN)
AC_DEFINE(HAVE_COPYSIGNF)
AC_DEFINE(HAVE_FINITEF)
AC_DEFINE(HAVE_FREXPF)
AC_DEFINE(HAVE_HYPOTF)
;;
*-mingw32*)
AC_CHECK_HEADERS([sys/types.h locale.h float.h])
GLIBCPP_CHECK_LINKER_FEATURES
GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
GLIBCPP_CHECK_WCHAR_T_SUPPORT
os_include_dir="config/os/mingw32"
;;
*)
os_include_dir="config/os/newlib"
AC_DEFINE(HAVE_HYPOT)
;;
esac
case "$target_alias" in
*-mingw32*)
;;
*)
# GLIBCPP_CHECK_STDLIB_SUPPORT
AC_DEFINE(HAVE_STRTOF)
AC_DEFINE(HAVE_STRTOLD)
# 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_FINITE)
AC_DEFINE(HAVE_FINITEF)
AC_DEFINE(HAVE_FLOORF)
AC_DEFINE(HAVE_FMODF)
AC_DEFINE(HAVE_FREXPF)
AC_DEFINE(HAVE_ISINF)
AC_DEFINE(HAVE_ISINFF)
AC_DEFINE(HAVE_ISNAN)
AC_DEFINE(HAVE_ISNANF)
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)
;;
esac
# 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_FINITEL)
AC_DEFINE(HAVE_FLOORL)
AC_DEFINE(HAVE_FMODL)
AC_DEFINE(HAVE_FREXPL)
AC_DEFINE(HAVE_ISINFL)
AC_DEFINE(HAVE_ISNANL)
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
else
# We are being configured natively. We can do more elaborate tests
# that include AC_TRY_COMPILE now, as the linker is assumed to be
# working.
GLIBCPP_IS_CROSS_COMPILING=0
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])
GLIBCPP_CHECK_COMPILER_FEATURES
GLIBCPP_CHECK_LINKER_FEATURES
GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
GLIBCPP_CHECK_MATH_SUPPORT
GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
GLIBCPP_CHECK_WCHAR_T_SUPPORT
GLIBCPP_CHECK_STDLIB_SUPPORT
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
# Establish limits on memory usage during 'make check'
GLIBCPP_CONFIGURE_TESTSUITE
fi
# This depends on the possibly-skipped linker test above.
GLIBCPP_ENABLE_SYMVERS([yes])
# Propagate the target-specific source directories through the build chain.
OS_INC_SRCDIR=$os_include_dir/bits
ATOMICITY_INC_SRCDIR=$ATOMICITYH/bits
CPU_LIMITS_INC_SRCDIR=$CPULIMITSH/bits
AC_SUBST(OS_INC_SRCDIR)
AC_SUBST(ATOMICITY_INC_SRCDIR)
AC_SUBST(CPU_LIMITS_INC_SRCDIR)
# Set up cross-compile flags
AC_SUBST(GLIBCPP_IS_CROSS_COMPILING)
AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
AC_CACHE_SAVE
if test "${multilib}" = "yes"; then
multilib_arg="--enable-multilib"
else
multilib_arg=
fi
# Needed so that g++ can find the correct include subdir automatically.
INTERFACE=v3
# Export all the install information
GLIBCPP_EXPORT_INSTALL_INFO
# Export all the include and flag information to makefiles.
GLIBCPP_EXPORT_INCLUDES
GLIBCPP_EXPORT_FLAGS
if ${CONFIG_SHELL-/bin/sh} ./libtool --tag CXX --features |
grep "enable shared" > /dev/null; then
LIBSUPCXX_PICFLAGS=-prefer-pic
else
LIBSUPCXX_PICFLAGS=
fi
AC_SUBST(LIBSUPCXX_PICFLAGS)
# Generate the various Makefiles, include files, and scripts.
# NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
# and libsupc++/Makefile.am so that multilib installs will end up
# installed in the correct place. To work around this not being passed
# down from config-ml.in -> top_srcdir/Makefile.am ->
# top_srcdir/{src,libsupc++}/Makefile.am, manually append it here.
AC_OUTPUT(Makefile \
include/Makefile src/Makefile \
libmath/Makefile libio/Makefile libsupc++/Makefile \
po/Makefile testsuite/Makefile mkcheck testsuite_flags,
[if test -n "$CONFIG_FILES"; then
ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
grep '^MULTISUBDIR =' Makefile >> src/Makefile
grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile
fi
chmod +x mkcheck
chmod +x testsuite_flags
],
srcdir=${srcdir}
host=${host}
target=${target}
with_multisubdir=${with_multisubdir}
ac_configure_args="${multilib_arg} ${ac_configure_args}"
CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
glibcpp_basedir=${glibcpp_basedir}
CC="${CC}"
CXX="${CXX}"
)
dnl In autoconf 2.5x, AC_OUTPUT is replaced by three AC_ macros:
dnl AC_CONFIG_FILES(Makefile \
dnl include/Makefile src/Makefile \
dnl libmath/Makefile libio/Makefile libsupc++/Makefile \
dnl po/Makefile testsuite/Makefile mkcheck testsuite_flags)
dnl AC_CONFIG_COMMANDS([default],
dnl [if test -n "$CONFIG_FILES"; then
dnl ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
dnl grep '^MULTISUBDIR =' Makefile >> src/Makefile
dnl grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile
dnl fi
dnl chmod +x mkcheck
dnl chmod +x testsuite_flags
dnl ],
dnl srcdir=${srcdir}
dnl host=${host}
dnl target=${target}
dnl with_multisubdir=${with_multisubdir}
dnl ac_configure_args="${multilib_arg} ${ac_configure_args}"
dnl CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
dnl glibcpp_basedir=${glibcpp_basedir}
dnl CC="${CC}"
dnl CXX="${CXX}"
dnl )
dnl AC_OUTPUT
# Sanity checking & User-visible messages.
# Checks down here, otherwise they get scrolled off before
# the user will notice.
# Trying to get more people to read documentation. Possibly remove
# check and warn all the time. There is no "informational" AC_MSG_
# macro, so these are going to be printed even when --quiet/--silent
# is given.
if test ! -f stamp-sanity-warned; then
touch stamp-sanity-warned
echo ""
echo "Please make certain that you read the installation information here:"
echo " faster => ${srcdir}/docs/install.html"
echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/install.html>"
echo ""
echo "and the configuration information here:"
echo " faster => ${srcdir}/docs/configopts.html"
echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/configopts.html>"
echo ""
echo "before proceeding with ${_cv_gnu_make_command}."
echo ""
fi