gcc/libgo/configure.ac

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# configure.ac -- Go library configure script.
# Copyright 2009 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.
# Process this file with autoreconf to produce configure.
AC_PREREQ(2.64)
AC_INIT(package-unused, version-unused,, libgo)
AC_CONFIG_SRCDIR(Makefile.am)
AC_CONFIG_HEADER(config.h)
libtool_VERSION=1:0:0
AC_SUBST(libtool_VERSION)
AM_ENABLE_MULTILIB(, ..)
AC_CANONICAL_SYSTEM
target_alias=${target_alias-$host_alias}
AM_INIT_AUTOMAKE([1.9.3 no-define foreign -Wall])
AH_TEMPLATE(PACKAGE, [Name of package])
AH_TEMPLATE(VERSION, [Version number of package])
m4_rename([_AC_ARG_VAR_PRECIOUS],[glibgo_PRECIOUS])
m4_define([_AC_ARG_VAR_PRECIOUS],[])
AC_PROG_CC
AC_PROG_GO
m4_rename_force([glibgo_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
AC_SUBST(CFLAGS)
AM_MAINTAINER_MODE
AC_PROG_LD
AC_PROG_RANLIB
AC_CHECK_TOOL(OBJCOPY, objcopy, missing-objcopy)
AC_LIBTOOL_DLOPEN
AM_PROG_LIBTOOL
AC_SUBST(enable_shared)
AC_SUBST(enable_static)
WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
AC_SUBST(WARN_FLAGS)
dnl FIXME: This should be controlled by --enable-maintainer-mode.
WERROR="-Werror"
AC_SUBST(WERROR)
glibgo_toolexecdir=no
glibgo_toolexeclibdir=no
glibgo_prefixdir=$prefix
AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
AC_ARG_ENABLE([version-specific-runtime-libs],
AC_HELP_STRING([--enable-version-specific-runtime-libs],
[Specify that runtime libraries should be installed in a compiler-specific directory]),
[case "$enableval" in
yes) version_specific_libs=yes ;;
no) version_specific_libs=no ;;
*) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
esac],
[version_specific_libs=no])
AC_MSG_RESULT($version_specific_libs)
# Version-specific runtime libs processing.
if test $version_specific_libs = yes; then
glibgo_toolexecdir='${libdir}/gcc/${host_alias}'
glibgo_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)'
fi
# Calculate glibgo_toolexecdir, glibgo_toolexeclibdir
# Install a library built with a cross compiler in tooldir, not libdir.
if test x"$glibgo_toolexecdir" = x"no"; then
if test -n "$with_cross_host" &&
test x"$with_cross_host" != x"no"; then
glibgo_toolexecdir='${exec_prefix}/${host_alias}'
glibgo_toolexeclibdir='${toolexecdir}/lib'
else
glibgo_toolexecdir='${libdir}/gcc/${host_alias}'
glibgo_toolexeclibdir='${libdir}'
fi
multi_os_directory=`$CC -print-multi-os-directory`
case $multi_os_directory in
.) ;; # Avoid trailing /.
*) glibgo_toolexeclibdir=$glibgo_toolexeclibdir/$multi_os_directory ;;
esac
fi
AC_SUBST(glibgo_prefixdir)
AC_SUBST(glibgo_toolexecdir)
AC_SUBST(glibgo_toolexeclibdir)
# See if the user wants to configure without libffi. Some
# architectures don't support it. FIXME: We should set a default
# based on the host.
AC_ARG_WITH(libffi,
AS_HELP_STRING([--without-libffi],
[don't use libffi]),
[:],
[with_libffi=${with_libffi_default-yes}])
LIBFFI=
LIBFFIINCS=
if test "$with_libffi" != no; then
AC_DEFINE(USE_LIBFFI, 1, [Define if we're to use libffi.])
LIBFFI=../libffi/libffi_convenience.la
LIBFFIINCS='-I$(top_srcdir)/../libffi/include -I../libffi/include'
fi
AC_SUBST(LIBFFI)
AC_SUBST(LIBFFIINCS)
is_darwin=no
is_freebsd=no
is_linux=no
is_rtems=no
GOOS=unknown
case ${host} in
*-*-darwin*) is_darwin=yes; GOOS=darwin ;;
*-*-freebsd*) is_freebsd=yes; GOOS=freebsd ;;
*-*-linux*) is_linux=yes; GOOS=linux ;;
*-*-rtems*) is_rtems=yes; GOOS=rtems ;;
esac
AM_CONDITIONAL(LIBGO_IS_DARWIN, test $is_darwin = yes)
AM_CONDITIONAL(LIBGO_IS_FREEBSD, test $is_freebsd = yes)
AM_CONDITIONAL(LIBGO_IS_LINUX, test $is_linux = yes)
AM_CONDITIONAL(LIBGO_IS_RTEMS, test $is_rtems = yes)
AC_SUBST(GOOS)
is_386=no
is_x86_64=no
is_arm=no
GOARCH=unknown
case ${host} in
changequote(,)dnl
i[34567]86-*-* | x86_64-*-*)
changequote([,])dnl
AC_PREPROC_IFELSE([
#ifdef __x86_64__
#error 64-bit
#endif],
[is_386=yes], [is_x86_64=yes])
if test "$is_386" = "yes"; then
GOARCH=386
else
GOARCH=amd64
fi
;;
arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*)
is_arm=yes
GOARCH=arm
;;
esac
AM_CONDITIONAL(LIBGO_IS_386, test $is_386 = yes)
AM_CONDITIONAL(LIBGO_IS_X86_64, test $is_x86_64 = yes)
AM_CONDITIONAL(LIBGO_IS_ARM, test $is_arm = yes)
AC_SUBST(GOARCH)
dnl Use -fsplit-stack when compiling C code if available.
AC_CACHE_CHECK([whether -fsplit-stack is supported],
[ac_cv_libgo_split_stack_supported],
[CFLAGS_hold=$CFLAGS
CFLAGS="$CFLAGS -fsplit-stack"
AC_COMPILE_IFELSE([[int i;]],
[ac_cv_libgo_split_stack_supported=yes],
[ac_cv_libgo_split_stack_supported=no])
CFLAGS=$CFLAGS_hold])
if test "$ac_cv_libgo_split_stack_supported" = yes; then
SPLIT_STACK=-fsplit-stack
AC_DEFINE(USING_SPLIT_STACK, 1,
[Define if the compiler supports -fsplit-stack])
else
SPLIT_STACK=
fi
AC_SUBST(SPLIT_STACK)
AM_CONDITIONAL(USING_SPLIT_STACK,
test "$ac_cv_libgo_split_stack_supported" = yes)
dnl Check whether the linker does stack munging when calling from
dnl split-stack into non-split-stack code. We check this by looking
dnl at the --help output. FIXME: This is only half right: it's
dnl possible for the linker to support this for some targets but not
dnl others.
AC_CACHE_CHECK([whether linker supports split stack],
[ac_cv_libgo_linker_supports_split_stack],
ac_cv_libgo_linker_supports_split_stack=no
if $LD --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
ac_cv_libgo_linker_supports_split_stack=yes
fi)
if test "$ac_cv_libgo_linker_supports_split_stack" = yes; then
AC_DEFINE(LINKER_SUPPORTS_SPLIT_STACK, 1,
[Define if the linker support split stack adjustments])
fi
dnl Test for the -lm library.
MATH_LIBS=
AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm)
AC_SUBST(MATH_LIBS)
dnl Test whether the compiler supports the -pthread option.
AC_CACHE_CHECK([whether -pthread is supported],
[ac_cv_libgo_pthread_supported],
[CFLAGS_hold=$CFLAGS
CFLAGS="$CFLAGS -pthread"
AC_COMPILE_IFELSE([[int i;]],
[ac_cv_libgo_pthread_supported=yes],
[ac_cv_libgo_pthread_supported=no])
CFLAGS=$CFLAGS_hold])
PTHREAD_CFLAGS=
if test "$ac_cv_libgo_pthread_supported" = yes; then
PTHREAD_CFLAGS=-pthread
fi
AC_SUBST(PTHREAD_CFLAGS)
dnl Test for the -lpthread library.
PTHREAD_LIBS=
AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread)
AC_SUBST(PTHREAD_LIBS)
AC_C_BIGENDIAN
GCC_CHECK_UNWIND_GETIPINFO
AC_CHECK_HEADERS(sys/mman.h syscall.h sys/epoll.h sys/ptrace.h sys/user.h sys/utsname.h)
AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes)
AC_CHECK_FUNCS(srandom random strsignal)
dnl For x86 we want to use the -minline-all-stringops option to avoid
dnl forcing a stack split when calling memcpy and friends.
AC_CACHE_CHECK([whether compiler supports -minline-all-stringops],
[ac_cv_libgo_compiler_supports_inline_all_stringops],
[CFLAGS_hold=$CFLAGS
CFLAGS="$CFLAGS -minline-all-stringops"
AC_COMPILE_IFELSE([int i;],
[ac_cv_libgo_compiler_supports_inline_all_stringops=yes],
[ac_cv_libgo_compiler_supports_inline_all_stringops=no])
CFLAGS=$CFLAGS_hold])
STRINGOPS_FLAG=
if test "$ac_cv_libgo_compiler_supports_inline_all_stringops" = yes; then
STRINGOPS_FLAG=-minline-all-stringops
fi
AC_SUBST(STRINGOPS_FLAG)
CFLAGS_hold=$CFLAGS
CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE"
AC_CHECK_TYPES(off64_t)
CFLAGS=$CFLAGS_hold
AC_CACHE_SAVE
if test ${multilib} = yes; then
multilib_arg="--enable-multilib"
else
multilib_arg=
fi
AC_CONFIG_FILES(Makefile testsuite/Makefile)
AC_CONFIG_COMMANDS([default],
[if test -n "$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 $i/Makefile
;;
esac
done
rm vpsed
fi
],
[
# Variables needed in config.status (file generation) which aren't already
# passed by autoconf.
SUBDIRS="$SUBDIRS"
])
AC_OUTPUT