libgo/configure.ac - toolchain/gcc - Linaro Git Browser

 # 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
 case ${host} in
   *-*-darwin*) is_darwin=yes ;;
   *-*-freebsd*) is_freebsd=yes ;;
   *-*-linux*)  is_linux=yes  ;;
   *-*-rtems*)  is_rtems=yes  ;;
 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)

 is_386=no
 is_x86_64=no
 is_arm=no
 case ${host} in
 changequote(,)dnl
   i[34567]86-*-*)
 changequote([,])dnl
     is_386=yes
     ;;
   x86_64-*-*)
     if test "$with_multisubdir" = "32"; then
       is_386=yes
     else
       is_x86_64=yes
     fi
     ;;
   arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*)
     is_arm=yes
     ;;
 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)

 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 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
	# 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
	case ${host} in
	--darwin*) is_darwin=yes ;;
	--freebsd*) is_freebsd=yes ;;
	--linux*) is_linux=yes ;;
	--rtems*) is_rtems=yes ;;
	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)

	is_386=no
	is_x86_64=no
	is_arm=no
	case ${host} in
	changequote(,)dnl
	i[34567]86--)
	changequote([,])dnl
	is_386=yes
	;;
	x86_64--)
	if test "$with_multisubdir" = "32"; then
	is_386=yes
	else
	is_x86_64=yes
	fi
	;;
	arm--* \| strongarm--* \| ep9312--* \| xscale--)
	is_arm=yes
	;;
	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)

	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 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