libcilkrts/configure.ac - gcc - Git at Google

 #  @copyright
 #  Copyright (C) 2011-2013, Intel Corporation
 #  All rights reserved.
 #
 #  @copyright
 #  Redistribution and use in source and binary forms, with or without
 #  modification, are permitted provided that the following conditions
 #  are met:
 #
 #    * Redistributions of source code must retain the above copyright
 #      notice, this list of conditions and the following disclaimer.
 #    * Redistributions in binary form must reproduce the above copyright
 #      notice, this list of conditions and the following disclaimer in
 #      the documentation and/or other materials provided with the
 #      distribution.
 #    * Neither the name of Intel Corporation nor the names of its
 #      contributors may be used to endorse or promote products derived
 #      from this software without specific prior written permission.
 #
 #  @copyright
 #  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 #  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 #  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 #  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 #  HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 #  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 #  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 #  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 #  AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 #  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
 #  WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 #  POSSIBILITY OF SUCH DAMAGE.

 AC_INIT([Cilk Runtime Library], [2.0], [cilk@intel.com])
 AC_PREREQ([2.64])

 # Needed to define ${target}.  Needs to be very early to avoid annoying
 # warning about calling AC_ARG_PROGRAM before AC_CANONICAL_SYSTEM
 AC_CANONICAL_SYSTEM
 target_alias=${target_alias-$host_alias}
 AC_SUBST(target_alias)
 AM_INIT_AUTOMAKE(foreign no-dist)

 AM_MAINTAINER_MODE

 AM_ENABLE_MULTILIB(, ..)

 # Build a DLL on Windows
 # AC_LIBTOOL_WIN32_DLL
 AC_PROG_CC
 AC_PROG_CXX
 # AC_PROG_LIBTOOL
 # AC_CONFIG_MACRO_DIR([..])
 AC_CONFIG_FILES([Makefile libcilkrts.spec])
 AC_FUNC_ALLOCA

 # Check whether the target supports protected visibility.
 save_CFLAGS="$CFLAGS"
 CFLAGS="$CFLAGS -Werror"
 AC_TRY_COMPILE([void __attribute__((visibility("protected"))) foo(void) { }],
 	       [], libcilkrts_cv_have_attribute_visibility=yes,
 	       libcilkrts_cv_have_attribute_visibility=no)
 CFLAGS="$save_CFLAGS"
 if test $libcilkrts_cv_have_attribute_visibility = yes; then
   AC_DEFINE(HAVE_ATTRIBUTE_VISIBILITY, 1,
     [Define to 1 if the target supports __attribute__((visibility(...))).])
 fi

 # Get target configury.
 . ${srcdir}/configure.tgt
 if test -n "$UNSUPPORTED"; then
    AC_MSG_ERROR([Configuration ${target} is unsupported.])
 fi

 if test "${multilib}" = "yes"; then
   multilib_arg="--enable-multilib"
 else
   multilib_arg=
 fi

 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 compi
 ler-specific directory]),
   [case "$enableval" in
     yes) enable_version_specific_runtime_libs=yes ;;
     no)  enable_version_specific_runtime_libs=no ;;
     *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs
 ]);;
    esac],
   [enable_version_specific_runtime_libs=no])
 AC_MSG_RESULT($enable_version_specific_runtime_libs)


 # Calculate toolexeclibdir
 # Also toolexecdir, though it's only used in toolexeclibdir
 case ${enable_version_specific_runtime_libs} in
   yes)
     # Need the gcc compiler version to know where to install libraries
     # and header files if --enable-version-specific-runtime-libs option
     # is selected.
     toolexecdir='$(libdir)/gcc/$(target_alias)'
     toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
     ;;
   no)
     if test -n "$with_cross_host" &&
        test x"$with_cross_host" != x"no"; then
       # Install a library built with a cross compiler in tooldir, not libdir.
       toolexecdir='$(exec_prefix)/$(target_alias)'
       toolexeclibdir='$(toolexecdir)/lib'
     else
       toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
       toolexeclibdir='$(libdir)'
     fi
     multi_os_directory=`$CC -print-multi-os-directory`
     case $multi_os_directory in
       .) ;; # Avoid trailing /.
       *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
     esac
     ;;
 esac

 # Set config_dir based on the target.  config_dir specifies where to get
 # target-specific files.  The generic implementation is incomplete, but
 # contains information on what's needed
 case "${target}" in

   x86_64-*-*)
     config_dir="x86"
     ;;

   i?86-*-*)
     config_dir="x86"
     ;;

   *)
     config_dir="generic"
     ;;

 esac
 AC_SUBST(config_dir)

 # We have linker scripts for appropriate operating systems
 linux_linker_script=no
 case "${host}" in
     *-*-linux*)
         linux_linker_script=yes
         ;;
 esac
 AM_CONDITIONAL(LINUX_LINKER_SCRIPT, test "$linux_linker_script" = "yes")

 mac_linker_script=no
 case "${host}" in
     *-*-apple*)
         mac_linker_script=yes
         ;;
 esac
 AM_CONDITIONAL(MAC_LINKER_SCRIPT, test "$mac_linker_script" = "yes")

 AC_LIBTOOL_DLOPEN
 AM_PROG_LIBTOOL
 AC_SUBST(toolexecdir)
 AC_SUBST(toolexeclibdir)

 AC_SUBST(lt_cv_dlopen_libs)

 # Check to see if -pthread or -lpthread is needed.  Prefer the former.
 # Note that the CILK_SELF_SPEC in gcc.c may force -pthread.
 # In case the pthread.h system header is not found, this test will fail.
 XCFLAGS=""
 XLDFLAGS=""
 CFLAGS="$CFLAGS -pthread"
 AC_LINK_IFELSE(
  [AC_LANG_PROGRAM(
   [#include <pthread.h>
    void *g(void *d) { return NULL; }],
   [pthread_t t; pthread_create(&t,NULL,g,NULL);])],
  [XCFLAGS=" -Wc,-pthread"],
  [CFLAGS="$save_CFLAGS" LIBS="-lpthread $LIBS"
   AC_LINK_IFELSE(
    [AC_LANG_PROGRAM(
     [#include <pthread.h>
      void *g(void *d) { return NULL; }],
     [pthread_t t; pthread_create(&t,NULL,g,NULL);])],
    [],
    [AC_MSG_ERROR([Pthreads are required to build libcilkrts])])])

 # Check for pthread_{,attr_}[sg]etaffinity_np.
 AC_LINK_IFELSE(
  [AC_LANG_PROGRAM(
   [#define _GNU_SOURCE
    #include <pthread.h>],
   [cpu_set_t cpuset;
    pthread_attr_t attr;
    pthread_getaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
    if (CPU_ISSET (0, &cpuset))
      CPU_SET (1, &cpuset);
    else
      CPU_ZERO (&cpuset);
    pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
    pthread_attr_init (&attr);
    pthread_attr_getaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);
    pthread_attr_setaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);])],
   AC_DEFINE(HAVE_PTHREAD_AFFINITY_NP, 1,
 [       Define if pthread_{,attr_}{g,s}etaffinity_np is supported.]))

 # Every c++ lib is linking by default with -nostdlib, which leads to the
 # fact, that proper pthread library will not be given at link time. We have
 # to hard-code that.
 case "${target}" in

   *android*)
     XLDFLAGS="$XLDFLAGS -lc"
      ;;
   *)
     XLDFLAGS="$XLDFLAGS -lpthread"
     ;;

 esac

 AC_SUBST(XCFLAGS)
 AC_SUBST(XLDFLAGS)

 CFLAGS="$save_CFLAGS"

 if test $enable_shared = yes; then
   link_cilkrts="-lcilkrts %{static: $LIBS}"
 else
   link_cilkrts="-lcilkrts $LIBS"
 fi
 AC_SUBST(link_cilkrts)


 # Must be last
 AC_OUTPUT
	# @copyright
	# Copyright (C) 2011-2013, Intel Corporation
	# All rights reserved.
	#
	# @copyright
	# Redistribution and use in source and binary forms, with or without
	# modification, are permitted provided that the following conditions
	# are met:
	#
	# * Redistributions of source code must retain the above copyright
	# notice, this list of conditions and the following disclaimer.
	# * Redistributions in binary form must reproduce the above copyright
	# notice, this list of conditions and the following disclaimer in
	# the documentation and/or other materials provided with the
	# distribution.
	# * Neither the name of Intel Corporation nor the names of its
	# contributors may be used to endorse or promote products derived
	# from this software without specific prior written permission.
	#
	# @copyright
	# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
	# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
	# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
	# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
	# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
	# WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	# POSSIBILITY OF SUCH DAMAGE.

	AC_INIT([Cilk Runtime Library], [2.0], [cilk@intel.com])
	AC_PREREQ([2.64])

	# Needed to define ${target}. Needs to be very early to avoid annoying
	# warning about calling AC_ARG_PROGRAM before AC_CANONICAL_SYSTEM
	AC_CANONICAL_SYSTEM
	target_alias=${target_alias-$host_alias}
	AC_SUBST(target_alias)
	AM_INIT_AUTOMAKE(foreign no-dist)

	AM_MAINTAINER_MODE

	AM_ENABLE_MULTILIB(, ..)

	# Build a DLL on Windows
	# AC_LIBTOOL_WIN32_DLL
	AC_PROG_CC
	AC_PROG_CXX
	# AC_PROG_LIBTOOL
	# AC_CONFIG_MACRO_DIR([..])
	AC_CONFIG_FILES([Makefile libcilkrts.spec])
	AC_FUNC_ALLOCA

	# Check whether the target supports protected visibility.
	save_CFLAGS="$CFLAGS"
	CFLAGS="$CFLAGS -Werror"
	AC_TRY_COMPILE([void __attribute__((visibility("protected"))) foo(void) { }],
	[], libcilkrts_cv_have_attribute_visibility=yes,
	libcilkrts_cv_have_attribute_visibility=no)
	CFLAGS="$save_CFLAGS"
	if test $libcilkrts_cv_have_attribute_visibility = yes; then
	AC_DEFINE(HAVE_ATTRIBUTE_VISIBILITY, 1,
	[Define to 1 if the target supports __attribute__((visibility(...))).])
	fi

	# Get target configury.
	. ${srcdir}/configure.tgt
	if test -n "$UNSUPPORTED"; then
	AC_MSG_ERROR([Configuration ${target} is unsupported.])
	fi

	if test "${multilib}" = "yes"; then
	multilib_arg="--enable-multilib"
	else
	multilib_arg=
	fi

	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 compi
	ler-specific directory]),
	[case "$enableval" in
	yes) enable_version_specific_runtime_libs=yes ;;
	no) enable_version_specific_runtime_libs=no ;;
	*) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs
	]);;
	esac],
	[enable_version_specific_runtime_libs=no])
	AC_MSG_RESULT($enable_version_specific_runtime_libs)


	# Calculate toolexeclibdir
	# Also toolexecdir, though it's only used in toolexeclibdir
	case ${enable_version_specific_runtime_libs} in
	yes)
	# Need the gcc compiler version to know where to install libraries
	# and header files if --enable-version-specific-runtime-libs option
	# is selected.
	toolexecdir='$(libdir)/gcc/$(target_alias)'
	toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
	;;
	no)
	if test -n "$with_cross_host" &&
	test x"$with_cross_host" != x"no"; then
	# Install a library built with a cross compiler in tooldir, not libdir.
	toolexecdir='$(exec_prefix)/$(target_alias)'
	toolexeclibdir='$(toolexecdir)/lib'
	else
	toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
	toolexeclibdir='$(libdir)'
	fi
	multi_os_directory=`$CC -print-multi-os-directory`
	case $multi_os_directory in
	.) ;; # Avoid trailing /.
	*) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
	esac
	;;
	esac

	# Set config_dir based on the target. config_dir specifies where to get
	# target-specific files. The generic implementation is incomplete, but
	# contains information on what's needed
	case "${target}" in

	x86_64--)
	config_dir="x86"
	;;

	i?86--)
	config_dir="x86"
	;;

	*)
	config_dir="generic"
	;;

	esac
	AC_SUBST(config_dir)

	# We have linker scripts for appropriate operating systems
	linux_linker_script=no
	case "${host}" in
	--linux*)
	linux_linker_script=yes
	;;
	esac
	AM_CONDITIONAL(LINUX_LINKER_SCRIPT, test "$linux_linker_script" = "yes")

	mac_linker_script=no
	case "${host}" in
	--apple*)
	mac_linker_script=yes
	;;
	esac
	AM_CONDITIONAL(MAC_LINKER_SCRIPT, test "$mac_linker_script" = "yes")

	AC_LIBTOOL_DLOPEN
	AM_PROG_LIBTOOL
	AC_SUBST(toolexecdir)
	AC_SUBST(toolexeclibdir)

	AC_SUBST(lt_cv_dlopen_libs)

	# Check to see if -pthread or -lpthread is needed. Prefer the former.
	# Note that the CILK_SELF_SPEC in gcc.c may force -pthread.
	# In case the pthread.h system header is not found, this test will fail.
	XCFLAGS=""
	XLDFLAGS=""
	CFLAGS="$CFLAGS -pthread"
	AC_LINK_IFELSE(
	[AC_LANG_PROGRAM(
	[#include <pthread.h>
	void g(void d) { return NULL; }],
	[pthread_t t; pthread_create(&t,NULL,g,NULL);])],
	[XCFLAGS=" -Wc,-pthread"],
	[CFLAGS="$save_CFLAGS" LIBS="-lpthread $LIBS"
	AC_LINK_IFELSE(
	[AC_LANG_PROGRAM(
	[#include <pthread.h>
	void g(void d) { return NULL; }],
	[pthread_t t; pthread_create(&t,NULL,g,NULL);])],
	[],
	[AC_MSG_ERROR([Pthreads are required to build libcilkrts])])])

	# Check for pthread_{,attr_}[sg]etaffinity_np.
	AC_LINK_IFELSE(
	[AC_LANG_PROGRAM(
	[#define _GNU_SOURCE
	#include <pthread.h>],
	[cpu_set_t cpuset;
	pthread_attr_t attr;
	pthread_getaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
	if (CPU_ISSET (0, &cpuset))
	CPU_SET (1, &cpuset);
	else
	CPU_ZERO (&cpuset);
	pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
	pthread_attr_init (&attr);
	pthread_attr_getaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);
	pthread_attr_setaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);])],
	AC_DEFINE(HAVE_PTHREAD_AFFINITY_NP, 1,
	[ Define if pthread_{,attr_}{g,s}etaffinity_np is supported.]))

	# Every c++ lib is linking by default with -nostdlib, which leads to the
	# fact, that proper pthread library will not be given at link time. We have
	# to hard-code that.
	case "${target}" in

	android)
	XLDFLAGS="$XLDFLAGS -lc"
	;;
	*)
	XLDFLAGS="$XLDFLAGS -lpthread"
	;;

	esac

	AC_SUBST(XCFLAGS)
	AC_SUBST(XLDFLAGS)

	CFLAGS="$save_CFLAGS"

	if test $enable_shared = yes; then
	link_cilkrts="-lcilkrts %{static: $LIBS}"
	else
	link_cilkrts="-lcilkrts $LIBS"
	fi
	AC_SUBST(link_cilkrts)


	# Must be last
	AC_OUTPUT