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# @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
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