258 lines
8.7 KiB
Plaintext
258 lines
8.7 KiB
Plaintext
# Process this file with autoreconf to produce a configure script.
|
|
# Copyright (C) 2012-2013 Free Software Foundation, Inc.
|
|
#
|
|
# This file is part of the GNU Atomic Library (libatomic).
|
|
#
|
|
# Libatomic is free software; you can redistribute it and/or modify it
|
|
# under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# Libatomic is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
# more details.
|
|
#
|
|
# Under Section 7 of GPL version 3, you are granted additional
|
|
# permissions described in the GCC Runtime Library Exception, version
|
|
# 3.1, as published by the Free Software Foundation.
|
|
#
|
|
# You should have received a copy of the GNU General Public License and
|
|
# a copy of the GCC Runtime Library Exception along with this program;
|
|
# see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
# <http://www.gnu.org/licenses/>.
|
|
|
|
AC_PREREQ(2.59)
|
|
AC_INIT([GNU Atomic Library], 1.0,,[libatomic])
|
|
AC_CONFIG_HEADER(auto-config.h)
|
|
|
|
# -------
|
|
# Options
|
|
# -------
|
|
|
|
AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
|
|
LIBAT_ENABLE(version-specific-runtime-libs, no, ,
|
|
[Specify that runtime libraries should be installed in a compiler-specific directory],
|
|
permit yes|no)
|
|
AC_MSG_RESULT($enable_version_specific_runtime_libs)
|
|
|
|
# We would like our source tree to be readonly. However when releases or
|
|
# pre-releases are generated, the flex/bison generated files as well as the
|
|
# various formats of manuals need to be included along with the rest of the
|
|
# sources. Therefore we have --enable-generated-files-in-srcdir to do
|
|
# just that.
|
|
AC_MSG_CHECKING([for --enable-generated-files-in-srcdir])
|
|
LIBAT_ENABLE(generated-files-in-srcdir, no, ,
|
|
[put copies of generated files in source dir intended for creating source
|
|
tarballs for users without texinfo bison or flex.],
|
|
permit yes|no)
|
|
AC_MSG_RESULT($enable_generated_files_in_srcdir)
|
|
AM_CONDITIONAL(GENINSRC, test "$enable_generated_files_in_srcdir" = yes)
|
|
|
|
|
|
# -------
|
|
|
|
# Gets build, host, target, *_vendor, *_cpu, *_os, etc.
|
|
#
|
|
# You will slowly go insane if you do not grok the following fact: when
|
|
# building this library, the top-level /target/ becomes the library's /host/.
|
|
#
|
|
# configure then causes --target to default to --host, exactly like any
|
|
# other package using autoconf. Therefore, 'target' and 'host' will
|
|
# always be the same. This makes sense both for native and cross compilers
|
|
# just think about it for a little while. :-)
|
|
#
|
|
# Also, if this library is being configured as part of a cross compiler, the
|
|
# top-level configure script will pass the "real" host as $with_cross_host.
|
|
#
|
|
# Do not delete or change the following two lines. For why, see
|
|
# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
|
|
AC_CANONICAL_SYSTEM
|
|
target_alias=${target_alias-$host_alias}
|
|
|
|
# Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the
|
|
# following is magically included in AUTOMAKE_OPTIONS in each Makefile.am.
|
|
# 1.9.0: minimum required version
|
|
# no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch
|
|
# of other PACKAGE_* variables will, however, and there's nothing
|
|
# we can do about that; they come from AC_INIT).
|
|
# no-dist: we don't want 'dist' and related rules.
|
|
# foreign: we don't follow the normal rules for GNU packages (no COPYING
|
|
# file in the top srcdir, etc, etc), so stop complaining.
|
|
# -Wall: turns on all automake warnings...
|
|
# -Wno-portability: ...except this one, since GNU make is required.
|
|
# -Wno-override: ... and this one, since we do want this in testsuite.
|
|
AM_INIT_AUTOMAKE([1.9.0 foreign no-dist -Wall -Wno-portability -Wno-override])
|
|
AM_ENABLE_MULTILIB(, ..)
|
|
|
|
# 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/$multi_os_directory ;;
|
|
esac
|
|
;;
|
|
esac
|
|
AC_SUBST(toolexecdir)
|
|
AC_SUBST(toolexeclibdir)
|
|
|
|
# Check the compiler.
|
|
# The same as in boehm-gc and libstdc++. Have to borrow it from there.
|
|
# We must force CC to /not/ be precious variables; otherwise
|
|
# the wrong, non-multilib-adjusted value will be used in multilibs.
|
|
# As a side effect, we have to subst CFLAGS ourselves.
|
|
|
|
m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
|
|
m4_define([_AC_ARG_VAR_PRECIOUS],[])
|
|
AC_PROG_CC
|
|
AM_PROG_AS
|
|
m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
|
|
|
|
AC_SUBST(CFLAGS)
|
|
|
|
# In order to override CFLAGS_FOR_TARGET, all of our special flags go
|
|
# in XCFLAGS. But we need them in CFLAGS during configury. So put them
|
|
# in both places for now and restore CFLAGS at the end of config.
|
|
save_CFLAGS="$CFLAGS"
|
|
|
|
# Find other programs we need.
|
|
AC_CHECK_TOOL(AR, ar)
|
|
AC_CHECK_TOOL(NM, nm)
|
|
AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
|
|
AC_PATH_PROG(PERL, perl, perl-not-found-in-path-error)
|
|
AC_PROG_INSTALL
|
|
|
|
# Configure libtool
|
|
AM_PROG_LIBTOOL
|
|
AC_SUBST(enable_shared)
|
|
AC_SUBST(enable_static)
|
|
AM_MAINTAINER_MODE
|
|
|
|
# For libtool versioning info, format is CURRENT:REVISION:AGE
|
|
libtool_VERSION=1:0:0
|
|
AC_SUBST(libtool_VERSION)
|
|
|
|
# Get target configury.
|
|
. ${srcdir}/configure.tgt
|
|
if test -n "$UNSUPPORTED"; then
|
|
AC_MSG_ERROR([Configuration ${target} is unsupported.])
|
|
fi
|
|
|
|
# Disable fallbacks to __sync routines from libgcc. Otherwise we'll
|
|
# make silly decisions about what the cpu can do.
|
|
CFLAGS="$save_CFLAGS -fno-sync-libcalls $XCFLAGS"
|
|
|
|
# Check header files.
|
|
AC_STDC_HEADERS
|
|
ACX_HEADER_STRING
|
|
GCC_HEADER_STDINT(gstdint.h)
|
|
|
|
# Check for common type sizes
|
|
LIBAT_FORALL_MODES([LIBAT_HAVE_INT_MODE])
|
|
|
|
# Check for compiler builtins of atomic operations.
|
|
LIBAT_TEST_ATOMIC_INIT
|
|
LIBAT_FORALL_MODES([LIBAT_HAVE_ATOMIC_LOADSTORE])
|
|
LIBAT_FORALL_MODES([LIBAT_HAVE_ATOMIC_TAS])
|
|
LIBAT_FORALL_MODES([LIBAT_HAVE_ATOMIC_EXCHANGE])
|
|
LIBAT_FORALL_MODES([LIBAT_HAVE_ATOMIC_CAS])
|
|
LIBAT_FORALL_MODES([LIBAT_HAVE_ATOMIC_FETCH_ADD])
|
|
LIBAT_FORALL_MODES([LIBAT_HAVE_ATOMIC_FETCH_OP])
|
|
|
|
AC_C_BIGENDIAN
|
|
# I don't like the default behaviour of WORDS_BIGENDIAN undefined for LE.
|
|
AH_BOTTOM(
|
|
[#ifndef WORDS_BIGENDIAN
|
|
#define WORDS_BIGENDIAN 0
|
|
#endif])
|
|
|
|
LIBAT_WORDSIZE
|
|
|
|
# Check to see if -pthread or -lpthread is needed. Prefer the former.
|
|
# In case the pthread.h system header is not found, this test will fail.
|
|
case " $config_path " in
|
|
*" posix "*)
|
|
XPCFLAGS=""
|
|
CFLAGS="$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);])],
|
|
[XPCFLAGS=" -pthread"],
|
|
[CFLAGS="$save_CFLAGS $XCFLAGS" LIBS="-lpthread $LIBS"
|
|
AC_LINK_IFELSE(
|
|
[AC_LANG_PROGRAM(
|
|
[#include <pthread.h>
|
|
void *g(void *d) { return NULL; }],
|
|
[pthread_t t; pthread_create(&t,NULL,g,NULL);])],
|
|
[],
|
|
[AC_MSG_ERROR([Pthreads are required to build libatomic])])])
|
|
CFLAGS="$save_CFLAGS $XPCFLAGS"
|
|
;;
|
|
esac
|
|
|
|
# See what sort of export controls are available.
|
|
LIBAT_CHECK_ATTRIBUTE_VISIBILITY
|
|
LIBAT_CHECK_ATTRIBUTE_DLLEXPORT
|
|
LIBAT_CHECK_ATTRIBUTE_ALIAS
|
|
if test x$try_ifunc = xyes; then
|
|
LIBAT_CHECK_IFUNC
|
|
fi
|
|
|
|
# Check linker support.
|
|
LIBAT_ENABLE_SYMVERS
|
|
|
|
# Cleanup and exit.
|
|
CFLAGS="$save_CFLAGS"
|
|
AC_CACHE_SAVE
|
|
|
|
# Add -Wall -Werror if we are using GCC.
|
|
if test "x$GCC" = "xyes"; then
|
|
XCFLAGS="$XCFLAGS -Wall -Werror"
|
|
fi
|
|
|
|
XCFLAGS="$XCFLAGS $XPCFLAGS"
|
|
|
|
AC_SUBST(config_path)
|
|
AC_SUBST(XCFLAGS)
|
|
AC_SUBST(XLDFLAGS)
|
|
AC_SUBST(LIBS)
|
|
AC_SUBST(SIZES)
|
|
|
|
AM_CONDITIONAL(HAVE_IFUNC, test x$libat_cv_have_ifunc = xyes)
|
|
AM_CONDITIONAL(ARCH_ARM_LINUX,
|
|
[expr "$config_path" : ".* linux/arm .*" > /dev/null])
|
|
AM_CONDITIONAL(ARCH_I386,
|
|
[test "$ARCH" = x86 && test x$libat_cv_wordsize = x4])
|
|
AM_CONDITIONAL(ARCH_X86_64,
|
|
[test "$ARCH" = x86 && test x$libat_cv_wordsize = x8])
|
|
|
|
if test ${multilib} = yes; then
|
|
multilib_arg="--enable-multilib"
|
|
else
|
|
multilib_arg=
|
|
fi
|
|
|
|
AC_CONFIG_FILES(Makefile testsuite/Makefile)
|
|
AC_OUTPUT
|