diff options
author | Aldy Hernandez <aldyh@gcc.gnu.org> | 2011-11-08 11:13:41 +0000 |
---|---|---|
committer | Aldy Hernandez <aldyh@gcc.gnu.org> | 2011-11-08 11:13:41 +0000 |
commit | 0a35513e4e73ec9c6f24e791d344308ad3ed030d (patch) | |
tree | e07de8d0b6265f8d72388d335bd471022e753d57 /libitm/configure.ac | |
parent | 287188ea072dd887a17dd56360531c3a22307e7c (diff) | |
download | gcc-0a35513e4e73ec9c6f24e791d344308ad3ed030d.zip gcc-0a35513e4e73ec9c6f24e791d344308ad3ed030d.tar.gz gcc-0a35513e4e73ec9c6f24e791d344308ad3ed030d.tar.bz2 |
Merge from transactional-memory branch.
From-SVN: r181154
Diffstat (limited to 'libitm/configure.ac')
-rw-r--r-- | libitm/configure.ac | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/libitm/configure.ac b/libitm/configure.ac new file mode 100644 index 0000000..7f35b15 --- /dev/null +++ b/libitm/configure.ac @@ -0,0 +1,270 @@ +# Process this file with autoreconf to produce a configure script. +# Copyright (C) 2011 Free Software Foundation, Inc. + +# This program 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 2 of the License, or +# (at your option) any later version. +# +# This program 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. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + +AC_PREREQ(2.59) +AC_INIT([GNU TM Runtime Library], 1.0,,[libitm]) +AC_CONFIG_HEADER(config.h) + +# ------- +# Options +# ------- + +AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) +LIBITM_ENABLE(version-specific-runtime-libs, no, , + [Specify that runtime libraries should be installed in a compiler-specific directory], + permit yes|no) +AC_MSG_RESULT($enable_version_specific_runtime_libs) + +# We would like our source tree to be readonly. However when releases or +# pre-releases are generated, the flex/bison generated files as well as the +# various formats of manuals need to be included along with the rest of the +# sources. Therefore we have --enable-generated-files-in-srcdir to do +# just that. +AC_MSG_CHECKING([for --enable-generated-files-in-srcdir]) +LIBITM_ENABLE(generated-files-in-srcdir, no, , + [put copies of generated files in source dir intended for creating source + tarballs for users without texinfo bison or flex.], + permit yes|no) +AC_MSG_RESULT($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). +# 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 -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/$multi_os_directory ;; + esac + ;; +esac +AC_SUBST(toolexecdir) +AC_SUBST(toolexeclibdir) + +# Check the compiler. +# The same as in boehm-gc and libstdc++. Have to borrow it from there. +# We must force CC to /not/ be precious variables; otherwise +# the wrong, non-multilib-adjusted value will be used in multilibs. +# As a side effect, we have to subst CFLAGS ourselves. + +m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) +m4_define([_AC_ARG_VAR_PRECIOUS],[]) +AC_PROG_CC +AC_PROG_CXX +AM_PROG_AS +m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) + +AC_SUBST(CFLAGS) + +# In order to override CFLAGS_FOR_TARGET, all of our special flags go +# in XCFLAGS. But we need them in CFLAGS during configury. So put them +# in both places for now and restore CFLAGS at the end of config. +save_CFLAGS="$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_MAKE_SET +AC_PROG_INSTALL + +# See if makeinfo has been installed and is modern enough +# that we can use it. +ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version], + [GNU texinfo.* \([0-9][0-9.]*\)], + [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) +AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes") + + +# Configure libtool +AM_PROG_LIBTOOL +AC_SUBST(enable_shared) +AC_SUBST(enable_static) + +AM_MAINTAINER_MODE + +# For libtool versioning info, format is CURRENT:REVISION:AGE +libtool_VERSION=1:0:0 +AC_SUBST(libtool_VERSION) + +# Check header files. +AC_STDC_HEADERS +AC_HEADER_TIME +ACX_HEADER_STRING +AC_CHECK_HEADERS(unistd.h semaphore.h sys/time.h malloc.h) + +GCC_HEADER_STDINT(gstdint.h) + +GCC_AC_FUNC_MMAP_BLACKLIST + +AC_C_BIGENDIAN +# I don't like the default behaviour of WORDS_BIGENDIAN undefined for LE. +AH_BOTTOM( +[#ifndef WORDS_BIGENDIAN +#define WORDS_BIGENDIAN 0 +#endif]) + +# Check to see if -pthread or -lpthread is needed. Prefer the former. +# In case the pthread.h system header is not found, this test will fail. +XPCFLAGS="" +CFLAGS="$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=" -Wc,-pthread"], + [CFLAGS="$save_CFLAGS" LIBS="-lpthread $LIBS" + AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [#include <pthread.h> + void *g(void *d) { return NULL; }], + [pthread_t t; pthread_create(&t,NULL,g,NULL);])], + [], + [AC_MSG_ERROR([Pthreads are required to build libitm])])]) + +# Check for functions needed. +AC_CHECK_FUNCS(strtoull memalign posix_memalign) + +# Check for broken semaphore implementation on darwin. +# sem_init returns: sem_init error: Function not implemented. +case "$host" in + *-darwin*) + AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1, + Define if the POSIX Semaphores do not work on your system.) + ;; +esac + +GCC_LINUX_FUTEX(:) + +# See if we support thread-local storage. +GCC_CHECK_TLS + +# See what sort of export controls are availible. +LIBITM_CHECK_ATTRIBUTE_VISIBILITY +LIBITM_CHECK_ATTRIBUTE_DLLEXPORT +LIBITM_CHECK_ATTRIBUTE_ALIAS +LIBITM_ENABLE_SYMVERS + +if test $enable_symvers = gnu; then + AC_DEFINE(LIBITM_GNU_SYMBOL_VERSIONING, 1, + [Define to 1 if GNU symbol versioning is used for libitm.]) +fi + +# Determine the proper ABI type for size_t. +LIBITM_CHECK_SIZE_T_MANGLING + +# Get target configury. +. ${srcdir}/configure.tgt +CFLAGS="$save_CFLAGS $XCFLAGS" + +# Check for __sync_val_compare_and_swap, but only after the target has +# had a chance to set XCFLAGS. +LIBITM_CHECK_SYNC_BUILTINS +LIBITM_CHECK_64BIT_SYNC_BUILTINS + +# Cleanup and exit. +CFLAGS="$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) + +if test ${multilib} = yes; then + multilib_arg="--enable-multilib" +else + multilib_arg= +fi + +# Set up the set of libraries that we need to link against for libitm. +# Note that the GOMP_SELF_SPEC in gcc.c will force -pthread for -fopenmp, +# which will force linkage against -lpthread (or equivalent for the system). +# That's not 100% ideal, but about the best we can do easily. +if test $enable_shared = yes; then + link_itm="-litm %{static: $LIBS}" +else + link_itm="-litm $LIBS" +fi +AC_SUBST(link_itm) + +AM_CONDITIONAL([ARCH_X86], [test "$ARCH" = x86]) +AM_CONDITIONAL([ARCH_FUTEX], [test $enable_linux_futex = yes]) + +AC_CONFIG_FILES(Makefile testsuite/Makefile libitm.spec) +AC_OUTPUT |