diff options
Diffstat (limited to 'gcc-4.4.3/libgomp/acinclude.m4')
| -rw-r--r-- | gcc-4.4.3/libgomp/acinclude.m4 | 320 |
1 files changed, 0 insertions, 320 deletions
diff --git a/gcc-4.4.3/libgomp/acinclude.m4 b/gcc-4.4.3/libgomp/acinclude.m4 deleted file mode 100644 index ac450ca9b..000000000 --- a/gcc-4.4.3/libgomp/acinclude.m4 +++ /dev/null @@ -1,320 +0,0 @@ -dnl ---------------------------------------------------------------------- -dnl This whole bit snagged from libgfortran. - -dnl Check whether the target supports __sync_*_compare_and_swap. -AC_DEFUN([LIBGOMP_CHECK_SYNC_BUILTINS], [ - AC_CACHE_CHECK([whether the target supports __sync_*_compare_and_swap], - libgomp_cv_have_sync_builtins, [ - AC_TRY_LINK([], [int foo, bar; bar = __sync_val_compare_and_swap(&foo, 0, 1);], - libgomp_cv_have_sync_builtins=yes, libgomp_cv_have_sync_builtins=no)]) - if test $libgomp_cv_have_sync_builtins = yes; then - AC_DEFINE(HAVE_SYNC_BUILTINS, 1, - [Define to 1 if the target supports __sync_*_compare_and_swap]) - fi]) - -dnl Check whether the target supports hidden visibility. -AC_DEFUN([LIBGOMP_CHECK_ATTRIBUTE_VISIBILITY], [ - AC_CACHE_CHECK([whether the target supports hidden visibility], - libgomp_cv_have_attribute_visibility, [ - save_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS -Werror" - AC_TRY_COMPILE([void __attribute__((visibility("hidden"))) foo(void) { }], - [], libgomp_cv_have_attribute_visibility=yes, - libgomp_cv_have_attribute_visibility=no) - CFLAGS="$save_CFLAGS"]) - if test $libgomp_cv_have_attribute_visibility = yes; then - AC_DEFINE(HAVE_ATTRIBUTE_VISIBILITY, 1, - [Define to 1 if the target supports __attribute__((visibility(...))).]) - fi]) - -dnl Check whether the target supports dllexport -AC_DEFUN([LIBGOMP_CHECK_ATTRIBUTE_DLLEXPORT], [ - AC_CACHE_CHECK([whether the target supports dllexport], - libgomp_cv_have_attribute_dllexport, [ - save_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS -Werror" - AC_TRY_COMPILE([void __attribute__((dllexport)) foo(void) { }], - [], libgomp_cv_have_attribute_dllexport=yes, - libgomp_cv_have_attribute_dllexport=no) - CFLAGS="$save_CFLAGS"]) - if test $libgomp_cv_have_attribute_dllexport = yes; then - AC_DEFINE(HAVE_ATTRIBUTE_DLLEXPORT, 1, - [Define to 1 if the target supports __attribute__((dllexport)).]) - fi]) - -dnl Check whether the target supports symbol aliases. -AC_DEFUN([LIBGOMP_CHECK_ATTRIBUTE_ALIAS], [ - AC_CACHE_CHECK([whether the target supports symbol aliases], - libgomp_cv_have_attribute_alias, [ - AC_TRY_LINK([ -void foo(void) { } -extern void bar(void) __attribute__((alias("foo")));], - [bar();], libgomp_cv_have_attribute_alias=yes, libgomp_cv_have_attribute_alias=no)]) - if test $libgomp_cv_have_attribute_alias = yes; then - AC_DEFINE(HAVE_ATTRIBUTE_ALIAS, 1, - [Define to 1 if the target supports __attribute__((alias(...))).]) - fi]) - -sinclude(../libtool.m4) -dnl The lines below arrange for aclocal not to bring an installed -dnl libtool.m4 into aclocal.m4, while still arranging for automake to -dnl add a definition of LIBTOOL to Makefile.in. -ifelse(,,,[AC_SUBST(LIBTOOL) -AC_DEFUN([AM_PROG_LIBTOOL]) -AC_DEFUN([AC_LIBTOOL_DLOPEN]) -AC_DEFUN([AC_PROG_LD]) -]) - -dnl ---------------------------------------------------------------------- -dnl This whole bit snagged from libstdc++-v3. - -dnl -dnl LIBGOMP_ENABLE -dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING) -dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c) -dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER) -dnl -dnl See docs/html/17_intro/configury.html#enable for documentation. -dnl -m4_define([LIBGOMP_ENABLE],[dnl -m4_define([_g_switch],[--enable-$1])dnl -m4_define([_g_help],[AC_HELP_STRING(_g_switch$3,[$4 @<:@default=$2@:>@])])dnl - AC_ARG_ENABLE($1,_g_help, - m4_bmatch([$5], - [^permit ], - [[ - case "$enableval" in - m4_bpatsubst([$5],[permit ])) ;; - *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;; - dnl Idea for future: generate a URL pointing to - dnl "onlinedocs/configopts.html#whatever" - esac - ]], - [^$], - [[ - case "$enableval" in - yes|no) ;; - *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;; - esac - ]], - [[$5]]), - [enable_]m4_bpatsubst([$1],-,_)[=][$2]) -m4_undefine([_g_switch])dnl -m4_undefine([_g_help])dnl -]) - - -dnl -dnl If GNU ld is in use, check to see if tricky linker opts can be used. If -dnl the native linker is in use, all variables will be defined to something -dnl safe (like an empty string). -dnl -dnl Defines: -dnl SECTION_LDFLAGS='-Wl,--gc-sections' if possible -dnl OPT_LDFLAGS='-Wl,-O1' if possible -dnl LD (as a side effect of testing) -dnl Sets: -dnl with_gnu_ld -dnl libgomp_ld_is_gold (possibly) -dnl libgomp_gnu_ld_version (possibly) -dnl -dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will -dnl set libgomp_gnu_ld_version to 12345. Zeros cause problems. -dnl -AC_DEFUN([LIBGOMP_CHECK_LINKER_FEATURES], [ - # If we're not using GNU ld, then there's no point in even trying these - # tests. Check for that first. We should have already tested for gld - # by now (in libtool), but require it now just to be safe... - test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS='' - test -z "$OPT_LDFLAGS" && OPT_LDFLAGS='' - AC_REQUIRE([AC_PROG_LD]) - AC_REQUIRE([AC_PROG_AWK]) - - # The name set by libtool depends on the version of libtool. Shame on us - # for depending on an impl detail, but c'est la vie. Older versions used - # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on - # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually - # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't - # set (hence we're using an older libtool), then set it. - if test x${with_gnu_ld+set} != xset; then - if test x${ac_cv_prog_gnu_ld+set} != xset; then - # We got through "ac_require(ac_prog_ld)" and still not set? Huh? - with_gnu_ld=no - else - with_gnu_ld=$ac_cv_prog_gnu_ld - fi - fi - - # Start by getting the version number. I think the libtool test already - # does some of this, but throws away the result. - libgomp_ld_is_gold=no - if $LD --version 2>/dev/null | grep 'GNU gold'> /dev/null 2>&1; then - libgomp_ld_is_gold=yes - fi - changequote(,) - ldver=`$LD --version 2>/dev/null | head -1 | \ - sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'` - changequote([,]) - libgomp_gnu_ld_version=`echo $ldver | \ - $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'` - - # Set --gc-sections. - if test "$with_gnu_ld" = "notbroken"; then - # GNU ld it is! Joy and bunny rabbits! - - # All these tests are for C++; save the language and the compiler flags. - # Need to do this so that g++ won't try to link in libstdc++ - ac_test_CFLAGS="${CFLAGS+set}" - ac_save_CFLAGS="$CFLAGS" - CFLAGS='-x c++ -Wl,--gc-sections' - - # Check for -Wl,--gc-sections - # XXX This test is broken at the moment, as symbols required for linking - # are now in libsupc++ (not built yet). In addition, this test has - # cored on solaris in the past. In addition, --gc-sections doesn't - # really work at the moment (keeps on discarding used sections, first - # .eh_frame and now some of the glibc sections for iconv). - # Bzzzzt. Thanks for playing, maybe next time. - AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections]) - AC_TRY_RUN([ - int main(void) - { - try { throw 1; } - catch (...) { }; - return 0; - } - ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes]) - if test "$ac_test_CFLAGS" = set; then - CFLAGS="$ac_save_CFLAGS" - else - # this is the suspicious part - CFLAGS='' - fi - if test "$ac_sectionLDflags" = "yes"; then - SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS" - fi - AC_MSG_RESULT($ac_sectionLDflags) - fi - - # Set linker optimization flags. - if test x"$with_gnu_ld" = x"yes"; then - OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS" - fi - - AC_SUBST(SECTION_LDFLAGS) - AC_SUBST(OPT_LDFLAGS) -]) - - -dnl -dnl Add version tags to symbols in shared library (or not), additionally -dnl marking other symbols as private/local (or not). -dnl -dnl --enable-symvers=style adds a version script to the linker call when -dnl creating the shared library. The choice of version script is -dnl controlled by 'style'. -dnl --disable-symvers does not. -dnl + Usage: LIBGOMP_ENABLE_SYMVERS[(DEFAULT)] -dnl Where DEFAULT is either 'yes' or 'no'. Passing `yes' tries to -dnl choose a default style based on linker characteristics. Passing -dnl 'no' disables versioning. -dnl -AC_DEFUN([LIBGOMP_ENABLE_SYMVERS], [ - -LIBGOMP_ENABLE(symvers,yes,[=STYLE], - [enables symbol versioning of the shared library], - [permit yes|no|gnu]) - -# If we never went through the LIBGOMP_CHECK_LINKER_FEATURES macro, then we -# don't know enough about $LD to do tricks... -AC_REQUIRE([LIBGOMP_CHECK_LINKER_FEATURES]) -# FIXME The following test is too strict, in theory. -if test $enable_shared = no || - test "x$LD" = x || - test x$libgomp_gnu_ld_version = x; then - enable_symvers=no -fi - -# Check to see if libgcc_s exists, indicating that shared libgcc is possible. -if test $enable_symvers != no; then - AC_MSG_CHECKING([for shared libgcc]) - ac_save_CFLAGS="$CFLAGS" - CFLAGS=' -lgcc_s' - AC_TRY_LINK(, [return 0;], libgomp_shared_libgcc=yes, libgomp_shared_libgcc=no) - CFLAGS="$ac_save_CFLAGS" - if test $libgomp_shared_libgcc = no; then - cat > conftest.c <<EOF -int main (void) { return 0; } -EOF -changequote(,)dnl - libgomp_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ - -shared -shared-libgcc -o conftest.so \ - conftest.c -v 2>&1 >/dev/null \ - | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'` -changequote([,])dnl - rm -f conftest.c conftest.so - if test x${libgomp_libgcc_s_suffix+set} = xset; then - CFLAGS=" -lgcc_s$libgomp_libgcc_s_suffix" - AC_TRY_LINK(, [return 0;], libgomp_shared_libgcc=yes) - CFLAGS="$ac_save_CFLAGS" - fi - fi - AC_MSG_RESULT($libgomp_shared_libgcc) -fi - -# For GNU ld, we need at least this version. The format is described in -# LIBGOMP_CHECK_LINKER_FEATURES above. -libgomp_min_gnu_ld_version=21400 -# XXXXXXXXXXX libgomp_gnu_ld_version=21390 - -# Check to see if unspecified "yes" value can win, given results above. -# Change "yes" into either "no" or a style name. -if test $enable_symvers = yes; then - if test $with_gnu_ld = yes && - test $libgomp_shared_libgcc = yes; - then - if test $libgomp_gnu_ld_version -ge $libgomp_min_gnu_ld_version ; then - enable_symvers=gnu - elif test $libgomp_ld_is_gold = yes ; then - enable_symvers=gnu - else - # The right tools, the right setup, but too old. Fallbacks? - AC_MSG_WARN(=== Linker version $libgomp_gnu_ld_version is too old for) - AC_MSG_WARN(=== full symbol versioning support in this release of GCC.) - AC_MSG_WARN(=== You would need to upgrade your binutils to version) - AC_MSG_WARN(=== $libgomp_min_gnu_ld_version or later and rebuild GCC.) - if test $libgomp_gnu_ld_version -ge 21200 ; then - # Globbing fix is present, proper block support is not. - dnl AC_MSG_WARN([=== Dude, you are soooo close. Maybe we can fake it.]) - dnl enable_symvers=??? - AC_MSG_WARN([=== Symbol versioning will be disabled.]) - enable_symvers=no - else - # 2.11 or older. - AC_MSG_WARN([=== Symbol versioning will be disabled.]) - enable_symvers=no - fi - fi - else - # just fail for now - AC_MSG_WARN([=== You have requested some kind of symbol versioning, but]) - AC_MSG_WARN([=== either you are not using a supported linker, or you are]) - AC_MSG_WARN([=== not building a shared libgcc_s (which is required).]) - AC_MSG_WARN([=== Symbol versioning will be disabled.]) - enable_symvers=no - fi -fi - -AC_CACHE_CHECK([whether the target supports .symver directive], - libgomp_cv_have_as_symver_directive, [ - AC_TRY_COMPILE([void foo (void); __asm (".symver foo, bar@SYMVER");], - [], libgomp_cv_have_as_symver_directive=yes, - libgomp_cv_have_as_symver_directive=no)]) -if test $libgomp_cv_have_as_symver_directive = yes; then - AC_DEFINE(HAVE_AS_SYMVER_DIRECTIVE, 1, - [Define to 1 if the target assembler supports .symver directive.]) -fi - -AM_CONDITIONAL(LIBGOMP_BUILD_VERSIONED_SHLIB, test $enable_symvers != no) -AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers) -]) |