diff options
Diffstat (limited to 'gcc-4.8.1/libitm/acinclude.m4')
| -rw-r--r-- | gcc-4.8.1/libitm/acinclude.m4 | 440 |
1 files changed, 0 insertions, 440 deletions
diff --git a/gcc-4.8.1/libitm/acinclude.m4 b/gcc-4.8.1/libitm/acinclude.m4 deleted file mode 100644 index fe32fe3e4..000000000 --- a/gcc-4.8.1/libitm/acinclude.m4 +++ /dev/null @@ -1,440 +0,0 @@ -dnl ---------------------------------------------------------------------- -dnl This whole bit snagged from libgfortran. - -dnl Check whether the target supports __sync_*_compare_and_swap. -AC_DEFUN([LIBITM_CHECK_SYNC_BUILTINS], [ - AC_CACHE_CHECK([whether the target supports __sync_*_compare_and_swap], - libitm_cv_have_sync_builtins, [ - AC_TRY_LINK([], [int foo, bar; bar = __sync_val_compare_and_swap(&foo, 0, 1);], - libitm_cv_have_sync_builtins=yes, libitm_cv_have_sync_builtins=no)]) - if test $libitm_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 64-bit __sync_*_compare_and_swap. -AC_DEFUN([LIBITM_CHECK_64BIT_SYNC_BUILTINS], [ - AC_CACHE_CHECK([whether the target supports 64-bit __sync_*_compare_and_swap], - libitm_cv_have_64bit_sync_builtins, [ - AC_TRY_LINK([#include <stdint.h>], - [uint64_t foo, bar; - bar = __sync_val_compare_and_swap(&foo, 0, 1);], - libitm_cv_have_64bit_sync_builtins=yes, - libitm_cv_have_64bit_sync_builtins=no)]) - if test $libitm_cv_have_64bit_sync_builtins = yes; then - AC_DEFINE(HAVE_64BIT_SYNC_BUILTINS, 1, - [Define to 1 if the target supports 64-bit __sync_*_compare_and_swap]) - fi]) - -dnl Check whether the target supports hidden visibility. -AC_DEFUN([LIBITM_CHECK_ATTRIBUTE_VISIBILITY], [ - AC_CACHE_CHECK([whether the target supports hidden visibility], - libitm_cv_have_attribute_visibility, [ - save_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS -Werror" - AC_TRY_COMPILE([void __attribute__((visibility("hidden"))) foo(void) { }], - [], libitm_cv_have_attribute_visibility=yes, - libitm_cv_have_attribute_visibility=no) - CFLAGS="$save_CFLAGS"]) - if test $libitm_cv_have_attribute_visibility = yes; then - AC_DEFINE(HAVE_ATTRIBUTE_VISIBILITY, 1, - [Define to 1 if the target supports __attribute__((visibility(...))).]) - fi]) - -dnl Check whether the target supports dllexport -AC_DEFUN([LIBITM_CHECK_ATTRIBUTE_DLLEXPORT], [ - AC_CACHE_CHECK([whether the target supports dllexport], - libitm_cv_have_attribute_dllexport, [ - save_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS -Werror" - AC_TRY_COMPILE([void __attribute__((dllexport)) foo(void) { }], - [], libitm_cv_have_attribute_dllexport=yes, - libitm_cv_have_attribute_dllexport=no) - CFLAGS="$save_CFLAGS"]) - if test $libitm_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([LIBITM_CHECK_ATTRIBUTE_ALIAS], [ - AC_CACHE_CHECK([whether the target supports symbol aliases], - libitm_cv_have_attribute_alias, [ - AC_TRY_LINK([ -void foo(void) { } -extern void bar(void) __attribute__((alias("foo")));], - [bar();], libitm_cv_have_attribute_alias=yes, libitm_cv_have_attribute_alias=no)]) - if test $libitm_cv_have_attribute_alias = yes; then - AC_DEFINE(HAVE_ATTRIBUTE_ALIAS, 1, - [Define to 1 if the target supports __attribute__((alias(...))).]) - fi]) - -dnl Check how size_t is mangled. -AC_DEFUN([LIBITM_CHECK_SIZE_T_MANGLING], [ - AC_CACHE_CHECK([how size_t is mangled], - libitm_cv_size_t_mangling, [ - AC_TRY_COMPILE([], [extern __SIZE_TYPE__ x; extern unsigned long x;], - [libitm_cv_size_t_mangling=m], [ - AC_TRY_COMPILE([], [extern __SIZE_TYPE__ x; extern unsigned int x;], - [libitm_cv_size_t_mangling=j], [ - AC_TRY_COMPILE([], - [extern __SIZE_TYPE__ x; extern unsigned long long x;], - [libitm_cv_size_t_mangling=y], [ - AC_TRY_COMPILE([], - [extern __SIZE_TYPE__ x; extern unsigned short x;], - [libitm_cv_size_t_mangling=t], - [libitm_cv_size_t_mangling=x]) - ]) - ]) - ]) - ]) - if test $libitm_cv_size_t_mangling = x; then - AC_MSG_ERROR([Unknown underlying type for size_t]) - fi - AC_DEFINE_UNQUOTED(MANGLE_SIZE_T, [$libitm_cv_size_t_mangling], - [Define to the letter to which size_t is mangled.]) -]) - -dnl Check if as supports AVX instructions. -AC_DEFUN([LIBITM_CHECK_AS_AVX], [ -case "${target_cpu}" in -i[[34567]]86 | x86_64) - AC_CACHE_CHECK([if the assembler supports AVX], libitm_cv_as_avx, [ - AC_TRY_COMPILE([], [asm("vzeroupper");], - [libitm_cv_as_avx=yes], [libitm_cv_as_avx=no]) - ]) - if test x$libitm_cv_as_avx = xyes; then - AC_DEFINE(HAVE_AS_AVX, 1, [Define to 1 if the assembler supports AVX.]) - fi - ;; -esac]) - -dnl Check if as supports RTM instructions. -AC_DEFUN([LIBITM_CHECK_AS_RTM], [ -case "${target_cpu}" in -i[[34567]]86 | x86_64) - AC_CACHE_CHECK([if the assembler supports RTM], libitm_cv_as_rtm, [ - AC_TRY_COMPILE([], [asm("1: xbegin 1b; xend");], - [libitm_cv_as_rtm=yes], [libitm_cv_as_rtm=no]) - ]) - if test x$libitm_cv_as_rtm = xyes; then - AC_DEFINE(HAVE_AS_RTM, 1, [Define to 1 if the assembler supports RTM.]) - fi - ;; -esac]) - -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 LIBITM_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([LIBITM_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],-,_)[=][$2]) -m4_undefine([_g_switch])dnl -m4_undefine([_g_help])dnl -]) - - -dnl -dnl If GNU ld is in use, check to see if tricky linker opts can be used. If -dnl the native linker is in use, all variables will be defined to something -dnl safe (like an empty string). -dnl -dnl Defines: -dnl SECTION_LDFLAGS='-Wl,--gc-sections' if possible -dnl OPT_LDFLAGS='-Wl,-O1' if possible -dnl LD (as a side effect of testing) -dnl Sets: -dnl with_gnu_ld -dnl libitm_ld_is_gold (possibly) -dnl libitm_gnu_ld_version (possibly) -dnl -dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will -dnl set libitm_gnu_ld_version to 12345. Zeros cause problems. -dnl -AC_DEFUN([LIBITM_CHECK_LINKER_FEATURES], [ - # If we're not using GNU ld, then there's no point in even trying these - # tests. Check for that first. We should have already tested for gld - # by now (in libtool), but require it now just to be safe... - test -z "$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. - libitm_ld_is_gold=no - if $LD --version 2>/dev/null | grep 'GNU gold'> /dev/null 2>&1; then - libitm_ld_is_gold=yes - fi - changequote(,) - ldver=`$LD --version 2>/dev/null | - sed -e 's/GNU gold /GNU ld /;s/GNU ld version /GNU ld /;s/GNU ld ([^)]*) /GNU ld /;s/GNU ld \([0-9.][0-9.]*\).*/\1/; q'` - changequote([,]) - libitm_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 $OPT_LDFLAGS" - fi - - AC_SUBST(SECTION_LDFLAGS) - AC_SUBST(OPT_LDFLAGS) -]) - - -dnl -dnl Check if the linker used supports linker maps to clear hardware -dnl capabilities. This is only supported by Sun ld at the moment. -dnl -dnl Defines: -dnl HWCAP_LDFLAGS='-Wl,-M,clearcap.map' if possible -dnl LD (as a side effect of testing) -dnl -AC_DEFUN([LIBITM_CHECK_LINKER_HWCAP], [ - test -z "$HWCAP_LDFLAGS" && HWCAP_LDFLAGS='' - AC_REQUIRE([AC_PROG_LD]) - - ac_save_LDFLAGS="$LDFLAGS" - LDFLAGS="$LFLAGS -Wl,-M,$srcdir/clearcap.map" - - AC_MSG_CHECKING([for ld that supports -Wl,-M,mapfile]) - AC_TRY_LINK([], [return 0;], [ac_hwcap_ldflags=yes],[ac_hwcap_ldflags=no]) - if test "$ac_hwcap_ldflags" = "yes"; then - HWCAP_LDFLAGS="-Wl,-M,$srcdir/clearcap.map $HWCAP_LDFLAGS" - fi - AC_MSG_RESULT($ac_hwcap_ldflags) - - LDFLAGS="$ac_save_LDFLAGS" - - AC_SUBST(HWCAP_LDFLAGS) - - AM_CONDITIONAL(HAVE_HWCAP, test $ac_hwcap_ldflags != no) -]) - - -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: LIBITM_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([LIBITM_ENABLE_SYMVERS], [ - -LIBITM_ENABLE(symvers,yes,[=STYLE], - [enables symbol versioning of the shared library], - [permit yes|no|gnu*|sun]) - -# If we never went through the LIBITM_CHECK_LINKER_FEATURES macro, then we -# don't know enough about $LD to do tricks... -AC_REQUIRE([LIBITM_CHECK_LINKER_FEATURES]) - -# Turn a 'yes' into a suitable default. -if test x$enable_symvers = xyes ; then - # FIXME The following test is too strict, in theory. - if test $enable_shared = no || test "x$LD" = x; then - enable_symvers=no - else - if test $with_gnu_ld = yes ; then - enable_symvers=gnu - else - case ${target_os} in - # Sun symbol versioning exists since Solaris 2.5. - solaris2.[[5-9]]* | solaris2.1[[0-9]]*) - enable_symvers=sun ;; - *) - enable_symvers=no ;; - esac - fi - fi -fi - -# Check if 'sun' was requested on non-Solaris 2 platforms. -if test x$enable_symvers = xsun ; then - case ${target_os} in - solaris2*) - # All fine. - ;; - *) - # Unlikely to work. - AC_MSG_WARN([=== You have requested Sun symbol versioning, but]) - AC_MSG_WARN([=== you are not targetting Solaris 2.]) - AC_MSG_WARN([=== Symbol versioning will be disabled.]) - enable_symvers=no - ;; - esac -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;], libitm_shared_libgcc=yes, libitm_shared_libgcc=no) - CFLAGS="$ac_save_CFLAGS" - if test $libitm_shared_libgcc = no; then - cat > conftest.c <<EOF -int main (void) { return 0; } -EOF -changequote(,)dnl - libitm_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ - -shared -shared-libgcc -o conftest.so \ - conftest.c -v 2>&1 >/dev/null \ - | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'` -changequote([,])dnl - rm -f conftest.c conftest.so - if test x${libitm_libgcc_s_suffix+set} = xset; then - CFLAGS=" -lgcc_s$libitm_libgcc_s_suffix" - AC_TRY_LINK(, [return 0;], libitm_shared_libgcc=yes) - CFLAGS="$ac_save_CFLAGS" - fi - fi - AC_MSG_RESULT($libitm_shared_libgcc) -fi - -# For GNU ld, we need at least this version. The format is described in -# LIBITM_CHECK_LINKER_FEATURES above. -libitm_min_gnu_ld_version=21400 -# XXXXXXXXXXX libitm_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 != no && test $libitm_shared_libgcc = yes; then - if test $with_gnu_ld = yes; then - if test $libitm_gnu_ld_version -ge $libitm_min_gnu_ld_version ; then - enable_symvers=gnu - elif test $libitm_ld_is_gold = yes ; then - enable_symvers=gnu - else - # The right tools, the right setup, but too old. Fallbacks? - AC_MSG_WARN(=== Linker version $libitm_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(=== $libitm_min_gnu_ld_version or later and rebuild GCC.) - if test $libitm_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 - elif test $enable_symvers = sun; then - : All interesting versions of Sun ld support sun style symbol versioning. - 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 - -AM_CONDITIONAL(LIBITM_BUILD_VERSIONED_SHLIB, test $enable_symvers != no) -AM_CONDITIONAL(LIBITM_BUILD_VERSIONED_SHLIB_GNU, test $enable_symvers = gnu) -AM_CONDITIONAL(LIBITM_BUILD_VERSIONED_SHLIB_SUN, test $enable_symvers = sun) -AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers) -]) |