diff options
| author | H.J. Lu <hjl.tools@gmail.com> | 2007-07-11 23:09:22 +0400 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2007-07-11 23:09:22 +0400 |
| commit | 6fc4fe923a8a36df5a1d58f22e69647bdfd83875 (patch) | |
| tree | 4e2b78337de1440afccb96b1e689f73bf09b4bef /config/tls.m4 | |
| parent | c4ccbcce6cb1e5f981d25dffb1eaba7e290de987 (diff) | |
2007-07-06 H.J. Lu <hongjiu.lu@intel.com>
* tls.m4 (GCC_CHECK_CC_TLS): New.
2007-07-05 Sebastian Pop <sebpop@gmail.com>
PR bootstrap/32622
* mh-x86omitfp (BOOT_CFLAGS): Add -fomit-frame-pointer,
don't reset its value.
Diffstat (limited to 'config/tls.m4')
| -rw-r--r-- | config/tls.m4 | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/config/tls.m4 b/config/tls.m4 index c8f3ff0a3..69cf6d4f9 100644 --- a/config/tls.m4 +++ b/config/tls.m4 @@ -73,3 +73,16 @@ AC_DEFUN([GCC_CHECK_TLS], [ AC_DEFINE(HAVE_TLS, 1, [Define to 1 if the target supports thread-local storage.]) fi]) + +dnl Check whether the target assembler supports TLS. +AC_DEFUN([GCC_CHECK_CC_TLS], [ + GCC_ENABLE(tls, yes, [], [Use thread-local storage]) + AC_CACHE_CHECK([whether the target asssembler upports thread-local storage], + have_cc_tls, [ + AC_COMPILE_IFELSE([__thread int a; int b; int main() { return a = b; }], + [have_cc_tls=yes], [have_cc_tls=no])] + )]) + if test "$enable_tls $have_cc_tls" = "yes yes"; then + AC_DEFINE(HAVE_CC_TLS, 1, + [Define to 1 if the target assembler supports thread-local storage.]) + fi]) |