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authorH.J. Lu <hjl@gcc.gnu.org>2007-07-06 07:00:46 -0700
committerH.J. Lu <hjl@gcc.gnu.org>2007-07-06 07:00:46 -0700
commit6f461e76da5ea2b94ec1f8a9283ca1e2779a5cb0 (patch)
tree41af967850b0489a1585cb2751cc5c75b0cb21a3 /config
parent374d961c0df2af3d7fc3367d63daec408b09d148 (diff)
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tls.m4 (GCC_CHECK_CC_TLS): New.
config/ 2007-07-06 H.J. Lu <hongjiu.lu@intel.com> * tls.m4 (GCC_CHECK_CC_TLS): New. libgcc/ 2007-07-06 H.J. Lu <hongjiu.lu@intel.com> * config.host (tmake_file): Add t-tls for i[34567]86-*-linux* and x86_64-*-linux*. * config/t-tls: New file. * Makefile.in (INTERNAL_CFLAGS): Add @set_have_cc_tls@. * configure.ac: Include ../config/enable.m4 and ../config/tls.m4. Use GCC_CHECK_CC_TLS to check if assembler supports TLS and substitute set_have_cc_tls. * configure: Regenerated. libbid/ 2007-07-06 H.J. Lu <hongjiu.lu@intel.com> Updated from Intel BID library: * bid_conf.h (BID_THREAD): Defined only if both HAVE_CC_TLS and USE_TLS are defined. From-SVN: r126416
Diffstat (limited to 'config')
-rw-r--r--config/ChangeLog6
-rw-r--r--config/tls.m413
2 files changed, 18 insertions, 1 deletions
diff --git a/config/ChangeLog b/config/ChangeLog
index e75bedd..ffa8a92c 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,7 +1,11 @@
+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
- * config/mh-x86omitfp (BOOT_CFLAGS): Add -fomit-frame-pointer,
+ * mh-x86omitfp (BOOT_CFLAGS): Add -fomit-frame-pointer,
don't reset its value.
2007-06-27 Mike Stump <mrs@apple.com>
diff --git a/config/tls.m4 b/config/tls.m4
index c8f3ff0..69cf6d4 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])