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authorH.J. Lu <hjl.tools@gmail.com>2012-01-30 21:13:30 +0000
committerH.J. Lu <hjl.tools@gmail.com>2012-01-30 21:13:30 +0000
commit63887f3df5f9d17a88da98bdd2a761f830d61191 (patch)
tree71ec72c56e337e99215438799e720b3a51f53b87 /gold
parent8fc3fc345540f264ddc61b7d828b62e75e0a5049 (diff)
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Check if -fpic -mtls-dialect=gnu2 works
2012-01-30 H.J. Lu <hongjiu.lu@intel.com> * configure.ac: Check if -fpic -mtls-dialect=gnu2 works. * configure: Regenerated.
Diffstat (limited to 'gold')
-rw-r--r--gold/ChangeLog5
-rwxr-xr-xgold/configure10
-rw-r--r--gold/configure.ac10
3 files changed, 21 insertions, 4 deletions
diff --git a/gold/ChangeLog b/gold/ChangeLog
index 5535812..28ff513 100644
--- a/gold/ChangeLog
+++ b/gold/ChangeLog
@@ -1,3 +1,8 @@
+2012-01-30 H.J. Lu <hongjiu.lu@intel.com>
+
+ * configure.ac: Check if -fpic -mtls-dialect=gnu2 works.
+ * configure: Regenerated.
+
2012-01-27 Ian Lance Taylor <iant@google.com>
* reloc.h (Bits): New class with static functions, copied from
diff --git a/gold/configure b/gold/configure
index aca7cab..b1744a8 100755
--- a/gold/configure
+++ b/gold/configure
@@ -6437,10 +6437,16 @@ fi
save_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -mtls-dialect=gnu2"
+CFLAGS="$CFLAGS -fpic -mtls-dialect=gnu2"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
-int i;
+
+__thread int i;
+void foo (void)
+{
+ i = 10;
+}
+
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
have_tls_gnu2=yes
diff --git a/gold/configure.ac b/gold/configure.ac
index e49bf21..edc5917 100644
--- a/gold/configure.ac
+++ b/gold/configure.ac
@@ -359,8 +359,14 @@ AM_CONDITIONAL(OMP_SUPPORT, test "$gold_cv_c_threadprivate" = "yes")
dnl Test for the -ftls-dialect=gnu2 option.
save_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -mtls-dialect=gnu2"
-AC_COMPILE_IFELSE([int i;], [have_tls_gnu2=yes], [have_tls_gnu2=no])
+CFLAGS="$CFLAGS -fpic -mtls-dialect=gnu2"
+AC_COMPILE_IFELSE([
+__thread int i;
+void foo (void)
+{
+ i = 10;
+}
+], [have_tls_gnu2=yes], [have_tls_gnu2=no])
CFLAGS="$save_CFLAGS"
AM_CONDITIONAL(TLS_GNU2_DIALECT, test "$have_tls_gnu2" = "yes")