diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index c4f26c4e..7c8f3888 100644 --- a/configure.ac +++ b/configure.ac @@ -118,6 +118,18 @@ else AC_MSG_RESULT([no]) fi +AC_MSG_CHECKING([whether $CC knows __thread]) +AC_LANG_CONFTEST([static __thread int a = 6; int main() { a = 5; }]) +$CC conftest.c $CFLAGS -o conftest > /dev/null 2> /dev/null +ret=$? +rm -f conftest.o conftest +if test $ret -eq 0 ; then + AC_DEFINE([HAVE_TLS_BUILTIN], 1, [Have __thread().]) + AC_MSG_RESULT([yes]) +else + AC_MSG_RESULT([no]) +fi + #### libtool stuff #### AC_LTDL_ENABLE_INSTALL |