--- configure.orig	2013-09-07 22:11:27.210621324 +0200
+++ configure	2013-09-07 22:11:52.912624338 +0200
@@ -22839,7 +22839,7 @@
 }
 _ACEOF
 if ac_fn_c_try_compile "$LINENO"; then :
-  ac_cv_tls=$kw
+  ac_cv_tls=$kw; break ;
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
         done