From 24ead2ee7fc7509afe4bfcc15b1c1b06177cf1f3 Mon Sep 17 00:00:00 2001
From: Simon Ruderich <simon@ruderich.org>
Date: Tue, 13 May 2014 18:32:56 +0200
Subject: [PATCH] configure.ac: warn if TLS is not available

---
 configure.ac | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configure.ac b/configure.ac
index 6ef50f4..469df07 100644
--- a/configure.ac
+++ b/configure.ac
@@ -92,3 +92,8 @@ AM_CONDITIONAL([HAVE_VFORK],[test "x$ac_cv_func_vfork_works" = xyes])
 
 AC_CONFIG_FILES([Makefile src/Makefile tests/Makefile])
 AC_OUTPUT
+
+if test x"$ac_cv_tls" != x"none"; then
+    AC_MSG_WARN([thread-local storage not supported by compiler, \
+possible race condition in threaded programs])
+fi
-- 
2.43.2