From 739a16c96ee00544ec6d69786331f98b1a24c9ee Mon Sep 17 00:00:00 2001
From: Ben Kibbey <bjk@luxsci.net>
Date: Wed, 24 Oct 2007 08:42:22 -0400
Subject: [PATCH] Make the pthread_mutex_t configure test fail on gcc warnings.

---
 configure.ac | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index b953ca4e..9827edc8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -54,6 +54,8 @@ AC_ARG_ENABLE(locking, AC_HELP_STRING([--disable-locking], [Disable cache mutex
     locking=no, locking=yes)
 
 AC_MSG_CHECKING([if pthread_mutex_t is a complete type])
+TMPCFLAGS="$CFLAGS"
+CFLAGS="-Wall -Werror"
 AC_TRY_COMPILE([pthread.h], [
 		void pthread_test()
 		{
@@ -61,6 +63,7 @@ AC_TRY_COMPILE([pthread.h], [
 		    typeof(*a) *b;
 		}
 		], pthreads_ok=no, pthreads_ok=yes)
+CFLAGS="$TMPCFLAGS"
 
 if test "$pthreads_ok" = "yes"; then
     AC_MSG_RESULT([yes])
@@ -71,7 +74,7 @@ else
 
     if test "$locking" = "yes"; then
 	AC_MSG_ERROR([pthread_mutex_t must be a complete type for cache locking to
-		      work properly. Update your OS or specify --disable-locking.])
+		      work properly. Read README for details.])
     fi
 fi
 
-- 
2.11.4.GIT