From c30a4a18ee3656adab5b9ae5aad92cabfcade372 Mon Sep 17 00:00:00 2001
From: Matthias Ringwald <mringwal@inf.ethz.ch>
Date: Wed, 2 Jul 2008 17:56:40 +0100
Subject: fix pthread recursive mutex detection (for mingw32)

---
 m4/pthreads.m4 | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'm4')

diff --git a/m4/pthreads.m4 b/m4/pthreads.m4
index 653a496da..8438cde0b 100644
--- a/m4/pthreads.m4
+++ b/m4/pthreads.m4
@@ -48,7 +48,6 @@ AC_DEFUN([CC_PTHREAD_FLAGS], [
     [ac_save_CFLAGS="$CFLAGS"
      ac_save_LIBS="$LIBS"
      CFLAGS="$CFLAGS $cc_cv_werror $PTHREAD_CFLAGS"
-     
      LIBS="$LIBS $PTHREAD_LIBS"
      AC_LINK_IFELSE(
        [AC_LANG_PROGRAM(
@@ -79,7 +78,9 @@ AC_DEFUN([CC_PTHREAD_RECURSIVE_MUTEX], [
   AC_CACHE_CHECK(
     [for recursive mutex support in pthread],
     [cc_cv_pthread_recursive_mutex],
-    [ac_save_LIBS="$LIBS"
+    [ac_save_CFLAGS="$CFLAGS"
+     ac_save_LIBS="$LIBS"
+     CFLAGS="$CFLAGS $cc_cv_werror $PTHREAD_CFLAGS"
      LIBS="$LIBS $PTHREAD_LIBS"
      AC_COMPILE_IFELSE(
        [AC_LANG_PROGRAM([
@@ -94,6 +95,7 @@ int main() {
 	  ],
 	  [cc_cv_pthread_recursive_mutex=yes],
 	  [cc_cv_pthread_recursive_mutex=no])
+     CFLAGS="$ac_save_CFLAGS"
      LIBS="$ac_save_LIBS"
     ])
 
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