[FFmpeg-cvslog] configure: check that pthreads is compatible with compiler.

[Reimar Döffinger]

ffmpeg | branch: master | Reimar Döffinger <Reimar.Doeffinger at gmx.de> | Mon Dec 30 00:47:12 2013 +0100| [311f61e1b4d508eb31c4c82c3dcd8137da4111d4] | committer: Reimar Döffinger

configure: check that pthreads is compatible with compiler.

In particular the mutex initialization for example won't actually
compile with e.g. gcc 2.95.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger at gmx.de>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=311f61e1b4d508eb31c4c82c3dcd8137da4111d4
---

 configure |    1 +
 1 file changed, 1 insertion(+)

diff --git a/configure b/configure
index 2604ae7..de2d87a 100755
--- a/configure
+++ b/configure
@@ -4359,6 +4359,7 @@ if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
     elif ! check_func pthread_join && ! check_func pthread_create; then
         disable pthreads
     fi
+    check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
 fi
 
 for thread in $THREADS_LIST; do