--- ffmpeg-1.2.2.orig/libavutil/error.c
+++ ffmpeg-1.2.2/libavutil/error.c
@@ -17,6 +17,7 @@
  */
 
 #undef _GNU_SOURCE
+#define _XOPEN_SOURCE 600
 #include "avutil.h"
 #include "avstring.h"
 #include "common.h"