--- rtmpdump/librtmp/log.h.orig	2014-03-02 18:20:23.000000000 +0000
+++ rtmpdump/librtmp/log.h	2014-03-12 09:23:45.011220200 +0000
@@ -49,9 +49,9 @@
 void RTMP_LogSetCallback(RTMP_LogCallback *cb);
 void RTMP_LogSetOutput(FILE *file);
 #ifdef __GNUC__
-void RTMP_LogPrintf(const char *format, ...) __attribute__ ((__format__ (__printf__, 1, 2)));
-void RTMP_LogStatus(const char *format, ...) __attribute__ ((__format__ (__printf__, 1, 2)));
-void RTMP_Log(int level, const char *format, ...) __attribute__ ((__format__ (__printf__, 2, 3)));
+void RTMP_LogPrintf(const char *format, ...) __attribute__ ((__format__ (gnu_printf, 1, 2)));
+void RTMP_LogStatus(const char *format, ...) __attribute__ ((__format__ (gnu_printf, 1, 2)));
+void RTMP_Log(int level, const char *format, ...) __attribute__ ((__format__ (gnu_printf, 2, 3)));
 #else
 void RTMP_LogPrintf(const char *format, ...);
 void RTMP_LogStatus(const char *format, ...);