avutil/timestamp: Warn about missing __STDC_FORMAT_MACROS for C++ use

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
11 years ago · 8b02dfd37c
parent f385a099c1
commit 8b02dfd37c
1 changed files with 4 additions and 0 deletions
--- a/libavutil/timestamp.h
+++ b/libavutil/timestamp.h
@ -26,6 +26,10 @@

 #include "common.h"

+#if defined(__cplusplus) && !defined(__STDC_FORMAT_MACROS) && !defined(PRId64)
+#error missing -D__STDC_FORMAT_MACROS / #define __STDC_FORMAT_MACROS
+#endif
+
 #define AV_TS_MAX_STRING_SIZE 32

 /**