Make sure not to re-define __STDC_FORMAT_MACROS.

diff --git a/src/build_log.cc b/src/build_log.cc
index 281b851..589c6da 100644 (file)
--- a/src/build_log.cc
+++ b/src/build_log.cc
@@ -19,7 +19,9 @@
 #include <string.h>
 
 #ifndef _WIN32
+#ifndef __STDC_FORMAT_MACROS
 #define __STDC_FORMAT_MACROS
+#endif
 #include <inttypes.h>
 #include <unistd.h>
 #endif