--- a/libmng_types.h	2013-01-19 22:45:24.000000000 -0500
+++ b/libmng_types.h	2013-11-21 13:21:24.992417961 -0500
@@ -204,6 +204,8 @@
 #define HAVE_BOOLEAN
 typedef int boolean;
 #endif
+#include <stdio.h>
+
 #include <jpeglib.h>
 #endif /* MNG_INCLUDE_IJG6B */