--- ghostscript-9.14-orig/psi/iapi.h	2014-03-26 13:53:47.000000000 +0100
+++ ghostscript-9.14/psi/iapi.h	2014-08-09 13:56:25.245374500 +0200
@@ -229,6 +229,7 @@
     int argc, char **argv);
 
 #ifdef __WIN32__
+#include <stddef.h>
 GSDLLEXPORT int GSDLLAPI gsapi_init_with_argsA(void *instance,
     int argc, char **argv);