--- bigloo4.0b/runtime/Clib/csystem.c	2013-08-01 02:50:44.000000000 -0400
+++ bigloo4.0bmod/runtime/Clib/csystem.c	2013-08-10 09:19:56.000000000 -0400
@@ -39,6 +39,7 @@
 #  include <pwd.h>
 #else
 #define uid_t int
+#define gid_t int
 #endif
 
 /*---------------------------------------------------------------------*/