gentoo-overlay/dev-vcs/cssc/files/cssc-1.3.0-gcc47.patch

--- a/src/file.h
+++ b/src/file.h
@@ -31,6 +31,7 @@
 #define CSSC__FILE_H__
 
 #include "filelock.h"
+#include <unistd.h> /* gid_t */
 
 enum create_mode {
 	CREATE_EXCLUSIVE     =  001,