diff -aur pcb-20110918/src/hid/common/hidgl.c pcb-20110918-patched/src/hid/common/hidgl.c
--- pcb-20110918/src/hid/common/hidgl.c	2011-09-13 15:24:56.000000000 -0600
+++ pcb-20110918-patched/src/hid/common/hidgl.c	2013-03-18 00:06:51.000000000 -0600
@@ -66,7 +66,7 @@
 #include <dmalloc.h>
 #endif
 
-
+typedef GLvoid (*_GLUfuncptr)(GLvoid);
 triangle_buffer buffer;
 float global_depth = 0;