$NetBSD$

--- Makefile.orig	2009-12-08 09:38:08.000000000 +0000
+++ Makefile
@@ -36,7 +36,7 @@ else											# *nix
 
 SYSTYPE    = __GCCUNIX__
 EXESUFFIX  =
-GLLIB      = -lGL
+GLLIB      = -L${X11BASE}/lib ${COMPILER_RPATH_FLAG}${X11BASE}/lib -lGL
 ICON       =
 SDLLIBTYPE = --libs
 MSG        = generic Unix/Linux
