added GLW_SOURCES for IRIX
diff --git a/configs/irix6-n32-static b/configs/irix6-n32-static
index 5fc9423..91f73f5 100644
--- a/configs/irix6-n32-static
+++ b/configs/irix6-n32-static
@@ -11,6 +11,8 @@
 CXXFLAGS = -n32 -mips2 -O2 -ansi -woff 3262,3666
 MKLIB_OPTIONS = -archopt n32 -static
 
+GLW_SOURCES = GLwDrawA.c GLwMDrawA.c
+
 LIB_DIR = $(TOP)/lib32
 
 APP_LIB_DEPS = -L$(LIB_DIR) -n32 -glut -lGLU -lGL -lX11 -lXext -lXmu -lXi -lm