Index: cad/brlcad/Makefile
===================================================================
--- cad/brlcad/Makefile	(revision 310123)
+++ cad/brlcad/Makefile	(working copy)
@@ -181,13 +181,15 @@
 	window.nged window_frame.nged wire.nged wmater.nged x.nged		\
 	xpush.nged zoom.nged
 
-OPTIONS=	OPTIMIZATION "Build with optimizations" on
+OPTIONS_DEFINE=		OPTIMIZATION
+OPTIMIZATION_DESC=	Build with optimizations
+OPTIONS_DEFAULT=	OPTIMIZATION
 
 .include <bsd.port.pre.mk>
 
 EXTRA_LIBS=	${PTHREAD_LIBS}
 
-.ifdef WITH_OPTIMIZATION
+.if ${PORT_OPTIONS:MOPTIMIZATION}
 CMAKE_BUILD_TYPE=Release
 .endif