diff -Nur mupdf.orig/Makefile mupdf/Makefile
--- mupdf.orig/Makefile	2010-07-16 08:29:41.000000000 +0200
+++ mupdf/Makefile	2010-07-16 08:49:12.000000000 +0200
@@ -43,7 +43,7 @@
 post-patch:
 	@${REINPLACE_CMD} 's/LAGS :=/LAGS +=/g' ${WRKSRC}/Makerules
 	@${REINPLACE_CMD} 's/Linux/FreeBSD/g' ${WRKSRC}/Makerules
-	@${REINPLACE_CMD} 's/CC = .*/CC = ${CC}/g' ${WRKSRC}/Makerules
+	@${REINPLACE_CMD} 's|CC = .*|CC = ${CC}|g' ${WRKSRC}/Makerules
 	@${REINPLACE_CMD} 's#\(PDF.*_EXE=.*DIR./\)#\1mu_#g' ${WRKSRC}/Makefile
 
 .include <bsd.port.mk>