--- Makefile	2016-11-24 18:07:41.691256000 +0200
+++ Makefile.new	2016-11-24 18:11:32.769734000 +0200
@@ -237,7 +237,10 @@
 .endif
 
 post-configure:
-	@cd ${WRKSRC} && ${MAKE_CMD} menuselect.makeopts USER_MAKEOPTS="${USER_MAKEOPTS_FILE}"
+.if ${USER_MAKEOPTS_FILE}
+	${CP} ${USER_MAKEOPTS_FILE} ${WRKSRC}/menuselect.makeopts
+.endif
+	@cd ${WRKSRC} && ${MAKE_CMD} menuselect.makeopts
 	@cd ${WRKSRC} && ./menuselect/menuselect --disable res_timing_kqueue menuselect.makeopts
 	@cd ${WRKSRC} && ./menuselect/menuselect --enable chan_mgcp menuselect.makeopts
 	@cd ${WRKSRC} && ./menuselect/menuselect --enable res_pktccops menuselect.makeopts