Index: Makefile
===================================================================
--- Makefile	(revision 512705)
+++ Makefile	(working copy)
@@ -13,4 +13,10 @@
 USE_PHP=	spl:build
 CFLAGS+=	-I${LOCALBASE}/include
 
+.include <bsd.port.options.mk>
+
+.if ${FLAVOR} == php74
+USES+=		compiler:c11
+.endif
+
 .include <bsd.port.mk>