Index: head/devel/libepoll-shim/Makefile
===================================================================
--- head/devel/libepoll-shim/Makefile	(revision 445414)
+++ head/devel/libepoll-shim/Makefile	(revision 445415)
@@ -1,32 +1,34 @@
 # Created by: Johannes Lundberg <johalun0@gmail.com>
 # $FreeBSD$
 
 PORTNAME=	libepoll-shim
 PORTVERSION=	0.0.20161220
 CATEGORIES=	devel
 
 MAINTAINER=	x11@FreeBSD.org
 COMMENT=	epoll shim implemented using kevent
 
 LICENSE=	MIT
 
-BROKEN_powerpc64=	fails to compile: cc1: error: unrecognized command line option -Wno-missing-variable-declarations
-
 USE_GITHUB=	yes
 GH_ACCOUNT=	FreeBSDDesktop
 GH_PROJECT=	epoll-shim
 GH_TAGNAME=	c04b26b
 
 USE_LDCONFIG=	yes
 
-USES=		uidfix
-MAKE_ARGS=	LIBDIR=${PREFIX}/lib INCLUDEDIR=${PREFIX}/include
+USES=		compiler uidfix
+MAKE_ARGS=	LIBDIR=${PREFIX}/lib INCSDIR=${PREFIX}/include/libepoll-shim/sys
 
+.include <bsd.port.pre.mk>
+
 post-patch:
-	# -Weverything is not recognized by GCC
-	@${REINPLACE_CMD} -e 's|Weverything|Wall|' ${WRKSRC}/Makefile
+.if "${CHOSEN_COMPILER_TYPE}" == "gcc"
+	@${REINPLACE_CMD} -e 's|Wno-missing-variable-declarations|Wno-missing-declarations|' \
+		-e 's|-Wno-thread-safety-analysis||' -e 's|Weverything|Wall|' ${WRKSRC}/Makefile
+.endif
 
 pre-install:
 	@${MKDIR} ${STAGEDIR}/${PREFIX}/include/libepoll-shim/sys
 
-.include <bsd.port.mk>
+.include <bsd.port.post.mk>