Index: head/devel/libepoll-shim/Makefile
===================================================================
--- head/devel/libepoll-shim/Makefile
+++ head/devel/libepoll-shim/Makefile
@@ -10,8 +10,6 @@
 
 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
@@ -19,14 +17,18 @@
 
 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>