Index: head/devel/libepoll-shim/Makefile
===================================================================
--- head/devel/libepoll-shim/Makefile
+++ head/devel/libepoll-shim/Makefile
@@ -2,7 +2,7 @@
 # $FreeBSD$
 
 PORTNAME=	libepoll-shim
-PORTVERSION=	0.0.20200602
+PORTVERSION=	0.0.20201229
 CATEGORIES=	devel
 
 MAINTAINER=	x11@FreeBSD.org
@@ -16,7 +16,8 @@
 USE_GITHUB=	yes
 GH_ACCOUNT=	jiixyj
 GH_PROJECT=	epoll-shim
-GH_TAGNAME=	3840e9c
+GH_TAGNAME=	1c27d2d
+PLIST_SUB=	SHIM_EVENTFD="${exists(/usr/include/sys/eventfd.h):?@comment :}"
 
 do-test:
 	# Exclude certain tests in resource restricted environments
Index: head/devel/libepoll-shim/distinfo
===================================================================
--- head/devel/libepoll-shim/distinfo
+++ head/devel/libepoll-shim/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1591116464
-SHA256 (jiixyj-epoll-shim-0.0.20200602-3840e9c_GH0.tar.gz) = 6b02ccc2d9a2f1c19c498a9300edd0b7362e11c4fea00ddc16b629baebe14c98
-SIZE (jiixyj-epoll-shim-0.0.20200602-3840e9c_GH0.tar.gz) = 59473
+TIMESTAMP = 1609265133
+SHA256 (jiixyj-epoll-shim-0.0.20201229-1c27d2d_GH0.tar.gz) = 38e33bab1066a733e611188e03e8501923c396efbb27e0ae936ad5ab9facc4a6
+SIZE (jiixyj-epoll-shim-0.0.20201229-1c27d2d_GH0.tar.gz) = 60751
Index: head/devel/libepoll-shim/pkg-plist
===================================================================
--- head/devel/libepoll-shim/pkg-plist
+++ head/devel/libepoll-shim/pkg-plist
@@ -1,5 +1,5 @@
 include/libepoll-shim/sys/epoll.h
-include/libepoll-shim/sys/eventfd.h
+%%SHIM_EVENTFD%%include/libepoll-shim/sys/eventfd.h
 include/libepoll-shim/sys/signalfd.h
 include/libepoll-shim/sys/timerfd.h
 lib/cmake/epoll-shim/epoll-shim-config.cmake