Index: devel/glib20/Makefile
===================================================================
--- devel/glib20/Makefile	(revision 393653)
+++ devel/glib20/Makefile	(working copy)
@@ -32,7 +32,8 @@
 		--enable-static=yes \
 		--with-pcre=system \
 		--disable-fam
-CONFIGURE_ENV=	ac_cv_header_sys_inotify_h=
+CONFIGURE_ENV=	ac_cv_header_sys_inotify_h= \
+		ac_cv_header_sys_event_h=
 CPPFLAGS+=	-I${LOCALBASE}/include
 LDFLAGS+=	-L${LOCALBASE}/lib
 INSTALL_TARGET=	install-strip