Index: head/www/mod_md-devel/Makefile
===================================================================
--- head/www/mod_md-devel/Makefile	(revision 447976)
+++ head/www/mod_md-devel/Makefile	(revision 447977)
@@ -1,45 +1,50 @@
 # Created by: Bernard Spil <brnrd@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	mod_md-devel
 PORTVERSION=	0.0.20170809
 CATEGORIES=	www
 
 MAINTAINER=	brnrd@FreeBSD.org
 COMMENT=	Early experience LetsEncrypt module for Apache httpd
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 LIB_DEPENDS=	libcurl.so:ftp/curl \
 		libjansson.so:devel/jansson
 
 USES=		autoreconf libtool ssl
 USE_GITHUB=	yes
 USE_APACHE=	24+
 
 GH_ACCOUNT=	icing
 GH_PROJECT=	mod_md
 GH_TAGNAME=	1e07174
 
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--program-prefix=ext-
 CONFIGURE_ENV=	CONFIG_SHELL=/bin/sh
 
 MODULENAME=	${GH_PROJECT}
 
 CFLAGS+=	-I${LOCALBASE}/include
 CPPFLAGS+=	-I${LOCALBASE}/include
 
-#DOCSDIR=	share/docs/mod_md
 PORTDOCS=	README README.md
 PLIST_FILES=	${APACHEMODDIR}/mod_md.so.0.0.0 \
 		${APACHEMODDIR}/mod_md.so
 
+.include <bsd.port.pre.mk>
+
+.if ${OPSYS} == FreeBSD && ${OSVERSION} < 1100085 && ${SSL_DEFAULT} == base
+IGNORE=		This port requires OpenSSL 1.0.2 or later, set DEFAULT_VERSIONS+= ssl=openssl
+.endif
+
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/${APACHEMODDIR}/${MODULENAME}.so
 	${MV} ${STAGEDIR}${PREFIX}/share/doc/mod_cert ${STAGEDIR}${PREFIX}/share/doc/mod_md-devel
 	${RM} ${STAGEDIR}${PREFIX}/share/doc/mod_md-devel/LICENSE
 	${RM} ${STAGEDIR}${PREFIX}/bin/ext-a2md
 
-.include <bsd.port.mk>
+.include <bsd.port.post.mk>