Index: /usr/ports/security/libressl/Makefile
===================================================================
--- /usr/ports/security/libressl/Makefile	(revision 439265)
+++ /usr/ports/security/libressl/Makefile	(working copy)
@@ -13,6 +13,7 @@
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 CPE_VENDOR=	openbsd
+CFLAGS+="-O3"
 
 OPTIONS_DEFINE=	MAN3 NC
 OPTIONS_DEFAULT=	MAN3 NC
@@ -35,6 +36,12 @@
 INSTALL_TARGET=	install-strip
 TEST_TARGET=	check
 
+pre-install:
+.if ${ARCH} == "amd64"
+	@${REINPLACE_CMD} -e '/define OPENSSL_VERSION_NUMBER/s|OPENSSL_VERSION_NUMBER.*|OPENSSL_VERSION_NUMBER 0x1000107fL|1' \
+		${WRKSRC}/include/openssl/opensslv.h
+.endif
+
 post-install:
 	${RM} -r ${STAGEDIR}/${PREFIX}/etc/ssl/cert.pem