diff -udprN /usr/ports/security/clamav/Makefile ./Makefile
--- /usr/ports/security/clamav/Makefile	2019-11-12 20:07:20.597635000 +0000
+++ ./Makefile	2019-11-15 03:05:31.949294000 +0000
@@ -73,6 +73,7 @@ EXPERIMENTAL_DESC=	Build experimental co
 LHA_DESC=		Enable lha archives support
 MILTER_DESC=		Compile the milter interface
 MSPACK_DESC=		Get mspack support from ports (otherwise use bundled)
+MSPACK_IGNORE_OFF=	Build failure
 STDERR_DESC=		Print logs to stderr instead of stdout
 TESTS_DESC=		Run compile-time tests (req. python)
 UNZOO_DESC=		Enable zoo archives support
@@ -83,7 +84,7 @@ DMG_XAR_CONFIGURE_ENABLE=	xml
 DMG_XAR_USE=		GNOME=libxml2
 EXPERIMENTAL_CONFIGURE_ENABLE=	experimental
 ICONV_CONFIGURE_WITH=	iconv
-ICONV_USES=		iconv
+ICONV_USES=		iconv:lib
 IPV6_CONFIGURE_ENABLE=	ipv6
 JSON_CONFIGURE_WITH=	libjson
 JSON_LIB_DEPENDS=	libjson-c.so:devel/json-c