diff -rudpN sysutils/lnav.orig/Makefile sysutils/lnav/Makefile
--- sysutils/lnav.orig/Makefile	2016-11-16 04:01:15.741235000 +0000
+++ sysutils/lnav/Makefile	2016-11-16 04:31:15.276933000 +0000
@@ -22,6 +22,13 @@ GH_ACCOUNT=	tstack
 GNU_CONFIGURE=	yes
 USES=		autoreconf execinfo gmake ncurses python readline
 
+OPTIONS_DEFINE=	ICU
+
 PLIST_FILES=	bin/lnav man/man1/lnav.1.gz
 
+ICU_BUILD_DEPENDS=	${LOCALBASE}/bin/icu-config:devel/icu
+ICU_LIB_DEPENDS=	libicudata.so:devel/icu
+ICU_CPPFLAGS=	`${LOCALBASE}/bin/icu-config --cppflags`
+ICU_LDFLAGS=	`${LOCALBASE}/bin/icu-config --ldflags`
+
 .include <bsd.port.mk>