Index: head/audio/so-synth-lv2/Makefile
===================================================================
--- head/audio/so-synth-lv2/Makefile	(revision 525117)
+++ head/audio/so-synth-lv2/Makefile	(revision 525118)
@@ -1,33 +1,33 @@
 # $FreeBSD$
 
 PORTNAME=	so-synth
 DISTVERSIONPREFIX=	upstream/
 DISTVERSION=	1.5
 CATEGORIES=	audio
 PKGNAMESUFFIX=	-lv2
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Unofficial LV2 ports of 50m30n3's synthesizers
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	lv2>0:audio/lv2
 
-USES=		compiler:c++11-lang gmake localbase
+USES=		compiler:c++11-lang gmake localbase pkgconfig
 USE_GITHUB=	yes
 GH_ACCOUNT=	jeremysalwen
 GH_PROJECT=	So-synth-LV2
 
 ALL_TARGET=	libsosynth.so
 
 MAKE_ARGS=	INSTALLDIR=${STAGEDIR}${PREFIX}/lib/lv2/
 BINARY_ALIAS=	gcc=${CC}
 
 PLIST_FILES=	lib/lv2/so-synth.lv2/libsosynth.so \
 		lib/lv2/so-synth.lv2/manifest.ttl \
 		lib/lv2/so-synth.lv2/so-404.ttl \
 		lib/lv2/so-synth.lv2/so-666.ttl \
 		lib/lv2/so-synth.lv2/so-kl5.ttl
 
 .include <bsd.port.mk>