Index: bsd.lib.mk
===================================================================
--- bsd.lib.mk	(revision 243899)
+++ bsd.lib.mk	(working copy)
@@ -45,6 +45,13 @@
 STRIP?=	-s
 .endif
 
+.if defined(PCADD)
+PCFLAGS!=	${PKGCONF} --cflags ${PCADD}
+PCLIBS!=	${PKGCONF} --libs ${PCADD}
+CFLAGS+=	${PCFLAGS}
+LDADD+=		${PCLIBS}
+.endif
+
 .include <bsd.libnames.mk>
 
 # prefer .s to a .c, add .po, remove stuff not used in the BSD libraries
Index: bsd.prog.mk
===================================================================
--- bsd.prog.mk	(revision 243899)
+++ bsd.prog.mk	(working copy)
@@ -36,6 +36,17 @@
 LDFLAGS+= -static
 .endif
 
+.if defined(PCADD)
+PCFLAGS!=	${PKGCONF} --cflags ${PCADD}
+.if defined(NO_SHARED) && (${NO_SHARED} != "no" && ${NO_SHARED} != "NO")
+PCLIBS!=	${PKGCONF} --libs --static ${PCADD}
+.else
+PCLIBS!= ${PKGCONF} --libs ${PCADD}
+.endif
+CFLAGS+=	${PCFLAGS}
+LDADD+=		${PCLIBS}
+.endif
+
 .if defined(PROG_CXX)
 PROG=	${PROG_CXX}
 .endif