Index: head/irc/irc/Makefile
===================================================================
--- head/irc/irc/Makefile
+++ head/irc/irc/Makefile
@@ -18,18 +18,16 @@
 
 USE_RC_SUBR=	ircd
 GNU_CONFIGURE=	yes
+CONFIGURE_OUTSOURCE=	yes
 CONFIGURE_ARGS=	--sysconfdir=${PREFIX}/etc/ircd
-BUILD_WRKSRC=		${WRKSRC}/build
-INSTALL_WRKSRC=		${BUILD_WRKSRC}
-CONFIGURE_WRKSRC=	${BUILD_WRKSRC}
+CONFIGURE_WRKSRC=	${WRKSRC}/build
+CONFIGURE_SCRIPT=	support/configure
 
 OPTIONS_DEFINE=	IPV6
 OPTIONS_DEFAULT=IPV6
 IPV6_CONFIGURE_ENABLE=	ipv6
 
-pre-configure:
-	@${MKDIR} ${BUILD_WRKSRC}
-	${CP} -p ${WRKSRC}/support/configure ${BUILD_WRKSRC}
-	${CP} -p ${WRKSRC}/support/config.h.dist ${BUILD_WRKSRC}/config.h
+post-configure:
+	@${LN} -sf ${WRKSRC}/support/config.h.dist ${BUILD_WRKSRC}/config.h
 
 .include <bsd.port.mk>