Index: ports/audio/lash/Makefile
@@ -37,4 +37,7 @@
 LIB_DEPENDS+=	readline.6:${PORTSDIR}/devel/readline
 .endif
 
+post-extract:
+	@${REINPLACE_CMD} -e 's|m4 docs|m4|' ${WRKSRC}/Makefile.in
+
 .include <bsd.port.post.mk>