--- Makefile.orig	2014-08-05 15:17:00.000000000 +0200
+++ Makefile	2014-08-05 15:47:59.000000000 +0200
@@ -58,6 +58,10 @@
 
 NOT_FOR_ARCHS=	ia64
 
+# no rule to get .lo from .S in subdirectory
+pre-build:
+	${LN} -sf ${WRKSRC}/src/sparc_mach_dep.S ${WRKSRC}
+
 .if ${PORT_OPTIONS:MDEBUG}
 CONFIGURE_ARGS+=--enable-gc-debug
 PKGNAMESUFFIX:=	${PKGNAMESUFFIX}+fulldebug