Index: Makefile
===================================================================
--- Makefile	(revision 487742)
+++ Makefile	(working copy)
@@ -11,8 +11,6 @@
 
 LICENSE=	LGPL21
 
-BROKEN_powerpc64=	fails to compile: cc1: unrecognized command line option "-Wno-unused-but-set-variable"
-
 OPTIONS_SINGLE=	BACKEND
 OPTIONS_SINGLE_BACKEND=PCSC OPENCT CTAPI
 OPTIONS_DEFINE=	SM NOTIFY DOCS MANPAGES
@@ -67,4 +65,10 @@
 CONFIGURE_ARGS+=--without-xsl-stylesheetsdir
 .endif
 
+post-patch:
+.if exists(/usr/lib/libstdc++.so)
+	${REINPLACE_CMD} -e '/-Wno-unused-but-set-variable/d' \
+		${WRKSRC}/src/tools/Makefile.am
+.endif
+
 .include <bsd.port.mk>