Index: Makefile
===================================================================
--- Makefile	(revision 461680)
+++ Makefile	(working copy)
@@ -11,13 +11,23 @@
 MAINTAINER=	osa@FreeBSD.org
 COMMENT=	Just-In-Time Compiler for Lua
 
+OPTIONS_DEFINE=	PTHREAD
+OPTIONS_DESC=	with pthread
+
+ROKEN_powerpc64=	Not ported to powerpc64 upstream
+
 WRKSRC=		${WRKDIR}/LuaJIT-${DISTVERSION}
 USES=		gmake
 USE_LDCONFIG=	yes
 MAKE_ARGS=	CC=${CC}
 
+.include <bsd.port.pre.mk>
+
+.if ${PORT_OPTIONS:MPTHREAD}
+	LDFLAGS+=	-lm -pthread
+.endif
+
 PLIST_SUB+=	VERSION=${DISTVERSION}
-BROKEN_powerpc64=	Not ported to powerpc64 upstream
 
 .include <bsd.port.options.mk>
 
@@ -28,6 +38,6 @@
 post-install:
 	${LN} -sf ${PORTNAME}-${DISTVERSION} \
 		${STAGEDIR}${PREFIX}/bin/${PORTNAME}
-	@${INSTALL_MAN} ${WRKSRC}/etc/luajit.1 ${STAGEDIR}${MAN1PREFIX}/man/man1
+	${INSTALL_MAN} ${WRKSRC}/etc/luajit.1 ${STAGEDIR}${MAN1PREFIX}/man/man1
 
 .include <bsd.port.mk>