From 1f9a3b6ffeeb06ce3881cbb6016adb4f15ef9d81 Mon Sep 17 00:00:00 2001
From: archie <archie@FreeBSD.org>
Date: Mon, 10 Apr 2000 22:22:18 +0000
Subject: Turn off MPPE encryption if NOCRYPT is defined. If neither
 compression nor encryption is enabled, don't build or install anything.

---
 sys/modules/netgraph/mppc/Makefile | 29 ++++++++++++++++++++++-------
 1 file changed, 22 insertions(+), 7 deletions(-)

diff --git a/sys/modules/netgraph/mppc/Makefile b/sys/modules/netgraph/mppc/Makefile
index 730644b..4c7b031 100644
--- a/sys/modules/netgraph/mppc/Makefile
+++ b/sys/modules/netgraph/mppc/Makefile
@@ -1,14 +1,29 @@
 # $Whistle: Makefile,v 1.1 1999/12/08 20:20:39 archie Exp $
 # $FreeBSD$
 
+# Determine which of compression and encryption to support
+#
+NETGRAPH_MPPC_COMPRESSION?=	0
+.if !defined(NETGRAPH_MPPC_ENCRYPTION)
+.if defined(NOCRYPT)
+NETGRAPH_MPPC_ENCRYPTION=	0
+.else
+NETGRAPH_MPPC_ENCRYPTION=	1
+.endif
+.endif
+
+# No point in building module if neither is enabled
+#
+.if ${NETGRAPH_MPPC_COMPRESSION} == 0 && ${NETGRAPH_MPPC_ENCRYPTION} == 0
+all depend distribute install load unload:
+	@echo '>>>' Neither compression nor encryption enabled, skipping KLD netgraph/mppc.
+.else
+
 KMOD=		ng_mppc
 SRCS= 		ng_mppc.c opt_netgraph.h
 MAN8=		ng_mppc.8
 KMODDEPS=	netgraph
 
-NETGRAPH_MPPC_COMPRESSION?=	0
-NETGRAPH_MPPC_ENCRYPTION?=	1
-
 CFLAGS+=	${PROTOS}
 
 CLEANFILES+=	opt_netgraph.h
@@ -16,10 +31,13 @@ CLEANFILES+=	opt_netgraph.h
 .if ${NETGRAPH_MPPC_COMPRESSION} > 0
 # XXX These files don't exist yet, but hopefully someday they will...
 SRCS+=		mppcc.c mppcd.c
+.PATH:		${.CURDIR}/../../../net
 .endif
 
 .if ${NETGRAPH_MPPC_ENCRYPTION} > 0
 SRCS+=		rc4.c sha1.c
+.PATH:		${.CURDIR}/../../../crypto
+.PATH:		${.CURDIR}/../../../crypto/rc4
 .endif
 
 opt_netgraph.h:
@@ -31,8 +49,5 @@ opt_netgraph.h:
 	echo "#define NETGRAPH_MPPC_ENCRYPTION 1" >> ${.TARGET}
 .endif
 
-.PATH:		${.CURDIR}/../../../net
-.PATH:		${.CURDIR}/../../../crypto
-.PATH:		${.CURDIR}/../../../crypto/rc4
-
 .include <bsd.kmod.mk>
+.endif
-- 
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