From 9b7cba9643c1d8d32b6549eed67f1a6cbde1b791 Mon Sep 17 00:00:00 2001
From: Sylvain Rochet <gradator@gradator.net>
Date: Tue, 20 Oct 2020 03:57:36 +0200
Subject: [PATCH] PPP: don't define PPP_IP if PPP_IPV4_SUPPORT is disabled

Doing so helps a lot at finding places where we have leftovers of IPv4
support when the support is disabled.
---
 src/include/netif/ppp/ppp_impl.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/include/netif/ppp/ppp_impl.h b/src/include/netif/ppp/ppp_impl.h
index b149c132..de8d4696 100644
--- a/src/include/netif/ppp/ppp_impl.h
+++ b/src/include/netif/ppp/ppp_impl.h
@@ -90,7 +90,9 @@ extern "C" {
 /*
  * Protocol field values.
  */
+#if PPP_IPV4_SUPPORT
 #define PPP_IP		0x21	/* Internet Protocol */
+#endif /* PPP_IPV4_SUPPORT */
 #if 0 /* UNUSED */
 #define PPP_AT		0x29	/* AppleTalk Protocol */
 #define PPP_IPX		0x2b	/* IPX protocol */