From c17594c1d0a69152cc10edbdf1f2d51b689cb16c Mon Sep 17 00:00:00 2001
From: Sylvain Rochet <gradator@gradator.net>
Date: Sat, 21 Mar 2015 20:12:14 +0100
Subject: [PATCH] PPP, CORE, don't build get_loop_output() if demand support
 (not supported) is not enabled

---
 src/include/netif/ppp/ppp_impl.h | 2 ++
 src/netif/ppp/ppp.c              | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/include/netif/ppp/ppp_impl.h b/src/include/netif/ppp/ppp_impl.h
index f978d323..6ef65035 100644
--- a/src/include/netif/ppp/ppp_impl.h
+++ b/src/include/netif/ppp/ppp_impl.h
@@ -482,7 +482,9 @@ int ccp_fatal_error(ppp_pcb *pcb);
 int get_idle_time(ppp_pcb *pcb, struct ppp_idle *ip);
 #endif /* PPP_IDLETIMELIMIT */
 
+#if DEMAND_SUPPORT
 int get_loop_output(void);
+#endif /* DEMAND_SUPPORT */
 
 u32_t get_mask(u32_t addr);
 
diff --git a/src/netif/ppp/ppp.c b/src/netif/ppp/ppp.c
index 2264091c..76bf75cd 100644
--- a/src/netif/ppp/ppp.c
+++ b/src/netif/ppp/ppp.c
@@ -1142,6 +1142,7 @@ int get_idle_time(ppp_pcb *pcb, struct ppp_idle *ip) {
 }
 #endif /* PPP_IDLETIMELIMIT */
 
+#if DEMAND_SUPPORT
 /********************************************************************
  *
  * get_loop_output - get outgoing packets from the ppp device,
@@ -1149,9 +1150,9 @@ int get_idle_time(ppp_pcb *pcb, struct ppp_idle *ip) {
  * Return value is 1 if we need to bring up the link, 0 otherwise.
  */
 int get_loop_output(void) {
-    /* FIXME: necessary for "demand", do we really need to support on-demand ? */
     return 0;
 }
+#endif /* DEMAND_SUPPORT */
 
 /********************************************************************
  *