From 30e10c6ee6ea964a67af86cc87efd56ef29d2649 Mon Sep 17 00:00:00 2001
From: Anas Nashif <anas.nashif@intel.com>
Date: Tue, 6 Oct 2015 09:05:51 -0400
Subject: [PATCH] mdef: do not try to use MDEF file if it was not defined

In some cases an MDEF file is not needed, especially when using
private objects. Check if the MDEF file actually exists and define
before trying to use it.

Change-Id: I69c78e6d30bc0df0397e5ae354f91b774fcb737c
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
---
 Kbuild | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Kbuild b/Kbuild
index b9029786274..5b0daca2978 100644
--- a/Kbuild
+++ b/Kbuild
@@ -9,8 +9,10 @@ endif
 ifneq ("$(wildcard $(MDEF_FILE))","")
 MDEF_FILE_PATH=$(MDEF_FILE)
 else
+ifneq ($(MDEF_FILE),)
 MDEF_FILE_PATH=$(PROJECT_BASE)/$(MDEF_FILE)
 endif
+endif
 
 define filechk_prj.mdef
 	(echo "% WARNING. THIS FILE IS AUTO-GENERATED. DO NOT MODIFY!"; \
@@ -36,7 +38,9 @@ define filechk_prj.mdef
 		i=$$(($$i+1));\
 		done; \
 	fi; \
-	cat $(MDEF_FILE_PATH);)
+	if test -e "$(MDEF_FILE_PATH)"; then \
+		cat $(MDEF_FILE_PATH); \
+	fi;)
 endef
 
 misc/generated/sysgen/prj.mdef:	$(MDEF_FILE_PATH) \