[PATCH 3/4] build: fix that the bbenv file is always rebuilt

[Sam Ravnborg]

>From ac9ca6505d5b887c351117d9c033c8a76cc77125 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam at ravnborg.org>
Date: Tue, 26 Dec 2017 18:05:14 +0100
Subject: [PATCH 3/4] build: fix that the bbenv file is always rebuilt

Use if_changed in rule for bbenv file.
This avoids re-builds.
The target is already assigned to extra-y - so the
kbuild logic will work as expected.

Signed-off-by: Sam Ravnborg <sam at ravnborg.org>
---
 scripts/Makefile.lib | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index b084bacab..d202a7299 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -292,7 +292,7 @@ quiet_cmd_env = ENV     $@
 cmd_env=$(srctree)/scripts/genenv $(srctree) $(objtree) $@ $<
 
 %.bbenv$(DEFAULT_COMPRESSION_SUFFIX): % FORCE
-	$(call cmd,env)
+	$(call if_changed,env)
 
 # Bzip2
 # ---------------------------------------------------------------------------
-- 
2.12.0