From 566f81ca598f80de03e80a9a743e94b65b4e017e Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@mars.ravnborg.org>
Date: Sat, 10 Jun 2006 09:15:27 +0200
Subject: [PATCH] kbuild: ignore make's built-in rules & variables

kbuild does explicitly specify what to do in all cases, and each
time make's built-in rules & variables has been used it has been a bug.
So to speed up things and to avoid the hard-to-debug error situations
ignore the built-in definitions.
If any part of the kernel uses the built-in definitions the build will
just stop there and it should be trivial to fix.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
---
 Makefile | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index 818d1950e22d8b..1b2fd97f503a5e 100644
--- a/Makefile
+++ b/Makefile
@@ -267,10 +267,9 @@ MAKEFLAGS += --include-dir=$(srctree)
 # We need some generic definitions
 include  $(srctree)/scripts/Kbuild.include
 
-# For maximum performance (+ possibly random breakage, uncomment
-# the following)
-
-#MAKEFLAGS += -rR
+# Do not use make's built-in rules and variables
+# This increases performance and avoid hard-to-debug behaviour
+MAKEFLAGS += -rR
 
 # Make variables (CC, etc...)
 
-- 
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