From: Andrew Morton <akpm@osdl.org>

This breaks the ia64 build on old toolchains: things like __udivdi3 are
missing in the final link.

Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 Makefile |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff -puN Makefile~revert-ignore-makes-built-in-rules-variables Makefile
--- a/Makefile~revert-ignore-makes-built-in-rules-variables
+++ a/Makefile
@@ -276,9 +276,9 @@ MAKEFLAGS += --include-dir=$(srctree)
 # We need some generic definitions
 include  $(srctree)/scripts/Kbuild.include
 
-# Do not use make's built-in rules and variables
-# This increases performance and avoid hard-to-debug behavour
-MAKEFLAGS += -rR
+# For maximum performance (+ possibly random breakage, uncomment
+# the following)
+#MAKEFLAGS += -rR
 
 # Make variables (CC, etc...)
 
_