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[PATCH] kbuild: fix-rR-is-now-default

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`make -d help | grep Makefile` shows patterns, where make tries to rebuild
included and top makefiles.

While `make -rR is now default' commit should fix this, actually, it was just
a little janitorial.

This fix is aimed to complete cancelling implicit rules.

Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Oleg Verych <olecom@flower.upol.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Oleg Verych 2006-12-10 02:18:40 -08:00 committed by Linus Torvalds
parent bf4735a46a
commit 15964864c0
1 changed files with 9 additions and 8 deletions
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17
Makefile
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@ -10,8 +10,11 @@ NAME=Avast! A bilge rat!
# Comments in this file are targeted only to the developer, do not # Comments in this file are targeted only to the developer, do not
# expect to learn how to build the kernel reading this file. # expect to learn how to build the kernel reading this file.
# Do not print "Entering directory ..." # Do not:
MAKEFLAGS += --no-print-directory # o use make's built-in rules and variables
# (this increases performance and avoid hard-to-debug behavour);
# o print "Entering directory ...";
MAKEFLAGS += -rR --no-print-directory
# We are using a recursive build, so we need to do a little thinking # We are using a recursive build, so we need to do a little thinking
# to get the ordering right. # to get the ordering right.
@ -271,12 +274,8 @@ export quiet Q KBUILD_VERBOSE
# Look for make include files relative to root of kernel src # Look for make include files relative to root of kernel src
MAKEFLAGS += --include-dir=$(srctree) MAKEFLAGS += --include-dir=$(srctree)
# We need some generic definitions # We need some generic definitions.
include $(srctree)/scripts/Kbuild.include 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
# Make variables (CC, etc...) # Make variables (CC, etc...)
@ -1484,6 +1483,8 @@ endif # skip-makefile
PHONY += FORCE PHONY += FORCE
FORCE: FORCE:
# Cancel implicit rules on top Makefile, `-rR' will apply to sub-makes.
Makefile: ;
# Declare the contents of the .PHONY variable as phony. We keep that # Declare the contents of the .PHONY variable as phony. We keep that
# information in a variable se we can use it in if_changed and friends. # information in a variable se we can use it in if_changed and friends.