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kbuild: use relative path more to include Makefile

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Prior to this commit, it was impossible to use relative path to
include Makefiles from the top level Makefile because the option
"--include-dir=$(srctree)" becomes effective when Make enters into
sub Makefiles.

To use relative path in any places, this commit moves the option
above the "sub-make" target.

This was imported from Linux (commit a436bb7b8063) and adjusted for
U-Boot.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
This commit is contained in:
Masahiro Yamada 2015-07-05 01:56:57 +09:00 committed by Tom Rini
parent ba84de9f13
commit 4d713be139
1 changed files with 9 additions and 11 deletions
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20
Makefile
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@ -10,9 +10,10 @@ NAME =
# Comments in this file are targeted only to the developer, do not
# expect to learn how to build the kernel reading this file.
# Do not use make's built-in rules and variables
# (this increases performance and avoids hard-to-debug behaviour);
MAKEFLAGS += -rR
# o Do not use make's built-in rules and variables
# (this increases performance and avoids hard-to-debug behaviour);
# o Look for make include files relative to root of kernel src
MAKEFLAGS += -rR --include-dir=$(CURDIR)
# Avoid funny character set dependencies
unexport LC_ALL
@ -319,12 +320,9 @@ endif
export KBUILD_MODULES KBUILD_BUILTIN
export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
# Look for make include files relative to root of kernel src
MAKEFLAGS += --include-dir=$(srctree)
# We need some generic definitions (do not try to remake the file).
$(srctree)/scripts/Kbuild.include: ;
include $(srctree)/scripts/Kbuild.include
scripts/Kbuild.include: ;
include scripts/Kbuild.include
# Make variables (CC, etc...)
@ -518,8 +516,8 @@ ifneq ($(wildcard include/config/auto.conf),)
autoconf_is_old := $(shell find . -path ./$(KCONFIG_CONFIG) -newer \
include/config/auto.conf)
ifeq ($(autoconf_is_old),)
include $(srctree)/config.mk
include $(srctree)/arch/$(ARCH)/Makefile
include config.mk
include arch/$(ARCH)/Makefile
endif
endif
endif
@ -595,7 +593,7 @@ endif
export CONFIG_SYS_TEXT_BASE
include $(srctree)/scripts/Makefile.extrawarn
include scripts/Makefile.extrawarn
# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
KBUILD_CPPFLAGS += $(KCPPFLAGS)