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authorMasahiro Yamada <yamada.masahiro@socionext.com>2015-03-27 20:43:36 +0900
committerMichal Marek <mmarek@suse.cz>2015-04-02 16:42:08 +0200
commita436bb7b806383ae0593cab53d17fc9676270cd3 (patch)
tree4d51b1a8b5474fd0d3000f5026032efc71a961b0
parent7aacad53aeb57b7ff52399f56eb6d7d4010e72e9 (diff)
kbuild: use relative path more to include Makefile
Prior to this commit, it was impossible to use relative path to include Makefiles from the top level Makefile because the option "--include-dir=$(srctree)" becomes effective when Make enters into sub Makefiles. To use relative path in any places, this commit moves the option above the "sub-make" target. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
-rw-r--r--Makefile22
-rw-r--r--arch/mips/Makefile2
-rw-r--r--arch/um/Makefile6
-rw-r--r--arch/x86/Makefile2
-rw-r--r--arch/x86/Makefile.um2
5 files changed, 16 insertions, 18 deletions
diff --git a/Makefile b/Makefile
index d3726e5f93ef..929d805b4f62 100644
--- a/Makefile
+++ b/Makefile
@@ -10,9 +10,10 @@ NAME = Hurr durr I'ma sheep
# Comments in this file are targeted only to the developer, do not
# expect to learn how to build the kernel reading this file.
-# Do not use make's built-in rules and variables
-# (this increases performance and avoids hard-to-debug behaviour);
-MAKEFLAGS += -rR
+# o Do not use make's built-in rules and variables
+# (this increases performance and avoids hard-to-debug behaviour);
+# o Look for make include files relative to root of kernel src
+MAKEFLAGS += -rR --include-dir=$(CURDIR)
# Avoid funny character set dependencies
unexport LC_ALL
@@ -344,12 +345,9 @@ endif
export COMPILER
endif
-# 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...)
AS = $(CROSS_COMPILE)as
@@ -533,7 +531,7 @@ ifeq ($(config-targets),1)
# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
# KBUILD_DEFCONFIG may point out an alternative default configuration
# used for 'make defconfig'
-include $(srctree)/arch/$(SRCARCH)/Makefile
+include arch/$(SRCARCH)/Makefile
export KBUILD_DEFCONFIG KBUILD_KCONFIG
config: scripts_basic outputmakefile FORCE
@@ -609,7 +607,7 @@ endif # $(dot-config)
# Defaults to vmlinux, but the arch makefile usually adds further targets
all: vmlinux
-include $(srctree)/arch/$(SRCARCH)/Makefile
+include arch/$(SRCARCH)/Makefile
KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
@@ -781,8 +779,8 @@ ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
endif
-include $(srctree)/scripts/Makefile.kasan
-include $(srctree)/scripts/Makefile.extrawarn
+include scripts/Makefile.kasan
+include scripts/Makefile.extrawarn
# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
KBUILD_CPPFLAGS += $(KCPPFLAGS)
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 8f57fc72d62c..d152dfbc360d 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -225,7 +225,7 @@ endif
#
# Board-dependent options and extra files
#
-include $(srctree)/arch/mips/Kbuild.platforms
+include arch/mips/Kbuild.platforms
ifdef CONFIG_PHYSICAL_START
load-y = $(CONFIG_PHYSICAL_START)
diff --git a/arch/um/Makefile b/arch/um/Makefile
index e4b1a9639c4d..17d4460b1af3 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -43,8 +43,8 @@ endif
HOST_DIR := arch/$(HEADER_ARCH)
-include $(srctree)/$(ARCH_DIR)/Makefile-skas
-include $(srctree)/$(HOST_DIR)/Makefile.um
+include $(ARCH_DIR)/Makefile-skas
+include $(HOST_DIR)/Makefile.um
core-y += $(HOST_DIR)/um/
@@ -73,7 +73,7 @@ USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\
$(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64 -idirafter include
#This will adjust *FLAGS accordingly to the platform.
-include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
+include $(ARCH_DIR)/Makefile-os-$(OS)
KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/include \
-I$(srctree)/$(HOST_DIR)/include/uapi \
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 5ba2d9ce82dc..2fda005bb334 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -63,7 +63,7 @@ ifeq ($(CONFIG_X86_32),y)
$(call cc-option,-fno-unit-at-a-time))
# CPU-specific tuning. Anything which can be shared with UML should go here.
- include $(srctree)/arch/x86/Makefile_32.cpu
+ include arch/x86/Makefile_32.cpu
KBUILD_CFLAGS += $(cflags-y)
# temporary until string.h is fixed
diff --git a/arch/x86/Makefile.um b/arch/x86/Makefile.um
index 95eba554baf9..5b7e898ffd9a 100644
--- a/arch/x86/Makefile.um
+++ b/arch/x86/Makefile.um
@@ -18,7 +18,7 @@ LDS_EXTRA := -Ui386
export LDS_EXTRA
# First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y.
-include $(srctree)/arch/x86/Makefile_32.cpu
+include arch/x86/Makefile_32.cpu
# prevent gcc from keeping the stack 16 byte aligned. Taken from i386.
cflags-y += $(call cc-option,-mpreferred-stack-boundary=2)