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arch: use cross_compiling to check whether it is a cross build or not

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'cross_compiling' is defined by the top Makefile and available for
arch Makefiles to check whether it is a cross build or not. A good
thing is the variable name 'cross_compiling' is self-documenting.

This is a simple replacement for m68k, mips, sh, for which $(ARCH)
and $(SRCARCH) always match.

No functional change is intended for xtensa, either.

This is rather a fix for parisc because arch/parisc/Makefile defines
UTS_MATCHINE depending on CONFIG_64BIT, therefore cc-cross-prefix
is not working in Kconfig time.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Helge Deller <deller@gmx.de>  # parisc
Acked-by: Max Filippov <jcmvbkbc@gmail.com> # xtensa
This commit is contained in:
Masahiro Yamada 2021-05-02 02:24:36 +09:00
parent 45799491a9
commit 23243c1ace
5 changed files with 5 additions and 9 deletions
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2
arch/m68k/Makefile
View File

@ -16,7 +16,7 @@
KBUILD_DEFCONFIG := multi_defconfig
ifneq ($(SUBARCH),$(ARCH))
ifdef cross_compiling
ifeq ($(CROSS_COMPILE),)
CROSS_COMPILE := $(call cc-cross-prefix, \
m68k-linux-gnu- m68k-linux- m68k-unknown-linux-gnu-)

2
arch/mips/Makefile
View File

@ -50,7 +50,7 @@ tool-archpref = $(64bit-tool-archpref)
UTS_MACHINE := mips64
endif
ifneq ($(SUBARCH),$(ARCH))
ifdef cross_compiling
ifeq ($(CROSS_COMPILE),)
CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
endif

2
arch/parisc/Makefile
View File

@ -41,7 +41,7 @@ endif
export LD_BFD
ifneq ($(SUBARCH),$(UTS_MACHINE))
ifdef cross_compiling
ifeq ($(CROSS_COMPILE),)
CC_SUFFIXES = linux linux-gnu unknown-linux-gnu
CROSS_COMPILE := $(call cc-cross-prefix, \

2
arch/sh/Makefile
View File

@ -9,7 +9,7 @@
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
ifneq ($(SUBARCH),$(ARCH))
ifdef cross_compiling
ifeq ($(CROSS_COMPILE),)
CROSS_COMPILE := $(call cc-cross-prefix, sh-linux- sh-linux-gnu- sh-unknown-linux-gnu-)
endif

6
arch/xtensa/Makefile
View File

@ -19,12 +19,8 @@ variant-y := $(patsubst "%",%,$(CONFIG_XTENSA_VARIANT_NAME))
VARIANT = $(variant-y)
export VARIANT
# Test for cross compiling
ifneq ($(VARIANT),)
COMPILE_ARCH = $(shell uname -m)
ifneq ($(COMPILE_ARCH), xtensa)
ifdef cross_compiling
ifndef CROSS_COMPILE
CROSS_COMPILE = xtensa_$(VARIANT)-
endif