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arm64: add endianness option to LDFLAGS instead of LD

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With the recent syntax extension, Kconfig is now able to evaluate the
compiler / toolchain capability.

However, accumulating flags to 'LD' is not compatible with the way
it works; 'LD' must be passed to Kconfig to call $(ld-option,...)
from Kconfig files.  If you tweak 'LD' in arch Makefile depending on
CONFIG_CPU_BIG_ENDIAN, this would end up with circular dependency
between Makefile and Kconfig.

Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Masahiro Yamada 2018-07-03 10:22:00 +09:00 committed by Catalin Marinas
parent 38fc424867
commit 2893af07e5
1 changed files with 2 additions and 4 deletions
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6
arch/arm64/Makefile
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@ -60,15 +60,13 @@ ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
KBUILD_CPPFLAGS += -mbig-endian
CHECKFLAGS += -D__AARCH64EB__
AS += -EB
LD += -EB
LDFLAGS += -maarch64elfb
LDFLAGS += -EB -maarch64elfb
UTS_MACHINE := aarch64_be
else
KBUILD_CPPFLAGS += -mlittle-endian
CHECKFLAGS += -D__AARCH64EL__
AS += -EL
LD += -EL
LDFLAGS += -maarch64elf
LDFLAGS += -EL -maarch64elf
UTS_MACHINE := aarch64
endif