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Code Issues Releases Wiki Activity

ARM: 8875/1: Kconfig: default to AEABI w/ Clang 

Clang produces references to __aeabi_uidivmod and __aeabi_idivmod for
arm-linux-gnueabi and arm-linux-gnueabihf targets incorrectly when AEABI
is not selected (such as when OABI_COMPAT is selected).

While this means that OABI userspaces wont be able to upgraded to
kernels built with Clang, it means that boards that don't enable AEABI
like s3c2410_defconfig will stop failing to link in KernelCI when built
with Clang.

Link: https://github.com/ClangBuiltLinux/linux/issues/482
Link: https://groups.google.com/forum/#!msg/clang-built-linux/yydsAAux5hk/GxjqJSW-AQAJ

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
This commit is contained in:
Nick Desaulniers 2019-07-08 20:38:15 +01:00 committed by Russell King
parent 6f8f3570f2
commit a05b960845
1 changed files with 3 additions and 2 deletions
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5
arch/arm/Kconfig
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@ -1568,8 +1568,9 @@ config ARM_PATCH_IDIV
code to do integer division.
config AEABI
bool "Use the ARM EABI to compile the kernel" if !CPU_V7 && !CPU_V7M && !CPU_V6 && !CPU_V6K
default CPU_V7 || CPU_V7M || CPU_V6 || CPU_V6K
bool "Use the ARM EABI to compile the kernel" if !CPU_V7 && \
!CPU_V7M && !CPU_V6 && !CPU_V6K && !CC_IS_CLANG
default CPU_V7 || CPU_V7M || CPU_V6 || CPU_V6K || CC_IS_CLANG
help
This option allows for the kernel to be compiled using the latest
ARM ABI (aka EABI). This is only useful if you are using a user