[PATCH v2] Make iwmmxt.S support Clang's integrated assembler

[Nick Desaulniers]

On Tue, Nov 10, 2020 at 12:10 PM Jian Cai <jiancai at google.com> wrote:
>
> I tried to verify with ixp4xx_defconfig, and I noticed it also used CONFIG_CPU_BIG_ENDIAN=y to enable big endianness as follows,
>
> linux$ grep ENDIAN arch/arm/configs/ixp4xx_defconfig
> CONFIG_CPU_BIG_ENDIAN=y
>
> Also it appeared arch/arm/kernel/iwmmxt.o was not built with ixp4xx_defconfig. The commands I used
>
> linux$ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- make CC=clang ixp4xx_defconfig
> linux$ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- make -j32 CC=clang
> linux$ ls arch/arm/kernel/iwmmxt.o
> ls: cannot access 'arch/arm/kernel/iwmmxt.o': No such file or directory
>
> Did I miss any steps?

Yes, you need to manually enable CONFIG_IWMMXT in menuconfig or via
`scripts/configs -e`.

-- 
Thanks,
~Nick Desaulniers