On Tue, Nov 27, 2018 at 05:09:25PM -0800, ndesaulniers@xxxxxxxxxx wrote:
> From: Alistair Strachan <astrachan@xxxxxxxxxx>
>
> (commit 41f1c48420709470c51ee0e54b6fb28b956bb4e0 upstream)
>
> When building with CONFIG_EFI and CONFIG_EFI_STUB on ARM, the libstub
> Makefile would use -mno-single-pic-base without checking it was
> supported by the compiler. As the ARM (32-bit) clang backend does not
> support this flag, the build would fail.
>
> This changes the Makefile to check the compiler's support for
> -mno-single-pic-base before using it, similar to c1c386681bd7 ("ARM:
> 8767/1: add support for building ARM kernel with clang").
>
> Signed-off-by: Alistair Strachan <astrachan@xxxxxxxxxx>
> Reviewed-by: Stefan Agner <stefan@xxxxxxxx>
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
> Signed-off-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
> ---
> Please land in 4.19, 4.18. I'm preparing backports for 4.9 and 4.4 I
> will send today or tomorrow. This is for building the Linux kernel for
> arm32 with Clang.
Now queued up, thanks.
greg k-h
