Re: [PATCH 4.14] kbuild: allow to use GCC toolchain not in Clang search path

[Greg Kroah-Hartman]

On Wed, Nov 28, 2018 at 10:35:12PM -0700, Nathan Chancellor wrote:
> From: Stefan Agner <stefan@xxxxxxxx>
> 
> commit ef8c4ed9db80261f397f0c0bf723684601ae3b52 upstream.
> 
> When using a GCC cross toolchain which is not in a compiled in
> Clang search path, Clang reverts to the system assembler and
> linker. This leads to assembler or linker errors, depending on
> which tool is first used for a given architecture.
> 
> It seems that Clang is not searching $PATH for a matching
> assembler or linker.
> 
> Make sure that Clang picks up the correct assembler or linker by
> passing the cross compilers bin directory as search path.
> 
> This allows to use Clang provided by distributions with GCC
> toolchains not in /usr/bin.
> 
> Link: https://github.com/ClangBuiltLinux/linux/issues/78
> Signed-off-by: Stefan Agner <stefan@xxxxxxxx>
> Reviewed-and-tested-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
> [nc: Adjust context]
> Signed-off-by: Nathan Chancellor <natechancellor@xxxxxxxxx>
> ---
>  Makefile | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)

We also need this for 4.9, right?

thanks,

greg k-h