Re: [PATCH RFC] selftests: default to host arch for LLVM builds

On Sun, Mar 03, 2024 at 01:44:36PM +0100, Valentin Obst wrote:

When using gcc without cross compiling, i.e., `CROSS_COMPILE` unset or empty, the selftests build defaults to the host architecture, i.e., it uses plain gcc. However, when compiling with clang an unset `ARCH` variable in combination with an unset `CROSS_COMPILE` variable, i.e., compiling for the host architecture, leads to compilation failures since `lib.mk` can not determine the clang target triple. In this case, the following error message is displayed for each subsystem that does not set `ARCH` in its own Makefile before including `lib.mk` (lines wrapped at 75 chrs):

Reviewed-by: Mark Brown broonie@kernel.org