Hi Bruce,

Bad timing on my part - I posted this before spotting Harish's series,
sorry for the noise.

It's not quite the same though: the point of this series is patches 1
and 3, keeping the kernel, out-of-tree modules and make-mod-scripts on
one toolchain. With only the kernel recipe switched to clang, modules
and make-mod-scripts still run make against the shared kernel build
tree with the gcc defaults; kbuild notices the CC_VERSION_TEXT mismatch
and re-runs syncconfig, silently dropping compiler-dependent options
from the shared .config - CONFIG_CFI_CLANG for example disappears as
soon as any out-of-tree module is built, with no error anywhere.
Reproduced on qemux86-64 with cryptodev-module.

I'll drop the two patches that overlap with Harish's series and send a
v2 with the module/make-mod-scripts side rebased on top of his.

Mark