On 24/03/2020 12:33, Jan Beulich wrote: > With the exception of HAVE_AS_QUOTED_SYM, populate the results into a > generated header instead of (at least once per [sub]directory) into > CFLAGS. This results in proper rebuilds (via make dependencies) in case > the compiler used changes between builds. It additionally eases > inspection of which assembler features were actually found usable. > > Some trickery is needed to avoid header generation itself to try to > include the to-be/not-yet-generated header. > > Since the definitions in generated/config.h, previously having been > command line options, might even affect xen/config.h or its descendants, > move adding of the -include option for the latter after inclusion of the > per-arch Rules.mk. Use the occasion to also move the most general -I > option to the common Rules.mk. > > Signed-off-by: Jan Beulich <jbeul...@suse.com>
Given the work of Anthony's which is already committed in staging, I'd really prefer this patch to look something like https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?h=WIP.x86/asm&id=95ef9f80ed6359e89f988121521c421b7e9528de That avoids all fragile games with includes, and is the position we want to be in, longterm. All the requisite infrastructure looks to be already present. ~Andrew
