Re: [OE-core] linux-yocto 5.15.48 reproducibility failure

[Richard Purdie <richard.purdie@linuxfoundation.org>]

On Wed, 2022-08-03 at 11:50 -1000, Steve Sakoman wrote:
> On Wed, Jul 6, 2022 at 4:05 AM Bruce Ashfield <bruce.ashfield@gmail.com> wrote:
> > 
> > On Wed, Jul 6, 2022 at 9:31 AM Richard Purdie
> > <richard.purdie@linuxfoundation.org> wrote:
> > > 
> > > On Wed, 2022-07-06 at 15:29 +0200, Alexandre Belloni wrote:
> > > > Hello Bruce,
> > > > 
> > > > I got the following reproducible build failures:
> > > > 
> > > > https://autobuilder.yoctoproject.org/typhoon/#/builders/117/builds/1116/steps/12/logs/stdio
> > > > 
> > > > To me, it looks like the in-kernel config changed, did the compression
> > > > alg change?
> > > > 
> > > > Are you able to look at that soon or should I file a bug?
> > > 
> > > FWIW,
> > > http://autobuilder.yocto.io/pub/repro-fail/oe-reproducible-20220705-g8ltxczy/packages/diff-html/
> > > 
> > > and CONFIG_CC_HAS_ASM_GOTO_TIED_OUTPUT=y changed value...
> > 
> > A quick look at the -stable queue to init/Kconfig does indeed show
> > that option arriving .. from my scan of the change, it looks like
> > there are different compilers on the hosts, and hence that check is
> > detecting a buggy gcc (or not) and changing the value.
> > 
> > So one of the build hosts is failing the test, and another isn't.
> > 
> > I'm not sure how to fix that, unless we revert the change. I'll ponder it more.
> 
> Was this issue ever resolved?  I'm seeing it on kirkstone now too :-(

No, it wasn't. I took a quick look and my best guess is that we now
have the kernel wanting to do $CC tests in kConfig and we don't set CC
properly for all our make config calls. I chucked this in master-next
as a quick guess at a possible fix:

https://git.yoctoproject.org/poky/commit/?h=master-next&id=944cc04d1ed316a5652f3d058b966d4cfb9a6b73

but others might know better where we might be missing the CC settings.
I suspect we need to clean up our parameters a bit looking at the
different call site differences.

Cheers,

Richard