Re: [OE-core] [PATCH v2 2/2] cargo-cross-canadian: Use SDK's flags during target linking

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

On Mon, 2022-07-18 at 18:41 -0300, Otavio Salvador wrote:
> Em seg., 18 de jul. de 2022 às 18:18, Richard Purdie
> <richard.purdie@linuxfoundation.org> escreveu:
> > > It does, indeed, but it doesn't seem related to this PR. 
> > > 
> > > Do you know if this has worked?
> > > 
> > > I am asking as I did all development and testing using SDKMACHINE
> > > ?=
> > > 'x86_64' and even MACHINE ?= 'qemuarm64' worked just fine.
> > > However,
> > > looking at some of the logs above, it seems it is using an
> > > SDKMACHINE
> > > as i686, so this appears as a different issue for me.
> > > 
> > 
> > rust-cross-canadian hasn't officially worked properly or been
> > supported. In assessing whether a patch is better or worse, it is
> > useful to know which cases regress and which improve. I had hoped
> > this
> > list of failures would be smaller. I will admit I don't know
> > whether
> > this is better or worse than before so I guess that is the next
> > thing I
> > need to determine.
> > 
> 
> 
> I told you. I tried SDKMACHINE as x86_64 on a x86_64 host and this
> worked.
> 
> > What we don't know right now is which combinations work and which
> > don't
> > so we can't even tell people what is expected to work and what
> > isn't/doesn't :(
> > 
> 
> 
> See above.
>  
> > I mentioned this report in case someone can work out the pattern,
> > or
> > even better, understand what a fix looks like...
> > 
> 
> 
> I am not familiar enough to Rust boostrap to help here but we spent a
> lot of time to get the SDK working and I think this is a step on the
> right direction, at least.

Thanks, I do appreciate the patches. I think we've talked cross
purposes as I did report my aarch64 test case issue previously and I
thought this series was to attempt to fix things so the recipe did work
generically.

If I merge this to fix x86_64, I think people will then just ignore the
other cases and things will remain broken there which worries me a lot
and means we can't generically enable rust SDKs for the project and
gain autobuilder testing to spot future regressions.

Obviously you want your use case fixed though. I will try and evaluate
things a bit more tomorrow. What I don't want to do is merge a fix
which then makes it harder to get things correctly done in future
though, particularly when I know there will be an instant backport
request to an LTS as soon as I accept it for master.

We never should have accepted these rust cross-canadian recipes at all
as they are just broken :(.

Cheers,

Richard