That’s right. The ldd check is more reliable as  the compiler is usually not 
available in a fresh Alpine docker container. And as shown in my the example in 
my previous email, the compiler check actually does not work in the latest 
alpine system, even when the compiler is installed.

Moreover, the ldd check will only rewrite the result on musl platform. It has 
not effect on non-musl platforms.

Lastly, I merely restore the old behavior, which has never shown any issue on 
non-musl systems.

Best Regards,

Cheng
On Nov 4, 2020, 4:45 PM -0800, Dmitry V. Levin <l...@altlinux.org>, wrote:
> On Wed, Nov 04, 2020 at 04:36:10PM -0800, Cheng XU wrote:
> > I think my patch fulfills all your requirements. It has no side effect on 
> > non-musl platform.
> >
> > Best Regards,
> >
> > Cheng
>
> Looks like it performs the compiler based check, then overrides its result
> with the result of the ldd based check. This means that you treat the ldd
> based check as the most trustworthy of these two.
>
> Thanks,
>
> > On Nov 4, 2020, 4:08 PM -0800, Dmitry V. Levin <l...@altlinux.org>, wrote:
> > > On Wed, Nov 04, 2020 at 02:57:08PM -0800, Cheng XU wrote:
> > > > Please find the patch in the attachment. Thanks.
> > > >
> > > > Best Regards,
> > > >
> > > > Cheng
> > >
> > > If you're about to reintroduce the ldd check, please make sure the most
> > > trustworthy of these checks (whatever it is) is attempted first and its
> > > result is not discarded, please do not penalize non-musl platforms
> > > unnecessarily.
> > >
> > > Thanks,
> > >
> > > > On Nov 4, 2020, 2:39 PM -0800, Ben Elliston <b...@air.net.au>, wrote:
> > > > > On Wed, Nov 04, 2020 at 02:31:05PM -0800, Cheng XU wrote:
> > > > >
> > > > > > Thanks for the info. However, it seems that the referenced issue is
> > > > > > only valid for the old version of Alpine. For the latest version,
> > > > > > the `ldd --version` works just fine. As shown in the below, the old
> > > > > > config.guess reports the correct result in a fresh alpine docker
> > > > > > container, while the new config.guess does not. Therefore, I think
> > > > > > we should just keep the original `ldd --version` check. There is no
> > > > > > harm to do so.
> > > > >
> > > > > Please suggest a patch, then.
> > > > >
> > > > > Thanks,
> > > > > Ben
> > >
> > > --
> > > ldv
>
> --
> ldv

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