Re: [ptxdist] Building x86_64 without host libs (e.g. zlib)

[John Graham <john.graham@codethink.co.uk>]

Thanks - it's purely so that we have a toolchain that doesn't rely on 
host tools, so that it can be distributed to other systems without 
requirements on host tools. Sounds like this approach is going to take a 
lot of work though so I think we'll look for another way.

Thanks for the help!

John


On 02/02/2025 11:42, Michael Olbrich wrote:
> On Fri, Jan 31, 2025 at 03:41:05PM +0000, John Graham wrote:
>> I'm trying to build an x86_64 toolchain that's independent of the host. By
>> default in the ptxconfigs/x86_64-unknown-linux-gnu_gcc config, it has e.g.
>> `PTXCONF_HOST_SYSTEM_ZLIB=y`. I expected I could set this to `=n`, but when
>> I do that, `ptxdist go` fails with:
>>
>> ```
>>
>> ptxdist: error: 'host-system-zlib' is not selected.
>> ptxdist: error: This can happen if the ptxconfig is outdated or
>> ptxdist: error: the package is disabled for the current architecture
>>
>> ```
>>
>> Can anyone tell me if this is the proper approach to disabling use of the
>> host libraries, and/or what I'm doing wrong? Any help appreciated!
> There are issues on multiple levels:
>
> 1. just changing the config file will not make the dependency go away. If
> you look at the package rules in rules/ you'll see multiple ones that have
> 'select HOST_SYSTEM_ZLIB'. That's what is causing the error you're seeing.
>
> 2. Even if you remove those, building will probably fail. The dependency is
> there for a reason. You would definitely need to remove the
> --with-system-zlib that's there in several places. But I'm not sure, if
> that's enough. It's quite possible that for some of the packages, zlib is
> a hard requirement.
>
> Why would you want to build without zlib anyways? It's not the only
> requirement and removing just that seem odd.
>
> Michael
>
-- 
John Graham (he/him)
Software Engineer

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