Is it possible to build/link a single recipe with musl if glibc is the default

Is it possible to build/link a single recipe with musl if glibc is the default

[Kevin]

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Hello,

We're building a custom image and using glibc as the standard library.  We have a need for a couple recipes that produce binaries that need to be 100% statically linked (using musl).  Is this possible to do?  Is this achievable with the multilib class?  Is there another approach that is worth looking into or is this not possible?  It is not desirable in our case to change the default libc to musl, we'd prefer to only use musl in a couple recipes if at all possible.

Thanks,
Kevin

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Re: [poky] Is it possible to build/link a single recipe with musl if glibc is the default

[Chen Qi]

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On 11/26/2019 09:28 AM, Kevin via Lists.Yoctoproject.Org wrote:
> Hello,
>
> We're building a custom image and using glibc as the standard 
> library.  We have a need for a couple recipes that produce binaries 
> that need to be 100% statically linked (using musl).  Is this possible 
> to do?

Usually, it's not possible to do so.

> Is this achievable with the multilib class?

No.

> Is there another approach that is worth looking into or is this not 
> possible?

You could look into multiconfig support. That may solve your problem. 
But it's a little hacky.

>   It is not desirable in our case to change the default libc to musl, 
> we'd prefer to only use musl in a couple recipes if at all possible.

Is it about license? I think it should be the only reason. If not, you 
may need to reconsider your design.

Another simple option is that you build the statically linked binaries 
in advance for all archs that you need to support, and then copy them 
onto the target at rootfs time.
I think multiconfig could solve your problem, but I myself haven't tried 
it out.

Regards,
Chen Qi

>
> Thanks,
> Kevin
>
>
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