[Buildroot] need help for fixing some build problems

[Buildroot] need help for fixing some build problems

[Michel Alex]

Hello,

I have a question about libzenoh-c package, which currently can not be build by the autobuilder for following architectures:

http://autobuild.buildroot.net/results/680f25769526e5eef43d254a10a525b165846c75/
http://autobuild.buildroot.net/results/31ed69cb2ffe8e9bc13a27c3fda16c27e9855b56/
http://autobuild.buildroot.net/results/fdc74b8a42388b51cc4197c38b552559b97cbb8c/
http://autobuild.buildroot.net/results/6e7ad53d44b417f6aa62acd8b2396720f5a14e82/

The zenoh-c help page says that "zenoh-c only have support for following targets: aarch64-unknown-linux-gnu, x86_64-unknown-linux-gnu, arm-unknown-linux-gnueabi".

What is the correct way to add a dependency to Config.in file which enables the libzenoh-c only if above targets are selected?

Thanks in advance
Alex
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Re: [Buildroot] need help for fixing some build problems

[Yann E. MORIN]

Michel, All,

Thanks for helping fix build failures ! :-)

On 2024-06-03 13:26 +0000, Michel Alex spake thusly:
> I have a question about libzenoh-c package, which currently can not be build by the autobuilder for following architectures:
> http://autobuild.buildroot.net/results/680f25769526e5eef43d254a10a525b165846c75/
> http://autobuild.buildroot.net/results/31ed69cb2ffe8e9bc13a27c3fda16c27e9855b56/
> http://autobuild.buildroot.net/results/fdc74b8a42388b51cc4197c38b552559b97cbb8c/
> http://autobuild.buildroot.net/results/6e7ad53d44b417f6aa62acd8b2396720f5a14e82/
> 
> The zenoh-c help page says that "zenoh-c only have support for
> following targets: aarch64-unknown-linux-gnu, x86_64-unknown-linux-gnu,
> arm-unknown-linux-gnueabi".
> 
> What is the correct way to add a dependency to Config.in file which
> enables the libzenoh-c only if above targets are selected?

Se the manual for how to do that:

    https://buildroot.org/downloads/manual/manual.html#_config_files

Basically, you'd introduce a blind option (elided for brevity):

    config BR2_PACKAGE_LIBZENOH_C_ARCH_SUPPORTS
        bool
        depends on BR2_PACKAGE_HOST_RUSTC_TARGET_ARCH_SUPPORTS
        default y if BR2_aarch64
        default y if BR2_arm
        default y if BR2_x86_64

    config BR2_PACKAGE_LIBZENOH_C_ARCH_SUPPORTS
        bool "zenoh-c"
        depends on BR2_PACKAGE_LIBZENOH_C_ARCH_SUPPORTS
        depends on BR2_TOOLCHAIN_USES_GLIBC

    comment "zenoh-c needs a glibc toolchain"
        depends on BR2_PACKAGE_LIBZENOH_C_ARCH_SUPPORTS
        depends on !BR2_TOOLCHAIN_USES_GLIBC

Regards,
Yann E. MORIN.

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