RFC: toolchain for building eBPF modules within the OpenWrt build system

[Felix Fietkau]

On 2021-10-04 15:20, Jo-Philipp Wich wrote:
> Hi Felix,
> 
> I'd suggest to require a preinstalled host toolchain for the time being.
How about requiring a preinstalled host toolchain by default, but 
building it from source on buildbot?

If we rely on the toolchain on the host, the builds might vary based on 
the installed llvm versions and would not be properly reproducible.

I'm currently writing a makefile for it and putting it in tools/ instead 
of toolchain/ in order to avoid unnecessary rebuilds when the configured 
target changes.

- Felix