support arm64 builds

[linuxmaniac]

planning to add support for arm64

[linuxmaniac]

@mika what is missing from our side to be able to add arm64 architecture in the builds?

[mika]

@linuxmaniac I'd say setting up arm64 based jenkins slaves? All the building blocks should be there, so I'd say let's look into this together? :)

[linuxmaniac]

I would say we just need to cross-build in the same nodes.

[mika]

Also fine for me, though did you test what build times we'd have? (arm64 via qemu is wayyyy slower than native builds)

[guillemj]

We might only need to use qemu if we want to run arm64 code, such as from the test suite. Otherwise using the gcc crosstoolchains should be enough. We'd need to check whether the kamailio code is cross-buildable though. :)

[linuxmaniac]

Yes, we don't need to run any arm64 code, just build it. And yes, kamailio can be built and executed in arm64.