Create universal binaries for Apple Silicon

[konsuko]

I stumbled upon #3966 and also thought that it would be great if TrenchBroom was compiled into a universal/Apple Silicon (ARM64) binary.

I am using TrenchBroom on my 2021 MacBook Pro (M1 Max) and currently, the build does run - however, since it's being translated through the Rosetta layer, it runs quite slowly and is not super pleasant to use.

Would be awesome! :)

[kduske]

vcpkg does not yet support universal binaries: microsoft/vcpkg#19454

Alternatively, we can produce two separate binaries, one for x86-64 and one for arm64. I think I'll do that for now.

[kduske]

Creating a separate binary for arm64 is also difficult as long as github doesn't provide arm64 runners. Cross compiling from x84 for arm64 will also be a lot of effort. We can revisit this once either vcpk supports universal binaries better or when github adds a native arm64 runner for macOS. Feel free to ping me every couple of weeks ;-)

[photex]

Seems like this is now in Public Beta: github/roadmap#528

[kduske]

I'll take another look. Maybe as a first step I can offer both x86 and Apple Silicon builds, and then merge them into a fat binary later.

[kduske]

Unfortunately I cannot find any info on how to use these new runners.

[photex]

Well, thanks for taking a look in any case. :)

[kduske]

Maybe they'll publish instructions soon. I'll keep checking back.