Fix build.zig to be used as dependency, and various other changes.

[iacore]

No description provided.

[linusg]

Vendor bdwgc source

That is most definitely not required to make this work, see linusg@c6ec34e

[plajjan]

@linusg @iacore FYI, the upstream bdwgc library now has a build.zig file so rather than pulling in bdwgc as a git submodule I think that could be used as a zig package dependency. It supports way more compilation options etc.

[linusg]

Nice, thanks for the heads-up :)

I think that means I can retire https://codeberg.org/linusg/zig-build-libgc and update my fork to use this directly, will look into that.

[iacore]

FYI, the upstream bdwgc library now has a build.zig file

https://github.com/ivmai/bdwgc/blame/2ba7381b61be371ffdbfcaf84e6a4ff19e0b43cc/build.zig#L18

const zig_min_required_version = "0.12.0-dev.2015";

The last stable Zig version is 0.11.0.

[glyh]

FYI the upstream bdwgc build.zig doesn't provide the package as a zig module, which is preferred to being used as a dependency for any zig program.

[iacore]

I've updated this library to be used with Zig 0.15.1.
0.14.1 is a bit broken.