Fix the codebase for latest zig and zld changes

[kubkon]

which include:

• ast fixes
• extern enum(i32) is now enum(i32)
• there is no need for ZIG_SYSTEM_LINKER_HACK on macOS

The last change depends on ziglang/zig#9229

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Hope you don't mind the PR @floooh; I used your awesome project as a test ground for my linker work so thought I might as well contribute fixes for latest master. If you feel this should go in a different branch than main, lemme know and I'll redo a PR onto a different branch!

[floooh]

Very cool thanks! I guess those changes are not compatible with the public 0.8.0 version? If so I will just merge them into a new 0.9.0 branch, which will then become main when zig switches to 0.9.0.

[floooh]

PS: the changes to sokol_gfx.zig etc also need to be done in the original code generation scripts here (https://github.com/floooh/sokol/tree/master/bindgen), but I will take care of that.

[kubkon]

Very cool thanks! I guess those changes are not compatible with the public 0.8.0 version? If so I will just merge them into a new 0.9.0 branch, which will then become main when zig switches to 0.9.0.

Correct, these changes require nightly build of the compiler and will not make it into a release cut until 0.9.0. Do you want me to re-push into 0.9.0 branch when you create it, or you'd rather take it from here?

[floooh]

or you'd rather take it from here?

I'll take over, no worries :)

[floooh]

Ok, there's now a branch zig-0.9.0 which works with the current zig dev version (not by merging this PR though, instead, the Zig bindings received another PR which makes them compatible both with 0.8.0 and 0.9.0, and the remaining fixes here in this repo where very few).