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Comment by motiejus | Hacker News Reader

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motiejus·

Zig cross-compiler toolchain is fantastic: weighs ~40MB, includes clang-12, musl, glibc (v2.2-2.33, selectable).

I wrote a bazel toolchain on top of it, will blog about it sometime soon: https://sr.ht/~motiejus/bazel-zig-cc/

This gives me a hermetic C/C++ compiler for my cgo programs.

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That's awesome! How have you gotten it to work with CGo though? A simple CC="zig cc" doesn't seem to work because CGo (as of 1.16) tries to use -E which zig cc doesn't seem to support ...

I wrote a blog post about using Zig with CGo, the main problem is that CGo doesn't expect the CC command to have a space in it and the workaround is to wrap the Zig invocation inside a bash script.

https://dev.to/kristoff/zig-makes-go-cross-compilation-just-...

As a related note, it seems that Go 1.17 won't have the fix as the relative patch has not been merged (see https://go-review.googlesource.com/c/go/+/276412/ ). Would be awesome if somebody from the Go team saw this post and made it happen :)

Thanks a lot, I was trying to use it all day yesterday and just couldn't get it work. Zig and Go are a great match it seems.

Zig should work like multi call binaries (i.e. busybox) so a link to it called cc or would call the compiler.

Yeah, my brother opened an issue similar to this earlier - there is actually a quite cool proposal for something like this here now: https://github.com/ziglang/zig/issues/8973

Yes, it works for all cgo programs I have tried it with, including a shared library. There were a few workarounds I needed to apply, they are in "known issues" section.

Does this also support compiling zig? I wanted to have zig in bazel

No, and I don't have plans to add it, though a contribution would be welcome.

It's a matter of writing a rule. Best follow Jay Conrod's "awesome bazel", IMO that gives enough in terms of documentation to make it happen.

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