Invoke compiler for other targets

[daurnimator]

It would be interesting if you could e.g. invoke the compiler with the bpf target (passing a function) while compiling a linux x86 application. The output would be returned as a slice, which you could pass to the kernel with BPF_PROG_LOAD.

This would have other interesting applications, e.g. you could embed a program inside of an emulator.

[daurnimator]

Another more mainstream use-case: embedding wasm output.

[shawnl]

Also, you might want to be able to call the LLVM bindings during comptime. This would require co-routines or blocks to be implemented, so you pass arond LLVM BasicBlock and annonymous functions, and then attach them to zig code.

[andrewrk]

I'm confident that involving the build system here is the right way to go. I've done this use case myself:

https://github.com/andrewrk/clashos/blob/03f78509577b3d373b58cf0cf7943529cc5eb4eb/src/main.zig#L253
https://github.com/andrewrk/clashos/blob/03f78509577b3d373b58cf0cf7943529cc5eb4eb/build.zig#L13-L20