This is really something more languages should strive for.

Most languages these days obviate cross-compilation in the first place by being interpreted. Of the languages that remain, the natively-compiled ones, most haven't gone to Go's lengths of writing a custom libc, which is emphatically not recommended for both Windows and Mac (the syscall interfaces aren't stable, and this has broken Go code in the past: https://github.com/golang/go/issues/16272 ). And gc, the primary Go compiler and the one with out-of-the-box cross-compilation, supports relatively few platforms (I count 11, whereas rustc looks like it supports 50-70 platforms). You can use gccgo to get more platforms, but AFAICT gccgo's cross-compilation story isn't nearly as nice: https://github.com/golang/go/wiki/GccgoCrossCompilation .

For Rust, cross-compilation looks like this:

1. Install the libc for the target system, and, if necessary, a compatible linker.

2. Run `rustup target add foo` where "foo" is one of the target triples on https://forge.rust-lang.org/platform-support.html

3. Add the target triple to your Cargo.toml.

Which isn't too shabby. You can read more about it here: https://github.com/japaric/rust-cross