If you install Zig, you can now generate executables for virtually any target with just a CLI argument specifying the target, regardless of what machine you installed it on. Nothing else does that--cross compilation generally requires compiling the compiler to target a different architecture.
Apparently; I wasn't aware. But unlike Zig this doesn't work with FFI ... everything has to be Go code ... cross compilation works by compiling the library code for the target and caching it ... but if you need anything outside of that you're out of luck ... or maybe not ... I ran across this tidbit:
"When a Go project utilizes CGo to interact with C code, standard Go cross-compilation might require additional steps. This is because Go can cross-compile Go code but not C code directly, necessitating the availability of target system libraries on the development machine. Tools like Zig can be used as a C compiler (zcc) to facilitate cross-compilation for CGo-dependent projects by providing the necessary cross-compilation capabilities for the C code."
