this post was submitted on 29 Jul 2023
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Programming
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The magical thing here are C header files. While it is certainly possible to crosscompile using traditional tooling, what zig does here is an all-in-one package that lets you cross-compile not only to a different architecture, but a different libc or operating system. Most impressive is it's support for selecting target glibc version.
Actually there was some effort (I think currently on halt) to make those headers usable outside of zig. So yeah, it's not a thing that is (or rather must be) zig specific, but right now zig is the only language that does that AFAIK
Like I said - you can build a distribution of LLVM with your favorite targets, including sysroots and have it cross compile with ease (or you can download toolchains that others built). What zig does is not special and it is highly misleading (and needlessly contrarian) to claim that clang/LLVM is not capable of doing the same when the very thing enabling zig to do this is LLVM.