That rust comment does sound weird. It's one of the easiest to compile across platforms. All you need is the rust toolchain and may be openssl sometimes.
The easiest to cross compile would be golang, it’s as easy as setting 1-2 environment variables. Last I used rust it required tool chain setup, which if you’re not familiar with the process and be quite difficult.
I tried cross-compiling a Rust project from ARM macOS host to ARM Linux target, compiling source files is still fine, but during linking stage it threw lots of lots of errors. And it’s a pure Rust project without any system library dependencies. Seems that the system linker also needs to support the target platform, or cross compiling won’t work.
