Cross-compiling to x86_64-unknown-linux-gnu fails

When I try to compile some rust code to x86_64-unknown-linux-gnu using cargo build --target x86_64-unknown-linux-gnu, it will always error out with this:

error: linking with `cc` failed: exit status: 1
(a whole bunch of file paths)
 = note: clang: warning: argument unused during compilation: '-pie' [-Wunused-command-line-argument]
          ld: unknown option: --as-needed
          clang: error: linker command failed with exit code 1 (use -v to see invocation)

error: could not compile `my-project` due to previous error

What does this mean and how do I fix it?

(from x86_64-apple-darwin to x86_64-unknown-linux-gnu)

You have a macOS-only linker, which doesn't support linking Linux executables. Rust doesn't support cross-compilation out of the box of anything other than static libraries. You need to get a Linux-compatible linker from somewhere, and configure Cargo to use it.

Alternatively, build inside a Docker image:


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