rust-lld works in most of cases but here not. I don't know why. I failed to reproduce this error without the libs in the libs folder.

Reproduce

cargo build creates an error rust-lld: error: undefined symbol: checksum(void const*, int)

Uncomment the line in .cargo/config.toml

cargo build works.

History

I created a module for the game Garry's Mod. For this I used https://github.com/danielga/garrysmod_common with the branch x86-64-support-sourcesdk. This repo contains a way to compile using premake. By default it creates some static libs and using these static libs and your own C++ project, it creates a shared lib. This shared lib can be used with the game Garry's Mod. But because I prefer Rust I modified a line in the premake configs to create a static lib instead of a shared lib. I compiled using the command make config=release_x86_64 and it created some default static libs and a static lib for my project. In this case in the folder libs libexample.a is my project and libtier1.a a default static lib.

One day I updated with rustup. This update added rust-lld. After I had an undefined symbol: error. When I added rustflags = ["-Zlinker-features=-lld"] in .cargo/config.toml it worked again. That's when I discovered that rust-lld is broken.