[llvm-branch-commits] [llvm] release/18.x: [cmake] Add minor version to library SONAME (#79376) (PR #82409)

[Nikita Popov via llvm-branch-commits]

nikic wrote:

> @RalfJung Are you configuring LLVM with -DLLVM_VERSION_SUFFIX=-rust-1.78.0-nightly ?

Yes.

> So the problem Rust sees isn't that a ".1" was added to the version, but rather that the name was changed from "libLLVM-18-rust-1.78.0-nightly.so" to "libLLVM.so.18.1-rust-1.78.0-nightly". (that is: all the version info previously went into the library name which comes before ".so", and now goes into the library version which comes after ".so").

Right. The new scheme requires a symlink for linking, and rustup components currently do not support symlinks. But thankfully we can use a linker script instead of a symlink to sidestep the issue.

https://github.com/llvm/llvm-project/pull/82409