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

[Ralf Jung via llvm-branch-commits]

RalfJung wrote:

> 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").

Ah, I didn't catch the shifted `.so` -- sounds right.

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

I have no idea, as I said I am working on a tool that fails to link now but have no direct contact with our LLVM stuff otherwise.^^ @nikic would know more.

At this point we seem to be on-track for fixing this so a revert would probably be extra work for us. But other users that tested rc3 may still be surprised by this I guess.

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