This reverts commit 744315b . This was fine at the time that it was committed but now we want to use the output of build-llvm.py to build Rust from source and that does not work too well with thin archives. Signed-off-by: Nathan Chancellor <nathan@kernel.org>
We will be adding Rust support in the future, so pull out common git repository management code from LLVMSourceManager that can be shared with a RustSourceManager. Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Currently, the distribution created by LLVMSlimBuilder is not very flexible, even though it may be used in two different but similar manners: creating a slim toolchain for LLVM to build itself or creating a slim toolchain for building the Linux kernel. While there is a lot of overlap between the two, there may not be much overlap for other purposes that may come up in the future, like building Rust. Introduce the concept of distribution profiles, which allow customizing the distribution based on use case. Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Allow the user to customize the final stage's distribution based on the available profiles. Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Building Rust requires many more components that can significantly increase the size of a distribution installation. Add a Rust distribution profile so that these things can be included only when a user cares about building Rust. Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
There a lot of options missing and it does not do any fancy kind of build. But it is a start, and it is already useful, e.g. Peter could have used it to test the new KCFI arity flag that requires LLVM 21 but upstream Rust still uses LLVM 20. I took the approach that the new script only takes care of building Rust provided an existing LLVM, which seemed simple and clear. Thus add the basic infrastructure, plus a bit of documentation. Add it to the CI, too. I successfully built it in a clean Debian 12 and Fedora 41. Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Nathan Chancellor <nathan@kernel.org>
By default, configure shortens its output but it is worth printing all of the information to allow the user to verify everything is correct. Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Merged