LLVM-build

Make building LLVM and switching between commits painless.

Usage

Create an issue with the desired LLVM commit as its title
When the build is ready, the issue should be closed and you will receive an email by default
The build will appear in releases
Download and extract it in /tmp/llvm-project
Example: curl -L https://github.com/TianyiChen/llvm-build/releases/download/48a8c7dc/clang11-virtualroot.tar.gz| tar -xz

Set environment variables

export LLVM_VIRT=/tmp/llvm-project/virtualroot
export PATH=$LLVM_VIRT/bin:$PATH
export LD_LIBRARY_PATH=$LLVM_VIRT/lib:$LD_LIBRARY_PATH

Issues in this repository are meant to be handled by scripts, issues for humans can be submitted at https://github.com/TianyiChen/llvm-build-issues/issues

Instead of clone and checkout, there’s another way git fetch origin <commit>, which does not differ much in benchmark.
LLVM needs to be compiled with itself (currently clang-11) if you are making intensive use of it (for example, running it with a plugin). Otherwise you may encounter some mysterious issues.

If you want to store the binaries somewhere else, you can create a link:

# run within the folder for actural storage
ln -s $PWD /tmp/llvm-project

Getting commits by date: https://github.com/llvm/llvm-project/commits/master?until=2020-04-30
https://api.github.com/repos/llvm/llvm-project/commits?until=2020-04-30