Reid-LLVM

Attempt at re-creating Reid, this time using LLVM.

Various notes in order to get this working properly

This is what worked for me, might not (probably) work for you, depending on various versions of various libraries.

Compiling LLVM 16.0.0

Context

Context for my computer. I am on ArchLinux, and here are some libraries and their current versions that I have installed as of compiling, I'm not sure what of them are relevant, if any, but saving them here still feels like a good idea for the future:

cmake 3.27.0-1
lib32-llvm-libs 15.0.7-1
llvm 15.0.7-3
llvm-libs 15.0.7-3
gcc 13.1.1-2
gcc-libs 13.1.1-2
lib32-gcc-libs 13.1.1-2
lld 15.0.7-2
lldb 15.0.7-3
clang 15.0.7-9
make 4.4.1-2
automake 1.16.5-2

Commands

wget https://github.com/llvm/llvm-project/releases/download/llvmorg-16.0.0/llvm-16.0.0.src.tar.xz
wget https://github.com/llvm/llvm-project/releases/download/llvmorg-16.0.0/cmake-16.0.0.src.tar.xz

tar xvf llvm-16.0.0.src.tar.xz
tar xvf cmake-16.0.0.src.tar.xz

mv cmake-16.0.0.src cmake

cd llvm-16.0.0.src

cmake -B build -DCMAKE_INSTALL_PREFIX=$HOME/llvm-16 -DCMAKE_BUILD_TYPE=MinSizeRel -DLLVM_ENABLE_ASSERTIONS=ON -DLLVM_INCLUDE_TESTS=OFF

make -j8

Also Note: Building LLVM with Ninja was not successful for me, but this method was. Ninja may be successful with you, to try it, add -G Ninja to the cmake-command, and instead of make run ninja install.

Building this crate itself

Assuming llvm-16.0.0.src from the previous step was at /path/llvm-16.0.0.src, building this crate can be done via the following command:

LLVM_SYS_160_PREFIX=/path/llvm-16.0.0.src/build cargo build

In conclusion

Good luck! It took me a good 10 hours to figure this out for myself, I sure hope these instructions help both myself and someone else in the future!

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