Downloading Clang

Download LLVM 18.1.6.

https://github.com/llvm/llvm-project/releases/download/llvmorg-18.1.6/llvm-project-18.1.6.src.tar.xz --no-check-certificate wget

Decompress the LLVM source package.

1	tar -xvf llvm-project-18.1.6.src.tar.xz

Compile and install LLVM 18.1.6.

cd llvm-project-18.1.6.src
cd llvm
mkdir build && cd build 
cmake -DCMAKE_BUILD_TYPE=Release ..
make -j `nproc` && make -j `nproc` install
cd ../../clang
mkdir build && cd build
cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release ../../llvm -DLLVM_ENABLE_PROJECTS="clang;compiler-rt;clang-tools-extra;openmp;lldb;lld"
make -j `nproc` && make -j `nproc` install

Check the Clang version.
1
clang --version

Parent topic: Installing Environment Dependencies