Building a bunch of LLVM versions from source

llvm-builder.bash

CONTAINER='debian:buster'

if [ ! -d ~/repos/llvm-project ]; then
    mkdir -p ~/repos/
    cd ~/repos/
    git clone https://github.com/llvm/llvm-project.git
fi

mkdir -p ~/repos/llvm-bin/
cat << EOF > ~/repos/llvm-bin/build.bash
#!/bin/bash
set -x
set -e

apt update
apt install -y python3 git cmake clang build-essential


cat << EOT > /tmp/hello.c
#include <stdio.h>
int main() {
    printf("Hello, World!\n");
    return 0;
}
EOT

versions=("14.0.6" "13.0.1" "12.0.1" "11.1.0" "10.0.1" "9.0.1" "8.0.1" "7.1.0" "6.0.1" "5.0.2" "4.0.1")
for version in \${versions[*]}; do
    cd /llvm
    git clean -xf
    git checkout "llvmorg-\$version"

    rm -rf /llvm/install /llvm/build
    mkdir -p /llvm/install /llvm/build
    cd /llvm/build
    cmake -DLLVM_ENABLE_PROJECTS=clang -DCMAKE_BUILD_TYPE=Release  -DCMAKE_INSTALL_PREFIX=../install -G "Unix Makefiles" ../llvm
    make -j`nproc`
    make install

    rm -f /tmp/hello
    /llvm/install/bin/clang -v
    /llvm/install/bin/clang /tmp/hello.c -o /tmp/hello
    /tmp/hello

    mv /llvm/install "/llvm-bin/llvm-\$version"
    export CC="/llvm-bin/llvm-\$version/bin/clang"
    export CXX="/llvm-bin/llvm-\$version/bin/clang++"
done
EOF
chmod +x ~/repos/llvm-bin/build.bash


docker run -w /llvm -v "$(pwd)/llvm-project:/llvm" -v "$(pwd)/llvm-bin:/llvm-bin" $CONTAINER /llvm-bin/build.bash