build_ccls.sh

#!/usr/bin/env bash

set -e

git submodule update --init --recursive

if [ -d "ccls" ]; then
    cd ccls
    mkdir -p llvm && cd llvm

    readonly SHORT_CODE=$(lsb_release -cs)
    if [ "${SHORT_CODE}" == "focal" ]; then
        LLVM_BASENAME="clang+llvm-12.0.0-$(uname -m)-linux-gnu-ubuntu-20.04"
        wget -c "https://github.com/llvm/llvm-project/releases/download/llvmorg-12.0.0/${LLVM_BASENAME}.tar.xz"
        echo "a9ff205eb0b73ca7c86afc6432eed1c2d49133bd0d49e47b15be59bbf0dd292e  ${LLVM_BASENAME}.tar.xz" | sha256sum --check
    elif [ "${SHORT_CODE}" == "bionic" ]; then
        LLVM_BASENAME="clang+llvm-9.0.0-$(uname -m)-linux-gnu-ubuntu-18.04"
        wget -c "https://releases.llvm.org/9.0.0/${LLVM_BASENAME}.tar.xz"
        echo "a23b082b30c128c9831dbdd96edad26b43f56624d0ad0ea9edec506f5385038d  ${LLVM_BASENAME}.tar.xz" | sha256sum --check
    fi

    rm -rf "${LLVM_BASENAME}"
    tar -xf "${LLVM_BASENAME}.tar.xz"

    cd ..
    cmake -H. -BRelease -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="./llvm/${LLVM_BASENAME}"
    cmake --build Release -- "-j$(nproc)"
fi