ubuntu_install_llvm.sh

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set -e
set -u
set -o pipefail

echo deb http://apt.llvm.org/focal/ llvm-toolchain-focal main\
     >> /etc/apt/sources.list.d/llvm.list
echo deb-src http://apt.llvm.org/focal/ llvm-toolchain-focal main\
     >> /etc/apt/sources.list.d/llvm.list

echo deb http://apt.llvm.org/focal/ llvm-toolchain-focal-12 main\
     >> /etc/apt/sources.list.d/llvm.list
echo deb-src http://apt.llvm.org/focal/ llvm-toolchain-focal-12 main\
     >> /etc/apt/sources.list.d/llvm.list

echo deb http://apt.llvm.org/focal/ llvm-toolchain-focal-13 main\
     >> /etc/apt/sources.list.d/llvm.list
echo deb-src http://apt.llvm.org/focal/ llvm-toolchain-focal-13 main\
     >> /etc/apt/sources.list.d/llvm.list

wget -q -O - https://apt.llvm.org/llvm-snapshot.gpg.key|sudo apt-key add -

apt-get update && apt-get install -y \
     llvm-13 \
     clang-13 libclang-13-dev