Creating a Docker image with clang, llvm-config, and LLVM libs - help

Beginners
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1

Hi LLVM forums,

I’m trying to create a Docker image with clang-15, llvm-config, and LLVM libs. I’ve been following the guide located at …A guide to Dockerfiles for building LLVM… and I have successfully built a Docker image with clang-15 and llvm-config but I’m unsure of how to keep the libraries that are used for building clang-15 and llvm-config. My end goal is to use these libraries in a LibTooling project.

I’m creating the Dockerfile with

./llvm/utils/docker/build_docker_image.sh \
    --source debian10 \
    --docker-repository clang-debian10 --docker-tag "staging" \
    -p clang -i install-clang -i install-clang-resource-headers \
    -i install-llvm-config \
    -- \
    -DCMAKE_BUILD_TYPE=Release

Could anybody help me or point me in the right direction?

Thank you.

2

I managed to solve my own problem by running the following commands:

# Clone LLVM repo
git clone https://github.com/llvm/llvm-project.git && \
    cd llvm-project && git checkout release/14.x && \
    cd llvm && mkdir build

# CMake llvm build
cmake -GNinja \
    -DCMAKE_INSTALL_PREFIX=/tmp/llvm \
    -DCMAKE_MAKE_PROGRAM=/usr/local/bin/ninja \
    -DCMAKE_BUILD_TYPE=Release \
    -DLLVM_ENABLE_PROJECTS=clang \
    -S /llvm-project/llvm -B /llvm-project/llvm/build

# Build libraries, headers, and binaries
cd /llvm-project/llvm/build && \
    ninja install-llvm-libraries install-llvm-headers \
        install-clang-libraries install-clang-headers install-clang \
        install-clang-resource-headers install-llvm-config install-cmake-exports
1 Like
3

As of llvm-12, this unfortunately does not work, because install-cmake-exports exports many additional targets, which are apparently not installed by the other install-* arguments used in this command. Missing CMake exported targets make the CMake build of a user application project to fail. That’s why I believe this install-* system is in fact unusable and hasn’t been designed thoughtfully enough. Only using a plain install results into a fully usable installation.