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An minimal NGSolve addon with Python bindings\n\n## using the project template\nTo create your own NGSolve addon project you perfrom the following steps:\n\n1. git-fork this project\n2. fill the project with your C++ and Python files\n3. adapt CMakeList.txt (addon_name, C++ and Python files)\n4. adapt file pyproject.toml, section [project]\n5. adapt `src/__init__.py` file\n6. adapt `README.md` for installation instructions for your addon-project\n\n## installing the addon project\n\nQuick install: install the addon package directly with pip from git:\n\n    python -m pip install  git+https://github.com/NGSolve/ngsolve-addon-template.git\n\n\n**Alternative** needed for self-compiled NGSolve\n\n    python -m pip install scikit-build-core pybind11_stubgen toml\n    python -m pip install --no-build-isolation git+https://github.com/NGSolve/ngsolve-addon-template.git\n\n\ntest it:\n\n    python -m ngsolve_addon_template.demos.exploremesh\n\nStep-by-step installation:\n\nsimple step-by-step installation using pip:\n\n    git clone https://github.com/NGSolve/ngsolve-addon-template.git\n    cd ngsolve-addon-template\n    python -m pip install --no-build-isolation .\n\nalternative step-by-step installation using `cmake`:\n\n    git clone https://github.com/NGSolve/ngsolve-addon-template.git\n    cd ngsolve-addon-template\n    mkdir build\n    cd build\n    cmake ..\n    make -j4 install\n\n## Troubleshooting\n\n### Problem\nError in gihub actions when building Linux package:\n\n```\n    ImportError: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.20' not found\n```\n\n### Solution\nUpdate `pyproject.toml` by adding the following line to the `[tool.cibuildwheel]` section:\n\n```toml\n[tool.cibuildwheel]\nmanylinux-x86_64-image = \"manylinux_2_28\"\n```\n\nSome more NGSolve addons you can find here:\n  * https://github.com/TUWien-ASC/NGS-myfe (including vs-code 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