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Documentation
/ Development
/ Building DuckDB
Python
In general, if you would like to build DuckDB from source, it's recommended to avoid using the BUILD_PYTHON=1 flag unless you are actively developing the DuckDB Python client.
Python Package on macOS: Building the httpfs Extension Fails
Problem:
The build fails on macOS when both the httpfs extension and the Python package are included:
GEN=ninja BUILD_PYTHON=1 CORE_EXTENSIONS="httpfs" make
ld: library not found for -lcrypto
clang: error: linker command failed with exit code 1 (use -v to see invocation)
error: command '/usr/bin/clang++' failed with exit code 1
ninja: build stopped: subcommand failed.
make: *** [release] Error 1
Solution:
As stated above, avoid using the BUILD_PYTHON flag.
Instead, first build the httpfs extension (if required), then build and install the Python package separately using pip:
GEN=ninja CORE_EXTENSIONS="httpfs" make
python3 -m pip install tools/pythonpkg --use-pep517 --user
If the second line complains about pybind11 being missing, or --use-pep517 not being supported, make sure you're using a modern version of pip and setuptools.
The default python3-pip on your OS may not be modern, so you may need to update it using:
python3 -m pip install pip -U