Antoine Pitrou created ARROW-17580:
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Summary: [Doc][C++][Python] Unclear how to influence compilation
flags
Key: ARROW-17580
URL: https://issues.apache.org/jira/browse/ARROW-17580
Project: Apache Arrow
Issue Type: Bug
Components: C++, Documentation, Python
Reporter: Antoine Pitrou
Frequently people need to customize compilation flags for C++ and/or C files.
Unfortunately, both for Arrow C++ and PyArrow, it is very difficult to find out
the proper way to do this.
For Arrow C++, it seems {{ARROW_CXXFLAGS}} should be passed to CMake, while the
{{CXXFLAGS}} environment variable is ignored (it probably shouldn't?).
For PyArrow, I have not found a way to do it. The {{CXXFLAGS}} environment is
ignored, and the {{PYARROW_CXXFLAGS}} has two problems:
* it is only recognized for Cython-generated files, not for PyArrow C++ sources
* it only affects linker calls, while it should actually affect compiler calls
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