Joris Van den Bossche created ARROW-18126:
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Summary: [Python] ARROW_BUILD_DIR might be ignored for building
pyarrow?
Key: ARROW-18126
URL: https://issues.apache.org/jira/browse/ARROW-18126
Project: Apache Arrow
Issue Type: Bug
Components: Python
Reporter: Joris Van den Bossche
When building pyarrow, I see the following warning:
{code}
CMake Warning:
Manually-specified variables were not used by the project:
ARROW_BUILD_DIR
{code}
While we have a note in our docs
(https://arrow.apache.org/docs/dev/developers/python.html#build-and-test) that
says:
bq. If you used a different directory name for building Arrow C++ (by default
it is named “build”), then you should also set the environment variable
{{ARROW_BUILD_DIR='name_of_build_dir'}}. This way PyArrow can find the Arrow
C++ built files.
I see in the setup.py code that we check for this env variable and pass it to
CMake, but it's not actually used in any of the CMakeLists.txt files for
pyarrow.
This might have been accidentally changed in one of the recent cmake refactors?
(cc [~kou] [~alenka])
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