Jonathan Chambers created ARROW-2734:
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Summary: Cython api example doesn't work by default on macOS
Key: ARROW-2734
URL: https://issues.apache.org/jira/browse/ARROW-2734
Project: Apache Arrow
Issue Type: Improvement
Components: Python
Affects Versions: 0.9.0
Environment: macOS 10.13
Reporter: Jonathan Chambers
The setup.py + example.pyx given in the docs:
[https://arrow.apache.org/docs/python/extending.html#example]
doesn't work on macOS.
The first issue is the error:
*example.cpp:603:10:* *fatal error:* *'unordered_map' file not found*
because (AFAIU) macOS clang doesn't include the required C++11 lib by default.
This can be solved by adding:
{code:java}
os.environ['CFLAGS'] = '-std=c++11 -stdlib=libc++'
{code}
to setup.py
The second issue is that the line
{code:java}
ext.library_dirs.append(pa.get_library_dirs())
{code}
should be
{code:java}
ext.library_dirs.extend(pa.get_library_dirs())
{code}
otherwise this causes a (completely uninformative) typerror during the build
because library dirs ends up being a list of list instead of a list of string.
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