[ARROW-5751] [Packaging][Python] Python macOS wheels have dynamic dependency on libcares

• Type: Improvement
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 0.14.0
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/22176
• Assignee: Wes McKinney
• Reporter: Philipp Moritz
• Created: 27/Jun/19 01:24
• Updated: 11/Jan/23 07:42
• Resolved: 27/Jun/19 16:56

Description

I'm afraid while https://github.com/apache/arrow/pull/4685 fixed the macOS wheels for python 3, but the python 2.7 wheel is still broken (with a different error):

ImportError: dlopen(/Users/pcmoritz/anaconda3/lib/python3.6/site-packages/pyarrow/lib.cpython-36m-darwin.so, 2): Library not loaded: /usr/local/opt/c-ares/lib/libcares.2.dylib

  Referenced from: /Users/pcmoritz/anaconda3/lib/python3.6/site-packages/pyarrow/libarrow_python.14.dylib

  Reason: image not found

I tried the same hack as in https://github.com/apache/arrow/pull/4685 for libcares but it doesn't work (removing the .dylib fails one of the earlier build steps). I think the only way to go forward on this is to compile grpc ourselves. My attempt to do this in https://github.com/apache/arrow/compare/master...pcmoritz:mac-wheels-py2 fails because OpenSSL is not found even though I'm specifying the OPENSSL_ROOT_DIR (see https://travis-ci.org/pcmoritz/crossbow/builds/550603543). Let me know if you have any ideas how to fix this!

Issue Links

• links to: GitHub Pull Request #4725