8000 Changing location of libodbc.2.dylib on macOS · Issue #681 · mkleehammer/pyodbc · GitHub
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Changing location of libodbc.2.dylib on macOS #681
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@paw-lu

Description

@paw-lu

Environment

To diagnose, we usually need to know the following, including version numbers. On Windows, be
sure to specify 32-bit Python or 64-bit:

  • Python: 3.7.6
  • pyodbc: 4.0.28
  • OS: macOS 10.14.4
  • driver: freetds

Issue

When importing pyodbc

❯ python
>>> import pyodbc
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: dlopen(/Users/pcosta/Documents/test/myenv/lib/python3.7/site-packages/pyodbc.cpython-37m-darwin.so, 2): Library not loaded: /usr/local/opt/unixodbc/lib/libodbc.2.dylib
  Referenced from: /Users/pcosta/Documents/test/myenv/lib/python3.7/site-packages/pyodbc.cpython-37m-darwin.so
  Reason: image not found

I know why this is happening, as I don't have libodbc.2.dylib in the expected location. The reason is I do not have permission to write to /usr/local/, so I have Homebrew installing into ~/.brew. This mostly works fine. I am even able to get both tsql and isql working as expected by following the steps outlined here: https://github.com/mkleehammer/pyodbc/wiki/Connecting-to-SQL-Server-from-Mac-OSX.

So I do have libodbc.2.dylib, it's just that it lives in /Users/pcosta/.brew/opt/unixodbc/lib, not /usr/local/opt/unixodbc/lib.

The main questions is can I get pyodbc to look for libodbc.2.dylib (and other associated files) in another directory?

I have all the files needed and have configured them correctly, I just need to repoint pyodbc somehow.

Thanks!

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