[Python-Dev] build from source on mac uses clang, python.org binary uses gcc

Chris Withers chris at simplistix.co.uk
Thu Feb 14 10:18:46 CET 2013

Hi All,

I've run into "some issues" installing lxml for python 3.3 on my mac:

One of the stumbling blocks I've hit is that I built python 3.3 from 
source (./configure && make && make altinstall), and it used clang:

buzzkill:virtualenvs chris$ /src/Python-3.3.0/python.exe
Python 3.3.0 (default, Jan 23 2013, 09:56:03)
[GCC 4.2.1 Compatible Apple Clang 3.0 (tags/Apple/clang-211.12)] on darwin
Type "help", "copyright", "credits" or "license" for more information.

...which makes lxml pretty unhappy.

However, when I install the binary Python 3.3 from python.org, it's 
built with GCC:

buzzkill:virtualenvs chris$ python3.3
Python 3.3.0 (v3.3.0:bd8afb90ebf2, Sep 29 2012, 01:25:11)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.

Why the difference?



Simplistix - Content Management, Batch Processing & Python Consulting
             - http://www.simplistix.co.uk

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