In article <[EMAIL PROTECTED]>,
 David Warde-Farley <[EMAIL PROTECTED]> wrote:

> Hi again,
> 
> I'm trying to build a universal libpng package at the moment  for use  
> with matplotlib from pythonmac.org/packages. There's an older version  
> up on undefined.org that's referred to in some mailing list postings  
> but there've been some major security holes fixed since then, so I've  
> been trying to automate the process of building a
> 
> gcc complains about the '-M' flag being used with multiple -arch  
> flags, and so I've compiled twice and am stitching them together with  
> lipo. One thing I'm not sure about is the "libpng12.la" file, which I  
> can't seem to combine. I've never been totally clear on the difference  
> between .a and .la archives, but there does seem to be one.
> 
> Any hints? I will of course post the build script and an URL for the  
> package once I'm sure it works.

See 
<http://www.astro.washington.edu/rowen/BuildingMatplotlibForMac.html> 
which has explicit instructions and a reference to Apple Tech Note 
TN2137 <http://developer.apple.com/technotes/tn2005/tn2137.html>

-- Russell

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