Universal ports: mozilla's unify script

Kevin Ballard eridius at macports.org
Fri Mar 9 18:15:43 PST 2007

I don't know the license of the script, but it is useful. The only  
thing to be careful of is if building ppc vs i386 produces differing  
outputs aside from executables/libraries - if unify finds a file  
differs in the two trees, and it's not an executable/library, it  
ditches it entirely (since it doesn't know which input file to  
preserve in the output, and it can't lipo them together). This tends  
to be the case of a header file which is, say, processed with ./ 
configure and differs based on the flags used for ppc/i386 building.  
Not a common occurrence, but entirely within the realm of possibility.


On Mar 6, 2007, at 1:56 AM, Ryan Schmidt wrote:

> If we're serious about universal binaries, the mozilla project's  
> unify script is useful. Install once for ppc to a given path,  
> install a second time for i386 to a different path, then call  
> unify, telling it where your ppc and i386 builds are, and it  
> combines them into a new third tree, using lipo on any files as  
> needed.
> If you can build without using lipo, great, but if you need lipo,  
> then unify is a time saver, not having to engineer all that logic  
> again of figuring out what needs to be lipo'd.
> Now it's just a question of licensing, and I'm no expert in that.  
> Is it possible to take the unify script from mozilla and  
> incorporate it nicely into MacPorts? Are our respective licenses  
> compatible for that kind of inclusion?

Kevin Ballard
eridius at macports.org

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