Default +universal variant for configure-based ports

[Blair Zajac]

Ryan Schmidt wrote:
> On Feb 26, 2007, at 02:57, Paul Guyot wrote:
> 
>> You are right. This will not work on 10.3 simply because 10.3 
>> installations are not capable of building universal binaries. I have 
>> just added a warning (we could transform it into an error) when the 
>> +universal variant is selected on machines where the Universal SDK is 
>> not installed. This will cover machines running 10.3 and incomplete 
>> 10.4 installs.
> 
> What is the difference between a warning and an error? Are you saying it 
> just prints a message, then tries to continue? How could it succeed if 
> the universal SDK is not present?
> 
>> I realize that this code should be modified when Leopard will be out, 
>> for example, we should not specify 10.4 universal SDK on Leopard if 
>> all the libraries there are universal. But I can only speculate for now.
> 
> I do not believe that any such changes would need to be made when 
> Leopard is out. Leopard should be able to run 10.4 universal binaries. 
> And we should continue to make 10.4 universal binaries even when on 
> Leopard, so that any universal binaries that were made there will still 
> run on 10.4. Are we setting MACOSX_DEPLOYMENT_TARGET=10.4? If not, we 
> should be.
> 
>> I am not aware of your exact needs, but please note that MacPorts does 
>> not produce 10.3.9 PPC + 10.4 Intel universal binaries.
> 
> And I don't think we should try to support 10.3.9 PPC + 10.4 Intel 
> universal binaries; it's too much of a pain. Unless we were to include a 
> trick like the unify script from the mozilla project in the macports 
> infrastructure somewhere. But even then, many software packages throw 
> considerably more fits when being cross-compiled than when they are 
> being universally compiled. (glib2: I'm lookin' at you...)

Agreed.  This is not something I'm looking for support from the MacPorts 
community.

But now that you mention this unify script from Mozilla, I'll check that 
out for myself :)

Regards,
Blair

-- 
Blair Zajac, Ph.D.
CTO, OrcaWare Technologies
<blair at orcaware.com>
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