[MacPorts] #12794: MacPorts should warn of old Xcode versions

[MacPorts]

#12794: MacPorts should warn of old Xcode versions
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  Reporter:  ryandesign at macports.org  |       Owner:  macports-dev at lists.macosforge.org
      Type:  defect                   |      Status:  new                              
  Priority:  Normal                   |   Milestone:  MacPorts base enhancements       
 Component:  base                     |     Version:  1.5.2                            
Resolution:                           |    Keywords:                                   
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Comment (by ryandesign at macports.org):

 We don't need an always up-to-date knowledge of dev tool releases; we just
 need to make sure we warn about known-bad versions. Xcode 2.4.1, for
 example, worked great, while Xcode 2.2 caused a lot of problems. So long
 as a warning is issued when Xcode 2.2 is present, I'm happy.

 If in the future we get lots of bug reports about, say, Xcode 3 on
 Leopard, and Xcode 3.0.1 is released to fix the problems, we can then
 insert new checks and release a new version of MacPorts.

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Ticket URL: <https://trac.macosforge.org/projects/macports/ticket/12794#comment:5>
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