[MacPorts] #35045: Don't warn about missing XCode when only Command Line Tools For XCode are installed

[MacPorts]

#35045: Don't warn about missing XCode when only Command Line Tools For XCode are
installed
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  Reporter:  schwern@…          |       Owner:  macports-tickets@…                   
      Type:  enhancement        |      Status:  reopened                             
  Priority:  Low                |   Milestone:                                       
 Component:  base               |     Version:  2.1.1                                
Resolution:                     |    Keywords:                                       
      Port:                     |  
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Comment(by cal@…):

 There is a a simple way to find out whether a port needs Xcode: Try to
 build them all without, try to build all those that failed with Xcode. The
 set of ports that fail without Xcode and install successfully with Xcode
 is the set that would have to be marked requiring Xcode. Or, you could
 just solve the halting problem, either way is fine with me.

 MacPorts also uses the Xcode version to select different compilers and a
 number of Portfiles have conditionals depending on Xcode version. While I
 can see why people would like to see the Xcode dependency dropped, I still
 don't think the effort is worthwhile.

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Ticket URL: <https://trac.macports.org/ticket/35045#comment:7>
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