[MacPorts] #40186: guide needs to be updated to reflect current compiler behavior

[MacPorts]

#40186: guide needs to be updated to reflect current compiler behavior
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  Reporter:  egall@…  |      Owner:  markd@…
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  guide    |    Version:  2.2.0
Resolution:           |   Keywords:
      Port:           |
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Comment (by egall@…):

 btw this is in section 5.3.7, Configure Phase Keywords:
 http://guide.macports.org/#reference.phases.configure

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Ticket URL: <https://trac.macports.org/ticket/40186#comment:1>
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