[MacPorts] #23210: mesa fails to build due to external headers

[MacPorts]

#23210: mesa fails to build due to external headers
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  Reporter:  probono@…               |       Owner:  macports-tickets@…                   
      Type:  defect                  |      Status:  closed                               
  Priority:  Normal                  |   Milestone:                                       
 Component:  ports                   |     Version:  1.8.2                                
Resolution:  worksforme              |    Keywords:  puredarwin                           
      Port:  mesa                    |  
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Comment(by probono@…):

 Thanks jeremyhu, with -hw_render it works.

 Is it possible to add a "puredarwin" variant that sets -hw_render
 automatically? (Unfortunately I couldn't figure out from the docs how to
 achieve this.)

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Ticket URL: <http://trac.macports.org/ticket/23210#comment:2>
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