[MacPorts] #48471: FSF gcc48 fails to compile projects on El Capitan due to OS X SDK bug in Availability.h

[MacPorts]

#48471: FSF gcc48 fails to compile projects on El Capitan due to OS X SDK bug in
Availability.h
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  Reporter:  jasonw@…  |      Owner:  mww@…
      Type:  defect    |     Status:  reopened
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.3.3
Resolution:            |   Keywords:  elcapitan haspatch
      Port:  gcc48     |
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Comment (by jeremyhu@…):

 Look at
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/include/Availability.h
 ... the fix should be there in Xcode 7.3 beta.

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Ticket URL: <https://trac.macports.org/ticket/48471#comment:102>
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