[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:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.3.3
Resolution:            |   Keywords:  elcapitan
      Port:  gcc48     |
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Comment (by stephen@…):

 Replying to [comment:60 murrayeisenberg@…]:

 > OK, just making the change of that one line of that one block of code in
 Availability.h, in a copy of Availability.h in /opt/local/include, seems
 to fix things for the nonce.

 This worked for me, too, in building gcc48.  I expect it will get me an R
 build without messing with variants, too.  Thanks for the hint!

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Ticket URL: <https://trac.macports.org/ticket/48471#comment:75>
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