[MacPorts] #64826: xar @1.8.0.482: fatal error: 'os/availability.h' file not found

[MacPorts]

#64826: xar @1.8.0.482: fatal error: 'os/availability.h' file not found
-------------------------------------------------+-------------------------
 Reporter:  ryandesign                           |      Owner:  Schamschula
     Type:  defect                               |     Status:  assigned
 Priority:  Normal                               |  Milestone:
Component:  ports                                |    Version:  2.7.2
 Keywords:  tiger leopard snowleopard lion       |       Port:  xar
  mountainlion mavericks yosemite elcapitan      |
-------------------------------------------------+-------------------------
 xar @1.8.0.482 fails to build on OS X El Capitan and earlier:

 https://build.macports.org/builders/ports-10.11_x86_64-builder/builds/175772/steps
 /install-port/logs/stdio

 {{{
 include/xar.h:52:9: fatal error: 'os/availability.h' file not found
 #import <os/availability.h>
         ^
 }}}

 The previous port version, xar @1.8.0.452, didn't have this problem.

 This blocks the MacOSX.sdk subports from working.

-- 
Ticket URL: <https://trac.macports.org/ticket/64826>
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