[MacPorts] #53910: xorg-server @1.18.4: repetitive crash. Can't kill it. Have to log out to stop it

[MacPorts]

#53910: xorg-server @1.18.4: repetitive crash.  Can't kill it. Have to log out to
stop it
--------------------------+----------------------
  Reporter:  bdbaddog     |      Owner:  jeremyhu
      Type:  defect       |     Status:  closed
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:  fixed        |   Keywords:
      Port:  xorg-server  |
--------------------------+----------------------

Comment (by michaellass):

 After the fix in 1c09549 macports tries to build using macports-clang-3.7
 which leads to dozens of errors like the following:

 {{{
 In file included from X11Application.m:31:
 In file included from ./sanitizedCarbon.h:21:
 In file included from
 /System/Library/Frameworks/Carbon.framework/Headers/Carbon.h:29:
 In file included from
 /System/Library/Frameworks/Carbon.framework/Frameworks/HIToolbox.framework/Headers/HIToolbox.h:240:
 In file included from
 /System/Library/Frameworks/Carbon.framework/Frameworks/HIToolbox.framework/Headers/IMKInputSession.h:23:
 In file included from
 /System/Library/Frameworks/Foundation.framework/Headers/Foundation.h:10:
 In file included from
 /System/Library/Frameworks/Foundation.framework/Headers/NSArray.h:5:
 /System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:44:12:
 error: unknown property attribute 'class'
 @property (class, readonly) BOOL supportsSecureCoding;
            ^
 }}}

 Blacklisting macports-clang-3.7 as well leads to the following message:

 {{{
 Warning: All compilers are either blacklisted or unavailable; defaulting
 to first fallback option
 }}}

 Was anyone able to compile this on MacOS Sierra? If so, with what
 compiler?

--
Ticket URL: <https://trac.macports.org/ticket/53910#comment:10>
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