[MacPorts] #54798: webkit2-gtk +quartz build fails with many compiler errors

[MacPorts]

#54798: webkit2-gtk +quartz build fails with many compiler errors
--------------------------+-----------------
  Reporter:  Polyergic    |      Owner:
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  webkit2-gtk  |
--------------------------+-----------------

Comment (by kencu):

 Somewhat strange errors. I guess I'm in this based on the last PR to this,
 but I don't at this moment see that this has to do with the recent changes
 <https://github.com/macports/macports-ports/pull/686/files> we made in the
 webkit2-gtk-* ports to support building on older systems. None of that
 seems to be pulled in (as it shouldn't).

 {{{
 4216    :info:build
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_www_webkit2-gtk/webkit2-gtk/work/webkitgtk-2.14.2/Source/WTF/wtf/StdLibExtras.h:154:14:
 error: expected ';' at end of declaration
 4217    :info:build     ToType to{ };
 4218    :info:build              ^
 4219    :info:build              ;
 }}}

 and

 {{{
 4289    :info:build In file included from
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_www_webkit2-gtk/webkit2-gtk/work/webkitgtk-2.14.2/Source/WTF/wtf/Atomics.h:29:
 4290    :info:build
 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/atomic:543:2:
 error: <atomic> is not implemented
 4291    :info:build #error <atomic> is not implemented
 4292    :info:build  ^
 }}}
 I will try building it again on Sierra and see. Sincerely hope it's not my
 bad.

--
Ticket URL: <https://trac.macports.org/ticket/54798#comment:1>
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