[MacPorts] #56511: gcc49 @4.9.4_2: build fails with Xcode 9 on macOS 10.12

[MacPorts]

#56511: gcc49 @4.9.4_2: build fails with Xcode 9 on macOS 10.12
-----------------------+--------------------
  Reporter:  mopihopi  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  gcc49     |
-----------------------+--------------------

Comment (by jmroot):

 For reference, the error in the log, which matched one of those mentioned
 in the upstream report, is:
 {{{
 :info:build In file included from
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc49/gcc49/work/gcc-4.9.4/gcc/c/c
 -objc-common.c:33:
 :info:build In file included from
 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/new:89:
 :info:build
 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/exception:173:5:
 error: no member named 'fancy_abort' in namespace 'std::__1'; did you mean
 simply 'fancy_abort'?
 :info:build     _VSTD::abort();
 :info:build     ^~~~~~~
 :info:build
 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/__config:392:15:
 note: expanded from macro '_VSTD'
 :info:build #define _VSTD std::_LIBCPP_NAMESPACE
 :info:build               ^
 :info:build
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc49/gcc49/work/gcc-4.9.4/gcc/system.h:685:13:
 note: 'fancy_abort' declared here
 :info:build extern void fancy_abort (const char *, int, const char *)
 ATTRIBUTE_NORETURN;
 :info:build             ^
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/56511#comment:11>
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