[MacPorts] #67811: wesnoth build fails with gcc: error: 'quick_exit' is not a member of 'std'

[MacPorts]

#67811: wesnoth build fails with gcc: error: 'quick_exit' is not a member of 'std'
--------------------------+------------------------
 Reporter:  barracuda156  |      Owner:  ryandesign
     Type:  defect        |     Status:  assigned
 Priority:  Low           |  Milestone:
Component:  ports         |    Version:  2.8.1
 Keywords:                |       Port:  wesnoth
--------------------------+------------------------
 {{{
 :info:build
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_games_wesnoth/wesnoth/work/wesnoth-1.16.9/src/serialization/schema/type.cpp:38:36:
 error: 'monostate' in namespace 'std' does not name a type
 :info:build    38 |         bool operator()(const std::monostate&) const
 :info:build       |                                    ^~~~~~~~~

 :info:build
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_games_wesnoth/wesnoth/work/wesnoth-1.16.9/src/gui/dialogs/loading_screen.cpp:185:22:
 error: 'quick_exit' is not a member of 'std'
 :info:build   185 |                 std::quick_exit(0);
 :info:build       |                      ^~~~~~~~~~
 }}}

 After the first error the build proceeds further, failing only after the
 second, much later.

 P. S. I had to use Boost 1.81 due to a need for coroutine, but apparently
 the error is not due to Boost version.

-- 
Ticket URL: <https://trac.macports.org/ticket/67811>
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