[MacPorts] #69455: poppler @24.03.0: build failure on macOS 10.14 and earlier due to use of std::filesystem

[MacPorts]

#69455: poppler @24.03.0: build failure on macOS 10.14 and earlier due to use of
std::filesystem
-------------------------+-------------------------------------------------
  Reporter:  lukaso      |      Owner:  dbevans
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.8.1
Resolution:              |   Keywords:  tiger leopard snowleopard lion
                         |  mountainlion mavericks yosemite elcapitan
      Port:  poppler     |  sierra highsierra mojave
-------------------------+-------------------------------------------------

Comment (by jrandall814):

 OS 10.13.6, MacPorts 2.9.1

 poppler 24.3.0_0 fails to build for me as well, but I am unsure that the
 cause is the same one that's being treated in this ticket. The key passage
 in my log seems to be this one:

 :info:build
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_graphics_poppler/poppler/work/poppler-24.03.0/fofi/FoFiType1.cc:31:10:
 fatal error: 'charconv' file not found
 :info:build #include <charconv>

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Ticket URL: <https://trac.macports.org/ticket/69455#comment:16>
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