[MacPorts] #55603: gmp @6.1.2: port install stuck on configure

[MacPorts]

#55603: gmp @6.1.2: port install stuck on configure
---------------------+---------------------------------
  Reporter:  roncli  |      Owner:  MarcusCalhoun-Lopez
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  gmp     |
---------------------+---------------------------------

Comment (by roncli):

 Google comes up empty for the search: "ivybridge-apple-darwin17.3.0" gmp,
 just something for gcc46 on homebrew that doesn't even look related to the
 system type.

 Attached is the GZIP'd config.log from the command line:
 {{{
 cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_gmp/gmp/work/gmp-6.1.2"
 && sudo ./configure --prefix=/opt/local --enable-cxx
 }}}

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Ticket URL: <https://trac.macports.org/ticket/55603#comment:6>
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