[MacPorts] #68961: groff: update to 1.23.0 has broken the build with gcc 4.2:

[MacPorts]

#68961: groff: update to 1.23.0 has broken the build with gcc 4.2:
-------------------------+-------------------------------------------------
  Reporter:              |      Owner:  Schamschula
  barracuda156           |
      Type:  defect      |     Status:  closed
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.8.1
Resolution:  fixed       |   Keywords:  tiger, leopard, snowleopard,
      Port:  groff       |  powerpc
-------------------------+-------------------------------------------------

Comment (by ryandesign):

 Replying to [comment:2 barracuda156]:
 > (I have no idea if clangs define a version of `__GNUC__` and if yes then
 which.)

 In terms of which GNUC macros it exports, clang has always pretended to be
 gcc 4.2.1

 {{{
 % clang -dM -E - < /dev/null | grep GNU
 #define __GNUC_MINOR__ 2
 #define __GNUC_PATCHLEVEL__ 1
 #define __GNUC_STDC_INLINE__ 1
 #define __GNUC__ 4
 }}}

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Ticket URL: <https://trac.macports.org/ticket/68961#comment:4>
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