[MacPorts] #65785: boost: install fails with +openmpi: bootstrap compilation fails for `b2` (was: boost176 @1.76.0_3 does not build with +openmpi)

[MacPorts]

#65785: boost: install fails with +openmpi: bootstrap compilation fails for `b2`
----------------------+-----------------------
  Reporter:  Epoxid2  |      Owner:  michaelld
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.7.2
Resolution:           |   Keywords:  monterey
      Port:  boost    |
----------------------+-----------------------
Changes (by mascguy):

 * keywords:   => monterey
 * port:  boost176 => boost
 * version:   => 2.7.2


Old description:

> Boost 176 does not build on Monterey 12.5.1 if the option +openmpi is
> chosen. Full log is attached

New description:

 The various Boost ports fail to install with `+openmpi`, on Monterey
 12.5.1.

 Appears to be an issue with bootstrap compilation of `b2`:

 {{{
 :info:configure Building B2 engine..
 1421    :info:configure > cpp -DNDEBUG builtins.cpp class.cpp command.cpp
 compile.cpp constants.cpp cwd.cpp debug.cpp debugger.cpp execcmd.cpp
 execnt.cpp execunix.cpp filesys.cpp filent.cpp fileunix.cpp frames.cpp
 function.cpp glob.cpp hash.cpp hcache.cpp hdrmacro.cpp headers.cpp
 jam_strings.cpp jam.cpp jamgram.cpp lists.cpp make.cpp make1.cpp md5.cpp
 mem.cpp modules.cpp native.cpp object.cpp option.cpp output.cpp parse.cpp
 pathnt.cpp pathsys.cpp pathunix.cpp regexp.cpp rules.cpp scan.cpp
 search.cpp startup.cpp subst.cpp sysinfo.cpp timestamp.cpp variable.cpp
 w32_getreg.cpp modules/order.cpp modules/path.cpp modules/property-set.cpp
 modules/regex.cpp modules/sequence.cpp modules/set.cpp -o b2
 1422    :info:configure cpp: fatal error: too many input files
 1423    :info:configure compilation terminated.
 1424    :info:configure > cp b2 bjam
 1425    :info:configure cp: b2: No such file or directory
 1426    :info:configure Failed to build B2 build engine
 }}}

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Ticket URL: <https://trac.macports.org/ticket/65785#comment:2>
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