[MacPorts] #52002: lilypond build fails due to missing reference to libc++ on some Darwin systems - fix attached

[MacPorts]

#52002: lilypond build fails due to missing reference to libc++ on some Darwin
systems - fix attached
-------------------------------------+-------------------
  Reporter:  kenneth.f.cunningham@…  |      Owner:  snc@…
      Type:  defect                  |     Status:  new
  Priority:  Normal                  |  Milestone:
 Component:  ports                   |    Version:  2.3.4
Resolution:                          |   Keywords:
      Port:  lilypond                |
-------------------------------------+-------------------
Changes (by larryv@…):

 * owner:  macports-tickets@… => snc@…
 * cc: snc@… (removed)


Comment:

 The check seems overzealous. Why bother with version? Just add the flag
 always.
 {{{
 platform darwin {
     if {${configure.cxx_stdlib} eq "libc++"} {
         configure.ldflags-append    "-lc++"
     }
 }
 }}}

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Ticket URL: <https://trac.macports.org/ticket/52002#comment:1>
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