[MacPorts] #59496: dependency problem on Lion (probably related to gcc9?)

[MacPorts]

#59496: dependency problem on Lion (probably related to gcc9?)
-----------------------------+--------------------
  Reporter:  lemzwerg        |      Owner:  (none)
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:
Resolution:                  |   Keywords:  lion
      Port:  lilypond-devel  |
-----------------------------+--------------------

Comment (by kencu):

 Replying to [comment:7 lemzwerg]:
 > Will try that later today.  What exactly should I clean?
 well, everything, but certainly everything with currently actively failing
 builds (lilypong, clang-3.4, icu, whatever else).

 Every once in a while I go into
 {{{
 ${prefix}/var/macports/build
 }}}
 and look to see what failed build remnants remain in there, and clean them
 out either with `sudo port clean XYZ`, or if that doesn't work (it doesn't
 always, for various reasons i won't go into here), then just brute-force
 `sudo rm -rf the_very_long_folder_name`

-- 
Ticket URL: <https://trac.macports.org/ticket/59496#comment:8>
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