[MacPorts] #63402: ccache @ 4.4_0 error: static_assert failed "unique_ptr constructed with null function pointer deleter"

[MacPorts]

#63402: ccache @ 4.4_0 error: static_assert failed "unique_ptr constructed with
null function pointer deleter"
-----------------------+---------------------------------
  Reporter:  thetrial  |      Owner:  ryandesign
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.7.1
Resolution:            |   Keywords:  elcapitan legacy-os
      Port:  ccache    |
-----------------------+---------------------------------

Comment (by thetrial):

 Okay. So what is the quintessence of that? Is this something that should
 be fixed in the port/portfile, is this a rare case one has to use
 {{{configure.compiler=macports-clang-9.0}}} or shall something be
 generally set in MP?

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Ticket URL: <https://trac.macports.org/ticket/63402#comment:8>
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