[MacPorts] #42872: cmake PortGroup: don't add -I${prefix}/include to CXXFLAGS

[MacPorts]

#42872: cmake PortGroup: don't add -I${prefix}/include to CXXFLAGS
----------------------+--------------------------------
  Reporter:  mojca@…  |      Owner:  macports-tickets@…
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  clhep    |
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Comment (by mojca@…):

 Another victim requiring
 {{{
 configure.cppflags-delete -I${prefix}/include
 }}}
 seems to be wxLua.

 Maybe we can continue passing other `cppflags` to `cxxflags`, but it seems
 that `-I${prefix}/include` really needs to go.

-- 
Ticket URL: <https://trac.macports.org/ticket/42872#comment:13>
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