[MacPorts] #59992: ncurses at 6.1 : /opt/local/include/unctrl.h:60:63: error: unknown type name 'SCREEN'

[MacPorts]

#59992: ncurses at 6.1 : /opt/local/include/unctrl.h:60:63: error: unknown type name
'SCREEN'
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  Reporter:  kencu    |      Owner:  jmroot
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  ncurses  |
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Comment (by kencu):

 essentially, when clang is using modules, but a CPATH is set, instead of
 honouring the CPATH it first looks at the cached module map which sends it
 into the SDK, but then does honour the CPATH for further includes.

 This situation is non-viable. Disabling modules of course works. disabling
 CPATH disables MacPorts, basically.

 Some clang trickery to regenerate the module map automatically if CPATH is
 set would appear to be needed.

 This can't be the only time this is noticed, but MacPorts is likely the
 first place this would show up, running a current clang with non-standard
 geader include paths and setting CPATH.

-- 
Ticket URL: <https://trac.macports.org/ticket/59992#comment:23>
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