[MacPorts] #54067: upc @5.2.0.1: error: unknown type name 'isl_constraint'

[MacPorts]

#54067: upc @5.2.0.1: error: unknown type name 'isl_constraint'
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  Reporter:  caverac  |      Owner:  tenomoto
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  upc      |
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Comment (by kencu):

 Yeah - nope. That fails too, sorry to say. But we're on the right path.

 Most likely, the upc build is searching for and finding the isl headers in
 /opt/local/include and so it never looks for and finds the isl14 headers
 in /opt/local/libexec/isl14/include, and so it's including the wrong isl
 headers.

 So, not as easy. have to do something more to fix that. A good place to
 check is the gcc48 Portfile, where this has been fixed already.

 Perhaps -include the isl14 headers before the usual headers with something
 like configure.args-preappend (if I recall correctly)...

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Ticket URL: <https://trac.macports.org/ticket/54067#comment:8>
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