[MacPorts] #56292: fix ccpnmr package so that it actually builds again

[MacPorts]

#56292: fix ccpnmr package so that it actually builds again
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  Reporter:  jwhowarth    |      Owner:  (none)
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:  haspatch maintainer
      Port:  ccpnmr       |
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Comment (by ryandesign):

 Replying to [ticket:56292 jwhowarth]:
 > The ccpnmr package has been broken for almost a year now and every
 attempt to fix it has failed.

 Which attempts to fix it are you referring to? The last commit to the port
 that fixed anything was r144223 over 2 years ago.

 > The attached Portfile diff and revised patch eliminates these build
 failures by blacklisting the cc, clang and all clang-macports compilers
 without working -fopenmp support.

 I see you've blacklisted all versions of clang provided by Xcode. Are you
 certain that none of them support `-fopenmp`?

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Ticket URL: <https://trac.macports.org/ticket/56292#comment:4>
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