[MacPorts] #56043: libemos @2.4.2 cannot install the port

[MacPorts]

#56043: libemos @2.4.2 cannot install the port
-------------------------+----------------------
  Reporter:  david-pino  |      Owner:  tenomoto
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.4.2
Resolution:              |   Keywords:
      Port:  libemos     |
-------------------------+----------------------

Comment (by kencu):

 Those ports won't work until you reinstall some version of fftw-3, but
 nothing else bad would happen.

 Another way to accomplish the same thing is like this:
 {{{
 sudo port -v upgrade --force --enforce-variants fftw-3 +gcc7
 }}}
 and you shouldn't see that warning that way, as it's replaced immediately.

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Ticket URL: <https://trac.macports.org/ticket/56043#comment:5>
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