[MacPorts] #61975: codec2 @20210101-1f701514 fails to build using Xcode 12 due to implicitly declared library functions

[MacPorts]

#61975: codec2 @20210101-1f701514 fails to build using Xcode 12 due to implicitly
declared library functions
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  Reporter:  michaelld  |      Owner:  ra1nb0w
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  codec2     |
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Comment (by ra1nb0w):

 can you try https://github.com/ra1nb0w/codec2/tree/implicit ?

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Ticket URL: <https://trac.macports.org/ticket/61975#comment:3>
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