[MacPorts] #61547: texlive fails to compile on BigSur Apple Silicon

[MacPorts]

#61547: texlive fails to compile on BigSur Apple Silicon
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  Reporter:  Gregory-Gelfond      |      Owner:  (none)
      Type:  defect               |     Status:  new
  Priority:  Normal               |  Milestone:
 Component:  ports                |    Version:  2.6.4
Resolution:                       |   Keywords:  bigsur arm64
      Port:  texlive texlive-bin  |
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Comment (by michaelld):

 Interesting. I'm updating to the Xcode 12.2 release (have the beta still).
 It looks like there's a bug in <math.h> ... but, better practice by the
 TeXlive folks would be to use `isfinite` rather than `finite` since the
 former is what the current hip-and-trendy kids use while the latter is for
 backwards compatibility only / sort of deprecated but not yet removed.
 Need to check the TeXlive source to see if they have fixed this issue yet.

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Ticket URL: <https://trac.macports.org/ticket/61547#comment:1>
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