[MacPorts] #59620: zstd does need a newer compiler than stock 10.5 supplied

[MacPorts]

#59620: zstd does need a newer compiler than stock 10.5 supplied
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  Reporter:  rmottola  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:  leopard
      Port:  zstd      |
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Comment (by jmroot):

 {{{
 :info:build cc1: error: unrecognized command line option "-std=c90"
 }}}
 That's an alias for c89 (ANSI adopted the standard in 1989 while ISO
 adopted it in 1990), should be fine to just patch it to use that instead.

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Ticket URL: <https://trac.macports.org/ticket/59620#comment:2>
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