[MacPorts] #69464: gmp @6.3.0_0 configure error : configure: error: No usable m4 in $PATH or /usr/5bin

[MacPorts]

#69464: gmp @6.3.0_0 configure error : configure: error: No usable m4 in $PATH or
/usr/5bin
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  Reporter:  nanigashi-uji  |      Owner:  MarcusCalhoun-Lopez
      Type:  defect         |     Status:  assigned
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.9.1
Resolution:                 |   Keywords:
      Port:  gmp            |
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Comment (by ryandesign):

 I'd be very curious to learn where the "5" in /usr/5bin is coming from.
 Might want to attach the main.log file too.

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Ticket URL: <https://trac.macports.org/ticket/69464#comment:3>
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