[MacPorts] #62173: GMP do not compile under BigSur with Inel computer for ARM64 target

[MacPorts]

#62173: GMP do not compile under BigSur with Inel computer for ARM64 target
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  Reporter:  cgilles  |      Owner:  (none)
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.6.4
Resolution:           |   Keywords:
      Port:  gmp      |
----------------------+--------------------

Comment (by kencu):

 It is likely going to be much easier to build this +universal on an Apple
 Silicon machine, which can run both archs (via Rosetta2). (same with cmake
 +universal, and any others that need to run things during the build).

 If we could get that built and on the buildbot, everyone could download
 it.

 I don't know if we can build it +universal on an Intel system, but I'll
 take a look this weekend.

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Ticket URL: <https://trac.macports.org/ticket/62173#comment:7>
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