[MacPorts] #63251: GILDAS build fail on Big Sur / arm64

[MacPorts]

#63251: GILDAS build fail on Big Sur / arm64
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 Reporter:  rampante  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:
 Keywords:            |       Port:
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 I've been trying to install gildas on macOS Big Sur 11.4 (Xcode version
 12.5, M1 chip) without success:
 - at first I got a "ld: framework not found CoreFoundation" error.
 Following [https://trac.macports.org/ticket/59347 this ticket], I
 reinstalled gcc11 and python38 from source
 - now, on the other hand, this warning appears:
 {{{
 -->  Found 3 broken files, matching files to ports
 --->  Found 1 broken port, determining rebuild order
 You can always run 'port rev-upgrade' again to fix errors.
 The following ports will be rebuilt: gildas @202107a+gcc11
 }}}
 and, after a few of attempts, the build is still broken. Running port -d
 -y rev-upgrade yields the following output.

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Ticket URL: <https://trac.macports.org/ticket/63251>
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