[MacPorts] #69875: libgcc7 build failed (MacOS Big Sur)

[MacPorts]

#69875: libgcc7 build failed (MacOS Big Sur)
----------------------+--------------------
  Reporter:  clegra   |      Owner:  (none)
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.9.3
Resolution:           |   Keywords:
      Port:  libgcc7  |
----------------------+--------------------

Comment (by clegra):

 Thank you for your help, and i.p. for the info that subversion does not
 depend on libgcc.

 I recognized, however, that emacs (which I need) depends on:
   gcc7 @7.5.0
 (seemingly via gcc10) and the (re-)installation of emacs then fails on
 this part.

 I uninstalled libgcc7, and then cut leaves, which eliminated also libgcc8
 and libgcc9 with no further leaves. But then "port upgrade outdated"
 recreated libgcc9 (with much efforts) with the dependency again on libgcc8
 and libgcc7, which again failed.

 I am aware of #61883 (and recognized that I had asked the same question
 there 3 years ago before), but even pdftk-java that is suggested there
 instead of pdftk depends on libgcc9 whose build then depends on libgcc7
 and fails.

 Would there be a specific emacs version for me on MacOS 11.7.10 that would
 not have this indirect dependency on libgcc7?

 -- Many thanks for any indication in advance!

-- 
Ticket URL: <https://trac.macports.org/ticket/69875#comment:3>
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