[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 very much for the explanations. They were very helpful for me.

 In particular for the information that broken ports are always checked
 after installation of specific ports, without that there has to be a
 relation to the installed ports.

 Following your suggestion I uninstalled the specific version of xfig that
 was mentioned in my output (xfig @3.2.9), together with the specific
 version of gcc7 at 7.5.0 of gcc that caused the problem on my MacOS.
 Afterwards I reinstalled xfig. That went well. I also cut leaves, and
 since about that time the error messages concerning libgcc7 have
 disappeared after port installations and "sudo port upgrade".

 I am very happy about that outcome, and for your help. I have learned a
 few important things more about the port system. In fact, I am very
 thankful for how quick and reliable it is possible to get help here.
 Usually there are years between tickets I open, but getting help quickly
 is my repeated very positive experience that I cherish. Thank you and the
 community here!

-- 
Ticket URL: <https://trac.macports.org/ticket/69875#comment:8>
MacPorts <https://www.macports.org/>
Ports system for macOS