[MacPorts] #59389: Failed to build libgcc7 in Catalina

[MacPorts]

#59389: Failed to build libgcc7 in Catalina
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 Reporter:  mengqiz  |      Owner:  (none)
     Type:  defect   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:
 Keywords:           |       Port:
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 Hi, I got the following issue when upgrading gcc7

 Error: Failed to build libgcc7: command execution failed

 Error: rev-upgrade failed: Error rebuilding gcc7

 Please help. Thanks. There seems to be many problems in Catalina

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Ticket URL: <https://trac.macports.org/ticket/59389>
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