[MacPorts] #59351: Cannot compile gfortran (or even libgcc7) under Catalina

[MacPorts]

#59351: Cannot compile gfortran (or even libgcc7) under Catalina
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 Reporter:  thepeteriley  |      Owner:  (none)
     Type:  defect        |     Status:  new
 Priority:  High          |  Milestone:
Component:  ports         |    Version:
 Keywords:                |       Port:
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 Following the instructions, including a clean install of Catalina and a
 clean install of Macports, after getting a first round of errors, then
 forcibly deactivating libunwind-headers, the installation of gfortran
 continued until:

 --->  Building libgcc7
 Error: Failed to build libgcc7: command execution failed
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc7/libgcc7/main.log
 for details.
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 Error: Processing of port gcc6 failed

 I'm happy to send a full log if needed, but I don't want to bog this
 message down with it unless it's necessary.

 Thanks!

-- 
Ticket URL: <https://trac.macports.org/ticket/59351>
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