[MacPorts] #61883: Unable to install gcc6 in macOS Big Sur 11.1

[MacPorts]

#61883: Unable to install gcc6 in macOS Big Sur 11.1
-------------------------------------+--------------------
 Reporter:  YuncongMa                |      Owner:  (none)
     Type:  defect                   |     Status:  new
 Priority:  Normal                   |  Milestone:
Component:  ports                    |    Version:  2.6.4
 Keywords:  gcc6 macOS big sur 11.1  |       Port:
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 Hi! I successfully installed MacPorts 2.6.4 in my Mac Pro 2019 with macOS
 Big Sur 11.1. I got errors when I tried "sudo port install gcc6". The
 error messages are as follows:
 --->  Fetching archive for libgcc7
 Warning: Your DNS servers incorrectly claim to know the address of
 nonexistent hosts. This may cause checksum mismatches for some ports. See
 this page for more information:
 <https://trac.macports.org/wiki/MisbehavingServers>
 --->  Attempting to fetch libgcc7-7.5.0_0.darwin_20.x86_64.tbz2 from
 https://ywg.ca.packages.macports.org/mirror/macports/packages/libgcc7
 --->  Attempting to fetch libgcc7-7.5.0_0.darwin_20.x86_64.tbz2 from
 https://mse.uk.packages.macports.org/libgcc7
 --->  Attempting to fetch libgcc7-7.5.0_0.darwin_20.x86_64.tbz2 from
 https://lil.fr.packages.macports.org/libgcc7
 --->  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

-- 
Ticket URL: <https://trac.macports.org/ticket/61883>
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