[MacPorts] #62181: libgcc10 fails to build on Big Sur

[MacPorts]

#62181: libgcc10 fails to build on Big Sur
-------------------------+--------------------------
  Reporter:  jserio1869  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.6.4
Resolution:              |   Keywords:  bigsur arm64
      Port:  libgcc10    |
-------------------------+--------------------------
Changes (by jmroot):

 * keywords:  Big Sur => bigsur arm64


Old description:

> Attempting to install gcc5, which has libgcc10 as a dependency. I get to
> this point in the main.log, where it issues a libgcc10 incompatible
> error.
>
> I listed this as a ticket because I did not see any specific libgcc10
> build error tickets, although I did see the general gcc build tickets.
> Thanks.
>

> :notice:fetch --->  Fetching distfiles for libgcc10
> :debug:fetch Executing proc-pre-org.macports.fetch-fetch-0
> :error:fetch gcc10 10.2.0 is not supported on Darwin 20 arm
> :error:fetch Failed to fetch libgcc10: incompatible OS X version
> :debug:fetch Error code: NONE
> :debug:fetch Backtrace: incompatible OS X version
> :debug:fetch     while executing
> :debug:fetch "$pre $targetname"
> :error:fetch See
> /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc10/libgcc10/main.log
> for details.

New description:

 Attempting to install gcc5, which has libgcc10 as a dependency. I get to
 this point in the main.log, where it issues a libgcc10 incompatible error.

 I listed this as a ticket because I did not see any specific libgcc10
 build error tickets, although I did see the general gcc build tickets.
 Thanks.

 {{{
 :notice:fetch --->  Fetching distfiles for libgcc10
 :debug:fetch Executing proc-pre-org.macports.fetch-fetch-0
 :error:fetch gcc10 10.2.0 is not supported on Darwin 20 arm
 :error:fetch Failed to fetch libgcc10: incompatible OS X version
 :debug:fetch Error code: NONE
 :debug:fetch Backtrace: incompatible OS X version
 :debug:fetch     while executing
 :debug:fetch "$pre $targetname"
 :error:fetch See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc10/libgcc10/main.log
 for details.
 }}}

--

Comment:

 The message is completely correct, gcc 10 does not support macOS on ARM.
 Support is due to be added in gcc 11, for which a development snapshot is
 available in the gcc-devel port.

-- 
Ticket URL: <https://trac.macports.org/ticket/62181#comment:1>
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