[MacPorts] #65511: port install gmp fails on macOS Big Sur

[MacPorts]

#65511: port install gmp fails on macOS Big Sur
--------------------------------+--------------------
 Reporter:  JayReynoldsFreeman  |      Owner:  (none)
     Type:  defect              |     Status:  new
 Priority:  Normal              |  Milestone:
Component:  ports               |    Version:
 Keywords:  port install gmp    |       Port:
--------------------------------+--------------------
 I am running MacOS 11.6.5 (Big Sur) on a 2019 Mac Pro with Intel hardware.
 I have Xcode 13.2.1 installed, and have installed the associated command-
 line tools. I downloaded the MacPorts distribution for Big Sur and ran an
 apparently clean install via the installer. After some searching, I tried:
 "sudo port install gmp" and got the following:

 #### SNIP ####

 sudo port install gmp
 Password:
 --->  Cleaning gmp
 --->  Scanning binaries for linking errors
 --->  Found 12 broken files, matching files to ports
 Warning: No port llvm-3.0 found in the index; can't rebuild
 --->  Found 1 broken port, determining rebuild order
 You can always run 'port rev-upgrade' again to fix errors.
 The following ports will be rebuilt: gcc46 @4.6.3
 Continue? [Y/n]: Y
 --->  Fetching distfiles for gcc46
 Error: building gcc46 is not supported with Xcode 9 or greater
 Error: Failed to fetch gcc46: unsupported platform
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc46/gcc46/main.log
 for details.
 Error: rev-upgrade failed: Error rebuilding gcc46
 Error: Follow https://guide.macports.org/#project.tickets if you believe
 there is a bug.

 #### UNSNIP ####



 The log file cited gives a long trace of what happened, but the ultimate
 error is indeed

    :error:fetch building gcc46 is not supported with Xcode 9 or greater
    :error:fetch Failed to fetch gcc46: unsupported platform

 The advice in the first snipped output, to run "port rev-upgrade" isn't
 very useful:

 #### SNIP ####

 sudo port rev-upgrade
 Password:
 --->  Scanning binaries for linking errors
 --->  Found 12 broken files, matching files to ports
 Warning: No port llvm-3.0 found in the index; can't rebuild
 --->  Found 1 broken port, determining rebuild order
 You can always run 'port rev-upgrade' again to fix errors.
 The following ports will be rebuilt: gcc46 @4.6.3
 Continue? [Y/n]: Y
 --->  Fetching distfiles for gcc46
 Error: building gcc46 is not supported with Xcode 9 or greater
 Error: Failed to fetch gcc46: unsupported platform
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc46/gcc46/main.log
 for details.
 Error: rev-upgrade failed: Error rebuilding gcc46
 Error: Follow https://guide.macports.org/#project.tickets if you believe
 there is a bug.

 #### UNSNIP ####



 I learned a little more about what is actually installed:

 #### SNIP ####

 port installed gcc46
 The following ports are currently installed:
  gcc46 @4.6.3_3 (active)

 #### UNSNIP ####

 I posted on the GMP mailing list about this with no useful response so
 far.

-- 
Ticket URL: <https://trac.macports.org/ticket/65511>
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