[macports-ports] branch gcc12 created (now 5313b81421a)

[Chris Jones]

Chris Jones (cjones051073) pushed a change to branch gcc12
in repository macports-ports.

      at 5313b81421a gcc12: Support Darwin10 and newer. Use clang-14 for stdlib=libc++ support

This branch includes the following new commits:

     new 80f3bc05727 gcc-devel: check os.platform before os.major
     new 89e1d5809d8 gcc12: New major GCC release
     new 96d5751e3f7 gcc-devel: Always disable TLS
     new b7d2fb0b4b5 libgcc: Update to use GCC 12
     new 880b9560f18 gcc10: Update libgcc dependency
     new a2f74baca0c gcc11: Adapt to GCC12 being new primary runtime
     new 64c21b38aa5 Add GCC12 to known compilers lists
     new 5313b81421a gcc12: Support Darwin10 and newer. Use clang-14 for stdlib=libc++ support

The 8 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "add" were already present in the repository and have only
been added to this reference.