[MacPorts] #62954: snappy: @1.1.9: builds fail on macOS 10.13

[MacPorts]

#62954: snappy: @1.1.9: builds fail on macOS 10.13
----------------------+------------------------
  Reporter:  mascguy  |      Owner:  reneeotten
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  snappy   |
----------------------+------------------------
Description changed by mascguy:

Old description:

> The following build errors are occurring on 10.13, with the 1.1.9 port
> update:
>
> https://github.com/macports/macports-
> ports/commit/14620b1c10dc90e0cb3edc699b5f45feed422569
>
> {{{
> :info:build
> /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_snappy/snappy/work/snappy-1.1.9/snappy.cc:1033:36:
> error: invalid output constraint '=@ccz' in asm
> :info:build       : [tag_type] "+r"(tag_type), "=@ccz"(is_literal));
> :info:build                                    ^
> :info:build 1 error generated.
> :info:build make[2]: *** [CMakeFiles/snappy.dir/snappy.cc.o] Error 1
> }}}
>
> Full log attached; filename: snappy-1.1.9-build-error-10.13.txt.gz

New description:

 The following build errors are occurring on 10.13, with the 1.1.9 port
 update:

 https://github.com/macports/macports-
 ports/commit/14620b1c10dc90e0cb3edc699b5f45feed422569

 {{{
 .../work/snappy-1.1.9/snappy.cc:1033:36: error: invalid output constraint
 '=@ccz' in asm
       : [tag_type] "+r"(tag_type), "=@ccz"(is_literal));
                                    ^
 1 error generated.
 make[2]: *** [CMakeFiles/snappy.dir/snappy.cc.o] Error 1
 }}}

 Full log attached; filename: snappy-1.1.9-build-error-10.13.txt.gz

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Ticket URL: <https://trac.macports.org/ticket/62954#comment:1>
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