[MacPorts] #57994: OpenBLAS compilation fails on iMac Pro MacOS 10.14

[MacPorts]

#57994: OpenBLAS compilation fails on iMac Pro MacOS 10.14
---------------------------------+--------------------
 Reporter:  Tim-at-AST           |      Owner:  (none)
     Type:  defect               |     Status:  new
 Priority:  Normal               |  Milestone:
Component:  ports                |    Version:  2.5.4
 Keywords:  OpenBlas,OS X 10.14  |       Port:
---------------------------------+--------------------
 This may be a duplicate of Ticket #57912 (ticket)  but that seems to have
 been resolved for the user (ticket:57912#comment:30), so iI don't know for
 sure.

 I am trying to install py37-scipy which has OpenBlas as a dependency, and
 this latter install fails.


 {{{
  Warning: the chosen compiler cannot handle advanced optimisation
 instructions.
          AVX instructions are disabled.
 Error: Failed to build OpenBLAS: command execution failed
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_math_OpenBLAS/OpenBLAS/main.log
 for details.
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 Error: Processing of port openblas failed
 }}}

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Ticket URL: <https://trac.macports.org/ticket/57994>
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