[MacPorts] #57912: OpenBLAS compilation fails on iMac Pro MacOS 10.13

[MacPorts]

#57912: OpenBLAS compilation fails on iMac Pro MacOS 10.13
-------------------------+-------------------------
  Reporter:  EJFielding  |      Owner:  NicosPavlov
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.5.4
Resolution:              |   Keywords:
      Port:  OpenBLAS    |
-------------------------+-------------------------

Comment (by datajerk):

 {{{
 $ sysctl -A | grep -i avx
 hw.optional.avx1_0: 1
 hw.optional.avx2_0: 1
 hw.optional.avx512f: 1
 hw.optional.avx512cd: 1
 hw.optional.avx512dq: 1
 hw.optional.avx512bw: 1
 hw.optional.avx512vl: 1
 hw.optional.avx512ifma: 0
 hw.optional.avx512vbmi: 0
 }}}

 some AVX512 features available, but not all of them.

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Ticket URL: <https://trac.macports.org/ticket/57912#comment:5>
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