[MacPorts] #58263: OpenBLAS fails for missing _cpuid_count

[MacPorts]

#58263: OpenBLAS fails for missing _cpuid_count
-----------------------+--------------------------
  Reporter:  rmottola  |      Owner:  NicosPavlov
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:  leopard i386
      Port:  OpenBLAS  |
-----------------------+--------------------------

Comment (by kencu):

 the automatic ARCH detection seems to be failing on Intel Leopard. I don't
 know why yet, but forcing it in the Portfile with:
 {{{
  puts $makeINC "ARCH=x86"
 }}}
 works:
 {{{
 $ port -v installed openblas
 The following ports are currently installed:
   OpenBLAS @0.3.5_1+gcc7+lapack (active) platform='darwin 9' archs='i386'
 date='2019-04-06T16:17:08-0700'
 }}}

 Needs a bit more cleaning up -- either figure out and fix the ARCH
 detection, or alternatively figure out and force it correctly in the
 Portfile.

-- 
Ticket URL: <https://trac.macports.org/ticket/58263#comment:8>
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