[MacPorts] #64986: OpenBLAS fails on 10.6.8 Rosetta: error: unrecognized command-line option '-march=native'

[MacPorts]

#64986: OpenBLAS fails on 10.6.8 Rosetta: error: unrecognized command-line option
'-march=native'
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  Reporter:  barracuda156  |      Owner:  NicosPavlov
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.2
Resolution:                |   Keywords:  powerpc, snowleopard, rosetta
      Port:  OpenBLAS      |
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Comment (by barracuda156):

 Replying to [comment:3 kencu]:
 > does this actually work in rosetta, or just 10.6-for-PPC? I thought it
 would have to be configure.build_arch to work in rosetta.

 On 10.6 PPC this is not needed, `openblas` builds fine there.

 At the moment I only have access to 10.6.8 Rosetta, so fixing ports for
 it. (I am out of Taiwan, and only got Intel MBP with me.)

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Ticket URL: <https://trac.macports.org/ticket/64986#comment:5>
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