[MacPorts] #66745: smlnj uses clang and inconsistent flags in Rosetta, fails to build

[MacPorts]

#66745: smlnj uses clang and inconsistent flags in Rosetta, fails to build
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  Reporter:  barracuda156  |      Owner:  tobypeterson
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.8.0
Resolution:                |   Keywords:  powerpc, leopard, snowleopard
      Port:  smlnj         |
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Comment (by tobypeterson):

 I can build on Apple silicon now, though that doesn't help with this issue
 at all, it means I can at least attempt speculative fixes to the build
 system.

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Ticket URL: <https://trac.macports.org/ticket/66745#comment:4>
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