[MacPorts] #64260: icu fails to configure for ppc64

[MacPorts]

#64260: icu fails to configure for ppc64
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  Reporter:  barracuda156  |      Owner:  (none)
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.1
Resolution:                |   Keywords:  PowerPC, Leopard, ppc64
      Port:  icu           |
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Comment (by barracuda156):

 Replying to [comment:3 ryandesign]:
 > Could you attach the conftest crash log?

 I didn't find that log now, but it looks like it's a compiler problem (see
 below).

 Did I screw up gcc7 compilation somehow? I think I tried to make
 libquadmath build and used custom patches for that. I can build vanilla
 gcc6 and test if it can produce ppc64 binaries that actually work.

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Ticket URL: <https://trac.macports.org/ticket/64260#comment:6>
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