[MacPorts] #37686: hdf5-18: Upgrade to latest & bump dependents

[MacPorts]

#37686: hdf5-18: Upgrade to latest & bump dependents
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  Reporter:  eborisch@…  |      Owner:  eborisch@…
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.1.2
Resolution:              |   Keywords:  haspatch
      Port:  hdf5-18     |
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Comment (by takeshi@…):

 Thanks for preparing the update.

 Leopard and older systems don't have clang.
 I think you could use

 {{{
 compiler.blacklist llvm-gcc-4.2
 }}}

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Ticket URL: <https://trac.macports.org/ticket/37686#comment:2>
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