[MacPorts] #67590: openexr @3.1.8: build failures: 10.8 and earlier (unknown type name 'dispatch_semaphore_t'); ppc/gcc: ('isnan' was not declared in this scope)

[MacPorts]

#67590: openexr @3.1.8: build failures: 10.8 and earlier (unknown type name
'dispatch_semaphore_t'); ppc/gcc: ('isnan' was not declared in this scope)
-------------------------+-------------------------------------------------
  Reporter:              |      Owner:  mascguy
  barracuda156           |
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.8.1
Resolution:              |   Keywords:  powerpc, leopard, snowleopard,
      Port:  openexr     |  lion, mountainlion
-------------------------+-------------------------------------------------
Description changed by mascguy:

Old description:

> For Intel, 10.8 and earlier:
>
> {{{
> work/openexr-3.1.8/src/lib/IlmThread/IlmThreadSemaphore.h:64:13: error:
> unknown type name 'dispatch_semaphore_t'
> }}}
>
> For PPC, 10.5/10.6:
>
> {{{
> work/openexr-3.1.8/src/test/OpenEXRCoreTest/compression.cpp:162:10:
> error: 'isnan' was not declared in this scope; did you mean 'std::isnan'?
> }}}
>
> Also:
> https://github.com/AcademySoftwareFoundation/openexr/issues/1412#issuecomment-1581598674

New description:

 For Intel, 10.8 and earlier:

 {{{
 work/openexr-3.1.8/src/lib/IlmThread/IlmThreadSemaphore.h:64:13: error:
 unknown type name 'dispatch_semaphore_t'
 }}}

 For PPC, 10.5/10.6:

 {{{
 work/openexr-3.1.8/src/test/OpenEXRCoreTest/compression.cpp:162:10: error:
 'isnan' was not declared in this scope; did you mean 'std::isnan'?
 }}}

 Also See:
 *
 https://github.com/AcademySoftwareFoundation/openexr/issues/1412#issuecomment-1581598674

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Ticket URL: <https://trac.macports.org/ticket/67590#comment:2>
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