[MacPorts] #68428: ilmbase fails to compile on 10.5 / missing dispatch.h

[MacPorts]

#68428: ilmbase fails to compile on 10.5 / missing dispatch.h
----------------------+---------------------
 Reporter:  rmottola  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:
 Keywords:  leopard   |       Port:  ilmbase
----------------------+---------------------
 10.5 i386


 {{{
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_openexr2/ilmbase/work/openexr-2.5.8/IlmBase/IlmThread/IlmThreadSemaphore.h:60:13:
 fatal error: 'dispatch/dispatch.h' file not found
 #   include <dispatch/dispatch.h>
             ^~~~~~~~~~~~~~~~~~~~~
 1 error generated.
 make[2]: *** [IlmThread/CMakeFiles/IlmThread.dir/IlmThreadPool.cpp.o]
 Error 1

 }}}

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Ticket URL: <https://trac.macports.org/ticket/68428>
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