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The NETBSD OS has the hooks. Apple has just chosen not to implement them at this point in time. Message queues and interprocess communications (msg.h and ipc.h) are System V features. Cygwin for windows has a separate IPC daemon client to run that serves to support these features (though somewhat slowly since it is an application). Steve Chiswell Unidata User Support On Mon, 2004-05-24 at 22:22, David Blanchard wrote: > Steve Chiswell wrote: > > >David, > > > >MacOSX doesn't support message queues needed for GEMPAK. > >I have done all the work to build and test. The GUI and decoder > >programs work fine. But Panther and Jaguar don't have the > >system V ipc routines. > >http://my.unidata.ucar.edu/cgi-bin/getfile?file=/content/support/help/MailArchives/gempak/msg05909.html > >http://my.unidata.ucar.edu/cgi-bin/getfile?file=/content/support/help/MailArchives/gempak/msg05986.html > >http://my.unidata.ucar.edu/cgi-bin/getfile?file=/content/support/help/MailArchives/gempak/msg05987.html > > > >The Gemenviron I provide will recognize Darwin and set the necessary > >build parameters. The Apple GCC distribution didn't have G77 at the > >time, so I had to download that from fink, as well as openmotif. > > > >Steve Chiswell > > > > Steve, > > Thanks. It's too bad that the IPC is not supported. For now, I'll > continue to use my HP running 10.20. > > David > > +------------------------------------------------------------------------+ > | David O. Blanchard Flagstaff, Arizona address@hidden | > +------------------------------------------------------------------------+