[fpc-pascal] Problem using ipc with OSX and fpc 3.0.0

[Jonas Maebe]

Tony Whyman wrote on Wed, 20 Apr 2016:

> The problem is that the code makes a direct call to the semctl  
> function (defined in ipc.pp) and uses the SEM_GETVAL constant as the  
> command value. "Identifier not found errors" are returned for  
> SEM_GETVAL (and SEM_SETVAL as well).

That's indeed a bug in FPC 3.0, where these constants were  
accidentally disabled for Darwin. They have been re-enabled in svn  
already, and this fix will be in FPC 3.0.2.

To work around this bug, you can copy the constants to your own source  
file for now.


Jonas