[MacPorts] #29279: policykit build fails -- polkitagenthelperprivate.c uses fdatasync()

[MacPorts]

#29279: policykit build fails -- polkitagenthelperprivate.c uses fdatasync()
---------------------------------+------------------------------------------
 Reporter:  gnwiii@…             |       Owner:  macports-tickets@…                   
     Type:  defect               |      Status:  new                                  
 Priority:  Normal               |   Milestone:                                       
Component:  ports                |     Version:  1.9.2                                
 Keywords:  policykit fdatasync  |        Port:  policykit                            
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 In polkitagenthelperprivate.c there are two calls to fdatasync().
 This results in a build failure (unsatfisfied external).

 According the linux man page

 {{{
 On  POSIX  systems  on  which fdatasync() is available,
 _POSIX_SYNCHRONIZED_IO is defined in <unistd.h> to a
 value greater than 0.
 }}}

 Here, Leopard and Snow Leopard {{{/usr/include/unistd.h}}} as well as the
 Developer/SDK versions all have:

 {{{
 #define _POSIX_SYNCHRONIZED_IO (-1)
 }}}

 As a workaround, I just edited the file to replace fdatasync with fdata
 and the build succeeded.  A Google search suggests that some
 OS X systems do have fdatasync, but that the headers don't provide a
 prototype.

-- 
Ticket URL: <https://trac.macports.org/ticket/29279>
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