[MacPorts] #17198: dbus: error: `_SC_GETPW_R_SIZE_MAX' undeclared (first use in this function)

[MacPorts]

#17198: dbus: error: `_SC_GETPW_R_SIZE_MAX' undeclared (first use in this function)
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  Reporter:  ryandesign@…             |       Owner:  macports-tickets@…                   
      Type:  defect                   |      Status:  new                                  
  Priority:  Normal                   |   Milestone:  Port Bugs                            
 Component:  ports                    |     Version:  1.6.0                                
Resolution:                           |    Keywords:                                       
      Port:  dbus                     |  
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Comment(by yokota33@…):

 Replying to [comment:2 blb@…]:
 > It looks like 10.3 only has a subset of the sysconf() definitions that
 are present on 10.4+.  10.3 only goes through _SC_AIO_PRIO_DELTA_MAX at 44
 (and skips some on its way to 44), 10.4 goes to 125 with fewer skips, and
 10.5 adds a few more defines.

 So, for darwin 7, somehow the length of the related buffers must be given
 manually. In the fix patch, I set:
 {{{
 sysconf (_SC_GETPW_R_SIZE_MAX) = 4096
 sysconf (_SC_GETGR_R_SIZE_MAX) = 4096
 }}}
 and build ends successfully, but I'm not sure whether these values are
 actually appropriate for darwin (i386/ppc) systems. Does anybody know
 appropriate values for these? I attached test program to investigate these
 on your system, which may help to get some hints.

 In addition, I made a dirty hack on Portfile in which patching order
 matters (on darwin 7, two patches are applied on the same file). It works
 fine at my place, but I'm not sure whether this is a right thing to do. It
 may be better make patches which use the preprocessor to branch darwin
 versions, but unfortunately I'm new on Mac (someone left me an old mac!)
 and don't know which variable gives me the darwin versions. Does anyone
 know a better solution?

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Ticket URL: <http://trac.macports.org/ticket/17198#comment:12>
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