[MacPorts] #33737: xorg-libxcb build pegs cpu with 'dot' processes

[MacPorts]

#33737: xorg-libxcb build pegs cpu with 'dot' processes
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 Reporter:  jonesc@…                  |       Owner:  macports-tickets@…                   
     Type:  defect                    |      Status:  new                                  
 Priority:  Normal                    |   Milestone:                                       
Component:  ports                     |     Version:  2.0.4                                
 Keywords:                            |        Port:  xorg-libxcb                          
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 The update to port xorg-libxcb pegs the CPU running the 'dot' command as
 part of a doxygen documentation build. I eventually had to kill it after
 several hours.

 It appears the issue is if the user has doxygen installed, the build finds
 this and uses it to generate docs. If I remove doxygen the build proceeds
 normally and completes in less than a minute.

 I would suggest building the docs should be optional, and disabled by
 default, even if the user has doxygen installed.

 cheers Chris

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Ticket URL: <https://trac.macports.org/ticket/33737>
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