[MacPorts] #13517: gtkglext 1.2 configure: error -- build failure OSX 10.5

[MacPorts]

#13517: gtkglext 1.2 configure: error -- build failure OSX 10.5
-----------------------------------------+----------------------------------
  Reporter:  michaelt@…                  |       Owner:  rowue@…           
      Type:  defect                      |      Status:  reopened          
  Priority:  Normal                      |   Milestone:  Port Bugs         
 Component:  ports                       |     Version:  1.7.0             
Resolution:                              |    Keywords:  gtkglext gwyddion 
      Port:  gtkglext                    |  
-----------------------------------------+----------------------------------

Comment(by rowue@…):

 After plugging in "tcl", compiling ''mesa'' works, installation in broken:


 {{{
 --->  Activating mesa @7.2_5+hw_render
 Error: Target org.macports.activate returned: Image error:
 /opt/local/include/GL/glxint.h is being used by the active xorg-glproto
 port.  Please deactivate this port first, or use the -f flag to force the
 activation.
 Warning: the following items did not execute (for mesa):
 org.macports.activate
 Error: Status 1 encountered during processing.
 }}}

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Ticket URL: <http://trac.macports.org/ticket/13517#comment:16>
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