[vtkusers] installing VTK on Mac

[k_yang]

Hi there,
I am trying to install VTK4.2.5 on Mac 10.3 using X.
I got the following message while I was builind VTK with ccmake.
Does anyone know why this happened?
Thank!
	kay

***********************************************

Building executable /Developer/SciVis/VTK/bin/Graphi
csCxxTests...
ld: Undefined symbols:
_glXChooseVisual
_glXCreateContext
_glXDestroyContext
_glXGetClientString
_glXGetConfig
_glXGetCurrentContext
_glXIsDirect
_glXMakeCurrent
_glXQueryExtension
_glXQueryExtensionsString
_glXQueryServerString
_glXSwapBuffers
make[5]: *** [/Developer/SciVis/VTK/bin/GraphicsCxxT
ests] Error 1
make[4]: *** [default_target] Error 2
make[3]: *** [default_target_Cxx] Error 2
make[2]: *** [default_target] Error 2
make[1]: *** [default_target_Graphics_Testing] Error
 2
make: *** [default_target] Error 2