[vtkusers] 'make' problems with vtkOpenGLExtensionManager::ReadOpenGLExtensions()

[Alark Joshi]

Hello,

I checked out code from the CVS directory yesterday and when I hit 'make' I 
get this error.

Building CXX object Rendering/vtkRendering.dir/vtkOpenGLExtensionManager.o
/home/grad1/alark1/gavl/vtk/VTK/Rendering/vtkOpenGLExtensionManager.cxx: In
   member function `virtual void
   vtkOpenGLExtensionManager::ReadOpenGLExtensions()':
/home/grad1/alark1/gavl/vtk/VTK/Rendering/vtkOpenGLExtensionManager.cxx:349: 
`
   glXGetCurrentDisplay' undeclared (first use this function)
/home/grad1/alark1/gavl/vtk/VTK/Rendering/vtkOpenGLExtensionManager.cxx:349: 
(Each
   undeclared identifier is reported only once for each function it appears
   in.)
make[2]: *** [Rendering/vtkRendering.dir/vtkOpenGLExtensionManager.o] Error 
1
make[1]: *** [Rendering/vtkRendering.dir/all] Error 2

Please could someone let me know what the problem might be.

Thanks,

Alark