vtkX11Functions

The VTK::x11 module provides a minimal interface to X11. It locates the X11 libraries and makes their include directories available to dependent modules. There is a VTK_HAVE_XCURSOR preprocessor boolean which indicates whether Xcursor support is available or not. Linking to X11 libraries is intentionally deferred to runtime, allowing projects to avoid unnecessarily depend on libX11, when X11 functionality is not required. This is true when using the EGL, or OSMesa render windows.