How to use libraries in XILINX (VHDL)

[sarjumaharaj]

I came across this library in vhdl use work.cpu_lib.all; How do i use this library? I typed it out but it didn't recognize it as a key word. I mean for regular libraries and key words the color of the text changes to blue right? But this one didn't. What should I do.

 

[TrickyDicky]

cpu_lib is a custom library - you will need the source code.