Using llvm as a lib. #include files missing

Hi,

I am trying to use LLVM as a lib in my project.
In order to do this, I am having to copy
"./lib/Target/X86/MCTargetDesc/X86BaseInfo.h" into my project
directory because it is not contained in the ./include directory

Why is X86BaseInfo.h and its dependents not included in the ./include directory?
I need that information in order to manipulate the MCInst.

KInd Regards

James