Setting the $(KIT_SHARED_IncludePath) variable for driver header inclusions

Following http://ift.tt/19jtWjc

I received an error similar to this one: error C1083: Cannot open include file: '\inc\wxp\warning.h': No such file or directory

The suggested fix does remedy the initial problem, however, there are other unlocated header files. Rather than locate and change each path manually, how would I set $(KIT_SHARED_IncludePath) to point to the correct folder, since the error appears to be arising due to this path variable being incorrect?