How to clear/delete a cache variable

Question

Trying to get find_path to do what I want.

find_path(temmp include/help.h)
message(\"temmp= ${temmp}\")

help.h is found. The

Answer 1

You can use unset:

unset(temmp CACHE)

As an aside, the find_path calls should be more like:

find_path(temmp help.h include)