I am currently trying to swap static libraries in one of my projects which requires swapping find_package() commands for explicit links to static libraries. One of the problems I encountered is that even after deleting find_package() commands reloading the CMake Project the old variables are still present.
Is there a way to explicitly flush the CMake cache other than manually deleting all files from the temporary folder Clion creates for building the project?
Starting with CLion 1.5 144.3143 (2016-01-20), you can clear the cmake cache without loosing the CLion indexes and without restarting (meaning: very fast, also on huge projects):
Tool | CMake | "Reset cache and reload project".
If that for some reasons is not enough, or if you have an older CLion, you can do the more radical:
File | "Invalidate Caches / Restart"
and click on "Invalidate and restart".
EDITS
- 2016-01-20: add the faster method available with newer CLion.
There is some magic with this cache.
I got bad value for one variable once: by some reason cmake found some wrecked freetype includes inside mono.framework (another reason to dislike mono...) and tried to use them to compile my project. Obviously compilation failed.
I tried to remove CMakeCache.txt and rebuild project but incorrect path come back. Even after I removed mono.framework dir!
The solution was to remove incorrect line from the cache and restart the build. After that cmake got the correct path and build succeded.
UPD:
After I "reload cmake project" incorrect value came back. Deleting everything in $HOME/Library/Caches/clion11/cmake/generated/ dir (for OS X) seems to finally solve the issue.
来源：https://stackoverflow.com/questions/27526039/how-to-clear-cmake-cache-in-clion