How to set the global variable in a function for cmake?

Question

I\'m writing a CMakeLists.txt to generate files and compile the generated files. I create a function to add some file path strings to a global list variable.

My CMak

Answer 1

PARENT_SCOPE is only for parent, it won't work if you have other non-parent script that want to see it as well.

You need cache for the true "global-like" variable. In your case, use:

SET(source_list  "${source_list}" CACHE INTERNAL "source_list")