How do I know when I can read the CMakeCache.txt

Code
1

If I within cmake want to know when the CMakeCache file from the configure step is ready to be read, what would be a good way to do this?
I was looking at using cmake_language DEFER DIRECTORY ${CMAKE_SOURCE_DIR} CALL my_cache_reading_function()) but that gives that this file “cannot be read” despite being there at this time.

2

CMakeCache.txt is not written until after the configure step is done, so you can’t read from it during the processing of CMakeLists.txt. If you really want to read from it, I would defer it with an add_custom_command().

3

Thanks, yes, I’ll go that route then.