CMake has several build types like Release, Debug, Release with debug info and Minimum size release. I was wondering if another build types can be added like Profile by users and if it is a well-known practice done by other programmers.
You definitely can add your own build types. Here is the example of how to do it. Essentially, you just need to add all the variables like CMAKE_CXX_FLAGS_XXX with the suffix corresponding to your build type and of course update the CMAKE_BUILD_TYPE variable to account for the new type. Not sure how well-know this practice is(personally I never did it) but it certainly looks viable.