How to do "out-of-source" build properly with cmake?
There are two broad types of build environments - in-source and out-of-source. "In-source" means the compiled files will appear in the same directory as source files. "Out-of-source" means there is a dedicated directory for compilation results. It seems the latter one is more suitable for large projects, and it is also recommended by cmake.
Suppose my project contains several libraries, which have their own cmake fiels,
I have two options - store build results for the libraries in the directories where libraries are, or in the directory of the project I am building.
project possible place to put build results for libA and libB project_1.cpp project_2.cpp libA possible place to put build results for libA libA_1.cpp libA_2.cpp libB possible place to put build results for libB libB_1.cpp libB_2.cpp
Is there an option which is preferred by cmake?
Are there any obscure considerations which make one or the other option preferable?