You also need to put into consideration though there are no "small" source files anymore as soon as you include anything from the C++ stdlib. Each tiny source f

You also need to put into consideration though there are no "small" source files anymore as soon as you include anything from the C++ stdlib. Each tiny source file ends up anywhere between 20 and 100kloc after includes. Also, many C++ projects I've seen indirectly include almost anything into anything under the hood, so a header change on one end of the project may trigger a rebuild of seemingly unrelated source files.