On ccache site, there is section "Why bother?", the very first line:
>If you ever run `make clean; make`, you can probably benefit from ccache. It is common for developers to do a clean build of a project for a whole host of reasons, and this throws away all the information from your previous compilations. By using ccache, recompilation goes much faster.
>If you ever run `make clean; make`, you can probably benefit from ccache. It is common for developers to do a clean build of a project for a whole host of reasons, and this throws away all the information from your previous compilations. By using ccache, recompilation goes much faster.