Compiling libs only once

[derFrickler]

We will use different makefiles to compile different sketches/projects all using the same esp core and arduino libraries. It might be that different projects are compiled in parallel.

Is is possible to use precompiled libraries that are shared for all makefiles/sketches to speed up the compile process and reduce the needed CPU power?

Thanks
Johannes

[plerup]

Please try activating the use of ccache