Multiple environments vs multiple projects

FAQ
1

I’m working on a project building many firmwares on different boards sharing some common libs.
I will manage different main functions (call them sub projects), I’m a bit confused on what could be the best solution:

  • multiple environments, one for each firmware: in this case I need some tips on how to filter sources per sub project
  • multiple projects sharing a common library: in this case I need some tips on how to make libraries shared by multiple projects

thank you

2

For both of these topics and documentation already exist. For the first one you want srcFilter, for the second one you probably want lib_extra_dirs. Examples are e.g. here and here.