On Thu, Jun 15, 2023 at 11:54:23AM +0200, Peter Oberparleiter wrote: > I'll likely not be able to implement this myself, but if you or anyone > else wants to go that route, here are my thoughts: $(src) should have > the relative source code path that is needed, so here's what needs to be > done: > > 1. Determine how to handle non-letter/digit/underscore characters in the > variable name: > > a) GCOV_PROFILE_fs/bcachefs => supported by GNU make [1], though > discouraged due to possible side-effects > b) GCOV_PROFILE_fs_bcachefs => might cause overlays, e.g. a/b/c and > a/b_c both have the same a_b_c suffix > > Personally I'd prefer option b) Agreed, feels more consistent > 2. Define a new Makefile variable that contains $(src) with required > character replacements (scripts/Kbuild.include might be a good place) > > 3. Add $(GCOV_PROFILE_$(name_of_that_new_var)) to the code quoted above > (scripts/Makefile.lib) So this is where I was getting stuck, because we really want this to apply to subdirectories (e.g. GCOV_PROFILE_fs_xfs should really also apply to fs/xfs/libxfs). Do we have existing code for generating a list of path prefixes for a given path?
