> Cscope is built in (:cs). The kernels I work on have a make target for tags, which is also built in. You might also like `clangd` and `scripts/clang-tools/ge

> Cscope is built in (:cs). The kernels I work on have a make target for tags, which is also built in. You might also like `clangd` and `scripts/clang-tools/gen_compile_commands.py` if by kernel(s) you meant the linux kernel. It's pretty neat!