Include a header file of a kernel module from another module

Question

Is there an elegant way (more elegant than the symlink solution) to include a kernel module header from another module?

• module_a:
  • module_a.c
  • module_a.h
• module_b:
  • module_b.c

Let's say module_b.c needs to include module_a.h.

I tried adding DEPENDS = "module_a" to module_b.bb, then #include <module_a/module_a.h> to module_b.c without success.

It works from an app that includes a module header... I don't know if it doesn't work for cross module dependencies or I simply missed something.