On Mon, Jan 14, 2013 at 08:32:57AM -0800, Randy Dunlap wrote:

On 01/13/13 20:33, horseriver wrote:

...

hi:

How does kbuild build objects for subdirs of kernel source ?

It goes into subdirs recursively.

From top-level Makefile:

# Objects we will link into vmlinux / subdirs we need to visit init-y := init/ drivers-y := drivers/ sound/ firmware/ net-y := net/ libs-y := lib/ core-y := usr/

Then each subdir's Makefile has its own rules.

I do not think so ! every makefile in these subdirs only have defined obj files ,but not contained build rules . Thanks!

-- ~Randy