How to redirect output object files using a linux kernel Makefile?
 

When I use my makefile, the object files resulted from the source files that I have built resides in the same folder wherein the source files and Makefile are located. This makes the working folder crowded with object files. I wonder how can I redirect these object files for example I have an obj/ folder in my owrking directory, and I want to redirect all the object files into this directory.. How can I do this?

Thanks!