I am trying to improve bridge module towards 802.1w (RSTP) but I am new to kernel and modules programming. I dont want to compile the whole modules every time I make some changes. Could you give me some clues how to set up environment to compile only selected module (bridge 802.1d) for a given kernel version, written in Makefile like: VERSION = 2 PATCHLEVEL = 4 SUBLEVEL = 20 EXTRAVERSION =-8 etc. How to make a Makefile so the bridge module could be compiled separately for that kernel (or another)? Thanks for any specyfic help. Software Team