building kernel modules for linux differnet version

[Saket Sinha]

Hi,

         I have a scenario where I need to build a driver for
different kernel versions.
I have kernel-headers of different version in /lib/modules/
2.6.32-xxxx
2.6.39-xxxx

and currently I am booted into 2.6.32-xxxx(which I find out by uname -r)

Now in my driver makefile, I generate .ko of driver
make  -C   /lib/modules/$(shell uname -r)/build  M=$(PWD)  modules

but I notice that the driver .ko gets generated for 2.6.39-xxxx though
I am booted into  2.6.32-xxxx. Can anyone help me figure out why this
is happening?

Regards,
Saket Sinha