recompiling module without recompiling kernel

[aatwo]

Hey guys. I am looking to play around with some kernel modules for some MPT drivers to see if I can slightly alter their functionality, just to try and learn a bit more about them.

I am facing a bit of a problem straight out of the gate though, and I am unable to recompile these modules without recompiling the whole kernel, which is a 2+ hour job for my super slow PC

So does anyone know how to compile specific module without recompiling a whole Kernel?

Extra info that might help:

The module I am playing around with is called mptbase, located in /usr/src/linux-2.6.22/drivers/message/fusion/ and the related file in this directory are mptbase.o, mptbase.ko (the compiled module), mptbase.c and mptbase.h.

I tried using a guide that suggested the following makefile...

obj-m = mptbase.o
all: make -C /lib/modules/2.6.22-3-686/build M=$(PWD) module
clean: make -C /lib/modules/2.6.22-3-686/build M=$(PWD) clean

I placed this makefile in a folder on my desktop and ran it but it errored all over the place with the following output...

make[1]: entering directory `usr/src/linux-2.6.22`
make[1]: *** No rule to make target `module`. Stop.
make[1]: Leaving directory `/usr/src/linux-2.6.22`
make: *** [all] Error 2

I have also tried running the makefile in the modules directory but that errored everywhere too.

Thanks for reading

[rulingminds]

you should say 'make -C /lib/modules/2.6.22-3-686/build M=$(PWD) modules', it is modules not module.

First copy the mtpbase.c and mtpbase.h to a directory and write the above make file in that directory and run make.