Re: [Gc-linux-devel] Re: dvd kernelmodule

[<a.o...@bl...>]

On Sat, Apr 10, 2004 at 04:59:51PM +0200, JockyW wrote:
>
> Thanks for your reply, but fttb it doesn't really help me.
> 
> I have tried with this Makefile:
>     obj-m := gcdvd.o
>     module-objs := gcdvd.o cache.o
>
> But unfortunately cache.o isn't linked. After insmod gcdvd.o I get a unknown
> symbol, tho it is defined in cache.o

s/module-objs/gcdvd-objs/

> A bit strange is that insmod gcdvd.ko doesn't work at all because of a bad
> format or so. Only insmod gcdvd.o is accepted.

You'll need module-init-tools for that. Grab them from
http://kernel.org/pub/linux/utils/kernel/module-init-tools/

See also http://lwn.net/Articles/22197/

> As alternative to above Makefile I can take:
> TARGET  := gcdvd
> WARN    := -W -Wall -Wstrict-prototypes -Wmissing-prototypes
> INCLUDE := -I/usr/src/linux/include
> CFLAGS  := -c -O2 -DMODULE -D__KERNEL__ -DKBUILD_MODNAME="${TARGET}" ${WARN}
> ${INCLUDE}
> CC      := gcc-3.0
> 
> ${TARGET}.o: ${TARGET}.c
> cache.o: cache.S
> 
> .PHONY: clean
> 
> clean:
>  rm -rf ${TARGET}.ko
>  rm -rf ${TARGET}.o
> 
> But there is again the problem that I don't know how to extend it such that
> it also links cache.o
>
> Any help is appreciated!

See http://lwn.net/Articles/21823/ for how to properly compile external
modules.

	Arthur