gcc compile kernel 2.6 module

gcc compile kernel 2.6 module

[Frank Coldwell]

Hi all,

Does anybody know how should look gcc compilation line
to compile kernel module for kernel 2.6

In 2.4 it looks like this:
----------------------------------------------------
TARGET := hello-1
WARN := -W -Wall -Wstrict-prototypes -Wmissing-prototypes
INCLUDE := -isystem /lib/modules/`uname -r`/build/include
CFLAGS := -O2 -DMODULE -D__KERNEL__ ${WARN} ${INCLUDE}
CC := gcc-3.0

${TARGET}.o: ${TARGET}.c

.PHONY: clean

clean:
rm -rf ${TARGET}.o
----------------------------------------------------

and for multiple source files, like this:
----------------------------------------------------
CC=gcc
MODCFLAGS := -O -Wall -DMODULE -D__KERNEL__

hello.o: hello2_start.o hello2_stop.o
ld -m elf_i386 -r -o hello2.o hello2_start.o hello2_stop.o

start.o: hello2_start.c
${CC} ${MODCFLAGS} -c hello2_start.c

stop.o: hello2_stop.c
${CC} ${MODCFLAGS} -c hello2_stop.c
----------------------------------------------------

Kind regards,

Dragoslav Zaric
MSc Astrophysics
Professional programmer

Re: gcc compile kernel 2.6 module

[Jiri Slaby]

On 10/03/2010 01:31 PM, Frank Coldwell wrote:
> Does anybody know how should look gcc compilation line
> to compile kernel module for kernel 2.6

Don't do this on your own, leave it on kbuild:
Documentation/kbuild/modules.txt

regards,
-- 
js

Re: gcc compile kernel 2.6 module

[Américo Wang]

On Sun, Oct 03, 2010 at 03:31:01PM +0400, Frank Coldwell wrote:
>Hi all,
>
>Does anybody know how should look gcc compilation line
>to compile kernel module for kernel 2.6
>
>In 2.4 it looks like this:
>----------------------------------------------------
>TARGET := hello-1
>WARN := -W -Wall -Wstrict-prototypes -Wmissing-prototypes
>INCLUDE := -isystem /lib/modules/`uname -r`/build/include
>CFLAGS := -O2 -DMODULE -D__KERNEL__ ${WARN} ${INCLUDE}
>CC := gcc-3.0
>
>${TARGET}.o: ${TARGET}.c
>
>.PHONY: clean
>
>clean:
>rm -rf ${TARGET}.o

In 2.6, it would be much simpiler, kbuild has some pre-defined
variables for you to use, so you don't need to, e.g. specify
INCLUDE and CFLAGS in this way.

Please read Documentation/kbuild/*.