Re: compiling external kernel modules (comedi.org)

From: Bernd Porr (Bernd.Porr@cn.stir.ac.uk)
Date: Sat Aug 02 2003 - 08:10:24 EST


Sam,

how can I include the "legal way" includes for comedi? Just now comedi
has set up a "linux/include" path in its directory but I think this not
the elegant way and it also dosn't work right now.

snoopy:/home/bp1/c/usb/2.6/comedi/comedi# make -C
/usr/src/linux-2.6.0-test2 SUBDIRS=$PWD V=1 modules
make: Entering directory `/usr/src/linux-2.6.0-test2'
make -f scripts/Makefile.build obj=scripts
make -f scripts/Makefile.build obj=arch/i386/kernel
arch/i386/kernel/asm-offsets.s
make[1]: `arch/i386/kernel/asm-offsets.s' is up to date.
*** Warning: Overriding SUBDIRS on the command line can cause
*** inconsistencies
mkdir -p .tmp_versions
make -f scripts/Makefile.build obj=/home/bp1/c/usb/2.6/comedi/comedi
  gcc -Wp,-MD,/home/bp1/c/usb/2.6/comedi/comedi/.comedi_fops.o.d
-D__KERNEL__ -Iinclude -Wall -Wstrict-prototypes -Wno-trigraphs -O2
-fno-strict-aliasing -fno-common -pipe -mpreferred-stack-boundary=2
-march=athlon -Iinclude/asm-i386/mach-default -nostdinc -iwithprefix
include -DMODULE -DKBUILD_BASENAME=comedi_fops
-DKBUILD_MODNAME=comedi_fops -c -o
/home/bp1/c/usb/2.6/comedi/comedi/comedi_fops.o
/home/bp1/c/usb/2.6/comedi/comedi/comedi_fops.c
/home/bp1/c/usb/2.6/comedi/comedi/comedi_fops.c:42:29:
linux/comedidev.h: No such file or directory

/Bernd
P.S.: I'm subscribed...

Sam Ravnborg wrote:

>On Sat, Aug 02, 2003 at 12:53:07PM +0100, Bernd Porr wrote:
>
>
>>Ok. Thanks. Now the bug is that comedi cannot find the file "Rules.make"
>>which is apparently no longer there in 2.6. Is it right that the rules
>>are now integrated in the corresponding makefiles?
>>
>>
>
>The way to find the Makefiles changed during the 2.5 development
>cycle. Now the kbuild Makefile (the one for comedi for example) are
>included from scripts/Makfile.build hereby obsoleting Rules.make.
>
>You will NOT succeed creating a single simple makefile supporting both
>2.4 and 2.6. On the other hand the Makefile are so trivial that creating
>two distinct version should be acceptable?
>
>
>
>>Can you recommend me a Makefile which I can take as a template? Comedi
>>uses some sort of autoconfig and I have to append then the "rules" to
>>the automatically generated makefile.
>>
>>
>
>The most simple Makefile looks like this:
>
>obj-m := comedi.o
>
>No more is actually needed.
>You should get rid of export-objs as well - they are also obsoleted
>in 2.5/2.6.
>
>
>
>
>>Another thing: can a prevent the kernel of generating the "Stage 2"? It
>>would be nice if the kernel doen't need to write to it's own directories
>>if it compiles external modules.
>>
>>
>
>The right fix is to allow you to build a kernel in a directory
>separate from the kernel src. This is WIP - hopefully included in
>mainline within a few weeks.
>
>PS. Please do not cc: subscription only mailing lists.
>
> Sam
>-
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-- 
http://www.cn.stir.ac.uk/~bp1/
mailto:bp1@cn.stir.ac.uk

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