[linux-dvb] Problems with building own module

Christian Praehauser cpraehaus at cosy.sbg.ac.at
Thu Dec 20 12:06:20 CET 2007


Hello!

Did you do a "make config" and enabled your module for the build process?

Cheers,
Christian.

Ben Backx wrote:
> Hi,
> 
>  
> 
> I’m almost finished with the beta of a new driver, but the final part is 
> giving me a headache.
> 
> I created my own Makefile, and as long as I compile with that Makefile, 
> everything goes fine (except insmodding, but perhaps this goes better 
> when I build the module together with the rest of the v4l-tree).
> 
> First, my system specs:
> 
> It’s an AMD Athlon XP 2500+ with Ubuntu 7.10 and standard kernel of 
> Ubuntu (version 2.6.22-14).
> 
>  
> 
> The makefile I created looks something like this:
> 
>  
> 
> *obj-m += dvb-driver.o*
> 
> * *
> 
> *dvb-driver-objs := driver.o otherfile.o another.o*
> 
> * *
> 
> *EXTRA_CFLAGS := -I/usr/src/linux-source-2.6.22/drivers/ieee1394*
> 
> *EXTRA_CFLAGS += -I/usr/src/linux-source-2.6.22/drivers/media/dvb/dvb-core *
> 
> *EXTRA_CFLAGS += -I/usr/src/linux-headers-$(shell uname -r)*
> 
> *EXTRA_CFLAGS += -I/usr/src/linux-headers-$(shell uname -r)/include*
> 
> * *
> 
> *all:*
> 
> *                make -C /lib/modules/$(shell uname -r)/build M=$(PWD) 
> modules*
> 
> * *
> 
> *clean:*
> 
> *                make -C /lib/modules/$(shell uname -r)/build M=$(PWD) 
> clean*
> 
> * *
> 
> Compilation using this file goes fine.
> So, I modified this file as is stated in README.patches and created 
> something like this:
> 
>  
> 
> *obj-$(CONFIG_DVB_DRIVER)     := dvb-driver.o*
> 
> **
> 
> *dvb-driver-objs := driver.o otherfile.o another.o*
> 
> * *
> 
> *EXTRA_CFLAGS := -I/usr/src/linux-source-2.6.22/drivers/ieee1394*
> 
> *EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core*
> 
> **
> 
> *driver.c: driver.h otherfile.h another.h*
> 
> *otherfile.c: otherfile.h driver.h*
> 
> *another.c: another.h otherfile.h*
> 
> * *
> 
> I added all the source-files to the directory dvb-driver in the folder 
> linux/drivers/media/dvb off the v4l-dvb-tree.
> 
> Then, I modified linux/drivers/media/dvb/Makefile so it contains the 
> folder of my driver. Finally, I added “source 
> “drivers/media/dvb/dvb-driver/Kconfig” to linux/drvers/media/dvb/Kconfig.
> 
>  
> 
> Now, when I try to build the complete library, there’s no dvb-driver.o 
> (or any other off the .o-files) created. Some source-files are copied to 
> the v4l-directory, but no object is created.
> 
> Can anyone help me out with this? Because I’m rather stuck for the moment L
> 
>  
> 
>  
> 
> Greetings,
> 
> Ben
> 
> 
> ------------------------------------------------------------------------
> 
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> linux-dvb at linuxtv.org
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-- 
Christian Praehauser <cpraehaus at cosy.sbg.ac.at>
|| //\\//\\ || Multimedia Communications Group,
||//  \/  \\|| Department of Computer Sciences, University of Salzburg
http://www.cosy.sbg.ac.at/~cpraehaus/
http://www.network-research.org/
http://www.uni-salzburg.at/



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