Re: [Xenomai] Cross-compiling RTDM driver errors

[Stefan Videv <videvstefan@gmail.com>]

On 11/05/2012 05:13 PM, Stefan Videv wrote:
> Hi,
>
> I am trying to cross compile a driver that I wrote which is very 
> similar to the one provided in the examples (tut02-skeleton-drv). I've 
> basically changed the write function to do what I am interested in 
> doing, everything else is the same (however I am not providing a read 
> function).
>
> During compilation I get the following error:
>
> FATAL: modpost: GPL-incompatible module vlcTxDriver.ko uses GPL-only 
> symbol 'rtdm_dev_unregister'
>
> What's that supposed to mean, and how do you get around it?
I answered my own question just now -- I've forgotten to define the 
module licence correctly. Having done that I end up with some undefined 
symbols, just like when trying to compile the POSIX examples.

Here's what I get:

WARNING: "pse51_shm_close" [/home/stefan/VLCTxDriver/vlcTxDriver.ko] 
undefined!
WARNING: "munmap" [/home/stefan/VLCTxDriver/vlcTxDriver.ko] undefined!
WARNING: "mmap" [/home/stefan/VLCTxDriver/vlcTxDriver.ko] undefined!
WARNING: "open" [/home/stefan/VLCTxDriver/vlcTxDriver.ko] undefined!

Any help is appreciated! Thanks!

>
> I am using the Makefile provided with the examples and compiling like so:
>
> make XENO=/media/rootfs/usr/xenomai/ ARCH=arm 
> CROSS_COMPILE=arm-linux-gnueabi- KSRC=~/beagle/linux/ 
> DESTDIR=/media/rootfs ADD_CFLAGS=-I/usr/arm-linux-gnueabi/include
>
>
> Thanks!
>
> -- Stefan