Re: [RTnet-developers] RTnet Configuration Issue "Unsupported kernel version"

[Jan K. <jan...@si...>]

James Kilts wrote:
> When I try to configure RTnet using the autotools in a cross-compile
> environment, I get the error "*** Unsupported kernel version".  What's
> interesting is that I had this issue before, but by commenting out the
> variable "CONFIG_RTNET_RTEXT_CLASSIC=y" in the configure.ac script it
> could identify xenomai and the linux kernel.  This allowed me to build
> valid kernel modules for arm-linux.  I committed all of the changes
> into a local GIT repository and noted all of the environment variables
> (PATH, CROSS_COMPILE, ARCH, etc) to ensure that I could get back to a
> working build.
> 
> This most recent problem started after I rebuilt my development
> machine kernel with Xenomai and RTnet so that I could properly test
> the device.  Now that I go back to the cross-compile environment, I'm
> running into the same problem as before, and I can verify that my
> environment now to cross-compile RTnet is the same as before.
> 
> I've also tried re-running the "scripts/autogen.sh" with
> "CONFIG_RTNET_RTEXT_CLASSIC=y" enabled again, but it still gives the
> same error.
> 
> Finally, to my questions:  Why did I have to disable
> CONFIG_RTNET_RTEXT_CLASSIC to make the build work in the first place?
> Are there known issues with the autotool configuration for RTnet?  Any
> ideas as to what could be going wrong?

CONFIG_RTNET_RTEXT_CLASSIC only applies to very old Xenomai version (or
to RTAI), so this is probably wrongly configured. But you did not tell
us what your Xenomai version is.

BTW, a short description how to cross-compile RTnet can also be found a
trtnet/drivers/mpc52xx_fec/README.

Jan

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