Re: comedi working only with Allsoft RTAI?

From: Ivan Martinez <imr_at_oersted.dtu.dk> · Date: Fri, 1 Nov 2002 10:48:36 +0100

In my case, using a 2.4 kernel doesn't make things "ok":
https://cvs.comedi.org/pipermail/comedi/2002-October/003694.html
Is there anybody that managed to install the latest Comedi with a 
rthal-patched kernel at all?.
Ivan Martinez

On Thursday 31 October 2002 11:14 pm, Jim Benson wrote:
> I'm having these same problems with RTAI 24.1.10 and comedi.
> I have been looking around in the rtai code and i see that:
>
> cat /usr/src/rtai-24.1.10/include/asm-i386/rtai.h
>
> #ifdef CONFIG_RTAI_LINUX22
> #include <asm/rtai-22.h>
> #else
> #include <asm/allsoft_rtai.h>
> #endif
>
> and
>
> cat /usr/src/rtai-24.1.9/include/asm-i386/rtai.h
>
> #ifdef CONFIG_RTAI_LINUX22
> #include <asm/rtai-22.h>
> #else
> #include <asm/rtai-24.h>
> #endif
>
> ...so doen't comedi include
> the else part for both cases?...since it knows
> nothing about RTAI defines (CONFIG_RTAI_LINUX22)...
> ok unless one is using 2.2.
>
> But then in allsoft_rtai.h
> there is:
>
> #ifdef CONFIG_RTAI_RTHAL
>
> #define HARD_CLI                 hard_cli
> #define HARD_STI                 hard_sti
> #define HARD_RESTORE_FLAGS       hard_restore_flags
> #define HARD_SAVE_FLAGS          hard_save_flags
> #define HARD_SAVE_FLAGS_AND_CLI  hard_save_flags_and_cli
>
> #else
>
> #define hard_cli                 HARD_CLI
> #define hard_sti                 HARD_STI
> #define hard_restore_flags       HARD_RESTORE_FLAGS
> #define hard_save_flags          HARD_SAVE_FLAGS
> #define hard_save_flags_and_cli  HARD_SAVE_FLAGS_AND_CLI
>
> #endif
>
> ...again it does the else...and cause warnings like:
>
> /usr/src/rtai/include/asm/allsoft_rtai.h:196: warning: `hard_cli'
> redefined
> /usr/src/linux-2.4.19/include/asm/system.h:321: warning: this is the
> location of the previous definition
>
> and eventually the:
> > depmod: *** Unresolved symbols in
> > /lib/modules/2.4.19-rthal5/comedi/comedi/comedi.o
> > depmod:         HARD_CLI
> > depmod:         HARD_RESTORE_FLAGS
> > depmod:         HARD_SAVE_FLAGS_AND_CLI
>
> ???
>
> Thanks,
>
> Jim
>
> On 30 Oct 2002, Axel von Arnim wrote:
> > Hi,
> >
> >    I installed RTAI 24.1.10 rthal5 on my 2.4.19 kernel. No problem
> > (well, after a number of kernel recompilations and gcc version
> > changes...).
> >   I configured comedi-0.7.65 so that it uses RTAI. After compilation and
> > many warnings in /usr/src/rtai/include/asm/allsoft_rtai.h telling that
> > HARD_CLI() and other HARD_... functions were implicitly declared, I had
> > depmod error reports:
> >
> > /sbin/depmod -ae
> > depmod: *** Unresolved symbols in
> > /lib/modules/2.4.19-rthal5/comedi/comedi/comedi.o
> > depmod:         HARD_CLI
> > depmod:         HARD_RESTORE_FLAGS
> > depmod:         HARD_SAVE_FLAGS_AND_CLI
> > depmod:         HARD_STI
> > depmod: *** Unresolved symbols in
> > /lib/modules/2.4.19-rthal5/comedi/comedi/drivers/ni_pcimio.o
> > depmod:         HARD_RESTORE_FLAGS
> > depmod:         HARD_SAVE_FLAGS_AND_CLI
> > depmod: *** Unresolved symbols in
> > /lib/modules/2.4.19-rthal5/comedi/comedi/kcomedilib/kcomedilib.o
> > depmod:         HARD_RESTORE_FLAGS
> > depmod:         HARD_SAVE_FLAGS_AND_CLI
> >
> > I looked for the declarations of these functions in the rtai source code
> > and found that they were defined in the allsoft kernel patch. Does it
> > mean that rtai-comedi does only work with the allsoft patch, and NOT
> > with the rthal patch? If yes, where is this documented? I didn't find
> > mention of it anywhere.
> >
> > Should I patch the kernel with allsoft instead of rthal to solve my
> > problem?
>
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