Re: Emc Help Required

[Will Shackleford <shackle-at-cme.nist.gov>]

You can't use the old modules with a newer kernel or rtlinux version. If 
you successfully built from source as your first message indicated then 
there should be a useable newer steppermod.o somewhere under the plat 
directory. If not then something went wrong during the compile and you 
will need to figure out what that was.

-- Will




Stephen Goldsmith wrote:

> . The Saga Continues....
> 
> When I copied the following file from another emc  release
> cp /cnc/emc3/emc/plat/rtlinux_09J/lib/steppermod.o
> into my 2_2_19/lib dir and the run ./emc.run
> 
> I get the following error....
> 
> [root-at-linux plat]# ../emc.run
> Current platform is linux_2_2_19
> Current real-time platform is 2_2_19
> inivar = plat/linux_2_2_19/bin/inivar
> INIFILE = emc.ini
> starting emc...
> /sbin/insmod -f /lib/modules/2.2.19/misc/rtl.o
> insmod: a module named rtl already exists
> starting EMC MOTION PROGRAM -- steppermod.o...Warning: kernel-module version
> mismatch plat/2_2_19/lib/steppermod.o was compiled for kernel version 2.0.36
> while this kernel is version 2.2.19
> 
> plat/2_2_19/lib/steppermod.o: unresolved symbol vremap
> plat/2_2_19/lib/steppermod.o: unresolved symbol rt_task_make_periodic
> plat/2_2_19/lib/steppermod.o: unresolved symbol rt_task_delete
> plat/2_2_19/lib/steppermod.o: unresolved symbol rtl_set_oneshot_mode
> plat/2_2_19/lib/steppermod.o: unresolved symbol rt_task_init
> plat/2_2_19/lib/steppermod.o: unresolved symbol rt_task_wait
> plat/2_2_19/lib/steppermod.o: unresolved symbol rt_task_use_fp
> plat/2_2_19/lib/steppermod.o: unresolved symbol do_rt_get_time
> can't install it
> 
> Mmmm more info
> 
> Regards,
> 
> Steve G.
> 
> 
> Stephen Goldsmith wrote:
> 
> 
>>Will,
>>
>>Thanks for your prompt reply.
>>
>>Additional info ....
>>
>>In the plat dir I only have the dir linux_2_2_19.
>>I created an empty dir 2_2_19 in the plat dir and now I have the following
>>error ...
>>
>>[root-at-linux plat]# ../emc.run
>>The current real-time platform appears to be 2_2_19 but no directory exists
>>for this platform.
>>Either install EMC for this platform or create a symbolic link to an
>>existing platform.
>>[root-at-linux plat]# mkdir 2_2_19
>>[root-at-linux plat]# ../emc.run
>>Current platform is linux_2_2_19
>>Current real-time platform is 2_2_19
>>inivar = plat/linux_2_2_19/bin/inivar
>>INIFILE = emc.ini
>>starting emc...
>>/sbin/insmod -f /lib/modules/2.2.19/misc/rtl.o
>>insmod: a module named rtl already exists
>>starting EMC MOTION PROGRAM -- steppermod.o...plat/2_2_19/lib/steppermod.o:
>>plat/2_2_19/lib/steppermod.o: No such file or directory
>>can't install it
>>
>>Do you have any ideas??
>>
>>Thanks in advance.
>>
>>Stephen Goldsmith
>>
>>Will Shackleford wrote:
>>
>>
>>>Stephen Goldsmith wrote:
>>>
>>>
>>>>Hello All
>>>>
>>>>Just installed rtlinux-3.0 and this seems to be functioning from the
>>>>examples, on a Redhat7 Dist.
>>>>The kernel = 2.2.19 (which is less than the original Redhat7 kernel
>>>>2.2.22).
>>>>
>>>>Downloaded the EMC emc-1.1-17.src.tar
>>>>Unpacked it!
>>>>
>>>>Ran the ./install script which I think succeeded with only minor
>>>>warnings.
>>>>
>>>>When attempting to run ./emc.run I get the following error :
>>>>
>>>>The current real-time platform appears to be 2_2_19 but no directory
>>>>exists for this platform.
>>>>Either install EMC for this platform or create a symbolic link to an
>>>>existing platform.
>>>>
>>>>
>>>>Any help on this matter would be greatly appreciated before I pull out
>>>> all my hair!
>>>>
>>>>Also does Emc run on this kernel version and rtlinux3.0 ?
>>>>
>>>>Regards
>>>>
>>>>Steve G.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>As I recall the emc.1.1-17 release was made just before RTLinux 3.0
>>>final was released. So while some of the porting to 3.0 had been done
>>>already using test versions of 3.0 it was really intended for 2.2. We
>>>have been running the CVS version of EMC under 3.0 for some time now.
>>>The CVS version changes from week to week. So sometimes you can get a
>>>reasonably stable system and sometimes it is completely broken.
>>>
>>>One of the changes from RTL 2.2 to 3.0 was that they dropped the rtl
>>>version number from the EXTRAVERSIONINFO flag when building the kernel
>>>so uname -s on a RTL 2.2 system says something like 2.2.14-rtl2.2 but on
>>>a 3.0 system something like 2.2.14-rtl. This confused the bash script
>>>emc.run that tries to determine the rtlinux version number.
>>>
>>>The new bash script doesn't use uname any more, it either gets it out of
>>>a file or asks the user if the file doesn't exist.
>>>
>>>One workaround you could try would be to do this
>>>
>>>cd emc/plat
>>>ln -s rtlinux_3_0 2_2_19
>>>
>>>-- Will
>>>
>>>--
>>>---------------------------------------------------------------
>>>William Penn Shackleford III                    shackle-at-nist.gov
>>>National Institute of Standards & Technology    Tel:    (301) 975-4286
>>>100 Bureau Drive Stop 8230                      FAX:    (301) 990-9688
>>>Gaithersburg MD  20899  USA
>>>http://www.isd.mel.nist.gov/personnel/shackleford/
>>>Office Location: Bldg. 220 Rm A253
>>>
> 
> 



-- 
---------------------------------------------------------------
William Penn Shackleford III			shackle-at-nist.gov
National Institute of Standards & Technology	Tel:	(301) 975-4286
100 Bureau Drive Stop 8230  			FAX:	(301) 990-9688
Gaithersburg MD  20899  USA
http://www.isd.mel.nist.gov/personnel/shackleford/
Office Location: Bldg. 220 Rm A253