problems in building multi processor applications

[Joel Sherrill]

Francesco Poletti wrote:
> 
> Hy,
> sorry but probably I don't explain my problem very well.
> I have looked in the source code and, as I expected, the only shm_driver.h file
> which I found was in the c/src/lib/libbsp/shmdr directory.
> In that file there are the structure of the shared memory MPCI, in my board
> there is shmsupp but I don't written the shm_driver.h file...
> If I put the shm_driver.h and the mpci.h file in the install directory I can
> build the appliclation but the arm-rtems-gcc command use the no-mp.rel file:
> may be a problems of the Makefile?

If you are using the application Makefiles, then there is probably a 
line like this:


# optional managers required
MANAGERS=io

Add "mp" or "multi_processor" to the list.  Alternatively, just delete
this
line and let ld worry about what to pull in.

> Francesco Poletti wrote:
> >
> > Hy,
> >    I had succesfully build rtems for my multi arm simulator, then I run the
> > mptests routine and all works.
> > Now I want to build a sample application but I received this error:
> > -/home/poletti/rtemsmulti/arm-rtems/arm_bare_bsp/lib/include/confdefs.h:357:18:
> > mpci.h: No such file or directory
> >
> > that happened when I hadded to the file test.c:
> >
> > #define CONFIGURE_MP_APPLICATION
> > #define NODE_NUMBER 1
> >
> > I have looked into the build routines and I found mpci.h in the directory:
> > arm-rtems/arm_bare_bsp/lib/include/rtems/score/
> > but I don't found the shm_driver.h.
> 
> mpci.h defines the interface between RTEMS and the BSP specific MP
> communications
> software layer.
> 
> shm_driver.h is the .h file for a specific MPCI layer.  If your BSP does
> not have "shmsupp" then it isn't installed.  So arm_bare_bsp does not
> have shared memory support.  See a BSP that does (mvme147 or mvme136).
> 
> > Another strange things was that I found in the
> > rtemsmulti/arm-rtems/arm_bare_bsp/lib directory the no-mp.rel file.
> > I don't know the scope of that file but I found the name really "strange"...
> 
> Just because RTEMS is configured to support multiprocessing doesn't
> mean you have to use it.  That file means that the MP manager is
> still not required by every application.  MP apps should not link
> with it though.
> 
> > Thanks to anyone which help me!
> > Francesco
> 
> --
> Joel Sherrill, Ph.D.             Director of Research & Development
> joel at OARcorp.com                 On-Line Applications Research
> Ask me about RTEMS: a free RTOS  Huntsville AL 35805
> Support Available                (256) 722-9985

-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel at OARcorp.com                 On-Line Applications Research
Ask me about RTEMS: a free RTOS  Huntsville AL 35805
Support Available                (256) 722-9985