RTEMS 5 how to run "hello" example

Olga Syrbachova syrba4eva28 at gmail.com
Wed Mar 17 15:11:19 UTC 2021


Thanks a lot! I have one more stupid question. How do I run examples from
git? I've cloned rtems-examples and tried to follow the instructions from
"README.waf", but it doesn't work. When I enter

    $ waf configure --rtems=$HOME/development/rtems/bsps/5 \
                    --rtems-tools=$HOME/development/rtems/5 \
                    --rtems-bsps=sparc/erc32

I get this error:
       Command 'waf' not found, did you mean: ...

I probably do something wrong. Do I need to do the instructions from
"README.waf" at all? Or do I need to proceed as in this tutorial
https://docs.rtems.org/branches/master/user/start/app.html with every
example's directory? I would really appreciate some step-by-step
tutorial or instructions as I'm totally frustrated right now and don't
understand what to do.

Btw there is a makefile in every example's directory. Can I use it
instead of waf to compile the applications? If this is the case how do
I do it?

Many thanks in advance for any help!!!


On Tue, 16 Mar 2021 at 20:07, Joel Sherrill <joel at rtems.org> wrote:

>
>
> On Tue, Mar 16, 2021 at 1:40 PM Olga Syrbachova <syrba4eva28 at gmail.com>
> wrote:
>
>> Thank you very much for your reply and for your concern!
>>
>> Actually I'd like to create my own application and test some mechanisms,
>> provided by RTEMS. This is a part of my Bachelor Thesis. I'd like,
>> for example, to create two/three tasks and make them communicate with each
>> other via queues, schedule them by priority etc. I have some experience
>> with FreeRTOS. It is run via Visual Studio, which is quite simple. And now
>> with RTEMS I am a bit frustrated and don't know where to start. That's why
>> I followed the tutorial on the Website. "Hello World" program worked just
>> fine, so I decided to try some more complicated applications before I start
>> with my own, that's why I decided to build "ticker" with waf. Unfortunately
>> I didn't find any helpful (for me) tutorial on how to create applications
>> in RTEMS. I mean I can handle writing the App's code, but I don't get it
>> how to compile and run it. So I was just going to do the same as in the
>> tutorial, but with my own application. Is it the right way to proceed or is
>> there another way ?
>>
>
> The tests in RTEMS are just that tests. They depend on things that
> shouldn't be installed or used by user applications.
>
> I would recommend cloning rtems-examples and going from one of those.
> There is a directory with variations on ticker and I suspect the base one
> is a better one to start from.
>
> If you want to write POSIX code, one of the POSIX examples there would
> serve you ok
>
> --joel
>
>
>>
>>
>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virenfrei.
>> www.avast.com
>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>
>> <#m_277508452244861825_m_-8462729502950921950_m_6778778117170402098_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
>>
>> On Tue, 16 Mar 2021 at 16:29, Vijay Kumar Banerjee <vijay at rtems.org>
>> wrote:
>>
>>> On Tue, Mar 16, 2021 at 4:07 AM Olga Syrbachova <syrba4eva28 at gmail.com>
>>> wrote:
>>> >
>>> > Thank you very much for your reply!
>>> >
>>> > I've added
>>> > includes =
>>> '/home/olga/development/rtems/rtems-5/testsuites/support/include/tmacros.h',
>>> >
>>> It takes the relative address to the directory where the header file
>>> is. For example, if you're building from the
>>> "/home/olga/development/rtems" directory the includes argument would
>>> be:
>>>
>>> `includes = './rtems-5/testsuites/support/include/'`
>>>
>>> BTW, your first email at the start of the thread says that you just
>>> want to run the samples, the samples get built as a part of the rtems
>>> and you'll be able to see the *.exe files in the build directory. Is
>>> there any reason that you're trying to build it in a separate
>>> directory with waf? Experimenting with the build system is a good
>>> reason though, just making sure that we're not pushing you in the
>>> wrong direction and your objective is indeed to try waf on your own
>>> and not just running RTEMS hello app.
>>>
>>> Best regards,
>>> Vijay
>>>
>>>
>>> > it still says "No such file or directory". I'm pretty sure the path is
>>> write, though there is now another path to "tmacros.h" (the first one
>>> below), it's a folder named "tmacros.h" and it's empty.
>>> > olga at olga-H270M-DS3H:~$ locate tmacros.h
>>> >
>>> /home/olga/development/app/ticker/build/sparc-rtems5-erc32/$HOME/developement/rtems/rtems-5/testsuites/support/include/tmacros.h
>>> >
>>> /home/olga/development/rtems/rtems-5/testsuites/support/include/tmacros.h
>>> >
>>> >
>>> > On Mon, 15 Mar 2021 at 21:00, Vijay Kumar Banerjee <vijay at rtems.org>
>>> wrote:
>>> >>
>>> >> On Mon, Mar 15, 2021 at 1:53 PM Olga Syrbachova <
>>> syrba4eva28 at gmail.com> wrote:
>>> >> >
>>> >> > Sure! https://github.com/syrba4eva/RTEMS/blob/main/wscript
>>> >>
>>> >> Thanks. In this line:
>>> https://github.com/syrba4eva/RTEMS/blob/main/wscript#L33
>>> >> After cflags parameter, add "includes", for example:
>>> >>
>>> >> bld(features = 'c cprogram',
>>> >>       target = 'ticker.exe',
>>> >>       cflags = '-g -O2',
>>> >>       includes='. .. ./original/path/to/tmacros.h',
>>> >>       source = ['init.c', 'tasks.c'])
>>> >>
>>> >> you don't need to copy tmacros.h or any headers from rtems, just add
>>> >> the path to includes.
>>> >>
>>> >>
>>> >> Best regards,
>>> >> Vijay
>>> >>
>>> >> >
>>> >> > On Mon, 15 Mar 2021 at 20:36, Vijay Kumar Banerjee <vijay at rtems.org>
>>> wrote:
>>> >> >>
>>> >> >> On Mon, Mar 15, 2021 at 1:30 PM Olga Syrbachova <
>>> syrba4eva28 at gmail.com> wrote:
>>> >> >> >
>>> >> >> > Thank you very much for your reply!
>>> >> >> > Unfortunately I'm still a bit confused and don't quite
>>> understand what to do. Where do I need to modify the "include" parameter?
>>> In the wscript file from the "hello" example there is no "include"
>>> parameter. I also tried to find a tutorial on how to write a wscript, but
>>> didn't find any (Could you suggest any please?). So I tried to copy the
>>> file "tmacros.h" from testsuites/support/include to app/ticker. Now after
>>> running ./waf I get an error, which tells me that "buffer_test_io.h" wasn't
>>> found. When I copied it to my app/ticker directory it didn't work and I
>>> still have the same error.
>>> >> >> >
>>> >> >> Would it be possible for you to paste your wscript somewhere (like
>>> >> >> gist.github.com) and share it here so that we can have a look and
>>> help
>>> >> >> you with that?
>>> >> >>
>>> >> >> Best regards,
>>> >> >> Vijay
>>> >> >>
>>> >> >> > Waf: Entering directory
>>> `/home/olga/development/app/ticker/build/sparc-rtems5-erc32'
>>> >> >> > [1/3] Compiling tasks.c
>>> >> >> > [2/3] Compiling init.c
>>> >> >> > In file included from ../../system.h:17:0,
>>> >> >> >                  from ../../init.c:15:
>>> >> >> > ../../tmacros.h:32:10: fatal error: buffer_test_io.h: No such
>>> file or directory
>>> >> >> >  #include <buffer_test_io.h>
>>> >> >> >           ^~~~~~~~~~~~~~~~~~
>>> >> >> > compilation terminated.
>>> >> >> >
>>> >> >> > In file included from ../../system.h:17:0,
>>> >> >> >                  from ../../tasks.c:22:
>>> >> >> > ../../tmacros.h:32:10: fatal error: buffer_test_io.h: No such
>>> file or directory
>>> >> >> >  #include <buffer_test_io.h>
>>> >> >> >           ^~~~~~~~~~~~~~~~~~
>>> >> >> > compilation terminated.
>>> >> >> >
>>> >> >> > Waf: Leaving directory
>>> `/home/olga/development/app/ticker/build/sparc-rtems5-erc32'
>>> >> >> > Build failed
>>> >> >> >  -> task in 'ticker.exe' failed with exit status 1 (run with -v
>>> to display more information)
>>> >> >> >  -> task in 'ticker.exe' failed with exit status 1 (run with -v
>>> to display more information)
>>> >> >> >
>>> >> >> > On Mon, 15 Mar 2021 at 16:21, Vijay Kumar Banerjee <
>>> vijay at rtems.org> wrote:
>>> >> >> >>
>>> >> >> >> Hi Olga,
>>> >> >> >>
>>> >> >> >>
>>> >> >> >> On Mon, Mar 15, 2021 at 8:29 AM Olga Syrbachova <
>>> syrba4eva28 at gmail.com> wrote:
>>> >> >> >> >
>>> >> >> >> > Thank you very much for your reply!
>>> >> >> >> >
>>> >> >> >> > I've built the RTEMS Kernel for erc32. Then I followed this
>>> tutorial https://docs.rtems.org/branches/master/user/start/app.html to
>>> build a "Hello World" application and it works just fine. Then I've tried
>>> to create another application following the steps in the tutorial.
>>> >> >> >> > 1. In $HOME/development/app/ I created a directory "ticker".
>>> >> >> >> > 2. cd ticker
>>> >> >> >> > 3. curl https://waf.io/waf-2.0.19 > waf
>>> >> >> >> >     chmod +x waf
>>> >> >> >> >     git init
>>> >> >> >> >     git submodule add git://git.rtems.org/rtems_waf.git
>>> rtems_waf
>>> >> >> >> > 4. I've copied the files "init.c", "tasks.c", "system.h" from
>>> testsuites/samples
>>> >> >> >> > 5. In the "wscript" I've changed the lines 32 and 34 to
>>> target = 'ticker.exe', source = ['init.c', 'tasks.c']
>>> >> >> >> > 6. ./waf configure --rtems=$HOME/development/rtems/5
>>> --rtems-bsp=sparc/erc32
>>> >> >> >> > 7. and running ./waf next, I get an error. It looks like the
>>> file "tmacros.h", which is included in "system.h", cannot be found.
>>> >> >> >> >
>>> >> >> >> You have changed the "target" and "source" parameters in your
>>> wscript.
>>> >> >> >> You'd also need to modify the "include" parameter and add
>>> relative
>>> >> >> >> path to tmacros.h. For multiple headers, you'll have to add the
>>> paths
>>> >> >> >> as a string with space-separated values or a list like this:
>>> >> >> >> `includes='./ ../ ./path/to/include/'`
>>> >> >> >>
>>> >> >> >>
>>> >> >> >> > What am I doing wrong? Is the way to run other examples
>>> exactly the same as to run a "Hello World" example?
>>> >> >> >> The other examples will also follow a similar wscript structure
>>> but
>>> >> >> >> hello world is the simple one with fewer includes so it's a
>>> good place
>>> >> >> >> to start if you're trying to learn how to make a separate
>>> project with
>>> >> >> >> RTEMS applications using waf.
>>> >> >> >>
>>> >> >> >>
>>> >> >> >> Best regards,
>>> >> >> >> Vijay
>>> >> >> >> > _______________________________________________
>>> >> >> >> > users mailing list
>>> >> >> >> > users at rtems.org
>>> >> >> >> > http://lists.rtems.org/mailman/listinfo/users
>>>
>>
>>
>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virenfrei.
>> www.avast.com
>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>
>> <#m_277508452244861825_m_-8462729502950921950_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
>> _______________________________________________
>> users mailing list
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>
>
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