RTEMS 5 how to run "hello" example

Gedare Bloom gedare at rtems.org
Wed Mar 17 15:51:40 UTC 2021 

On Wed, Mar 17, 2021 at 9:11 AM Olga Syrbachova <syrba4eva28 at gmail.com>
wrote:

> 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: ...
>
> Use ./waf



> 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?
>
> You can do either way of building the examples, see the regular README
file for directions on the Makefile approach.


> 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
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>>>
>>> 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
>>>>
>>>
>>>
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>>
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