RTEMS 5 how to run "hello" example

Gedare Bloom gedare at rtems.org
Wed Mar 17 17:48:34 UTC 2021 

On Wed, Mar 17, 2021 at 10:22 AM Olga Syrbachova <syrba4eva28 at gmail.com>
wrote:

> What do you mean "regular README file"? There are 3 of them: README,
> README.Makefile and README.waf. In README there is just a list of examples.
> I tried to follow the README.Makefile instructions, and after running:
>
Thanks I forgot we put those instructions into README.Makefile.


>
> olga at olga-H270M-DS3H:~/development/rtems-examples/hello/hello_world_c$
> RTEMS_MAKEFILE_PATH=${HOME}/development/rtems/5/sparc-rtems5/erc32 make
> clean
>
> and
>
> olga at olga-H270M-DS3H:~/development/rtems-examples/hello/hello_world_c$
> RTEMS_MAKEFILE_PATH=${HOME}/development/rtems/5/sparc-rtems5/erc32 make
>
> there appeared an empty folder "o-optimize" in the examples's directory.
> What's next?
>
> Weird, I'll take a look. We do encourage to try to use waf to build the
examples though, so let's focus on that direction.


> And what do you mean "use ./waf"? When I run ./waf in "rtems-examples",
> it says
>
> olga at olga-H270M-DS3H:~/development/rtems-examples$ ./waf
> The project was not configured: run "waf configure" first!
> olga at olga-H270M-DS3H:~/development/rtems-examples$ waf configure --rtems=$HOME/development/rtems/build/5 \--rtems-tools=$HOME/development/rtems/5 \--rtems-bsps=sparc/erc32
>
>
 ./waf configure --rtems=$HOME/development/rtems/build/5
\--rtems-tools=$HOME/development/rtems/5 \--rtems-bsps=sparc/erc32
 ^

> Command 'waf' not found, did you mean: ...
>
>   command 'paf' from deb libpod-abstract-perl
>   command 'wdf' from deb wit
>   ...
>
> On Wed, 17 Mar 2021 at 16:51, Gedare Bloom <gedare at rtems.org> wrote:
>
>>
>>
>> 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
>>>>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>
>>>>> <#m_-6868087392309282603_m_-8071420466793372504_m_971219196135651785_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_-6868087392309282603_m_-8071420466793372504_m_971219196135651785_m_277508452244861825_m_-8462729502950921950_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
>>>>> _______________________________________________
>>>>> users mailing list
>>>>> users at rtems.org
>>>>> http://lists.rtems.org/mailman/listinfo/users
>>>>
>>>> _______________________________________________
>>> users mailing list
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>>
>>
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