Gcov support in Covoar

[Chris Johns]

On 8/7/18 7:51 am, Vijay Kumar Banerjee wrote:
> On 8 July 2018 at 01:08, Joel Sherrill <joel at rtems.org <mailto:joel at rtems.org>>
> wrote:
> 
>     On Sat, Jul 7, 2018, 2:33 PM Chris Johns <chris at contemporary.net.au
>     <mailto:chris at contemporary.net.au>> wrote:
> 
>         On 5 Jul 2018, at 3:07 am, Joel Sherrill <joel at rtems.org
>         <mailto:joel at rtems.org>
>         <mailto:joel at rtems.org <mailto:joel at rtems.org>>> wrote:
>         > On Wed, Jul 4, 2018, 3:06 AM Chris Johns <chrisj at rtems.org <mailto:chrisj at rtems.org>
>         > <mailto:chrisj at rtems.org <mailto:chrisj at rtems.org>>> wrote:
>         >
>         >     How does this fit into the RTEMS Tester tool?
>         >
>         >
>         > If you want to run gcov or lcov on uninstrumented executables, then covoar has
>         > to read gcno and write gcda files. And we have to then run gcov or lcov as
>         > normal.
> 
> 
>     This is just a description of how it works. Not a particular change. 
> 
>         >
>         > It is the path to another report format.
> 
>         I am not sure I understand how we make this work and how we support the
>         user. Is
>         this an option to 'rtems-test'?
> 
>         The aim of the 'rtems-test' command is to provide a documented user
>         interface.
>         Providing direct access to covoar adds more documentation and
>         complication to
>         the test tool. For example how does the user wanting gcov output get to the
>         trace files? The user would need to step into how we implement coverage
>         and that
>         is an interface we will not document and change. 
> 
> 
>     I wouldn't want a user to invoke covoar directly. It is just a coverage
>     reporting variant at this point. I doubt it will ever be the default report
>     format because we have details in the native reports that I don't think you
>     can get ever with gcov. I think the native format is closer to what you
>     would use on an analysis for the highest level of coverage.
> 
> once covoar can generate the gcov reports, we can add it as an option to rtems test.
> we can generate a file with the list of the notes/trace files from the script
> which will work as an
> input to covoar, the user won't have to do anything manually.  

Thank you. I now understand.

Chris