Gcov support in Covoar

[Vijay Kumar Banerjee]

On 8 July 2018 at 01:08, Joel Sherrill <joel at rtems.org> wrote:

>
>
> On Sat, Jul 7, 2018, 2:33 PM Chris Johns <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>> wrote:
>> > On Wed, Jul 4, 2018, 3:06 AM Chris Johns <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.

> The gcov reports have their own positive attributes. Particularly when you
> combine them with something like gcovr which can generate xml.
>
>>
>> Chris
>>
>
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