make check (testing): how to clean old test results?

[U.Mutlu]

U.Mutlu wrote on 07/17/2018 07:00 PM:
> U.Mutlu wrote on 07/17/2018 05:34 PM:
>> Jonathan Wakely wrote on 07/17/2018 05:08 PM:
>>> On Tue, 17 Jul 2018 at 15:40, U.Mutlu wrote:
>>>>
>>>> It seems "make check" appends new results to existing results, right?
>>>
>>> No.
>>>
>>>> Is there a make target for cleaning the results of the previous "make check"
>>>> run(s)?
>>>
>>> They should be replaced by a new run.
>>
>> Hmm. will try again.
>
> As suspected: in the report it lists also the results of old test runs.
> Ie. my last test run was this:
>    make -j5 -k check-gcc-c RUNTESTFLAGS="--target_board=mips-sim-idt64/-O3"
>
> But the report has also entries about "g++", but which shouldn't occur
> with this test ("check-gcc-c").
>
> The screen output contains only "=== gcc Summary ==="
>
> But the report starts so:
>
> ########
> LAST_UPDATED: Mon Jul 16 19:30:10 UTC 2018 (revision 262747)
>
> Target is mipsisa64-unknown-elf
> Host   is x86_64-pc-linux-gnu
>
>                  === g++ tests ===
>
>
> Running target mips-sim-idt64/-O3
> FAIL: g++.dg/compat/abi/bitfield1 cp_compat_x_tst.o-cp_compat_y_tst.o execute
> ...
> #######
>
> Ie. even the "LAST UPDATED" is that of yesterday, as it rather should show
> current datetime.
> But: I used the string "mips-sim-idt64/-O3" only in this last test.
> So, something's fishy here; it IMHO indeed seems to merge the old results with
> the new results.
> I'll take a deeper look...


SOLVED:
If one wants to delete the results of old/prev test runs,
then one has to delete all the *.sum files under the build dir before starting 
the new test(s):

   cd build

   # delete old *.sum files of prev test runs:
   touch dummy.sum
   rm -f $(find . -name "*.sum*" -print)

   make -j5 -k check-gcc-c RUNTESTFLAGS="--target_board=mips-sim-idt64/-O3"
   ...