[LTP] [PATCH v2] syscalls/mallinfo2_01: Add a basic test for mallinfo2 when setting 2G size

[xuyang2018.jy@fujitsu.com]

Hi Petr
> Hi Xu,
>
>> +++ b/testcases/kernel/syscalls/mallinfo2/Makefile
> ...
>> +
>> +top_srcdir		?= ../../../..
>> +
>> +include $(top_srcdir)/include/mk/testcases.mk
>> +
>> +CFLAGS += -I../mallinfo
> Also this needs to be
> CFLAGS += -I$(abs_srcdir)/../mallinfo
>
You are right. It will fail when out of tree.
> otherwise out of tree builds fail:
> https://github.com/pevik/ltp/actions/runs/941820122
>
> BTW Cyril also suggested recently to drop out of tree support, because build
> system dependencies are broken and fixing it would be much easier when
> supporting only in tree build.
On my test envrionment, I never use out of tree build. So I am fine with 
removing it.
>
> Kind regards,
> Petr