[PATCH v7 1/1] selftests: Centralize -D_GNU_SOURCE= to CFLAGS in lib.mk

[Shuah Khan]

On 6/25/24 16:34, Edward Liaw wrote:
> Centralize the _GNU_SOURCE definition to CFLAGS in lib.mk.  Remove
> redundant defines from Makefiles that import lib.mk.  Convert any usage
> of "#define _GNU_SOURCE 1" to "#define _GNU_SOURCE".
> 
> This uses the form "-D_GNU_SOURCE=", which is equivalent to
> "#define _GNU_SOURCE".
> 
> Otherwise using "-D_GNU_SOURCE" is equivalent to "-D_GNU_SOURCE=1" and
> "#define _GNU_SOURCE 1", which is less commonly seen in source code and
> would require many changes in selftests to avoid redefinition warnings.
> 
> Suggested-by: John Hubbard <jhubbard at nvidia.com>
> Signed-off-by: Edward Liaw <edliaw at google.com>
> ---
>   tools/testing/selftests/exec/Makefile             | 1 -
>   tools/testing/selftests/futex/functional/Makefile | 2 +-
>   tools/testing/selftests/intel_pstate/Makefile     | 2 +-
>   tools/testing/selftests/iommu/Makefile            | 2 --
>   tools/testing/selftests/kvm/Makefile              | 2 +-
>   tools/testing/selftests/lib.mk                    | 3 +++
>   tools/testing/selftests/mm/thuge-gen.c            | 2 +-
>   tools/testing/selftests/net/Makefile              | 2 +-
>   tools/testing/selftests/net/tcp_ao/Makefile       | 2 +-
>   tools/testing/selftests/proc/Makefile             | 1 -
>   tools/testing/selftests/resctrl/Makefile          | 2 +-
>   tools/testing/selftests/ring-buffer/Makefile      | 1 -
>   tools/testing/selftests/riscv/mm/Makefile         | 2 +-
>   tools/testing/selftests/sgx/Makefile              | 2 +-
>   tools/testing/selftests/tmpfs/Makefile            | 1 -
>   15 files changed, 12 insertions(+), 15 deletions(-)
> 

Andrew,

I am seeing merge conflicts with mm and exec tests. Might be
better to have you take this through your tree?

Acked-by: Shuah Khan <skhan at linuxfoundation.org>

thanks,
-- Shuah