linux-kernel - Re: [PATCH v2 5/5] selftests: Drop duplicate -D_GNU

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Date: Wed, 8 May 2024 14:49:58 -0700
From: John Hubbard <jhubbard@...dia.com>
To: Edward Liaw <edliaw@...gle.com>, <shuah@...nel.org>, Mark Brown
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Subject: Re: [PATCH v2 5/5] selftests: Drop duplicate -D_GNU_SOURCE

On 5/7/24 2:38 PM, Edward Liaw wrote:
> -D_GNU_SOURCE can be de-duplicated here, as it is added by
> KHDR_INCLUDES.
> 
> Signed-off-by: Edward Liaw <edliaw@...gle.com>
> ---

Most of the churn in these Makefiles can be avoided if it is possible to
take my recommendation on patch 3/5 [1].

However, as it is, it is correct, so if the above does not happen,
please feel free to add:

Reviewed-by: John Hubbard <jhubbard@...dia.com>


[1] https://lore.kernel.org/all/ec8ab737-a841-4cd5-8ec1-e0a777744262@nvidia.com/

thanks,
-- 
John Hubbard
NVIDIA

>   tools/testing/selftests/futex/functional/Makefile | 2 +-
>   tools/testing/selftests/iommu/Makefile            | 2 --
>   tools/testing/selftests/net/tcp_ao/Makefile       | 2 +-
>   tools/testing/selftests/resctrl/Makefile          | 2 +-
>   4 files changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/tools/testing/selftests/futex/functional/Makefile b/tools/testing/selftests/futex/functional/Makefile
> index a392d0917b4e..f79f9bac7918 100644
> --- a/tools/testing/selftests/futex/functional/Makefile
> +++ b/tools/testing/selftests/futex/functional/Makefile
> @@ -1,6 +1,6 @@
>   # SPDX-License-Identifier: GPL-2.0
>   INCLUDES := -I../include -I../../ $(KHDR_INCLUDES)
> -CFLAGS := $(CFLAGS) -g -O2 -Wall -D_GNU_SOURCE -pthread $(INCLUDES) $(KHDR_INCLUDES)
> +CFLAGS := $(CFLAGS) -g -O2 -Wall -pthread $(INCLUDES) $(KHDR_INCLUDES)
>   LDLIBS := -lpthread -lrt
>   
>   LOCAL_HDRS := \
> diff --git a/tools/testing/selftests/iommu/Makefile b/tools/testing/selftests/iommu/Makefile
> index 32c5fdfd0eef..fd6477911f24 100644
> --- a/tools/testing/selftests/iommu/Makefile
> +++ b/tools/testing/selftests/iommu/Makefile
> @@ -2,8 +2,6 @@
>   CFLAGS += -Wall -O2 -Wno-unused-function
>   CFLAGS += $(KHDR_INCLUDES)
>   
> -CFLAGS += -D_GNU_SOURCE
> -
>   TEST_GEN_PROGS :=
>   TEST_GEN_PROGS += iommufd
>   TEST_GEN_PROGS += iommufd_fail_nth
> diff --git a/tools/testing/selftests/net/tcp_ao/Makefile b/tools/testing/selftests/net/tcp_ao/Makefile
> index 522d991e310e..c608b1ec02e6 100644
> --- a/tools/testing/selftests/net/tcp_ao/Makefile
> +++ b/tools/testing/selftests/net/tcp_ao/Makefile
> @@ -26,7 +26,7 @@ LIB	:= $(LIBDIR)/libaotst.a
>   LDLIBS	+= $(LIB) -pthread
>   LIBDEPS	:= lib/aolib.h Makefile
>   
> -CFLAGS	:= -Wall -O2 -g -D_GNU_SOURCE -fno-strict-aliasing
> +CFLAGS	:= -Wall -O2 -g -fno-strict-aliasing
>   CFLAGS	+= $(KHDR_INCLUDES)
>   CFLAGS	+= -iquote ./lib/ -I ../../../../include/
>   
> diff --git a/tools/testing/selftests/resctrl/Makefile b/tools/testing/selftests/resctrl/Makefile
> index 2deac2031de9..5073dbc96125 100644
> --- a/tools/testing/selftests/resctrl/Makefile
> +++ b/tools/testing/selftests/resctrl/Makefile
> @@ -1,6 +1,6 @@
>   # SPDX-License-Identifier: GPL-2.0
>   
> -CFLAGS = -g -Wall -O2 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE
> +CFLAGS = -g -Wall -O2 -D_FORTIFY_SOURCE=2
>   CFLAGS += $(KHDR_INCLUDES)
>   
>   TEST_GEN_PROGS := resctrl_tests