Re: [PATCH v4 bpf-next 1/4] selftests/bpf: compile progs with -D__TARGET_ARCH_$(SRCARCH)

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On Thu, Jul 11, 2019 at 7:32 AM Ilya Leoshkevich <iii@xxxxxxxxxxxxx> wrote:
>
> This opens up the possibility of accessing registers in an
> arch-independent way.
>
> Signed-off-by: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
> ---
>  tools/testing/selftests/bpf/Makefile | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
> index 2620406a53ec..ad84450e4ab8 100644
> --- a/tools/testing/selftests/bpf/Makefile
> +++ b/tools/testing/selftests/bpf/Makefile
> @@ -1,4 +1,5 @@
>  # SPDX-License-Identifier: GPL-2.0
> +include ../../../scripts/Makefile.arch
>
>  LIBDIR := ../../../lib
>  BPFDIR := $(LIBDIR)/bpf
> @@ -138,7 +139,8 @@ CLANG_SYS_INCLUDES := $(shell $(CLANG) -v -E - </dev/null 2>&1 \
>
>  CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \
>               $(CLANG_SYS_INCLUDES) \
> -             -Wno-compare-distinct-pointer-types
> +             -Wno-compare-distinct-pointer-types \
> +             -D__TARGET_ARCH_$(SRCARCH)

samples/bpf/Makefile uses $(ARCH), why does it work for samples?
Should we update samples/bpf/Makefile as well?

>
>  $(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline
>  $(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline
> --
> 2.21.0
>



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