linux-kernel - Re: [PATCH] libbpf: Use $(SRCARCH) for include path

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Date:   Sun, 29 Dec 2019 21:21:32 -0800
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Shile Zhang <shile.zhang@...ux.alibaba.com>
Cc:     Martin KaFai Lau <kafai@...com>, Song Liu <songliubraving@...com>,
        Yonghong Song <yhs@...com>, Andrii Nakryiko <andriin@...com>,
        bpf <bpf@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] libbpf: Use $(SRCARCH) for include path

On Thu, Dec 26, 2019 at 6:42 PM Shile Zhang
<shile.zhang@...ux.alibaba.com> wrote:
>
> To include right x86 centric include path for ARCH=x86_64.
>
> Signed-off-by: Shile Zhang <shile.zhang@...ux.alibaba.com>
> ---
>  tools/lib/bpf/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile
> index defae23a0169..197d96886303 100644
> --- a/tools/lib/bpf/Makefile
> +++ b/tools/lib/bpf/Makefile
> @@ -59,7 +59,7 @@ FEATURE_USER = .libbpf
>  FEATURE_TESTS = libelf libelf-mmap bpf reallocarray
>  FEATURE_DISPLAY = libelf bpf
>
> -INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(ARCH)/include/uapi -I$(srctree)/tools/include/uapi
> +INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi -I$(srctree)/tools/include/uapi

Is this breaking anything at all right now? I just tried removing
arch-specific include and everything still compiled successfully. So
maybe instead let's just drop arch-specific include path?

>  FEATURE_CHECK_CFLAGS-bpf = $(INCLUDES)
>
>  check_feat := 1
> --
> 2.24.0.rc2
>