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From:   Huacai Chen <chenhuacai@kernel.org>
Date:   Mon, 10 Jul 2023 13:54:37 +0800
Message-ID: <CAAhV-H7orsUHDZuwcTUeWYbizcWRG4k_BPy53W7PT_MQ_2SXgw@mail.gmail.com>
Subject: Re: [PATCH v2] samples/bpf: Fix compilation failure for samples/bpf
 on LoongArch Fedora
To:     Haoran Jiang <jianghaoran@kylinos.cn>
Cc:     andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org,
        daniel@iogearbox.net, haoluo@google.com, john.fastabend@gmail.com,
        jolsa@kernel.org, kernel@xen0n.name, kpsingh@kernel.org,
        linux-kernel@vger.kernel.org, llvm@lists.linux.dev,
        loongarch@lists.linux.dev, martin.lau@linux.dev, nathan@kernel.org,
        ndesaulniers@google.com, sdf@google.com, song@kernel.org,
        trix@redhat.com, yangtiezhu@loongson.cn, yhs@fb.com
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Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>

On Mon, Jul 10, 2023 at 1:34=E2=80=AFPM Haoran Jiang <jianghaoran@kylinos.c=
n> wrote:
>
> When building the latest samples/bpf on LoongArch Fedora
>
>      make M=3Dsamples/bpf
>
> There are compilation errors as follows:
>
> In file included from ./linux/samples/bpf/sockex2_kern.c:2:
> In file included from ./include/uapi/linux/in.h:25:
> In file included from ./include/linux/socket.h:8:
> In file included from ./include/linux/uio.h:9:
> In file included from ./include/linux/thread_info.h:60:
> In file included from ./arch/loongarch/include/asm/thread_info.h:15:
> In file included from ./arch/loongarch/include/asm/processor.h:13:
> In file included from ./arch/loongarch/include/asm/cpu-info.h:11:
> ./arch/loongarch/include/asm/loongarch.h:13:10: fatal error: 'larchintrin=
.h' file not found
>          ^~~~~~~~~~~~~~~
> 1 error generated.
>
> larchintrin.h is included in /usr/lib64/clang/14.0.6/include,
> and the header file location is specified at compile time.
>
> Test on LoongArch Fedora:
> https://github.com/fedora-remix-loongarch/releases-info
>
> Signed-off-by: Haoran Jiang <jianghaoran@kylinos.cn>
>
> ---
> v2:
> use LoongArch instead of Loongarch in the title and commit message.
> ---
>  samples/bpf/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
> index 615f24ebc49c..b301796a3862 100644
> --- a/samples/bpf/Makefile
> +++ b/samples/bpf/Makefile
> @@ -434,7 +434,7 @@ $(obj)/%.o: $(src)/%.c
>         @echo "  CLANG-bpf " $@
>         $(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(BPF_EXTRA_CFLAGS=
) \
>                 -I$(obj) -I$(srctree)/tools/testing/selftests/bpf/ \
> -               -I$(LIBBPF_INCLUDE) \
> +               -I$(LIBBPF_INCLUDE) $(CLANG_SYS_INCLUDES) \
>                 -D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-poi=
nter-sign \
>                 -D__TARGET_ARCH_$(SRCARCH) -Wno-compare-distinct-pointer-=
types \
>                 -Wno-gnu-variable-sized-type-not-at-end \
> --
> 2.27.0
>
>