linux-kernel - Re: [PATCH] samples/bpf: Fix compilation failure for samples/bpf on Loongarch Fedora

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Date:   Mon, 10 Jul 2023 12:40:50 +0800
From:   Huacai Chen <chenhuacai@...nel.org>
To:     Haoran Jiang <jianghaoran@...inos.cn>
Cc:     linux-kernel@...r.kernel.org, loongarch@...ts.linux.dev,
        llvm@...ts.linux.dev, bpf@...r.kernel.org, trix@...hat.com,
        ndesaulniers@...gle.com, nathan@...nel.org, jolsa@...nel.org,
        haoluo@...gle.com, sdf@...gle.com, kpsingh@...nel.org,
        john.fastabend@...il.com, yhs@...com, song@...nel.org,
        martin.lau@...ux.dev, andrii@...nel.org, daniel@...earbox.net,
        ast@...nel.org, kernel@...0n.name, yangtiezhu@...ngson.cn
Subject: Re: [PATCH] samples/bpf: Fix compilation failure for samples/bpf on
 Loongarch Fedora

Please use LoongArch instead of Loongarch in the title and commit message.

Huacai

On Mon, Jul 10, 2023 at 10:08 AM Haoran Jiang <jianghaoran@...inos.cn> wrote:
>
> When building the latest samples/bpf on Loongarch Fedora
>
>      make M=samples/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@...inos.cn>
> ---
>  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) $(CLANG_SYS_INCLUDES) \
>                 -D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \
>                 -D__TARGET_ARCH_$(SRCARCH) -Wno-compare-distinct-pointer-types \
>                 -Wno-gnu-variable-sized-type-not-at-end \
> --
> 2.27.0
>