linux-kernel - Re: [PATCH] selftests: net: use LDLIBS instead of LDFLAGS to link against libnuma

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Message-ID: <d3ca6545-2309-9a03-b8b8-52b12e0b914b@kernel.org>
Date:   Wed, 28 Jun 2017 08:19:13 -0600
From:   Shuah Khan <shuah@...nel.org>
To:     Fathi Boudra <fathi.boudra@...aro.org>,
        linux-kselftest@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, SeongJae Park <sj38.park@...il.com>,
        Shuah Khan <shuah@...nel.org>
Subject: Re: [PATCH] selftests: net: use LDLIBS instead of LDFLAGS to link
 against libnuma

On 06/28/2017 05:19 AM, Fathi Boudra wrote:
> reuseport_bpf_numa fails to build with undefined reference:
> 
>  aarch64-linaro-linux-gcc
>  --sysroot=/build/tmp-rpb-glibc/sysroots/hikey -Wall
>  -Wl,--no-as-needed -O2 -g -I../../../../usr/include/  -Wl,-O1
>  -Wl,--hash-style=gnu -Wl,--as-needed -lnuma  reuseport_bpf_numa.c
>  -o
>  /build/tmp-rpb-glibc/work/hikey-linaro-linux/kselftests/4.12-r0/linux-4.12-rc7/tools/testing/selftests/net/reuseport_bpf_numa
>  /tmp/ccfUuExT.o: In function `send_from_node':
>  /build/tmp-rpb-glibc/work/hikey-linaro-linux/kselftests/4.12-r0/linux-4.12-rc7/tools/testing/selftests/net/reuseport_bpf_numa.c:138:
>  undefined reference to `numa_run_on_node'
>  /tmp/ccfUuExT.o: In function `main':
>  /build/tmp-rpb-glibc/work/hikey-linaro-linux/kselftests/4.12-r0/linux-4.12-rc7/tools/testing/selftests/net/reuseport_bpf_numa.c:230:
>  undefined reference to `numa_available'
>  /build/tmp-rpb-glibc/work/hikey-linaro-linux/kselftests/4.12-r0/linux-4.12-rc7/tools/testing/selftests/net/reuseport_bpf_numa.c:233:
>  undefined reference to `numa_max_node'
> 
> Use LDLIBS instead of LDFLAGS to properly link against libnuma.
> 
> Signed-off-by: Fathi Boudra <fathi.boudra@...aro.org>

Did you try this on linux-ksefltest next? It has the fix for this.

thanks,
-- Shuah
> ---
>  tools/testing/selftests/net/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
> index 35cbb4cba410..17c732a19c4c 100644
> --- a/tools/testing/selftests/net/Makefile
> +++ b/tools/testing/selftests/net/Makefile
> @@ -3,7 +3,7 @@
>  CFLAGS =  -Wall -Wl,--no-as-needed -O2 -g
>  CFLAGS += -I../../../../usr/include/
>  
> -reuseport_bpf_numa: LDFLAGS += -lnuma
> +reuseport_bpf_numa: LDLIBS += -lnuma
>  
>  TEST_PROGS := run_netsocktests run_afpackettests test_bpf.sh netdevice.sh
>  TEST_GEN_FILES =  socket
>