netdev - Re: [PATCH iproute2] testsuite: fix build failure

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Date:   Mon, 24 Oct 2022 10:32:01 +0800
From:   Hangbin Liu <liuhangbin@...il.com>
To:     Andrea Claudi <aclaudi@...hat.com>
Cc:     netdev@...r.kernel.org, stephen@...workplumber.org,
        dsahern@...il.com
Subject: Re: [PATCH iproute2] testsuite: fix build failure

On Sun, Oct 23, 2022 at 05:37:11PM +0200, Andrea Claudi wrote:
> After commit 6c09257f1bf6 ("rtnetlink: add new function
> rtnl_echo_talk()") "make check" results in:
> 
> $ make check
> 
> make -C testsuite
> make -C iproute2 configure
> make -C testsuite alltests
> make -C tools
>     CC       generate_nlmsg
> /usr/bin/ld: /tmp/cc6YaGBM.o: in function `rtnl_echo_talk':
> libnetlink.c:(.text+0x25bd): undefined reference to `new_json_obj'
> /usr/bin/ld: libnetlink.c:(.text+0x25c7): undefined reference to `open_json_object'
> /usr/bin/ld: libnetlink.c:(.text+0x25e3): undefined reference to `close_json_object'
> /usr/bin/ld: libnetlink.c:(.text+0x25e8): undefined reference to `delete_json_obj'
> collect2: error: ld returned 1 exit status
> make[2]: *** [Makefile:6: generate_nlmsg] Error 1
> make[1]: *** [Makefile:40: generate_nlmsg] Error 2
> make: *** [Makefile:130: check] Error 2
> 
> This is due to json function calls included in libutil and not in
> libnetlink. Fix this adding libutil.a to the tools Makefile, and linking
> against libcap as required by libutil itself.
> 
> Fixes: 6c09257f1bf6 ("rtnetlink: add new function rtnl_echo_talk()")
> Signed-off-by: Andrea Claudi <aclaudi@...hat.com>
> ---
>  testsuite/tools/Makefile | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/testsuite/tools/Makefile b/testsuite/tools/Makefile
> index e3e771d7..e0162ccc 100644
> --- a/testsuite/tools/Makefile
> +++ b/testsuite/tools/Makefile
> @@ -2,8 +2,8 @@
>  CFLAGS=
>  include ../../config.mk
>  
> -generate_nlmsg: generate_nlmsg.c ../../lib/libnetlink.c
> -	$(QUIET_CC)$(CC) $(CPPFLAGS) $(CFLAGS) $(EXTRA_CFLAGS) -I../../include -I../../include/uapi -include../../include/uapi/linux/netlink.h -o $@ $^ -lmnl
> +generate_nlmsg: generate_nlmsg.c ../../lib/libnetlink.a ../../lib/libutil.a
> +	$(QUIET_CC)$(CC) $(CPPFLAGS) $(CFLAGS) $(EXTRA_CFLAGS) -I../../include -I../../include/uapi -include../../include/uapi/linux/netlink.h -o $@ $^ -lmnl -lcap
>  
>  clean:
>  	rm -f generate_nlmsg
> -- 
> 2.37.3
> 

Thanks for the fix.

Acked-by: Hangbin Liu <liuhangbin@...il.com>