Re: ipvsadm git head not compiling on RHEL6

[Jesper Dangaard Brouer <jbrouer@redhat.com>]

On Thu, 08 Aug 2013 10:27:05 +0200
Daniel Borkmann <dborkman@redhat.com> wrote:

> On 08/08/2013 10:19 AM, Jesper Dangaard Brouer wrote:
> >
> > I noticed that I get an compile error, when compiling ipvsadm
> > git HEAD 1ea1f41f4 on RHEL6.4.
> >
> > Compile Error:
> >
> > gcc -Wall -Wunused -Wstrict-prototypes -g -o ipvsadm ipvsadm.o config_stream.o dynamic_array.o libipvs/libipvs.a -lpopt -lnl
> > libipvs/libipvs.a(libipvs.o): In function `ipvs_nl_send_message':
> > /home/jbrouer/git/ipvsadm/libipvs/libipvs.c:76: undefined reference to `nl_socket_alloc'
> > /home/jbrouer/git/ipvsadm/libipvs/libipvs.c:91: undefined reference to `nl_socket_free'
> > /home/jbrouer/git/ipvsadm/libipvs/libipvs.c:107: undefined reference to `nl_socket_free'
> > /home/jbrouer/git/ipvsadm/libipvs/libipvs.c:112: undefined reference to `nl_socket_free'
> > collect2: ld returned 1 exit status
> > make: *** [ipvsadm] Error 1
> >
> > I'll investigate, but hints would be appreciated ;-)
> 
> Did you try using libnl3? (Migrating to libnl3 would be better anyway as
> distributions try to get rid of supporting libnl.)

Nope, I'm using the default libnl coming with RHEL6.4.

Its not really an option to import/change to libnl3 for RHEL6. But you
could try poking Thomas Graf ;-)


> I think sometime in libnl*, nl_handle_{alloc,free} was changed to
> nl_socket_{alloc,free}.

Yes, I can see that your libnl3 commit f48e93c1 (libipvs: libnl3: fix
compilation error) caused this issue.


> Maybe try changing include locations and libs that are linked against
> to libnl3.

We officially support ipvsadm for RHEL6, so its not an option to link
against libnl3, as we need to supply an official package... else we/I
would need to have an adaption patch in the RPM (I were looking to
rebase RHEL6 to use the upcoming ipvsadm release).

-- 
Best regards,
  Jesper Dangaard Brouer
  MSc.CS, Sr. Network Kernel Developer at Red Hat
  Author of http://www.iptv-analyzer.org
  LinkedIn: http://www.linkedin.com/in/brouer