Re: Cross-compile problem (continued)

[gero@gkminix.han.de (Gero Kuhlmann)]

Hello,

Ross Golder <rossg@cpd.co.uk> wrote:
> And the output of the 'make' :-
> [... looks good so far ...]
> mknbi.o: In function 'main':
> mknbi.o(.text+0xe13): undefined reference to '__inet_ntoa'
> make[1]: *** [mknbi] Error 1
> make: *** [all] Error 1
>
> I've had this error somewhere before, and resolved it, but I can't think
> how. Excuse my novice status, but am I correct in assuming that the
> linker is attempting to link in '__inet_ntoa' from an external library,
> but not finding it. What library does this function usually reside in?

You are right that __inet_ntoa should be somewhere in the libraries. Exact-
ly what library depends on the system you are working with. On my system
(with glibc-2.0) it's in the standard libc, but on SCO ODT for example
it's in libsocket. In order to find it you can use the 'nm' command. Just
run 'nm libc.a' or any other library, and it prints you all the symbols defined
in the library. Good candidates for libraries having 'inet_ntoa' are:

  libc.a
  libnsl.a
  libsocket.a
  libnet.a

nd just one hint when running 'nm': it will print 'U' for all undefined
symbols (which have to be resolved lateron when running the linker), and
'T' for symbols defined in the library. Therefore you will want to look
for a 'inet_ntoa' symbol with a 'T' in front.

Alternatively, you can undefine HAVE_ARPA_INET_H in config.h after running
configure. This will disable IP-address support in mknbi-linux, which is
only necessary if you want to use the '-i' option with internet addresses.

gero.

--
All I ask of my body is that it carry around my head.
  - Thomas Alva Edison
--
Gero Kuhlmann, Hannover     0511/6497525 (Voice)        gero@gkminix.han.de