Re: Resend: Issues cross-compiling nmap-4.68

[David Fifield <david () bamsoftware com>]

On Tue, Jul 22, 2008 at 02:21:49PM -0700, Philip A. Prindeville wrote:
> David Fifield wrote:
> > On Tue, Jul 22, 2008 at 08:53:41AM -0700, Philip Prindeville wrote:
> >   
> > > Anyone?  We're trying to get release 0.5 finalized and this is a 
> > > showstopper for us.  Any assistance appreciated.
> > >     
> >
> > Did you try --with-libpcap=included as I suggested in
> > http://seclists.org/nmap-dev/2008/q3/0098.html?
> >
> > --with-libpcap=no is mistaken; Nmap requires libpcap, either it's own
> > copy or a system copy. The test for the system copy is broken with
> > respect to cross-compiling, but using the included copy should avoid
> > that.
> >
> > David Fifield
> >   
>
> Sorry, not on the mailing list, so didn't see it.  But the short answer 
> is "no":
>
> ( \
>    ...
>    ./configure \
>    ...
>                 --with-liblua=included \
>                 --without-zenmap \
>                 --with-libpcap=included \
>         )
> ...
> checking for library containing putmsg... no
> checking for ether_hostton... no
> checking if --disable-protochain option is specified... enabled
> configure: error: pcap type not determined when cross-compiling; use --with-pcap=...
> configure: error: ./configure failed for libpcap
> make: *** [/home/philipp/trunk2/build_i586/nmap-4.68/.configured] Error 1
> [philipp@tosh ~/trunk2]$ 

Okay, thanks. That's at least a different error. This one comes from
libpcap's configure script, not Nmap's. (Notice it's talking about
--with-pcap, not --with-libpcap.) It's looking for something like
--with-pcap=linux or --with-pcap=bpf. "linux" seems correct in this
situation.

So this would work:
        ./configure --with-libpcap=included --with-pcap=linux
except that there appears to be a later check for the Linux version that
will also fail when cross compiling. One way to work around it is with
        ac_cv_linux_vers=X.X.XX ./configure --with-libpcap=included --with-pcap=linux
where "X.X.XX" is the kernel version you'll be compiling against.

The Nmap configure script should be fixed to allow cross compiling, but
you are going to have to deal with these issues anyway, because you have
to cross-compile libpcap at any rate.

David Fifield

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