Re: Building tcpdump with static libraries

[Artur Kielak <kielaka () vp pl>]

> On May 27, 2012, at 11:31 PM, Artur Kielak wrote:
>
> > I think than You run older version tcpdump:
>
> You can't use ldd to find out the version of tcpdump; you have to run "tcpdump -h" to get the version of tcpdump.
>
> > This is the answer:
> > libpcap.so.0.8 => /usr/lib/libpcap.so.0.8 (0x002c9000)
> > Linked to old version.
>
> Just because the shared library file happens to end with ".0.8", that doesn't mean that it's version 0.8, or version 
> 0.8.x for any value of x, of libpcap.  I don't know what distribution Ajith is using, but, for example, Debian still 
> calls the shared library "libpcap.so.0.8" even though it's based, presumably, on libpcap 1.1.1 in stable:
>
>       http://packages.debian.org/stable/libs/libpcap0.8
>
> and libpcap 1.2.1 in testing:
>
>       http://packages.debian.org/testing/libs/libpcap0.8
>
> and unstable:
>
>       http://packages.debian.org/unstable/libs/libpcap0.8
>
> and Ubuntu, being Debian-based, does the same.  Presumably the version number didn't change because the binary 
> interface to the library hasn't changed in a backwards-incompatible fashion for ages (new routines and other new 
> capabilities have been added, so the binary of an app built with a *later* shared version of the library won't work 
> with an *earlier* shared version of the library if they use those new routines or capabilities, but, modulo library 
> bugs, the binary of an app built with an *earlier* shared version of the library should work with a *later* shared 
> version of the library).-
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You're right Guy :) Thank you for your comment. 
I wanted to show a simple way to solve the problem Ajith on the latest dev libraries without going into details.


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