Wireshark-dev: Re: [Wireshark-dev] Naive attempt to dissect.

From: Jeff Morriss <jeff.morriss.ws@xxxxxxxxx>
Date: Tue, 07 Oct 2008 13:23:52 -0400

Bruno Hivert wrote:

Hello,

I’m trying some very simple decoding for gsm-map packets. It’s very simple, because the dissector I need already exists, it’s just not called in the proper context.

If you have a look at the attached diff file, you’ll understand what I’m trying to do.

However, I cannot even try this apparently trivial-as-an-API-call modification, because it does not compile.

[...]

epan/.libs/libwireshark.so: undefined reference to `de_bearer_cap'

[...]

What am I doing wrong, and where can I express the dependency without pulling way to many things in ?

The basic problem is that de_bearer_cap() is declared as static in packet-gsm_a_dtap.c: that means no other module (.c file) can use it. If you remove the keyword "static" it will at least link. (Of course it would also be better to have a prototype in a header file, etc.)