Wireshark-dev: Re: [Wireshark-dev] plugins and C++

From: wsgd <wsgd@xxxxxxx>
Date: Sat, 16 Jan 2010 12:09:53 +0100
Thanks for the info.

The solution was very simple : link with g++ (instead of gcc).


Olivier


RUOFF LARS a �crit :
Hi,
Mixing C++ with C code is not that easy, unfortunately.
(Especially in the sense you are interested in, that is include C++ in C code)
Have a look here:
http://www.parashift.com/c++-faq-lite/mixing-c-and-cpp.html

Regards,
Lars
-----Original Message-----
From: wireshark-dev-bounces@xxxxxxxxxxxxx [mailto:wireshark-dev-bounces@xxxxxxxxxxxxx] On Behalf Of wsgd
Sent: mercredi 13 janvier 2010 19:44
To: Developer support list for Wireshark
Subject: Re: [Wireshark-dev] plugins and C++

Hello,

I have a C++ dissector which works on Windows.


I try to generate it on Ubuntu 9.10.

For testing purpose on Ubuntu 9.10, I removed everything except intantiating a C++ object :
ofstream ofs ("wireshark_generic_dissector_traces.txt");

The makefile I use is a copy/paste of another dissector (not a C++ dissector), with only 3 modifications :
- change the source files !
- add .cpp into ".SUFFIXES: .c .cpp .lo .o .obj"
- add .cpp rule ".cpp.lo: ..." which is copy/paste of ".c.lo:"

The generation works, BUT ...

When I launch wireshark, my dissector is NOT loaded with the following error :
Couldn't load module /home/olivier/.wireshark/plugins/generic.so:
/home/olivier/.wireshark/plugins/generic.so:
undefined symbol: _ZTTSt14basic_ofstreamIcSt11char_traitsIcEE

Even if I remove the C++ object (C++ include still here) :
undefined symbol: _ZNSt8ios_base4InitD1Ev


I do not know which options are necessary to fix the problem.
Any idea welcome.


Olivier


Lidwa, Eric (GSFC-582.0)[SGT INC] a �crit :
Good afternoon,

I have written several dissectors so far, one for AOS
(Space Data Link
Protocol) and two for different versions of DEM (Data Exchange Message). The dissectors were implemented as plugins.

I am now implementing dissectors for the payload part of one of the protocols. Without going into details, if I could call or
even compile
some existing C++ code into my dissector it would make my
life a lot
easier.

So here is a question, has anybody been able to write a plugin dissector in C++? I thought I ask before diving into hacking the makefiles. One thing to mention is that I do not care for multi platform support as long as "my" Wireshark runs on the
particular real
time linux I am using.

Regards,

Eric Lidwa

NASA,GSFC Greenbelt, MD


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