Starting with Mosalam's SRV_SLAM.cpp SDL console, as discussed here -  
 
    http://www.surveyor.com/cgi-bin/yabb2/YaBB.pl?num=1221211446
 
I created a stereo version of the console and converted it to C -
 
    http://www.surveyor.com/stereo/stereo.c
 
For those who haven't built this before, you need SDL, SDL_image and SDL_net.
    http://www.libsdl.org/download-1.2.php
    http://www.libsdl.org/projects/SDL_image/
    http://www.libsdl.org/projects/SDL_net/  
 
Here's my compile string for Mac OS/X -
 
gcc -g -O2 -I/usr/local/include/SDL -D_GNU_SOURCE=1 -D_THREAD_SAFE  -Wl,-framework -Wl,Cocoa -Wl,-bind_at_load  -L/usr/local/lib -lSDLmain -lSDL -lSDL_net -lSDL_image -o stereo stereo.c
 
For Linux, I used -
 
gcc -g -O2 -I/usr/include/SDL -L/usr/lib -lSDLmain -lSDL -lSDL_net -lSDL_image -o stereo stereo.c
 
I haven't built a Windows version yet.
 
The console works well except for one problem - it locks up pretty easily on reading the an image through the network, never returning from the SDLNET_TCP_Recv() call (line #161 or #168).  For whatever reason, it runs a lot longer from gdb.  
 
I would like to find a way to query the socket first to see if there is data - that might solve the problem.  Anyhow, I'm open to suggestion.
 

I did discover the SDLNet_CheckSockets(socSet1, TIMEOUT) call in your code, and this seems to have resolved the problem.  I am also comparing image headers to actual number of bytes read, so there is validation of the image, similar to what you did in your parsing code.  It does seem to be handling timeouts and most of the error conditions, though a bad frame is still getting through occasionally and causing a crash, so I need to look a bit more closely at my error checking.
 
My updated version is here -
    http://www.surveyor.com/stereo/stereo.c
 
That's a great idea about changing the cursor.  I do have code to check for mouse clicks ...
 
           case SDL_MOUSEBUTTONUP:
               if(event.button.button == SDL_BUTTON_LEFT){
                   printf("X: %d Y: %d\n", event.button.x, event.button.y);
               }
               break;
 
but at the moment I only print out the mouse coordinates rather than initiating any action.
 
=================
 
update - I made one small change to the control loop which seems to have fixed the image errors - the console has been running continuously for an hour.  the next remaining step is to add error recovery code in case the TCP connection completely breaks

I built it using a codeblocks project and adding the appropriate dependecies.

Well I use codeblocks just for its ease of use and since it is a good IDE. It allows you to even make a new SDL project (which automatically links to the appropriate dlls, if existent in your machine).
 
Alternatively you can check the project's options. I am including two screenshots. One of the linker settings and one of the compilers one's. I have also added wxWidgets library but pay no attention to it.
 
Codeblocks Linker settings
Codeblocks compiler settings
 
But if you really want a good guide, I have something even better than my silly screenshots! LAzy foo's tutorials contain a setting up SDL tutorial for any OS, and any IDE (including command line only).
 
Here is the link
 
You can see that it has guide for many IDEs and command line. Also, note that even though it might not have guides for all SDL libraries you have to do for SDLimg and SDLnet whatever you do with SDLmain.

Just FYI and maybe it will save someone else some time...  
 
I created a makefile to use under Linux and then I have Visual Studio 2008 loaded and downloaded the VC8 versions of SDL 1.2:
 
http://www.libsdl.org/release/SDL-devel-1.2.13-VC8.zip
 
I extracted this to the root of C and then downloaded the VC8 versions of the image and net libraries:
 
http://www.libsdl.org/projects/SDL_image/release/SDL_image-devel-1.2.6-VC8.zip
http://www.libsdl.org/projects/SDL_net/release/SDL_net-devel-1.2.7-VC8.zip
 
I extracted those to an arbitrary location and copied the contents of the include and lib folders to the main library (C:\SDL\SDL-1.2.13\lib and C:\SDL\SDL-1.2.13\include on my machine). I had to add C:\SDL\SDL-1.2.13\lib to my path and then added those locations to the VC++ Project Settings in Visual Studio.
 
If anyone wants the Linux makefile or a Windows version of the base code that hesham released in VS 2008, I'd be happy to email it to them.
 

What version of firmware are you running on the Blackfin ?  There was a bug in the JPEG code for quality = 1 which we fixed a few months ago.  If you update to the latest posted version - http://www.surveyor.com/blackfin/srv-blackfin.090608.zip, it should resolve the problem.

An update to stereo.c has been posted -
    http://www.surveyor.com/stereo/stereo.c  
 
Error checking has been improved and network reads are now interleaved so this version is LOT faster.  Any feedback will be greatly appreciated.
 
Thanks !

There is a slightly newer version of stereo.c - I just uploaded it to
    http://www.surveyor.com/stereo/stereo.c
 
There is a single camera version upon which the stereo code was originally based.  See -
    http://www.surveyor.com/cgi-bin/yabb2/YaBB.pl?num=1221211446
    http://code.google.com/p/client-srv1/source/browse/trunk/client_srv1.cpp
 
I do see occasional lockups with the stereo.c code, so additional error checking on the data stream is probably required.  If you track down the problem, please let us know.