!!!!!ATTENTION!!!!! Before starting the build you may need to setup the KDE4 environment variables. To do this open Project->Project Options and then look at the "Run" and the "Make" pages. Each of these two has an environment variables widget in which you have to fill in the right values for the variables already listed. After setting up the variables you'll also need to run cmake inside the build directory. This can not be done by tdevelop as a KDE4 environment is needed when running cmake to find KDE4. Open the integrated konsole and change to the build subdirectory. Then setup a KDE4 environment and run "cmake ../". More information how to setup a KDE4 development environment can be found on http://techbase.kde.org/Getting_Started/Increased_Productivity_in_KDE4_with_Scripts