Using kdevelop4
From Yade
If for some reasons this file does not work for you, you can easily generate a new Yade project after deleting the current yade.kdev4. Start empty kdevelop sesion and "import" a project, then select the yade directory, but don't give any "project" file *.kdev4 (the old yade.kdevelop project for kdev3 cannot be read either), as it will have to be generated automaticaly. Select project type "custom build", then go to project option and set build executable "scons". At this point, you can compile from kdevelop, get nice error output with links to where the errors are, etc. There is also a rich class and member description, auto-completion, display of functions signatures,... as shown in screenshots.
Also check page on debugging.