If you are compiling kde strigi analyzers and installing them into a different path where strigi is installed on, you should be aware that strigi won't find your kde analyzers unless you instruct it to.
Let's say your strigi is in /usr, so it is looking for plugins in /usr/lib/strigi and your kde is in /home/kdesvn/installed/ so the KDE strigi analyzers are on /home/kdesvn/installed/lib/strigi.
You should define the environment variable STRIGI_PLUGIN_PATH to /home/kdesvn/installed/lib/strigi:/usr/lib/strigi
That in case you use strigi 0.5.9 that supports more than one path to be defined in STRIGI_PLUGIN_PATH, in case you are using 0.5.7 like Ubuntu users, you are out of luck as STRIGI_PLUGIN_PATH can only be one path, so you might want to define STRIGI_PLUGIN_PATH to /home/kdesvn/installed/lib/strigi and then go there and create symbolic links from all the ones in /usr/lib/strigi.
Anyway if you are using Ubuntu strigi your analyzers won't work because what seems to be a packaging bug.