With some help, I got the kfile stream analyzer for Strigi working. This means that Strigi will now index the meta data fields defined by the kfile-chemical plugins. The problem why it was not working earlier, was that it segfaulted on every creation of KDE classes. That’s something I really hate about C/C++: the lack of stack traces, though valgrind was helpful. It turned out that adding the below line fixed all.