My freind Dimitri was not able to post his message. I am working with him on this. _______________________________________________________________________________ Hello, as part of a Seminar in the University im trying to build the PharoVM. According to the README file here ([1]) I was able to generate and to build the VM successfully. Now I would like to build the VM without Cog or Stack-to-Register optimizations... The problem here is, that I could not find any config class (which is a subclass of CPlatformConfig), that provides the right configurations and allows to build the VM without errors. I have tried to modify PharoUnixConfig(because it was the default config class), but unfortunately the build failes when the compiler tries to compile gcc3x-interp.c. Could somebody help me with this problem? How should I configure my own Config class? Basically our Group tries to implement an object table in Pharo and we want to use (and modify) the basic Interpreter class. [1] https://github.com/pharo-project/pharo-vm Best regards, Dimitri Korsch