Succeeded to build a set of 5 classes from the gp package and the classes that they depend on (around 20 classes) with minimal changes on the generated code.
Added for compiling all the classes from the gp package and the packages it depends on (MMgt, Quantity, Standard, TColGp, TCollection, TColStd) a total of 731 files and started compiling and adjusting the generator. It seems that there are 3 types of errors that need adjustment at the generator.
Hope to finish adjusting tomorrow the code generator and build the packages. After that will make a test project to see if it the wrappers work well.