I have created a project on imac, using objective-pascal. When linking the object, and resources it raises the following: > Undefined symbols: > "FPC_RESSYMBOL", referenced from: > FPC_RESLOCATION in PascalLibrary.o > ld: symbol(s) not found > collect2: ld returned 1 exit statu On the mac-fpc forum here is a response I got: â Maybe you have to add -allow_sub_type_mismatches to the linker options. The FPC_RESSYMBOL is located on a resource file that I have linked to my project. Problem is that I do not know where is this switch and how can I solve it.? If you think it is another switch, or where can I find the switch he was talking about, please respond. Regards, Amit