Does it compile with -std=c89? Looking at your example though, I expect it assumes 32 bit when doing some pointer manipulation. I also assume you are building

Does it compile with -std=c89? Looking at your example though, I expect it assumes 32 bit when doing some pointer manipulation. I also assume you are building it now on a 64 bit system. That is likely the issue. You will need to look at the pointer handling and port to 64 bit as required.