fpic:
`-fPIC` is a flag for the C compiler `gcc` which causes position-independent code to be produced. Position-independent code is important when compiling libraries which are to be dynamically linked, also known as .dll (dynamically-linked libraries) in Windows or .so (shared objects) in Linux. Use this tag if you have problems compiling code when the flag `-fPIC` is in use, or when asking about building binaries with this flag.