Should be built as Position Independent Code

[philipp2100]

Since this a library, you should also add -fPIC here. Maybe also in other places; for me this suffices, but I'm not familiar with your build system and how other users might use it.

https://github.com/sahlberg/libnfs/blob/030814506e529ef1f1572c7b6e3fc2e4c10cb544/packaging/RPM/libnfs.spec.in#L50