BUG: Relocation R_X86_64_PC32 against `npy_longdouble_to_PyLong' can not be used when making a shared object; recompile with -fPIC

I can't really share my build setup, but it's not windows like it usually is. I get the error:
```
numpy/core/src/multiarray/scalartypes.o: relocation R_X86_64_PC32 against `npy_longdouble_to_PyLong' can not be used when making a shared object; recompile with -fPIC
```

This looks like it was a bug I introduced in #9971. 