Builds with -fPIC when --enable-static is used

[yurivict]

-fPIC should only be used for shared libraries.
-fPIC reduces code performance therefore defearing the purpose of static libraries.

Version 6.3.0
OS: FreeBSD 13

[StefanBruens]

-fPIC is also correct for static libraries, and required when you want to build a position-independent executable.

And when you build shared libraries with LTO (link-time-optimization), you typically end up with faster code due to cross-translation-unit optimization.