[Part 1]

- usualy cflags for library are obtained through pkg-config, which includes headers search location, so headers can be located anywhere and be versioned. As long as config is versioned. Although usually includes(-dev packages, if talking in debianisms) are installed unversioned for "default" version
- why would you even version static libraries? They are either in binary or not.
- libbullshit.so is symlink to default version. Binaries can specify exact version.