Regardless of this patch, such a libpython3.so regular file cannot exist in Gentoo. Gentoo package manager disallows installation, when it detects file collisions. If I rename libpython3.so of Python 3.2 to libpython3-3.2.so and libpython3.so of Python 3.3 to libpython3-3.3.so, then ldconfig will create libpython3.so symlink pointing to potentially wrong target library. This problem can be avoided by removing soname from libpython3.so, so whole -Wl,-h${soname} could be removed.