Make install fails when issued twice

[no-sense]

"make install" fails when installing a second time, for instance after making a change. The error is:
ln -s libutempter.so.1.2.1 sysroot_path_left_lout/usr/lib/libutempter.so.0
ln: failed to create symbolic link 'sysroot_path_left_out/usr/lib/libutempter.so': File exists
make: *** [Makefile:86: install] Error 1

Issues is present in the latest release, libutempter-1.2.1-alt1

It can be easily fixed by applying the attached patch.
libutempter_patch.txt