Thanks to Thomas Helle for pointing this out.
type
make install
- ldconfig
-as root to install libosl, oslfsck and the man page. The default
-installation prefix is /usr/local. Use
+as root to install libosl, oslfsck and the man page. Finally, update
+the library cache by running either
+
+ ldconfig # Linux, *BSD
+
+or
+
+ update_dyld_shared_cache # MacOS
+
+The default installation prefix is /usr/local. Use
make install PREFIX=/somewhere/else