I cooked up a liblouis m4 script the other day that includes options to
point "configure" at a particular liblouis installation (since I do not
have liblouis installed as a package). Maybe lbilouisudtml needs a
similar approach rather than necessarily requiring liblouis to be
installed as a package?
For a description of the software, to download it and links to
project pages go to http://liblouis.org