> must set SHLIB_PATH to include the path to libxml2 shared library
> assuming that you used the default:
> export SHLIB=/usr/local/lib
> they did not have +x after they were installed by 'make install'
> and it took me a while to realize that this was my problem
> perl Makefile.PL LIBS='-L/path/to/lib' INC='-I/path/to/include'