debian:~/dev# cd expat-2.0.1
debian:~/dev/expat-2.0.1# LDFLAGS="-R$ORIGIN/../lib" ./configure --prefix=/root/perl5
debian:~/dev/expat-2.0.1# make && make install
debian:~/dev/expat-2.0.1# cd ..

debian:~/dev# cpan
cpan[1]> look XML::Parser
debian:~/.cpan/build/XML-Parser-2.41-dCfdKY# export LD_LIBRARY_PATH=/root/perl5/lib
debian:~/.cpan/build/XML-Parser-2.41-dCfdKY# perl Makefile.PL EXPATLIBPATH=/root/perl5/lib EXPATINCPATH=/root/perl5/include
debian:~/.cpan/build/XML-Parser-2.41-dCfdKY# make && make install
debian:~/.cpan/build/XML-Parser-2.41-dCfdKY# exit