or download this
C:\TempPerl\XML-LibXML-Common-0.13>perl Makefile.pl INC=-Ic:\libxml2\i
+nclude LIBS=-Lc:\libxml2\lib
enable native perl UTF8
...
http://www.libxml.org/
If you install via RPMs, make sure you also install the -devel
RPMs, as this is where the headers (.h files) are.