You need to do some Makefile hacking because the existing Perl module for discovering library dependencies (ExtUtils::Liblist::Kid) doesn't work that well on Windows. In all of the Makefiles for XML::LibXML* that are generated when you run perl Makefile.PL, you need to add C:\camelbox\bin\zlib1.dll and C:\camelbox\bin\libxml2.dll to the environment variables LDLOADLIBS and EXTRALIBS. So those environment variables should look something like this when you're done:

EXTRALIBS = C:\camelbox\lib\libmsvcrt.a C:\camelbox\lib\libmoldname.a 
+C:\camelbox\lib\libkernel32.a C:\camelbox\lib\libuser32.a C:\camelbox
+\lib\libgdi32.a C:\camelbox\lib\libwinspool.a C:\camelbox\lib\libcomd
+lg32.a C:\camelbox\lib\libadvapi32.a C:\camelbox\lib\libshell32.a C:\
+camelbox\lib\libole32.a C:\camelbox\lib\liboleaut32.a C:\camelbox\lib
+\libnetapi32.a C:\camelbox\lib\libuuid.a C:\camelbox\lib\libws2_32.a 
+C:\camelbox\lib\libmpr.a C:\camelbox\lib\libwinmm.a C:\camelbox\lib\l
+ibversion.a C:\camelbox\lib\libodbc32.a C:\camelbox\lib\libodbccp32.a
+ C:\camelbox\bin\zlib1.dll C:\camelbox\bin\libxml2.dll
LDLOADLIBS = C:\camelbox\lib\libmsvcrt.a C:\camelbox\lib\libmoldname.a
+ C:\camelbox\lib\libkernel32.a C:\camelbox\lib\libuser32.a C:\camelbo
+x\lib\libgdi32.a C:\camelbox\lib\libwinspool.a C:\camelbox\lib\libcom
+dlg32.a C:\camelbox\lib\libadvapi32.a C:\camelbox\lib\libshell32.a C:
+\camelbox\lib\libole32.a C:\camelbox\lib\liboleaut32.a C:\camelbox\li
+b\libnetapi32.a C:\camelbox\lib\libuuid.a C:\camelbox\lib\libws2_32.a
+ C:\camelbox\lib\libmpr.a C:\camelbox\lib\libwinmm.a C:\camelbox\lib\
+libversion.a C:\camelbox\lib\libodbc32.a C:\camelbox\lib\libodbccp32.
+a C:\camelbox\bin\zlib1.dll C:\camelbox\bin\libxml2.dll
[download]

You can use the 'look' command from within the CPAN shell to download the source to hack it up prior to running 'dmake'. Using the above instructions I was able to get XML::LibXML::Common and XML::LibXML to compile under Camelbox (after installing the other prerequisites of XML::SAX and XML::NamespaceSupport of course).

C:\camelbox\.cpan\build\XML-LibXML-1.69-8uOaSj>perl -e "use XML::LibXM
+L; print $XML::LibXML::VERSION . qq(\n);"
1.69

C:\camelbox\.cpan\build\XML-LibXML-1.69-8uOaSj>
[download]

Thanks, Brian