Thanks, Shadow. I tried using perl Makefile.PL LIBS="-LC:/usr/local/Cellar/libxml2/2.9.9_2/lib -llibxml2" INC="-IC:/usr/local/Cellar/libxml2/2.9.9_2/include" but it still doesn't work for me. make test still fails at the #include <libxml/parser.h> line.

I do have a parser.h file; it is located at /usr/local/Cellar/libxml2/2.9.9_2/include/libxml2/libxml/parser.h. I tried using INC="-IC:/usr/local/Cellar/libxml2/2.9.9_2/include/libxml2" and INC="-IC:/usr/local/Cellar/libxml2/2.9.9_2/include/libxml2/libxml" to see if that helped, but nothing I tried worked.