http://bugs.winehq.org/show_bug.cgi?id=26177
--- Comment #1 from Nikolay Sivov bunglehead@gmail.com 2011-02-20 05:12:26 CST --- Try to define xmlErrorLevel and xmlErrorPtr locally in msxml_private.h header to test if it's the only one stopper. Looks like we don't really need them to be from libxml2, cause they're used only for internal helpers. So if this old version support SAX error callback it could even work as is.
Anyway 2.5.10 is 7.5 years old, we need to build on it of course, but runtime behaviour could be disappointing.