I get the following message when i try to run the XMP examples in release mode.
XMPFilesStaticRelease.lib(zutil.obj) : error LNK2001: unresolved external symbol _gzflags
MS Visual C++ 2008 express edition
/ Pontus Hulin
this seems to be a breaking change in zlib 1.2.6. Internally we are still using zlib 1.2.5 which doesn't have this problem.
So you can either go back to zlib 1.2.5 or define Z_SOLO under Preprocessor Definitions for XMPFiles. The function gzflags isn't used when zlib is compiled with Z_SOLO.