libxml2 compile error

OS: Windows 10 Compiler: VS 2019 community edition Error:

3>C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targets(231,5): warning MSB8064: Custom build for item "C:\srcs\VTK\ThirdParty\libxml2\vtklibxml2\CMakeLists.txt" succeeded, but specified dependency "c:\srcs\vtk\thirdparty\libxml2\vtklibxml2\cmakelists.txt" does not exist. This may cause incremental build to work incorrectly.
3>C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targets(231,5): warning MSB8064: Custom build for item "C:\srcs\VTK\ThirdParty\libxml2\vtklibxml2\CMakeLists.txt" succeeded, but specified dependency "c:\srcs\vtk\thirdparty\libxml2\vtklibxml2\config_cmake.h.in" does not exist. This may cause incremental build to work incorrectly.
3>C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targets(231,5): warning MSB8064: Custom build for item "C:\srcs\VTK\ThirdParty\libxml2\vtklibxml2\CMakeLists.txt" succeeded, but specified dependency "c:\srcs\vtk\thirdparty\libxml2\vtklibxml2\include\libxml\xmlversion.h.in" does not exist. This may cause incremental build to work incorrectly.
3>C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targets(231,5): warning MSB8064: Custom build for item "C:\srcs\VTK\ThirdParty\libxml2\vtklibxml2\CMakeLists.txt" succeeded, but specified dependency "c:\srcs\vtk\thirdparty\libxml2\vtklibxml2\libxml2platformtests.cmake" does not exist. This may cause incremental build to work incorrectly.
3>DOCBparser.c
3>C:\srcs\VTK\ThirdParty\libxml2\vtklibxml2\libxml.h(92,71): error C2061: syntax error: identifier 'LIBXML_ATTR_FORMAT'
3>C:\srcs\VTK\ThirdParty\libxml2\vtklibxml2\libxml.h(92,71): error C2059: syntax error: ';'

I checked this file and could not find the offending piece of code 'LIBXML_ATTR_FORMAT' in older versions. Has something changed?