Your announce https://github.com/open-source-parsers/jsoncpp/releases/tag/1.7.1 said it should support VS2010. I've just tried to build amalgamated sources from trunk ~1.7.2 with 2010 and get compilation errors, related to SecureMemory template:

json\json.h(135): error C2873: 'value_type' : symbol cannot be used in a using-declaration
jsoncpp\json\json.h(197) : see reference to class template instantiation 'Json::SecureAllocator' being compiled