Inconsistent minimum jsoncpp version
VTK currently requires jsoncpp version 0.7.0.
A recent commit to ParaView, however, uses Json::Value::nullSingleton()
, which was only added in jsoncpp 1.7.3.
Ideally, I'd like to see the minimum required version of jsoncpp stay low (Ubuntu 16.04 ships with jsoncpp 1.7.2, RHEL 7 has 0.10.5). At a minimum, ParaView should check the jsoncpp version and fail during the configure step.