Before building, scan/read http://paraview.org/Wiki/ParaView:Build_And_Install
Look for similar issues in paraview/paraview-developers mailing list
Look in *.cmake for the misconfigured CMake variable:
grep YOUR_VARIABLE_NAME * -rl | grep cmake
gives the name of the *.cmake file.
Look at what the CMake file expects as an input to the YOUR_VARIABLE_NAME. See http://www.cmake.org/Wiki/CMakeMacroParseArguments for CMake macro conventions in order to understand what’s happening in your *.cmake
See http://www.cmake.org/cmake/help/syntax.html for general information on CMake macros and functions