Can't build documentation with Doxygen

[AveryBibeau]

I'm trying to build the offline documentation for SFML but can't get Doxygen and CMake working. The CMake output says that it successfully found Doxygen.exe 1.8.4 in my Program Files but under the DOXYGEN_HHC_PROGRAM it says DOXYGEN_HHC_PROGRAM-NOTFOUND. The Build/doc/html folder only contains the doxygen.css file from the SFML source and nothing else. What should I be doing to get it to properly build?

[Laurent]

DOXYGEN_HHC_PROGRAM must be the path to the HTML Help Compiler (downloadable from Microsoft). This is needed only if you build the CHM documentation, you can ignore it if you compile the HTML version only.