Unable to use Qt with Ruby on MacOS

Hi,

I've been willing to do some Ruby using Qt but it seems harder to install it than to use it...

So here's my problem. I had to download and install Qt, no problem there. Next. I had to install qt4-qtruby. Here's the problem begin. To install it I have to use a command line like cmake blablabla something make something make. I hadn't cmake installed on my computer so I download it. IMPOSSIBLE to install it. I had to google all over the word to find that I needed something called Java Developper Package exclusively on the apple.developper site. And of course it's was invisible in the "normal" search.

Final step : compiling/building qt4-qtruby.

I have a nice error where it's speak of automoc4. I search for it in google, read like ALL the pages I had in result and nothing.

Is it simply impossible to use qtruby on mac ? Is there something I do wrong ? Some Path to add ?

Here's my exact error :
shell prompt $> cmake -DCMAKE_INSTALL_PREFIX=/opt/kde4/ . && make && make install
CMake Error at /opt/local/share/cmake-2.8/Modules/FindPackageHandleStandardArgs.cmake:70 (MESSAGE):
Did not find automoc4 (Automoc4Config.cmake, part of kdesupport).
(missing: AUTOMOC4_EXECUTABLE)
Call Stack (most recent call first):
cmake/modules/FindAutomoc4.cmake:56 (find_package_handle_standard_args)
CMakeLists.txt:70 (FIND_PACKAGE)

Sorry for my english it's not my primary langage and I'm quite angry after passing 2hours trying to install something I was think for fun...

thanks in advance for any answer