Hi everyone!! I m newbie to Ros platform. now I m trying to build ros-hydro from source on the ubuntu 12.04 precise but I had have a problem dealing with QWidget. This problems output is below, it says those errors

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In file included from /home/mckenzie34/roscatkinws/src/qtguicore/qtguicpp/include/qtguicpp/plugin.h:37:0, from /home/mckenzie34/roscatkinws/src/qtguicore/qtguicpp/src/qtguicpp/pluginbridge.cpp:35: /home/mckenzie34/roscatkinws/src/qtguicore/qtguicpp/include/qtguicpp/plugincontext.h:43:19: fatal error: QWidget: No such file or directory #include ^ In file included from /home/mckenzie34/roscatkinws/src/qtguicore/qtguicpp/include/qtguicpp/plugin.h:37:0, from /home/mckenzie34/roscatkinws/src/qtguicore/qtguicpp/include/qtguicpp/pluginprovider.h:36, from /home/mckenzie34/roscatkinws/src/qtguicore/qtguicpp/include/qtguicpp/compositepluginprovider.h:37, from /home/mckenzie34/roscatkinws/src/qtguicore/qtguicpp/src/qtguicpp/compositepluginprovider.cpp:33: /home/mckenzie34/roscatkinws/src/qtguicore/qtguicpp/include/qtguicpp/plugincontext.h:43:19: fatal error: QWidget: No such file or directory #include ^ compilation terminated. compilation terminated. In file included from /home/mckenzie34/roscatkinws/src/qtguicore/qtguicpp/src/qtguicpp/plugincontext.cpp:33:0: /home/mckenzie34/roscatkinws/src/qtguicore/qtguicpp/include/qtguicpp/plugincontext.h:43:19: fatal error: QWidget: No such file or directory #include ^ compilation terminated. make[2]: *** [src/qtguicpp/CMakeFiles/qtguicpp.dir/pluginbridge.cpp.o] Error 1 make[2]: *** Waiting for unfinished jobs.... make[2]: *** [src/qtguicpp/CMakeFiles/qtguicpp.dir/compositepluginprovider.cpp.o] Error 1 make[2]: *** [src/qtguicpp/CMakeFiles/qtguicpp.dir/plugincontext.cpp.o] Error 1 make[1]: *** [src/qtguicpp/CMakeFiles/qtguicpp.dir/all] Error 2 make: *** [all] Error 2 <== Failed to process package 'qtguicpp': Command '/home/mckenzie34/roscatkinws/install_isolated/env.sh make -j4 -l4' returned non-zero exit status 2

Reproduce this error by running: ==> cd /home/mckenzie34/roscatkinws/buildisolated/qtguicpp && /home/mckenzie34/roscatkinws/installisolated/env.sh make -j4 -l4

Command failed, exiting.

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I made googling a lot for fixed this problem but I have no luck! Whats the problem I dont know. I followed this page while I try to installing that and I prefered "ros-full-desktop-building". also I installed qt4 libraies (gui,core) from indepently this one but doesnt fix it. I hope that you to help me kindly :)

                                                                                                                                                        thanks in advance.

*and also I m sory for my english :(