title: Unable to Compile a Qt project in qtcreator
body: <p>I am unable to compile a simple Qt project (an example with the mainwindow). I tried it via command shell and also on QtCreator. first qmake should create makefile with the command rule uic to translate as simple as it should my ui to a .h.</p>
  
  <p>Qt Creator indicating the below warning / error messages on the console.</p>
  
  <pre><code>09:06:30: Running steps for project untitled...
  09:06:30: Starting: "D:\QT\qt-everywhere-opensource-src-5.6.0\qtbase\bin\qmake.exe" C:\workspace_llb_27-05-2016\untitled\untitled.pro -r -spec win32-g++
  09:06:32: The process "D:\QT\qt-everywhere-opensource-src-5.6.0\qtbase\bin\qmake.exe" exited normally.
  09:06:32: Starting: "C:\mingw\mingwx64_481r0-sjlj-rev2\bin\mingw32-make.exe" 
  C:/mingw/mingwx64_481r0-sjlj-rev2/bin/mingw32-make -f Makefile.Debug
  mingw32-make[1]: Entering directory 'C:/build_untitled_Qt_5_6_0_Built_by_mingwx64_481r0_sjlj_rev2_Debug'
  /C/build_untitled_Qt_5_6_0_Built_by_mingwx64_481r0_sjlj_rev2_Debug/uic_wrapper.sh ../workspace_llb_27-05-2016/untitled/mainwindow.ui -o ui_mainwindow.h
  Makefile.Debug:318: recipe for target 'ui_mainwindow.h' failed
  process_begin: CreateProcess(NULL, /C/build_untitled_Qt_5_6_0_Built_by_mingwx64_481r0_sjlj_rev2_Debug/uic_wrapper.sh ../workspace_llb_27-05-2016/untitled/mainwindow.ui -o ui_mainwindow.h, ...) failed.
  make (e=2): Le fichier spécifié est introuvable.
  
  mingw32-make[1]: *** [ui_mainwindow.h] Error 2
  mingw32-make[1]: Leaving directory 'C:/build_untitled_Qt_5_6_0_Built_by_mingwx64_481r0_sjlj_rev2_Debug'
  Makefile:34: recipe for target 'debug' failed
  mingw32-make: *** [debug] Error 2
  09:06:33: The process "C:\mingw\mingwx64_481r0-sjlj-rev2\bin\mingw32-make.exe" exited with code 2.
  Error while building/deploying project untitled (kit: Qt 5.6.0 (Built by mingwx64_481r0-sjlj-rev2))
  When executing step "Make"
  </code></pre>
  
  <p>Thanks</p>