我已经下载了Windows的QtSDK并安装了它。
我正在使用QtCreator来运行他们的测试程序，但遇到了这个问题：
17:03:30: Running build steps for project keepintouch...
17:03:30: Configuration unchanged, skipping qmake step.
17:03:30: Starting: "C:\QtSDK\mingw\bin\mingw32-make.exe"
C:/QtSDK/mingw/bin/mingw32-make.exe -f Makefile.Debug
mingw32-make.exe[1]: Entering directory `C:/QtSDK/Examples/QtMobility/keepintouch- build-desktop-Qt_4_8_1_for_Desktop_-_MinGW__Qt_SDK__Debug2'
g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_DLL - DQT_GUI_LIB -DQT_CORE_LIB -DQT_HAVE_MMX -DQT_HAVE_3DNOW -DQT_HAVE_SSE -DQT_HAVE_MMXEXT -DQT_HAVE_SSE2 -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAIN - I"..\..\..\Desktop\Qt\4.8.1\mingw\include\QtCore" -I"..\..\..\Desktop\Qt\4.8.1\mingw\include\QtGui" -I"..\..\..\Desktop\Qt\4.8.1\mingw\include" -I"..\..\src\messaging" -I"..\..\src\contacts" -I"..\..\src\contacts\details" -I"..\..\src\contacts\filters" -I"..\..\src\contacts\requests" -I"..\..\..\Desktop\Qt\4.8.1\mingw\include\ActiveQt" -I"debug" -I"..\keepintouch" -I"." -I"..\..\..\Desktop\Qt\4.8.1\mingw\mkspecs\win32-g++" -o debug\addressfinder.o ..\keepintouch\addressfinder.cpp
mingw32-make.exe[1]: Leaving directory `C:/QtSDK/Examples/QtMobility/keepintouch-build- desktop-Qt_4_8_1_for_Desktop_-_MinGW__Qt_SDK__Debug2'
mingw32-make.exe[1]: *** [debug/addressfinder.o] Error 1
mingw32-make.exe: *** [debug] Error 2
17:03:31: The process "C:\QtSDK\mingw\bin\mingw32-make.exe" exited with code 2.
Error while building project keepintouch (target: Desktop)
When executing build step 'Make'