问题描述：安装好Qt4.7.4-SDK-MinGW-Windows，再安装Qt提供的IDE QtCreator，运行自带例程后出现编译错误，c:\Program Files\Microsoft Visual Studio\VC98\include/stddef.h:99: error: redeclaration of C++ built-in type 'wchar_t'解决

系统：ubuntu11.10 ，opencv版本2.3.01.  cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local opencv-src路径     make     #遇到下面错误：make[2]: *** [modules/highgui/CMakeFiles/opencv_high