更新到QT5以后发现CMAKE里边的几个函数变了，加上qt自身也做了一些调整，总之以前qt4下面用CMAKE编译qt工程的那一套不管用了。
然后在按照官方文档写了cmake尝试编译，发现报错：
http://qt-project.org/doc/qt-5.0/qtdoc/cmake-manual.html
CMake Warning at CMakeLists.txt:5 (FIND_PACKAGE):
By not providing "FindQt5Widgets.cmake" in CMAKE_MODULE_PATH this project
has asked CMake to find a package configuration file provided by
"Qt5Widgets", but CMake did not find one.
Could not find a package configuration file provided by "Qt5Widgets" with
any of the following names:
Qt5WidgetsConfig.cmake
qt5widgets-config.cmake
Add the installation prefix of "Qt5Widgets" to CMAKE_PREFIX_PATH or set
"Qt5Widgets_DIR" to a directory containing one of the above files. If
"Qt5Widgets" provides a separate development package or SDK, be sure it has
been installed.
百度了一下，中文基本找不到答案，Google了一下找到答案了，但是该死的我忽略了，后来自己整明白才发现人家给的是完全正确的答案。
http://stackoverflow.com/questions/15639781/how-to-find-qt5-cmake-module-on-windows
我的分析过程如下：
根据错误，可以知道是找不到*Qt5*.cmake这些文件，观察cmake安装目录自带的一组*.cmake，确实没有这些qt5工程编译依赖的*.cmake，于是第一反应是想qt sdk代码里边一定是提供了的。去搜索一下，果不其然，，，
直接拷贝过去了，，，发现问题依旧，，，不过这次提示的*.cmake内部的错误，初步分析了一下和目录结构可能有点关系，，，这时候突然回忆起来上面给出的stackoverflow的帖子，，，
果然设置一下
CMAKE_PREFIX_PATH到qtbase目录，就搞定
初略的过了下cmake的文档，在find_package中提到
1. Search paths specified in cmake-specific cache variables. These are intended to be used on the command line with a -DVAR=value. This can be skipped if NO_CMAKE_PATH is passed.
CMAKE_PREFIX_PATH
CMAKE_FRAMEWORK_PATH
CMAKE_APPBUNDLE_PATH