A helpful post about always building c++ projects after being upgraded to VS2010

I also noticed that some of my c++ projects will always be compiled after upgrading my solution to VS2010. Just found this post (Fixing C++ projects that always rebuild) really helpful. It is said the problem is because of some missing header files in the project and MSBUILD rebuilds the project every time. The author also provide a simple sample to check the missing header file, will try with my case.