The build failed due to multiple definitions of one or more symbols. This error is preceded by error LNK2005.
The /FORCE or /FORCE:MULTIPLE option overrides this error.
也就是"在 Project/Setting/Link/General中的 Project Options: 加入 /FORCE:MULTIPLE即可"
LNK1169: one or more multiply defined symbols found
原文：http://www.cnblogs.com/elautoctrl/p/4729484.html