Linker Tools Error LNK2005

symbol already defined in object

The given symbol, displayed in its decorated form, was multiply defined.

Tips

One of the following may be a cause:

• The most common cause of this error is accidentally linking with both the single-threaded and multithreaded libraries. Ensure that the application project file includes only the appropriate libraries and that any third-party libraries have appropriately created single-threaded or multithreaded versions.
  
  
• The given symbol was a packaged function (created by compiling with /Gy) and was included in more than one file but was changed between compilations. Recompile all files that include the symbol.
  
  
• The given symbol was defined differently in two member objects in different libraries, and both member objects were used.
  
  
• An absolute was defined twice, with a different value in each definition.

This error is followed by fatal error LNK1169.