Error C1047: Object file created with an older compiler than other objects

Question

I have a project that I\'m building in C++ in Release mode in Visual Studio 2008 SP1 on Windows 7 and when I build it I keep getting:

fatal error C104

Answer 1

It could also be that the offending library was built with a different "Platform Toolset" setting (in Project Properties->General).

Answer 2

With reference to MSDN, this error The object or library file 'file' was created with an older compiler than other objects; rebuild old objects and libraries is caused when object files or libraries built with /LTCG are linked together, but where those object files or libraries are built with different versions of the Visual C++ toolset.
This can happen if you begin using a new version of the compiler but do not do a clean rebuild of existing object files or libraries.
To resolve, rebuild all object files or libraries.

Answer 3

I had this problem but my solution differs:

For me the culprit was that an included external library was compiled with

/GL (=Enable link-time code generation under
      C/C++/ Optimization / Whole Program Optimization) 

using an older visual studio (2005). I rebuild said library in 2005 without /GL and the linker error disappeared in 2008. As MSDN states it has to do with the /LTCG setting, this is set automatically by the /GL flag: http://msdn.microsoft.com/en-us/library/ms173554%28v=vs.80%29.aspx

Answer 4

Two ways:

1.Update to Sp1 to build the lib

2.Please check your build to make sure that Whole Program Optimization is disabled. For a static lib project, go to the property page and change “Configuration Properties->C/C++->Optimization->Whole Program Optimization” to “No”.

Answer 5

I try everything here... and my mistach become of a bad reference and duplicate GUID (between 2010 and 2015 project... the hell of copy/past project)

During project migration from VS2008 to 2010 and 2015. We keep all project version XXX.vxproj (for VS2010) and XXX_2015.vxproj (for VS2015).

And in one of them in 2015 solution we got a reference to 2010 project !

So check REFERENCE... and never duplicate GUID.