En utilisant Visual Studio 2012 sur Windows 8 x64, cela est dû au déplacement de msbuild vers .net, mais je n'ai pas encore vu comment le résoudre.
4>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V110\Microsoft.Cpp.Platform.targets(44,5): error MSB8020: The builds tools for v120 (Platform Toolset = 'v120') cannot be found. To build using the v120 build tools, either click the Project menu or right-click the solution, and then select "Update VC++ Projects...". Install v120 to build using the v120 build tools.
2>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V110\Microsoft.Cpp.Platform.targets(44,5):
error MSB8020: The builds tools for v120 (Platform Toolset = 'v120') cannot be found. To build using the v120 build tools, either click the Project menu or right-click the solution, and then select "Update VC++ Projects...". Install v120 to build using the v120 build tools.
5>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V110\Microsoft.Cpp.Platform.targets(44,5): error MSB8020: The builds tools for v120 (Platform Toolset = 'v120') cannot be found. To build using the v120 build tools, either click the Project menu or right-click the solution, and then select "Update VC++ Projects...". Install v120 to build using the v120 build tools.
PlatformToolset, vous pouvez la remplacer comme ceci (VS2013):"\Program Files (x86)\MSBuild\12.0\Bin\MSBuild" .\path\to\MySolution.sln /p:PlatformToolset=v120(si vous êtes dans PowerShell, mettez&avant\Progr..). Pour VS2015, il deviendra"\Program Files (x86)\MSBuild\14.0\Bin\MSBuild"et/p:PlatformToolset=v140et ainsi de suite.