I have upgraded a solution from VS2010 to VS2012. I did that with other solutions, and it worked fine.
But now when I tried to build the updated solution, the compiler tells me:
Error 1596 error MSB8020: The builds tools for Visual Studio 2010 (Platform Toolset = 'v100') cannot be found. To build using the v100 build tools, either click the Project menu or right-click the solution, and then select "Update VC++ Projects...". Install Visual Studio 2010 to build using the Visual Studio 2010 build tools. C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V110\Microsoft.Cpp.Platform.targets 42 5 praat3
I don't know why the compiler tries to use VS2010.
In the project property pages, I see under "Debug source files" the following entries:
C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\crt\src\
C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\atlmfc\src\mfc\
etc.
Also, if I set the "Platformtoolset" to "Inherit from project above or project standard", it defaults to "v100". I think this is the best hint about what goes wrong here.
By accident I managed to open up the Microsoft.Cpp.Platform.targets file, and I see that v90 and v100 are listed there, but not v110.
Could somebody who uses only VS2012 perhaps have a look at that file?
This is what it looks like for me:
<!--
***********************************************************************************************
Microsoft.Cpp.Platform.targets
WARNING: DO NOT MODIFY this file unless you are knowledgeable about MSBuild and have
created a backup copy. Incorrect changes to this file will make it
impossible to load or build your projects from the command-line or the IDE.
This file defines the steps/targets required to build Visual C++ projects
specifically on x86 platforms.
Copyright (C) Microsoft Corporation. All rights reserved.
***********************************************************************************************
-->
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<ToolsetTargetsFound Condition="Exists('$(VCTargetsPath)\Platforms\$(Platform)\PlatformToolsets\$(PlatformToolset)\Microsoft.Cpp.$(Platform).$(PlatformToolset).targets')">true</ToolsetTargetsFound>
<VCTargetsPathEffective Condition="'$(ToolsetTargetsFound)' == 'true'">$(VCTargetsPath)</VCTargetsPathEffective>
</PropertyGroup>
<!-- Import Before -->
<Import Condition="Exists('$(VCTargetsPath)\Platforms\$(Platform)\ImportBefore')" Project="$(VCTargetsPath)\Platforms\$(Platform)\ImportBefore\*.targets"/>
<!-- Import platform toolset file if found in this version -->
<Import Condition="'$(ToolsetTargetsFound)' == 'true'" Project="$(VCTargetsPath)\Platforms\$(Platform)\PlatformToolsets\$(PlatformToolset)\Microsoft.Cpp.$(Platform).$(PlatformToolset).targets" />
<!-- Try to find the toolset in older versions -->
<Import Condition="'$(ToolsetTargetsFound)' != 'true' and '$(MinSupportedVCTargetsVersion)' != 'v110'" Project="Microsoft.Cpp.Platform.Redirect.targets" />
<PropertyGroup>
<PrepareForBuildDependsOn>PlatformPrepareForBuild;$(PrepareForBuildDependsOn)</PrepareForBuildDependsOn>
</PropertyGroup>
<Target Name="PlatformPrepareForBuild" DependsOnTargets="$(PlatformPrepareForBuildDependsOn)">
<PropertyGroup>
<ConfigurationPlatformExists Condition="'%(ProjectConfiguration.Identity)' == '$(Configuration)|$(Platform)'">true</ConfigurationPlatformExists>
</PropertyGroup>
<!-- Error out when building an platform that is not set in the project file -->
<VCMessage Code="MSB8013" Type="Error" Arguments="$(Configuration)|$(Platform)" Condition="'$(DesignTimeBuild)'!='true' and '$(ConfigurationPlatformExists)' != 'true'"/>
<!-- Check if toolset exists in Visual Studio 2010 or Dev11 -->
<VCMessage Code="MSB8020" Type="Error" Arguments="$(_PlatformToolsetShortNameFor_v100);$(PlatformToolset)" Condition="'$(DesignTimeBuild)'!='true' and '$(ToolsetTargetsFound)' != 'true' and '$(PlatformToolset)' == 'v100'" />
<VCMessage Code="MSB8020" Type="Error" Arguments="$(_PlatformToolsetShortNameFor_v90);$(PlatformToolset)" Condition="'$(DesignTimeBuild)'!='true' and '$(ToolsetTargetsFound)' != 'true' and '$(PlatformToolset)' == 'v90'" />
<VCMessage Code="MSB8020" Type="Error" Arguments="$(PlatformToolset);$(PlatformToolset)" Condition="'$(DesignTimeBuild)'!='true' and '$(ToolsetTargetsFound)' != 'true' and '$(PlatformToolset)' != 'v90' and '$(PlatformToolset)' != 'v100'" />
</Target>
<!-- Import After -->
<Import Condition="'$(ToolsetTargetsFound)' == 'true' and Exists('$(VCTargetsPath)\Platforms\$(Platform)\ImportAfter')" Project="$(VCTargetsPath)\Platforms\$(Platform)\ImportAfter\*.targets"/>
</Project>
Thank you for the help.
The project is set to build with VS2010 compilers (platform toolset). You might have uninstalled VS2010 and got this error.
You can change the platform toolset in project properties->General->Platform Toolset. Change it Visual Studio 2012.
Same error for me recently with VS2017.
Turned out the solution was merely missing a dependent project.
If this is the cause, you should see something like:
Done building project "someproject.vcxproj" -- FAILED.
on the next line after the error message:
error MSB8020: The build tools for Visual Studio 2010 (Platform Toolset = 'v100') cannot be found.
This error can be confusing since your projects may have already been retargeted.
Under "C/C++", there was a lib in "Additional include directories". I did not use this lib, but it was referenced. I removed this lib.
I also deleted all "studio 2010" entries in the registry.
I know this is an old thread, but perhaps this might help somebody else who comes here because of similar issues.
I had a similar problem. VS 2015 Community (MSBuild 14) building a c++ app, wanted to use VS 2010 (v100) tools. It all came down giving msbuild an invalid configuration option. Strange.
So, recheck all those options and parameters.
来源：https://stackoverflow.com/questions/20292810/visual-studio-wants-to-build-with-wrong-platform-toolset