LibraryPath + IncludePath

[Vos]

неверные пути

Note: If your LLVM version is not 7.0, please change $(LLVMInstallDir)\lib\clang\7.0\ in each Toolset.props to appropriate value.

...
исправить на \7.0.0\

  <PropertyGroup>
....
    <IncludePath>$(LLVMInstallDir)\lib\clang\7.0.0\include;$(IncludePath)</IncludePath>
    <LibraryPath>$(LLVMInstallDir)\lib\clang\7.0.0\lib\windows;$(LibraryPath)</LibraryPath>
  </PropertyGroup>

[Zufu Liu]

Fixed in 396955c.