third_party/llvm-project/llvm/tools/msbuild/llvm-general.xml

<?xml version="1.0" encoding="utf-8"?>
<Rule
      Name="LLVMGeneral"
      DisplayName="LLVM"
      PageTemplate="generic"
      Description="LLVM"
      xmlns="http://schemas.microsoft.com/build/2009/properties">
  <Rule.Categories>
    <Category Name="General" DisplayName="General" Description="General" />
  </Rule.Categories>
  <Rule.DataSource>
    <DataSource Persistence="ProjectFile" Label="Configuration" />
  </Rule.DataSource>

  <StringProperty Name="ClangClExecutable"
                  DisplayName="Clang-CL Executable"
                  Description="Specifies the path to clang-cl.exe."
                  Category="General"
                  Default="$(LLVMInstallDir)bin\clang-cl.exe"
                  Subtype="file">
    <StringProperty.DataSource>
      <DataSource Persistence="ProjectFile" Label="" />
    </StringProperty.DataSource>
  </StringProperty>
</Rule>