anchor.diff:        echo Available options:
         echo   --sync-glslang      just pull glslang_revision
         echo   --sync-LunarGLASS   just pull LunarGLASS_revision
  +	  echo   --sync-spirv-tools  just pull spirv-tools_revision
         echo   --build-glslang     pulls glslang_revision, configures CMake, builds Release and Debug
         echo   --build-LunarGLASS  pulls LunarGLASS_revision, configures CMake, builds Release and Debug
  -      echo   --all               sync and build both glslang and LunarGLASS
  +      echo   --build-spirv-tools pulls spirv-tools_revision, configures CMake, builds Release and Debug
  +      echo   --all               sync and build glslang, LunarGLASS, spirv-tools
         goto:finish
      )
   
      set sync-glslang=0
      set sync-LunarGLASS=0
  +   set sync-spirv-tools=0
      set build-glslang=0
      set build-LunarGLASS=0
  +   set build-spirv-tools=0
      set check-glslang-build-dependencies=0
      set check-LunarGLASS-fetch-dependencies=0
      set check-LunarGLASS-build-dependencies=0
  
positive.code:    )
     svn update -r %LUNARGLASS_REVISION_R325
     svn revert -R .
  goto:eof
  
  :build_glslang
  
negative.code: @echo off
  REM Update source for glslang, LunarGLASS, spirv-tools
  
  setlocal EnableDelayedExpansion
  set errorCode=0
  