anchor.diff:  @cd cmake-%abi%
   @set vsenvloaded=1
   @call "%vsenv%"
  +@set PATH=%mesa%cmake\%abi%\bin\;%PATH%
   @cmake -G "%toolchain%" -DLLVM_TARGETS_TO_BUILD=X86 -DLLVM_ENABLE_RTTI=1 -DLLVM_USE_CRT_RELEASE=MT -DLLVM_ENABLE_TERMINFO=OFF -DCMAKE_INSTALL_PREFIX=%mesa:\=/%llvm/%abi% ..
   @pause
   @msbuild /p:Configuration=Release INSTALL.vcxproj
  
positive.code: :build_dxtn
  @if NOT EXIST "%gcc%" GOTO build_mesa
  @if NOT EXIST "%mesa%dxtn" GOTO build_mesa
  @set /p builddxtn=Do you want to build S3 texture compression library? (y/n):
  @if /i NOT %builddxtn%==y GOTO build_mesa
  @cd "%mesa%dxtn"
  
negative.code: @if NOT EXIST "%vsenv%" @set toolchain=Visual Studio 14
  @if NOT EXIST "%vsenv%" @set vsenv=%VS140COMNTOOLS%..\..\VC\bin\vcvars%minabi%.bat
  @set gcc=%mesa%mingw-w64-%abi%\mingw%minabi%\bin
  @set vsenvloaded=0
  @set dxtnbuilt=0
  @set /p buildllvm=Begin LLVM build. Only needs to run once for each ABI and version. Proceed y/n? 
  @if /I NOT %buildllvm%==y GOTO build_dxtn
  
  