anchor.diff:  )
   
   :build_with_vs
  -@if %pythonloaded%==0 set PATH=%mesa%Python\;%mesa%Python\Scripts\;%mesa%flexbison\;%PATH%
   @set cleanbuild=n
   @if EXIST build\windows-%longabi% set /p cleanbuild=Do you want to clean build (y/n):
   @if EXIST build\windows-%longabi% echo.
  
positive.code: @if EXIST toolset-%abi%.ini set /p toolset=<toolset-%abi%.ini
  @set vsenv=%vsenv14%
  @if %toolset%==15 set vsenv=%vsenv15%
  @set pythonloaded=0
  
  :build_llvm
  @set /p buildllvm=Begin LLVM build. Only needs to run once for each ABI and version. Proceed (y/n):
  
negative.code: @if NOT "%toolchain%"=="Ninja" set modtoolchainabi=1
  @if %abi%==x64 set modtoolchainabi=%modtoolchainabi%2
  @if %modtoolchainabi%==12 set toolchain=%toolchain% Win64
  @cmake -G "%toolchain%" -DLLVM_TARGETS_TO_BUILD=X86 -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_CRT_RELEASE=MT -DLLVM_ENABLE_RTTI=1 -DLLVM_ENABLE_TERMINFO=OFF -DCMAKE_INSTALL_PREFIX=../%abi% ..
  @echo.
  @pause
  