anchor.diff:  @if /i NOT "%buildmesa%"=="y" GOTO exit
   @echo.
   @set LLVM=%mesa%llvm\%abi%
  -@if NOT EXIST "%LLVM%" (
  +@if NOT EXIST %LLVM% (
   @echo Could not find LLVM, aborting mesa build.
   @echo.
   @pause
   @GOTO exit
   )
  -@cd "%mesa%mesa"
  +@cd %mesa%mesa
   @set /p openswr=Do you want to build OpenSWR drivers? (y=yes):
   @set buildswr=0
   @if /i "%openswr%"=="y" set buildswr=1
  
positive.code: :build_with_mingw
  @set mingw=n
  @set mingwtest=0
  @if EXIST "%gcc%" set mingwtest=1
  @set msys2=%mesa%msys64\msys2_shell.cmd
  @if EXIST "%msys2%" set mingwtest=%mingwtest%2
  @if %mingwtest%==12 set /p mingw=Do you want to build with MinGW-W64 instead of Visual Studio (y=yes):
  @if %dxtnbuilt%==0 set PATH=%gcc%\;%PATH%
  @set mesatoolchain=crossmingw
  @copy "%gcc%\%altabi%-w64-mingw32-gcc-ar.exe" "%gcc%\%altabi%-w64-mingw32-ar.exe"
  @copy "%gcc%\%altabi%-w64-mingw32-gcc-ranlib.exe" "%gcc%\%altabi%-w64-mingw32-ranlib.exe"
  @call "%msys2%" -use-full-path
  pacman -Syu
  pacman -S python2
  
negative.code: @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
  @echo.
  @cd %mesa%llvm
  @if EXIST %abi% RD /S /Q %abi%
  @if EXIST cmake-%abi% RD /S /Q cmake-%abi%
  @md cmake-%abi%
  