anchor.diff:  @echo.
   @if EXIST %abi% RD /S /Q %abi%
   @MD %abi%
  -@set dxtn=gcc -shared
  -@if %abi%==x86 set dxtn=%dxtn% -m32
  -@set dxtn=%dxtn% -v *.c *.h -I ..\mesa\include -Wl,--dll,--dynamicbase,--enable-auto-image-base,--nxcompat -o %abi%\dxtn.dll
  +@set dxtn=gcc -shared -m%minabi% -v *.c *.h -I ..\mesa\include -Wl,--dll,--dynamicbase,--enable-auto-image-base,--nxcompat -o %abi%\dxtn.dll
   @%dxtn%
   @echo.
   @set dxtnbuilt=1
  
positive.code: )
  @cd %mesa%mesa
  @set openswr=n
  @set sconscmd=python %mesa%Python\%abi%\Scripts\scons.py build=release platform=windows machine=%longabi% libgl-gdi
  @set /p openswr=Do you want to build OpenSWR drivers? (y=yes):
  @echo.
  @if /I "%openswr%"=="y" set sconscmd=%sconscmd% swr=1
  
negative.code: @if EXIST build\windows-%longabi% set /p cleanbuild=Do you want to clean build (y/n):
  @if EXIST build\windows-%longabi% echo.
  @if /I "%cleanbuild%"=="y" RD /S /Q build\windows-%longabi%
  @set PATH=%mesa%Python\;%mesa%Python\Scripts\;%mesa%flexbison\;%PATH%
  @python -m pip install -U mako
  @python -m pip freeze > requirements.txt
  @python -m pip install -r requirements.txt --upgrade
  