@<:@default=r300,r600,svga,swrast@:>@])],
[with_gallium_drivers="$withval"],
[with_gallium_drivers="$GALLIUM_DRIVERS_DEFAULT"])
@<:@default=r300,r600,svga,swrast@:>@])],
[with_gallium_drivers="$withval"],
[with_gallium_drivers="$GALLIUM_DRIVERS_DEFAULT"])