if common.default_platform in ('linux', 'freebsd', 'darwin'):
default_drivers = 'softpipe,failover,svga,i915,i965,trace,identity,llvmpipe'
if common.default_platform in ('linux', 'freebsd', 'darwin'):
default_drivers = 'softpipe,failover,svga,i915,i965,trace,identity,llvmpipe'