macro built error with xorg cvs

[Wang Zhenyu]

When I tried to build xorg cvs, I use suggested version of GNU build tools, 
but I got many configure errors like:
...
./configure: line 19093: syntax error near unexpected token `RANDR,'
./configure: line 19093: `XORG_DRIVER_CHECK_EXT(RANDR, randrproto)'

I'm not sure if configure can't find that macro in xorg-server.m4, or there's
something else wrong? 

zhen