how to build Xorg7.1 on 64-bit system

[soararing]

Hi,    I download xorg7.1 package from xorg, but there are just source tarball, not like xorg6.8 or xorg6.9 using "make World" to build it. then I download build_from_tarball.sh file from some forums to build xorg7.1 and it seems OK, but unfortunately, it's for 32-bit platform, so how to build xorg7.1 on 64-bit platform, i need your help, thanks! ThanksJeff   
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