I've installed 4.0_BETA2 with no XFree86 file sets since I was going
to build modular X.org through pkgsrc.  Starting with the information
on what is required from the following:

http://mail-index.netbsd.org/pkgsrc-users/2007/08/08/0010.html

Compilation, however, fails with PKG_FAIL_REASON being:

x11-links-0.31 requires X headers to be installed

Where do I find the necessary headers in order to build modular X.org?
 Should I be installing 4.0_BETA2's xbase.tgz file set?

Thanks for any information which can be shared.

Jim