With xsrc of 20000127 on 1.4.2_ALPHA of that date, I get this error:

making all in programs/Xserver/hw/netbsd/vax...
rm -f mono_io.o
gcc -c -O2 -pipe -B/cc1hack/ -ansi -Dasm=__asm  -I. -I../../../mfb  -I../../../mi -I../../../include        -I../../../../../exports/include/X11 -I../../../../../include/fonts  -I../../../../.. -I../../../../../exports/include  -DCSRG_BASED -DSHAPE  -DXKB -DLBX -DXAPPGROUP -DXCSECURITY   -DPIXPRIV  -DGCCUSESGAS -DNDEBUG   -DFUNCPROTO=15 -DNARROWPROTO    mono_io.c
mono_io.c:46: machine/qvioctl.h: No such file or directory
.... many more errors ...

Now that I've run into this I'm going to finally update my sources,
but I figured I should report it anyway in case it's new.

Todd Whitesel
toddpw @ best.com