/usr/X11R6/bin/xterm Xt error: Can't open display:

[makoto:~] makoto% /usr/X11R6/bin/X

XFree86 Version 4.2.1 / X Window System
(protocol Version 11, revision 0, vendor release 6600)
Release Date: 3 September 2002
        If the server is older than 6-12 months, or if your hardware is
        newer than the above date, look for a newer version before
        reporting problems.  (See http://www.XFree86.Org/FAQ)
Operating System: Darwin OSVendor
Using keymapping provided in /System/Library/Keyboards/USA.keymapping.
_XSERVTransmkdir: Owner of /tmp/.X11-unix should be set to root
PseudoramiX screen 0 added: 1280x854 @ (0,0).
PseudoramiX screen 0 placed at X11 coordinate (0,0).
[DRI] screen 0 installation complete
Screen 0 added: 1280x854 @ (0,0)

[makoto:~] makoto% setenv DISPLAY 0:0
[makoto:~] makoto% /usr/X11R6/bin/xterm
Failed to open input method
^Z
Suspended
[makoto:~] makoto% bg
[2]    /usr/X11R6/bin/xterm &
[makoto:~] makoto% /usr/X11R6/bin/twm
_XF86BigfontQueryFont: could not attach shm segment
kCGErrorIllegalArgument : CGSSetWindowClipShape: Invalid region

[makoto:~/src] makoto% tar zxf ../distfiles/kterm-6.2.0.tar.gz 
[makoto:~/src] makoto% cd kterm-6.2.0/
[makoto:~/src/kterm-6.2.0] makoto% mkmf -a
mkmf: Command not found.
[makoto:~/src/kterm-6.2.0] makoto% imake
Imakefile.c:13: Imake.tmpl: No such file or directory
imake: Exit code 1.
  Stop.
[makoto:~/src/kterm-6.2.0] makoto% which gcc
/usr/bin/gcc
[makoto:~/src/kterm-6.2.0] makoto% gcc --version
gcc (GCC) 3.1 20020420 (prerelease)
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

[makoto:~/src/kterm-6.2.0] makoto% 

make[2]: *** No rule to make target `../../include/cannaconf.h', needed by `tempdic.o'. Stop. making all in lib/RKC...

ttyp6:makoto@makoto 21:40:47/030209(~/src/emacs-21.2.95)% ./configure
creating cache ./config.cache
checking host system type... powerpc-apple-darwin6.3
configure: error: Emacs hasn't been ported to `powerpc-apple-darwin6.3' systems.
Check `etc/MACHINES' for recognized configuration names.

--- configure.in-ooo    Sun Feb  9 21:42:25 2003
+++ configure.in        Sun Feb  9 21:43:56 2003
@@ -224,6 +224,12 @@
 machine='' opsys='' unported=no
 case "${canonical}" in
 
+  *-*-darwin* )
+    opsys=darwin
+    case "${canonical}" in
+      powerpc-apple-darwin*) machine=macppc ;;
+    esac
+  ;;
   ## NetBSD ports
   *-*-netbsd* )
     opsys=netbsd

ttyp6:makoto@makoto  21:43:56/030209(~/src/emacs-21.2.95)% autoconf
./aclocal.m4:30: error: m4_defn: undefined macro: _m4_divert_diversion
aclang.m4:1479: AC_PROG_CC_STDC is expanded from...
./aclocal.m4:30: the top level

ttyp6:makoto@makoto  21:44:27/030209(~/src/emacs-21.2.95)% autoconf --version
autoconf (GNU Autoconf) 2.52