Cross compile error X11

Hi,

I am trying to cross compile an application for Tiny6410. I used the cross
compiler (arm-linux-none-4.5.1) which is present in the CD. 

However, as my application uses X11, the compilation is giving an error.
The error is as below. Can somebody please suggest how to overcome this
error?
=============================ERROR MESSAGE============================
arm-linux-gcc-4.5.1  -o o.emu asm-arm.o os.o segflush-arm.o emu.root.o
lock.o cmd.o devmnt.o ipif-posix.o win-x11a.o devdraw.o devfs.o devdup.o
devsnarf.o devcmd.o devprog.o devindir.o devmem.o deveia.o devpointer.o
devcap.o devssl.o devenv.o devroot.o srv.o devcons.o devip.o ipaux.o
devsrv.o devprof.o devpipe.o uqid.o latin1.o dev.o proc.o exportfs.o qio.o
parse.o main.o error.o dial.o discall.o cache.o alloc.o inferno.o env.o
dis.o devtab.o pgrp.o errstr.o chan.o print.o exception.o sysfile.o
random.o emu.o /home/inferno/Linux/arm/lib/libinterp.a
/home/inferno/Linux/arm/lib/libtk.a
/home/inferno/Linux/arm/lib/libfreetype.a
/home/inferno/Linux/arm/lib/libmath.a /home/inferno/Linux/arm/lib/libdraw.a
/home/inferno/Linux/arm/lib/libmemlayer.a
/home/inferno/Linux/arm/lib/libmemdraw.a
/home/inferno/Linux/arm/lib/libkeyring.a
/home/inferno/Linux/arm/lib/libsec.a /home/inferno/Linux/arm/lib/libmp.a
/home/inferno/Linux/arm/lib/lib9.a -lX11 -lXext -lm
/opt/FriendlyARM/toolschain/4.5.1/lib/gcc/arm-none-linux-gnueabi/4.5.1/../../../
../arm-none-linux-gnueabi/bin/ld:
cannot find -lX11
collect2: ld returned 1 exit status
mk: arm-linux-gcc-4.5.1 -c -DROOT="/home/inferno" ...  : exit
status=exit(1)
mk: echo "(cd $SYSTARG; ...  : exit status=exit(1)
mk: for j in ...  : exit status=exit(1)

===========================================================================

Thanks,
-Shubhangi

Additional info - 

There is no file/folder present in the folder
"/opt/FriendlyARM/toolschain/4.5.1" and its sub-folder.

-Shubhangi

Oops...correction

Additional info - 

There is no file/folder present with name "libX11" in the folder
"/opt/FriendlyARM/toolschain/4.5.1" and its sub-folder.

-Shubhangi

To cross compile an X application you need all related X libraries and
header files also in a cross compiled form. So, start to cross compile the
X system and *then* cross compile your X application against these libs and
headers. Or, use one of the available rootfs build systems to do it for
you.

Available rootfs build system with x libraries n header files??

@Juergen

I am using Ubuntu 10.04 on my laptop. I have the X library installed on my
laptop. Do you mean 
1. I have to first cross compile all the X library files to ARM 
2. then put them in the cross compiler folder to be used to cross compile
my application?

I have never done this before. Could you please advise how do I do it?

Thanks in advance.
-Shubhangi

Installing everything on your host does not help. It is for your host (x86
based I guess), but not for your target.

answer to 1. Yes
answer to 2. Mostly not. Just add the correct header and library include
             paths when you compile your application.

> Could you please advise how do I do it?

Use any kind of rootfs build system instead. Doing it manually would be the
hard way.