This is minimal descripion how to build arm-wince-pe gcc cross compiler.
Altough TCPMP doesn't use full gcc build, but it has a gcc supported
compiling setting for more a optimized version. This means you only need
to build a cross c compiler without any clib or linking functionality.

1. preparations
---------------

in cygwin you need to have installed: 
binutils, gcc, make, bison, byacc, flex, perl, w32api

you should set c:/cygwin/bin infront of c:\windows in path
(example to use cygwin's sort.exe)

download latest gcc-core,gcc-g++,binutils and extract to /usr/src 
(http://ftp.gnu.org/gnu/gcc/)
(ftp://sources.redhat.com/pub/binutils/snapshots/)

the versions i'am currently using:
gcc-3.4.3
binutils-2.16

2. patching (IMPORTANT!)
------------

use the diff patch found in this directory

cd /usr/src
cat gcc-3.4.3.wince.diff | patch -p1

3. compiling
------------

(replace x.xx x.x.x with actual binutils and gcc version)

export PREFIX=/usr/arm-wince
export TARGET=arm-wince-pe
cd /usr/src
mkdir build-binutils-wince build-gcc-wince

cd /usr/src/build-binutils-wince
../binutils-x.xx/configure --target=$TARGET --prefix=$PREFIX --disable-nls
make all install

cd /usr/src/build-gcc-wince
export PATH=$PATH:$PREFIX/bin
../gcc-x.x.x/configure --target=$TARGET --prefix=$PREFIX --disable-nls \
    --enable-languages=c,c++ --without-headers --with-newlib
make all-gcc install-gcc

4. final adjustments
--------------------

add c:/cygwin/usr/arm-wince/bin to the path
add to EVC in options/directories as well