Steps to build kaffepc under linux:

1. Prerequisites
As linux systems usually carry all the gnu utilities (gcc, sed, patch etc.)
the only thing you may have to install in order to build kaffepc is the
jdk, version 1.1.x or 1.2.x (i use 1.1.7) and maybe zip/unzip
(apart from the djgpp cross compiler - see next)

2. Setting up the djgpp cross compiler:
get the following files:

	gcc-2.7.2.tar.gz
	binutils-2.7.tar.gz
(from your favorite gnu archive)
	djcrx201.zip
(from your favorite djgpp archive, in v2tk/old)
(I keep copies on my home page: http://www.ci.tuwien.ac.at/~grill/kaffepc.html)

A word - you may (and most certainly will) try to use some newer versions
of the gnu stuff. At least, this will need some tweaking - I tried gcc 2.8.1
and failed miserably (maybe 2.7.2.1 works - I'm told that 2.7.2 had a few
serious bugs, in particular structure packing doesn't work in C++ - but the
one we're building is C only anyway, at least as it comes out of the box, so
who cares anyway.
As for djcrx, there is a newer (202) verison available, but I recommend against
it - I (inadvertently) used it for my first few builds, and lost a bit of hair
[long troublesome story omitted - mail me for details]. As far as I understand,
there was a change in the startup/crt0/dpmi interface that just happens to be
incompatible with the way kaffepc handles the ugly low-level details.

Create a directory for the source (henceforth called the `base directory')
cd to your base directory and:
	unzip -a djcrx201.zip
	tar -zxvf gcc-2.7.2.tar.gz
	tar -zxvf binutils-2.7.tar.gz
copy everything from the `cross' subdir up into the base directory
apply the library patch:
	patch -p0 patch.lib
edit the top level Makefile: set the PREFIX variable to where your
executables are supposed to go (I suggest /usr/local; that's what I use)

now
	make all
have some coffee (my AMD 400 took about 5 minutes, so you may be able to
figure out if you can go out to lunch or just have an Al Bundy-style encounter)
	make install

Now, go ahead and play around with your new compiler a bit, trying out all
those great pieces of programming wisdom ("Wello Hurld!"), and come back 
later to

3. Compiling kaffepc
3.1 Setting up the sources
You can get them as kaffepc-1.0.b3.tar.gz from the official Kaffepc Web site,
or take kaffepc.tgz from my homepage.
Again, create a `base directory' and there 
	tar -zxvf kaffepc-1.0.b3.tar.gz
this will give you a nice directory tree under
 <your base directory>/kaffepc-1.0.b3
(those of you who read ahead - yes, you were right in NOT creating a base dir)
Now, take the patch "patch.linux" from my site and apply it
(from <base directory>/kaffepc-1.0.b3 - thats where everything else is going
to happen)
	patch -p1 <patch.linux
Now (hopefully) you have a few files changed, a few replaced, and
there's only a few steps left:

edit Environment: change the DJGPPHOME variable to the place where your
dos libraries sit (if you installed the cross compiler into /usr/lib
as I told you, you won't have to change anything)
make sure $PREFIX/bin is in your path (that's where dos-gcc and all the
other executables sit); 
make sure javac, jar and the likes are on the path
then 
	source Environment
will set up all the variables you need
	make support
creates a few (4) support libraries and puts them where dos-gcc can find them
	make
and ... TADAH! (actually you will want to make buildbin - you can do it now,
and you get a nice binary distribution in ./kpcbin/kaffepc)