# install build dependencies

# not sure ALL these are needed, but this is what I've ran
sudo apt-get install libunistring-dev libunistring0 libgmp-dev libgc-dev libffi-dev libltdl-dev libltdl7 libffi6
sudo apt-get build-dep emacs24

# download source

mkdir emacs-guile
cd emacs-guile
git clone git://git.hcoop.net/git/bpt/emacs.git
git clone git://git.hcoop.net/git/bpt/guile.git

# guile

cd guile
autoreconf -vif
automake --add-missing
./configure
make
# optionally make -j8. this step is SLOW. paralellize as much as you got CPU.
sudo make install

# emacs

cd ../emacs

# default is wip-guile, which is incorrect
git checkout wip

# based on http://comments.gmane.org/gmane.emacs.devel/134732
aclocal -I m4
autoconf
autoheader
automake --gnu -a -c lib/Makefile
make
# just regular "make" here, to be safe.
# abort and try "make -k" instead if the build never seems to finish or to loop.
# (like adding "Finding docstrings" several times)

# on successfull build
cd src
./emacs -Q
# -Q = quick boot. no site-file, no regular .emacs etc. should work.
# now be a man and try without the -Q :)