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Making the chroot

At least debootstrap and schroot are required. I didn't compile an exhaustive list of other dependencies on the host system, so YMMV.

Configuring schroot

Add a file (name does not matter) to /etc/schroot/chroot.d with the following contents, after substituting an absolute path for $DIR:

description=Ubuntu Maverick

Then, remove or comment out the /home bind mount in /etc/schroot/default/fstab!

This configuration has been tested with schroot 1.4.23. With any other version YMMV.

Building and entering the chroot

debootstrap --variant=buildd --arch i386 maverick $DIR
mkdir -p $DIR/home/buildbot/www
chown buildbot:buildbot $DIR/home/buildbot
schroot -c buildbot-maverick

Inside the chroot

Run (as root)

echo 'deb maverick universe' >> /etc/apt/sources.list
sed s/deb/deb-src/g /etc/apt/sources.list >> /etc/apt/sources.list
apt-get update
apt-get install nano git-core python-dev python-setuptools

cd /root
git clone git://
cd buildbot
git checkout v0.8.3p1
cd slave
python install
mkdir /slave
chown buildbot:buildbot /slave

Build dependencies for Windows build (except MinGW, see below):

apt-get install cmake nsis p7zip-full unzip wget pandoc
apt-get install openjdk-6-jdk   #to enable building of Java AIs

Build dependencies for Linux build:

apt-get install libboost-all-dev libdevil-dev libfreetype6-dev libopenal-dev \
    libogg-dev libvorbis-dev libglew-dev libsdl-dev libxcursor-dev \

Recompile MinGW package with dwarf2 exceptions instead of sjlj exceptions (as root)

First recompile the compiler itself:

mkdir mingw
cd mingw
apt-get build-dep gcc-mingw32
apt-get source gcc-mingw32
cd gcc-mingw32-4.4.4
editor debian/rules   # remove --enable-sjlj-exceptions, add --disable-sjlj-exceptions --with-dwarf2
dpkg-buildpackage -rfakeroot -b
cd ..
dpkg -i gcc-mingw32*.deb
echo "gcc-mingw32 hold"|dpkg --set-selections

Then recompile the runtime libraries against the new compiler:

apt-get build-dep mingw32-runtime
apt-get source mingw32-runtime
cd mingw32-runtime-3.15.2
dpkg-buildpackage -rfakeroot -b
cd ..
dpkg -i mingw32-runtime*.deb
echo "mingw32-runtime hold"|dpkg --set-selections

Optionally, remove build dependencies (check what apt-get build-dep installed!):

apt-get purge autoconf automake autotools-dev cdbs debhelper fdupes gettext \
    gettext-base groff-base html2text intltool intltool-debian libcroco3 \
    libfont-afm-perl libgmp3-dev libgmpxx4ldbl libhtml-format-perl \
    libhtml-parser-perl libhtml-tagset-perl libhtml-tree-perl \
    libmail-sendmail-perl libmailtools-perl libmpfr-dev \
    libsys-hostname-long-perl libunistring0 liburi-perl libwww-perl \
    libxml-parser-perl lzma m4 man-db mingw-w64 po-debconf

Patch a few things

We set up ld to allow only one execution at the same time, to prevent thrashing the box due to multiple parallel linker jobs. We "patch" makensis to not sync the installer to disk after every tiny chunk of data it has written. This speeds installer building up by an order of magnitude.

First, copy over ld, makensis and no-msync.c from spring/buildbot/slave (Spring repository) to the chroot. Then switch to the directory (inside the chroot!) where you copied those files and do:

For Linux builds:

mv /usr/bin/ld /usr/bin/ld.orig
cp ld /usr/bin/ld

For MinGW builds:

mv /usr/bin/i586-mingw32msvc-ld /usr/bin/i586-mingw32msvc-ld.orig
cp ld /usr/bin/i586-mingw32msvc-ld
mv /usr/i586-mingw32msvc/bin/ld /usr/i586-mingw32msvc/bin/ld.orig
cp ld /usr/i586-mingw32msvc/bin/ld

For makensis:

gcc -shared -m32 no-msync.c -o
cp makensis /usr/local/bin/

Run (as buildbot user)

Substitute MASTER with host:port of the buildmaster and SLAVENAME and PASSWORD with the slave name and password as configured in the master.

buildslave create-slave /slave MASTER SLAVENAME PASSWORD
cd /slave
git clone git://


To install ccache simply run apt-get install ccache (inside the chroot) and (optionally) tweak the settings (cache size etc.)

Outside the chroot again

Get the Makefile from the Spring repository that can be used to start/stop the slave easily:

wget -O Makefile

Then you can use:

make start-slave    # creates schroot session and starts buildslave in it
make stop-slave     # stops buildslave and remove schroot session
make enter-chroot   # enter the schroot as buildbot user

Make sure you review the Makefile and fix the chroot name, paths, etc. before using it! (That applies to anything in this readme really.)

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