Start by installing distcc using homebrew on your local machine and all the
machines you want to use for distributed builds.
brew install distcc
The only requirement for the build machines is that they run the same operating system and generate compatible object files. The source files are preprocessed on your local machines before being dispatched. This is different when using "pump" mode but unless you have a lot of builders it is not really relevant.
On your local machine, create the following file:
~/.distcc/hosts
For every build machine, add its IP followed by its number of cores, separated
by a slash. You can specify lzo compression for every machine as well. An
example of the file is given below.
--localslots_cpp=32
--randomize
192.168.1.1/8,lzo
192.168.1.2/8,lzo
192.168.1.3/8,lzo
192.168.1.4/8,lzo
The first directive (--localslots_cpp=32) tells distcc to use 32 threads
for preprocessing the files. You'll want to tweak this based on the amount of
CPUs and RAM you have available on your host machine.
The next directive (--randomize) says to randomize between the builders. If
you want to include your local machine, you should specify it above this, so
that works is assigned to your local machine first.
Next, tell ccache to prefix every invocation with distcc if the previously
created file exists.
if test -e ~/.distcc/hosts
if type -p distcc >/dev/null 2>&1
set -x CCACHE_PREFIX "distcc"
end
end
Finally, run the distcc deamon locally. You'll need this regardless of
whether you're compiling locally, because it is responsible for actually
dispatching work to the builders.
distccd --daemon --allow 127.0.0.1
Setting up a builder is extremely easy. All you have to do is start the deamon and tell it to accept connections from a certain range of IP-addresses.
distccd --daemon --allow 192.168.0.0/16