Database Reference
In-Depth Information
Drake is written in the programming language Clojure, which means that it runs on
the Java Virtual Machine (JVM). There are pre-built JARs available, but because
Drake is in active development, we'll build it from source. For this, you will need to
install Leiningen:
$
sudo apt-get install openjdk-6-jdk
$
sudo apt-get install leiningen
Then, clone the Drake repository from Factual:
$
git clone https://github.com/Factual/drake.git
And build the JAR using Leiningen:
$
cd
drake
$
lein uberjar
This creates
drake.jar
. Copy this file to a directory that's on your
PATH
—for example,
~/.bin
:
$
mv drake.jar ~/.bin/
At this point, you should already be able to run Drake:
$
cd
~/.bin/
$
java -jar drake.jar
This is not really convenient for two reasons: (1) the Java Virtual Machine (JVM)
takes a long time to start, and (2) you can only run it from that directory. We advise
you to install Drip, which is a launcher for the JVM that provides much faster startup
times than the
java
command. First, clone the Drip repository from Flatland:
$
git clone https://github.com/flatland/drip.git
$
cd
drip
$
make
prefix
=
~/.bin install
Then, create a Bash script that allows you to run Drake from everywhere:
$
cd
~/.bin
$
cat
<< 'EOF' > drake
>
#!/bin/bash
>
drip -cp $(dirname $0)/drake.jar drake.core "$@"
>
EOF
$
chmod +x drake
To verify that you have correctly installed both Drake and Drip, you can run the fol‐
lowing command, preferably from a different directory:
$
drake --version
Drake Version 0.1.6
