Installation problem: the 'make' command

[adenisawa]

Hi. I'm trying to install the tool. I successfully do the first 3 steps: (1) cloning the repository, (2) $ git submodule init (3) $ git submodule update

However, running the next step: the 'make' command results in the following error message:

mkdir lib ant -f Clustering/build.xml jar make: ant: Command not found Makefile:15: recipe for target 'Clustering/dist/Clustering.jar' failed make: *** [Clustering/dist/Clustering.jar] Error 127

I have tried many many times, including removing and repeating the steps, but no success. Any idea on how to go about it? Thanks.