git clone https://scm.gforge.inria.fr/anonscm/git/jmake-release/jmake-release.git
JMake also requires that the script make.cross is in your path. Running JMake may cause this script to install cross compilers on your machine.
The simplest usage of JMake is to go to the directory of your Linux tree and run jmake on the commit you want to test. By default, this will create a temporary directory named /run/shm/gcctmp/linux0 in which it will copy your Linux tree and perform compilation experiments. Check that you have sufficient room and permission for /run/shm for this. An alternate temporary directory can be provided with the command-line argument --tmpdir. Other command line arguments are available with the --help argument.
JMake is a research prototype. The output may seem mysterious or verbose. The command line options other than the ones described above may not behave as expected. Questions and feedback are welcome.