Building Gem5 from scratch on ubuntu 12.04 “LTS”

Assuming you have a fresh Ubuntu 12.04 installed, and I assume you already understand what is the python script gem5.opt, gem5.debug, gem5.fast … etc if not you can easily visit the official website of Gem5 documentation http://m5sim.org/Documentation

$ sudo apt-get update; sudo apt-get upgrade

# installing the needed packages for Gem5

$ sudo apt-get install mercurial scons swig gcc m4 python python-dev libgoogle-perftools-dev g++  build-essential

# you can download the .tar.gz file and extract it but I prefer grabbing from the repo just in # case you needed to run $ hg pull to update the code or to commit

$ hg clone http://repo.gem5.org/gem5   # this is a developer version

$ cd gem5/

# Gem5 uses scons build system instead of make

$ scons build/ARM/gem5.opt

## To test the System Emulation mode you can run one of the programs shipped with Gem5
$ ./build/ARM/gem5.opt configs/example/se.py -c tests/test-progs/hello/bin/arm/linux/hel­lo

# You can check out this live demo by Bayn in this youtube Video

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