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+# Paranoid Android GKI
+
+## Setting up your machine ##
+
+You must be running a 64-bit Linux distribution and must have installed some packages to build
+Paranoid Android. Google recommends using [Ubuntu](http://www.ubuntu.com/download/desktop) for
+this and provides instructions for setting up the system (with Ubuntu-specific commands) on
+[the Android Open Source Project website](https://source.android.com/source/initializing.html#setting-up-a-linux-build-environment).
+
+Once you have set up your machine according to the instructions by Google, return here and carry
+on with the rest of the instructions.
+
+## Grabbing the source ##
+
+[Repo](http://source.android.com/source/developing.html) is a tool provided by Google that
+simplifies using [Git](http://git-scm.com/book) in the context of the Android source.
+
+### Installing Repo ###
+
+```bash
+# Make a directory where Repo will be stored and add it to the path
+$ mkdir ~/.bin
+$ PATH=~/.bin:$PATH
+
+# Download Repo itself
+$ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/.bin/repo
+
+# Make Repo executable
+$ chmod a+x ~/.bin/repo
+```
+
+### Initializing Repo ###
+
+```bash
+# Create a directory for the source files
+# You can name this directory however you want, just remember to replace
+# WORKSPACE with your directory for the rest of this guide.
+# This can be located anywhere (as long as the fs is case-sensitive)
+$ mkdir WORKSPACE
+$ cd WORKSPACE
+
+# Install Repo in the created directory
+$ repo init -u https://github.com/sm4450-development/kernel_manifest -b android12-5.10-sky
+```
+
+### Downloading the source tree ###
+
+This is what you will run each time you want to pull in upstream changes. Keep in mind that on your
+first run, it is expected to take a while as it will download all the required Android source files
+and their change histories.
+
+```bash
+# Let Repo take care of all the hard work
+#
+# The -j# option specifies the number of concurrent download threads to run.
+# 8 threads is a good number for most internet connections.
+# You may need to adjust this value if you have a particularly slow connection.
+$ repo sync --no-tags --no-clone-bundle --current-branch -j8
+```
+
+## Building ##
+
+```bash
+# Go to the root of the source tree...
+$ cd WORKSPACE
+# ...and run the builder tool.
+$ ./build.sh
+
+# Optional arguments:
+# -f : Full LTO (longer build time, generates slightly more optimized kernel image)
+# -c : Clean build (remove leftover from previous builds)
+```