Replicant

h1. Galaxy S 3 (I9300) Build

This page explains how to build Replicant for the Galaxy S 3 (I9300).

h2. Prerequisites

Before building, you must make sure that:

* You have installed the build dependencies: [[BuildDependenciesInstallation]]

* You have downloaded Replicant 6.0 sources: [[ReplicantSourceCode]]

* Your sources are up to date: [[ReplicantSourceCode#DownloadingUpdating-the-source-code|Downloading/Updating the source from the repos]]

* Your terminal is running in the directory where the sources were downloaded

h2. Warning

*Do not build as root, always build as user.*

h2. Building

All of the following build commands need to be run in the source tree root folder.

First, the toolchain needs to be built:

<pre>

./vendor/replicant/build-toolchain

</pre>

*If you have executed any of the commands below and you want to run the toolchain build again, you will need to open a new shell.*

Then, prepare the shell environment for the Replicant build:

<pre>

. build/envsetup.sh

lunch replicant_i9300-userdebug

</pre>

Start the build:

<pre>

parallel_tasks=$(echo "$(grep 'processor' /proc/cpuinfo | wc -l ) + 1" | bc)

make -j$parallel_tasks bacon

</pre>

The -jn argument is to indicate the number of parallel tasks during the build. 

You can remove it from the command line to have only one task at a time. With fast hardware, best results will come with @-j9@, @-j16@ and @-j32@.

Finally, sign the resulting images:

<pre>

./vendor/replicant/sign-build i9300

</pre>

The first time you run the script, it will ask you a few questions that are needed to generate the necessary signing keys. 

h2. Output files

The produced files are located at:

* built target images: @out/dist/i9300/@

* built host tools: @out/host/linux-x86/bin/@