Tables of Contents

Yocto Build

Host Machine Setup

Hardware requirements:

• Ubuntu 18.04 desktop machine
• RAM - 8 GB or more
• Memory - a minimum of 100 GB free space

Refer to the link for host machine setup: Host Setup

Yocto workspace setup

Initialization:
$ repo init -u https://code.rdkcentral.com/r/manifests -b dunfell -m rdkvrdkc-nosrc.xml
repo sync -j `nproc` --no-clone-bundle --no-tags

# fix to use eSDK from all supported images
(cd meta-rdk; git fetch " -b dunfell
                                ( or )
$ repo init -u https://code.rdkcentral.com/r/components/generic/rdk-oe/meta-rdk" refs/changes/37/51037/1 && git cherry-pick FETCH_HEAD)

Note: The above bug fixes changes are temporary given as instructions. This is not required once the change is get merged into the appropriate layer.

Populate eSDK

...

manifests -m rdkc-extsrc.xml -b dunfell

Download/Sync:
$ repo sync -j `nproc` --no-clone-bundle --no-tag

Populate eSDK

...

MACHINE=raspberrypi-rdk-mc source meta-cmf-raspberrypi/setup-environment
bitbake rdk-generic-mediaclient-wpe-image -c populate_sdk_ext

...

image build

Code Block
language bash
theme	RDark
title	eSDK Population
$ MACHINE= raspberrypi raspberrypi3-rdk- hybrid camera source meta-cmf-raspberrypi/setup-environment $ bitbake rdk-generic- hybrid-wpe camera-image -c populate_sdk _extThe generated eSDK installer resides under the directory build-<MACHINE>/tmp/deploy/sdk/rdk-glibc-x86 _ 64-arm-toolchain- ext -2.0.sh of the Yocto workspace.Note: The generated eSDK installer script usually occupies 2 to 2.5 GB

eSDK Installation

The installer can be done on any x86_64 Linux machines.

Host Configuration

Refer to the RDKCentral's credential configuration to setup RDK Central's credentials in the machine where eSDK to be installed. This is to access repositories by the RDK Yocto recipes that reside in the eSDK installer.

Installation

# run the installer script file
# installer asks for a directory to install (default directory ~/rdk_sdk)
# installer asks permission to proceed
./rdk-glibc-x86_64-arm-toolchain-ext-2.0.sh

Below is the result (terminal output) of the installation

Build from eSDK

This section covers how to use the eSDK for component build and image build

Environment Setup

The installer can be run on any x86_64 Linux based machines.

# change directory to the installed path
cd ~/rdk_sdk
# setup the eSDK environemnt
source environment-setup-cortexa7t2hf-neon-vfpv4-rdk-linux-gnueabi

New Components

Add Component

# way 1
# add a new recipe with URL
devtool add <recipe_name> <source URL>
# eg.
Example:
# devtool add westerossctplib httpsgit://github.com/rdkcmfrdkcteam/westerosusrsctplib

# way 2
# add a new recipe with external source directory
devtool add <recipe_name> <absolute path>

Example:
# eg. devtool add westerossctplib /path/for/source/directory

Modify Component

# modify existing recipe's URL or srctree or to add patches
devtool modify <recipe_name> <new URL>
# eg. devtool modify westeros https://code.rdkcentral.com/r/rdk/components/generic/westeros

Edit Component's recipe

# modify recipe from an editor
devtool edit-recipe <recipe_name>

Example:
# eg. devtool edit-recipe westeros

Upgrade Component

# modify existing recipe's URL or srctree or to add patches
devtool upgrade --version <version number> <recipe_name>
# eg. devtool upgrade --version 1.0.21 westerossctplib

Build Components

# Pre-requisite: add a new recipe using devtool
devtool build <recipe_name>

Example:
# eg. devtool build westerossctplib

Deploy binaries

# Pre-requisite: add a new recipe using devtool
devtool deploy-target <recipe_name> <target_path>

Example:
# eg. devtool deploy-target westerossctplib root@192.168.xx.xx

Build Image

A complete RDK image can be generated from the eSDK installer.

Note: The same image where the eSDK populated can be generated here.

# devtool command to build image from eSDK
# <IMAGE> - rdk-generic-mediaclientcamera-wpe-image
devtool or rdk-generic-hybrid-wpe-image
build-image <IMAGE>

Example:
# devtool build-image <IMAGE>rdk-generic-camera-image