Difference between revisions of "Yocto Project my own quick start"

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This page is an excerpt from [http://www.yoctoproject.org/docs/1.1/yocto-project-qs/yocto-project-qs.html Yocto Project Quick Start Copyright © 2010-2011 Linux Foundation]
+
This page is an excerpt from [http://www.yoctoproject.org/docs/current/yocto-project-qs/yocto-project-qs.html Yocto Project Quick Start Copyright © 2010-2018 Linux Foundation]
  
  
== The Packages ==
+
== The required packages ==
  
Packages and package installation vary depending on your development system. In general, you need to have root access and then install the required packages. The next few sections show you how to get set up with the right packages for Ubuntu, Fedora, and openSUSE.
+
Packages and package installation vary depending on your development system. In general, you need to have root access and then install the required packages. The next few sections show you how to get set up with the right packages for Ubuntu.
Ubuntu
 
  
If your distribution is Ubuntu, you need to be running the bash shell. You can be sure you are running this shell by entering the following command and selecting "No" at the prompt:
+
If you have different distributions, please refer to the [https://www.yoctoproject.org/docs/current/yocto-project-qs/yocto-project-qs.html Yocto Project Quick Start]
  
     $ sudo dpkg-reconfigure dash               
+
The packages you need for a supported Ubuntu distribution are shown in the following command:
 +
 
 +
     $ sudo apt-get install gawk wget git-core diffstat unzip texinfo gcc-multilib \
 +
    build-essential chrpath socat cpio python python3 python3-pip python3-pexpect \
 +
    xz-utils debianutils iputils-ping libsdl1.2-dev xterm
 +
 
 +
== Development Code - branch 2.4 'rocko' ==
 +
 
 +
Yocto Project code can be found in the Yocto Project Source Repositories.
 +
To check out current development code using git:
 +
 
 +
$ cd $HOME/yocto
 +
$ git clone git://git.yoctoproject.org/poky -b rocko
 +
 
 +
 
 +
$ cd $HOME/yocto/poky
 +
$ git clone git://git.openembedded.org/meta-openembedded -b rocko
 +
 
 +
poky/
 +
├── bitbake
 +
├── documentation
 +
├── LICENSE
 +
├── meta
 +
├── meta-openembedded
 +
├── meta-poky
 +
├── meta-selftest
 +
├── meta-skeleton
 +
├── meta-yocto-bsp
 +
├── oe-init-build-env
 +
├── README.hardware -> meta-yocto-bsp/README.hardware
 +
├── README.LSB
 +
├── README.poky -> meta-poky/README.poky
 +
├── README.qemu
 +
└── scripts
 +
 
 +
== Initializing the Build Environment ==
 +
 
 +
From the parent directory your Source Directory, initialize your environment and provide a meaningful Build Directory name:
 +
 
 +
$ cd $HOME/yocto/poky
 +
$ source oe-init-build-env
 +
 
 +
At this point, the '''build''' directory has been created for you and it is now your current working directory.
 +
This is the default tree you should have to build.
 +
 
 +
 
 +
poky/
 +
├── bitbake
 +
├── build          <----- run bitbake inside here
 +
├── documentation
 +
├── LICENSE
 +
├── meta
 +
├── meta-openembedded
 +
├── meta-poky
 +
├── meta-selftest
 +
├── meta-skeleton
 +
├── meta-yocto-bsp
 +
├── oe-init-build-env
 +
├── README.hardware -> meta-yocto-bsp/README.hardware
 +
├── README.LSB
 +
├── README.poky -> meta-poky/README.poky
 +
├── README.qemu
 +
└── scripts
 +
 
 +
== Edit the configuration files ==
 +
 
 +
Edit $HOME/yocto/poky/build/conf/bblayers.conf
 +
 
 +
 
 +
# POKY_BBLAYERS_CONF_VERSION is increased each time build/conf/bblayers.conf
 +
# changes incompatibly
 +
POKY_BBLAYERS_CONF_VERSION = "2"
 +
 +
BBPATH = "${TOPDIR}"
 +
BBFILES ?= ""
 +
 +
BBLAYERS ?= " \
 +
  /home/koan/yocto/poky/meta \
 +
  /home/koan/yocto/poky/meta-poky \
 +
  /home/koan/yocto/poky/meta-yocto-bsp \
 +
  /home/koan/yocto/poky/meta-openembedded/meta-oe \
 +
  "
 +
 
 +
Remember also to edit the file $HOME/yocto/poky/build/conf/local.conf
 +
and check the following variables:
 +
 
 +
MACHINE ?= "qemuarm"
 +
DISTRO ?= "poky"
 +
PACKAGE_CLASSES ?= "package_ipk"
 +
INHERIT += "rm_work"
 +
 
 +
== Building the Image ==
 +
 
 +
At this point, you need to select an image to build.
 +
If this is your first build using the Yocto Project, you should try the smallest and simplest image:
 +
 
 +
$ bitbake core-image-minimal 
 +
 
 +
Now you just wait for the build to finish.
 +
 
 +
== Starting the QEMU Emulator ==
 +
 
 +
Before you start the QEMU emulator, be sure you have already to set up the emulation environment.
 +
 
 +
The following command setup the emulation environment and launch QEMU.
 +
 
 +
$ runqemu qemuarm
 +
 
 +
Or if you prefer, open a new shell terminal, setup the environment again and run
 +
 
 +
$ runqemu qemuarm nographic
 +
 
 +
== Building cross-compiler ==
  
The packages you need for a supported Ubuntu distribution are shown in the following command:
+
If you want you can create a re-distribuible cross-compiler targeted at your MACHINE.
  
    $ sudo apt-get install sed wget cvs subversion git-core coreutils \
+
$ bitbake meta-toolchain
    unzip texi2html texinfo libsdl1.2-dev docbook-utils gawk \
 
    python-pysqlite2 diffstat help2man make gcc build-essential \
 
    g++ desktop-file-utils chrpath libgl1-mesa-dev libglu1-mesa-dev \
 
    mercurial autoconf automake groff libtool xterm
 

Latest revision as of 09:29, 29 April 2018

This page is an excerpt from Yocto Project Quick Start Copyright © 2010-2018 Linux Foundation


The required packages

Packages and package installation vary depending on your development system. In general, you need to have root access and then install the required packages. The next few sections show you how to get set up with the right packages for Ubuntu.

If you have different distributions, please refer to the Yocto Project Quick Start

The packages you need for a supported Ubuntu distribution are shown in the following command:

    $ sudo apt-get install gawk wget git-core diffstat unzip texinfo gcc-multilib \
    build-essential chrpath socat cpio python python3 python3-pip python3-pexpect \
    xz-utils debianutils iputils-ping libsdl1.2-dev xterm

Development Code - branch 2.4 'rocko'

Yocto Project code can be found in the Yocto Project Source Repositories. To check out current development code using git:

$ cd $HOME/yocto
$ git clone git://git.yoctoproject.org/poky -b rocko


$ cd $HOME/yocto/poky
$ git clone git://git.openembedded.org/meta-openembedded -b rocko
poky/
├── bitbake
├── documentation
├── LICENSE
├── meta
├── meta-openembedded
├── meta-poky
├── meta-selftest
├── meta-skeleton
├── meta-yocto-bsp
├── oe-init-build-env
├── README.hardware -> meta-yocto-bsp/README.hardware
├── README.LSB
├── README.poky -> meta-poky/README.poky
├── README.qemu
└── scripts

Initializing the Build Environment

From the parent directory your Source Directory, initialize your environment and provide a meaningful Build Directory name:

$ cd $HOME/yocto/poky
$ source oe-init-build-env

At this point, the build directory has been created for you and it is now your current working directory. This is the default tree you should have to build.


poky/
├── bitbake
├── build          <----- run bitbake inside here
├── documentation
├── LICENSE
├── meta
├── meta-openembedded
├── meta-poky
├── meta-selftest
├── meta-skeleton
├── meta-yocto-bsp
├── oe-init-build-env
├── README.hardware -> meta-yocto-bsp/README.hardware
├── README.LSB
├── README.poky -> meta-poky/README.poky
├── README.qemu
└── scripts

Edit the configuration files

Edit $HOME/yocto/poky/build/conf/bblayers.conf


# POKY_BBLAYERS_CONF_VERSION is increased each time build/conf/bblayers.conf
# changes incompatibly
POKY_BBLAYERS_CONF_VERSION = "2"

BBPATH = "${TOPDIR}"
BBFILES ?= ""

BBLAYERS ?= " \
 /home/koan/yocto/poky/meta \
 /home/koan/yocto/poky/meta-poky \
 /home/koan/yocto/poky/meta-yocto-bsp \
 /home/koan/yocto/poky/meta-openembedded/meta-oe \
 "

Remember also to edit the file $HOME/yocto/poky/build/conf/local.conf and check the following variables:

MACHINE ?= "qemuarm"
DISTRO ?= "poky"
PACKAGE_CLASSES ?= "package_ipk"
INHERIT += "rm_work"

Building the Image

At this point, you need to select an image to build. If this is your first build using the Yocto Project, you should try the smallest and simplest image:

$ bitbake core-image-minimal  

Now you just wait for the build to finish.

Starting the QEMU Emulator

Before you start the QEMU emulator, be sure you have already to set up the emulation environment.

The following command setup the emulation environment and launch QEMU.

$ runqemu qemuarm

Or if you prefer, open a new shell terminal, setup the environment again and run

$ runqemu qemuarm nographic

Building cross-compiler

If you want you can create a re-distribuible cross-compiler targeted at your MACHINE.

$ bitbake meta-toolchain