创建一个自己的Atmel Yocto Project

目标创建一个自定义的最小系统

准备工作，首先安装必要的工作环境

1.创建一个版本库

mkdir my_atmel

cd my_atmel

2.通过git下载poky

git clone git://git.yoctoproject.org/poky -b rocko

3.通过git下载meta-openembedded

git clone git://git.openembedded.org/meta-openembedded -b rocko

4.通过git下载meta-qt5

git clone git://code.qt.io/yocto/meta-qt5.git

cd meta-qt5

git checkout v5.9.4

cd ..

5.通过git下载meta-atmel

git clone git://github.com/linux4sam/meta-atmel.git -b rocko

开始构建系统

1.打开poky文件夹

cd poky

2.初始化版本库

source oe-init-build-env build-atmel

3.添加meta-atmel的配置文件,并进行初始化设置

vim conf/bblayers.conf

参考设置：

# POKY_BBLAYERS_CONF_VERSION is increased each time build/conf/bblayers.conf

# changes incompatibly

POKY_BBLAYERS_CONF_VERSION = "2"

BBPATH = "${TOPDIR}"

BBFILES ?= ""

BSPDIR := "${@os.path.abspath(os.path.dirname(d.getVar('FILE', True)) + '/../../..')}"

BBLAYERS ?= " \

${BSPDIR}/poky/meta \

${BSPDIR}/poky/meta-poky \

${BSPDIR}/poky/meta-yocto-bsp \

${BSPDIR}/meta-atmel \

${BSPDIR}/meta-openembedded/meta-oe \

${BSPDIR}/meta-openembedded/meta-networking \

${BSPDIR}/meta-openembedded/meta-python \

${BSPDIR}/meta-openembedded/meta-multimedia \

${BSPDIR}/meta-qt5 \

BBLAYERS_NON_REMOVABLE ?= " \

${BSPDIR}/poky/meta \

${BSPDIR}/poky/meta-poky \

4.配置local.conf 配置文件

主要配置以下几点，仅供参考，可以根据自己需求调整，调整内容必须是当前SOCs/MCHINE 支持的。不能随便填写。

MACHINE ??= "sama5d3-xplained"

[...]

DL_DIR ?= "your_download_directory_path"

[...]

PACKAGE_CLASSES ?= "package_ipk"

[...]

USER_CLASSES ?= "buildstats image-mklibs"

DISTRO = "poky-atmel"

5. 创建一个最小核心（该过程耗时较长，根据个人的网速决定）

bitbake core-image-minimal

6.如果需要添加QT，那么需要在local.conf中添加配置

LICENSE_FLAGS_WHITELIST += "commercial"

SYSVINIT_ENABLED_GETTYS = ""

7.创建一个Atmel 演示镜像（该过程耗时较长，根据个人的网速决定）

bitbake atmel-qt5-demo-image

完成后会输出相关信息

Typical bitbake output

======================

Build Configuration:

BB_VERSION = "1.36.0"

BUILD_SYS = "x86_64-linux"

NATIVELSBSTRING = "universal"

TARGET_SYS = "arm-poky-linux-gnueabi"

MACHINE = "sama5d2-xplained"

DISTRO = "poky-atmel"

DISTRO_VERSION = "2.4.2"

TUNE_FEATURES = "arm armv7a vfp thumb neon callconvention-hard cortexa5"

TARGET_FPU = "hard"

创建一个自己的Atmel Yocto Project

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