Yocto开发篇 | Poky添加一个demo层

最新推荐文章于 2024-12-07 11:09:28 发布

原创最新推荐文章于 2024-12-07 11:09:28 发布 · 571 阅读

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#meta-demo #yocto #bitbake #layer #demo layer

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本文详细介绍了如何使用Bitbake创建meta-demo层，添加到构建目录，并执行镜像编译与单独编译Demo层的过程。涉及步骤包括设置环境变量、创建新层、配置bblayers.conf以及实际操作指令。

一、使用bitbake命令创建demo层

$ export PATH=$PATH:/home/neutionwei/poky/bitbake/bin
$ export BBPATH=/home/neutionwei/poky/build
$ cd ~/poky
$ bitbake-layers create-layer meta-demo
NOTE: Starting bitbake server...
Add your new layer with 'bitbake-layers add-layer meta-demo'

二、添加demo层到构建目录

$ cd build
$ bitbake-layers add-layer ../meta-demo
NOTE: Starting bitbake server...

cat命令查看以下bblayer,conf文件，可以看到倒数第二行把meta-demo添加到构建目录！

$ cat 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/neutionwei/proj/yocto/poky/meta \
/home/neutionwei/proj/yocto/poky/meta-poky \
/home/neutionwei/proj/yocto/poky/meta-yocto-bsp \
/home/neutionwei/proj/yocto/poky/meta-demo \
"

三、编译镜像或者单独编译demo层

（1）编译镜像：

$ cd build
$ bitbake core-image-minimal
Parsing recipes: 100% |#################################################################################################| Time: 0:00:17
Parsing of 769 .bb files complete (0 cached, 769 parsed). 1301 targets, 40 skipped, 0 masked, 0 errors.
NOTE: Resolving any missing task queue dependencies

Build Configuration:
BB_VERSION           = "1.46.0"
BUILD_SYS            = "x86_64-linux"
NATIVELSBSTRING      = "universal"
TARGET_SYS           = "x86_64-poky-linux"
MACHINE              = "qemux86-64"
DISTRO               = "poky"
DISTRO_VERSION       = "3.1"
TUNE_FEATURES        = "m64 core2"
TARGET_FPU           = ""
meta                 
meta-poky            
meta-yocto-bsp       
meta-demo            = "my-yocto-3.1:5d47cdf448b6cff5bb7cc5b0ba0426b8235ec478"

Initialising tasks: 100% |##############################################################################################| Time: 0:00:01
Sstate summary: Wanted 0 Found 0 Missed 0 Current 1159 (0% match, 100% complete)
NOTE: Executing Tasks
NOTE: Tasks Summary: Attempted 3156 tasks of which 3156 didn't need to be rerun and all succeeded.