快速开始使用Yocto

最新推荐文章于 2025-07-05 13:42:57 发布

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最新推荐文章于 2025-07-05 13:42:57 发布 · 2.2k 阅读

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CC 4.0 BY-SA版权

本文档介绍了在Red Hat Enterprise Linux Server 7.5环境下使用Yocto的步骤，包括配置python环境，构建core-image-minimal目标，创建并完善新recipe（myapp.bb）的过程，如设置LICENSE、SRC_URI、SRCREV，处理编译和安装任务。

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环境：

Red Hat Enterprise Linux Server release 7.5 (Maipo)

git version 1.8.3.1
Python 2.7.6

tar (GNU tar) 1.26

操作步骤：

git clone git://git.yoctoproject.org/poky

cd poky/

source oe-init-build-env

bitbake core-image-minimal 报错：

Traceback (most recent call last):
  File "/var/fpwork/alice/poky/bitbake/bin/bitbake", line 31, in <module>
    import bb
  File "/var/fpwork/alice/poky/bitbake/lib/bb/__init__.py", line 77, in <module>
    import bb.msg
  File "/var/fpwork/alice/poky/bitbake/lib/bb/msg.py", line 32, in <module>
    import bb.event
  File "/var/fpwork/alice/poky/bitbake/lib/bb/event.py", line 35, in <module>
    import bb.utils
  File "/var/fpwork/alice/poky/bitbake/lib/bb/utils.py", line 37, in <module>
    from commands import getstatusoutput
ImportError: cannot import name getstatusoutput

检查并重新配置python环境，重新执行core-image-minimal target，执行成功：

$ python -V
Python 2.7.5
$ unset PYTHONPATH
$ export PATH="${PATH}:/build/ltesdkroot/Tools/Tools/python/python-3.3.2/bin/"
$ export PATH=/build/ltesdkroot/Tools/Tools/7za/7za-9.20/:$PATH
$ export PATH=/build/ltesdkroot/Tools/Tools/python/python-2.7.6/bin/:$PATH
$ source oe-init-build-env
$ bitbake core-image-minimal

创建新的recipe：

尝试创建空的myapp.bb，报错：

$ mkdir meta/recipes-devtools/myapp
$ touch meta/recipes-devtools/myapp/myapp.bb
$ bitbake myapp
WARNING: Host distribution "RedHatEnterpriseLinuxServer-7.5" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
Loading cache: 100% |############################################################################################################################################################################| ETA:  00:00:00
Loaded 1309 entries from dependency cache.
ERROR: /var/fpwork/alice/poky/meta/recipes-devtools/myapp/myapp.bb: This recipe does not have the LICENSE field set (myapp)                                                                      | ETA:  --:--:--
ERROR: Failed to parse recipe: /var/fpwork/alice/poky/meta/recipes-devtools/myapp/myapp.bb

Summary: There was 1 WARNING message shown.
Summary: There were 2 ERROR messages shown, returning a non-zero exit code.

配置license，参考https://www.yoctoproject.org/docs/latest/ref-manual/ref-manual.html#var-LICENSE：

增