Yocto构建间歇性失败：dwarfsrcfiles不存在问题求助

问题背景 #

使用Yocto Dunfell版本时，某应用出现间歇性构建失败，报错如下：

ERROR: my-app-1.0.52-213f116 do_package: Fatal errors occurred in subprocesses:
[Errno 2] No such file or directory: 'dwarfsrcfiles': 'dwarfsrcfiles': Traceback (most recent call last):
  File "/var/lib/jenkins/workspace/la_meta-my-layer_check-build/my-yocto-sdk/poky/meta/lib/oe/utils.py", line 280, in run
    ret = self._target(*self._args, **self._kwargs)
  File "/var/lib/jenkins/workspace/la_meta-my-layer_check-build/my-yocto-sdk/poky/meta/classes/package.bbclass", line 405, in splitdebuginfo
    sources = source_info(file, d)
  File "/var/lib/jenkins/workspace/la_meta-my-layer_check-build/my-yocto-sdk/poky/meta/classes/package.bbclass", line 353, in source_info
    output = subprocess.check_output(cmd, universal_newlines=True, stderr=subprocess.STDOUT)
  File "/usr/lib/python3.7/subprocess.py", line 395, in check_output
    **kwargs).stdout
  File "/usr/lib/python3.7/subprocess.py", line 472, in run
    with Popen(*popenargs, **kwargs) as process:
  File "/usr/lib/python3.7/subprocess.py", line 775, in __init__
    restore_signals, start_new_session)
  File "/usr/lib/python3.7/subprocess.py", line 1522, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'dwarfsrcfiles': 'dwarfsrcfiles'

已尝试的操作：

• 添加PARALLEL_MAKE = ""，未解决问题
• 设置PARALLEL_MAKE = "-j 20"，导致每次构建必败

补充信息：

• 配方未修改打包步骤
• dwarfsrcfiles实际已构建完成，失败后可正常运行
• 升级至Kirkstone版本后问题仍存在

解决方案 #

1. 显式添加构建依赖 #

问题根源是do_package阶段未正确等待dwarfsrcfiles-native完成安装，在配方中添加以下内容，强制依赖关系：

DEPENDS += "dwarfsrcfiles-native"
do_package[depends] += "dwarfsrcfiles-native:do_populate_sysroot"

该配置确保do_package必须在dwarfsrcfiles-native的do_populate_sysroot步骤完成后执行，保证工具已被安装到构建环境的PATH中。

2. 确保PATH包含工具路径 #

如果依赖关系已存在但环境变量未正确设置，可在配方中显式将dwarfsrcfiles所在目录加入do_package阶段的PATH：

do_package[env] += "PATH=${STAGING_BINDIR_NATIVE}:${PATH}"

STAGING_BINDIR_NATIVE是Yocto中存放原生工具的目录，dwarfsrcfiles默认安装在此处。

3. 限制打包阶段的并行度 #

PARALLEL_MAKE控制的是编译阶段的并行，打包阶段的并行由阶段级配置控制。可在配方中强制打包阶段单线程执行：

do_package[parallel] = "1"

验证 #

添加上述任意配置后，清理应用的构建状态（bitbake -c clean my-app），重新执行构建，观察是否仍出现找不到dwarfsrcfiles的错误。

内容的提问来源于stack exchange，提问作者parsley72