在使用小鱼的yolov5_ros2功能包时，编译环节出现问题
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当
colcon build命令执行后只输出了“summary: 0 packages finished [0.51s]”这样的信息时，这通常意味着colcon没有找到任何要构建的工作空间包（workspace packages）。这可能是因为以下几个原因：- 工作空间未正确设置：确保你已经在包含
yolov5_ros2功能包的ROS 2工作空间目录中执行了colcon build命令。 - CMakeLists.txt或package.xml缺失或不正确：检查
yolov5_ros2功能包中是否包含了必要的CMakeLists.txt和package.xml文件，并且这些文件的内容是正确的。 - colcon未找到包：可能是因为
COLCON_IGNORE文件或.colconignore文件阻止了colcon扫描到该包，或者包的路径没有正确设置。 - 依赖项问题：如果
yolov5_ros2依赖于其他尚未安装或构建的包，colcon也可能不会尝试构建它。
以下是一些解决步骤：
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确认工作空间：
- 切换到你的ROS 2工作空间目录，通常是一个包含
src子目录的目录。 - 确保
yolov5_ros2功能包位于src子目录中。
- 切换到你的ROS 2工作空间目录，通常是一个包含
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检查CMakeLists.txt和package.xml：
- 导航到
yolov5_ros2功能包的目录中。 - 检查是否存在
CMakeLists.txt和package.xml文件，并且它们的内容是正确的。
- 导航到
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检查COLCON_IGNORE或.colconignore：
- 在你的工作空间目录中查找名为
COLCON_IGNORE或.colconignore的文件。 - 确保这些文件没有错误地阻止了colcon扫描到
yolov5_ros2功能包。
- 在你的工作空间目录中查找名为
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检查依赖项：
- 阅读
yolov5_ros2的文档或package.xml文件，了解它的依赖项。 - 确保所有必需的依赖项都已安装。
- 阅读
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重新配置工作空间：
- 在工作空间目录中运行
colcon build --symlink-install来重新配置和构建工作空间。 - 注意
--symlink-install选项，它允许使用符号链接来避免不必要的文件复制，这可以加快构建过程。
- 在工作空间目录中运行
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查看详细输出：
- 你可以通过添加
--verbose或-v选项来运行colcon build命令，以获取更详细的输出信息。 - 这可能会帮助你诊断问题所在。
- 你可以通过添加
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清理工作空间：
- 如果之前的工作空间构建失败了，并且现在出现了这个问题，尝试清理工作空间并重新构建。
- 在工作空间目录中运行
colcon build --packages-select yolov5_ros2 --cmake-args -DCMAKE_BUILD_TYPE=Debug -DCMAKE_CXX_FLAGS="-Wall -Wextra"来单独构建yolov5_ros2包，并添加一些调试标志。
如果以上步骤都不能解决问题，请考虑查看
yolov5_ros2功能包的文档或寻求其维护者的帮助。
以上为生成回答，仅供参考～
- 工作空间未正确设置：确保你已经在包含
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此回复已被删除！ -
此回复已被删除！ -
@小鱼
TypeError: canonicalize_version() got an unexpected keyword argument 'strip_trailing_zero'Failed <<< iocpsupport [2.04s, exited with code 1]
Aborted <<< matrixlib [2.30s]
Aborted <<< ma [2.43s]Summary: 0 packages finished [14.3s]
1 package failed: iocpsupport
2 packages aborted: ma matrixlib
2 packages had stderr output: iocpsupport ma -
@LeeSonFirm https://fishros.org.cn/forum/topic/151/提问前必看-不符合要求的问题拒绝回答
每看出和yolo相关的日志，请提供完整的上下文和操作流程和日志
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@小鱼
请问下好的安装包在哪个目录里面啊，好像关于yolo的包没下载下来 -
@小鱼
找不到yolov5的包
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@LeeSonFirm 下载到哪个目录是你自己决定的
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@小鱼
当时没设置位置，直接粘贴代码了，现在不知道在哪，还有办法找出来吗
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@小鱼
lizijian@lizijian-virtual-machine:~$ pip3 install -i https://pypi.tuna.tsinghua.edu.cn/simple yolov5
/usr/bin/pip3:6: DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html
from pkg_resources import load_entry_point
Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple
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@小鱼
DeprecationWarning: pkg_resources is deprecated as an API.是这个原因没下载下来吗 -
@LeeSonFirm 这个是下好了，下好了的目录有提示
@LeeSonFirm 在 在使用小鱼的yolov5_ros2功能包时，编译环节出现问题 中说：
Requirement already satisfied: yolov5 in ./.local/lib/python3.8/site-packages (7.0.13)
不过这只是依赖，并不是功能包
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@小鱼
是的，我找不到yolov5的功能包，请问后续需要怎样操作呢？ -
@LeeSonFirm 根据教程下载功能包就可以了
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@小鱼
我按照教程用那个pip3 install指令没有下载下来，输入代码之后显示的就是我上面发的 -
@小鱼 是需要我去下载您在GitHub上给的yolov5_ros2的源码吗，然后放到这个依赖所在的目录中进行编译？
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@LeeSonFirm 你看教程，按着教程走就可以了
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@小鱼 我已经严格按照教程执行，可是输入pip3 install -i https://pypi.tuna.tsinghua.edu.cn/simple yolov5之后，我找不到这个功能包，并且无法进行编译
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@小鱼 不好意思，我是小白，刚接触ros，让您费心了
