当前位置：文江博客话题详情

如何修复 python `dlib` 错误：“在平面命名空间‘_png_do_expand_palette_rgb8_neon’中找不到符号”？

发布于 2025-01-10 05:26:31 字数 286 浏览 1 评论 0原文

我收到错误：在平面命名空间“_png_do_expand_palette_rgb8_neon”中找不到符号 尽管已为相关 Python 版本安装了 dlib 包，但仍会发生错误。

我正在使用 VSCode，以防相关。

谁能帮我修复这个错误吗？

原文

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

檐上三寸雪 2025-01-17 05:26:36

我最终不得不从源代码安装 dlib：

git clone https://github.com/davisking/dlib.git
cd dlib
python setup.py install --set DLIB_PNG_SUPPORT=1 --compiler-flags "-I/usr/local/include -L/opt/homebrew/lib -lpng"

这是基于 dlib 上的此问题建议安装 libpng 和此问题homebrew 建议添加 --compiler-flags。

安装 libpng 并设置编译器标志并没有使错误消失，绝望中我进入 dlib/image_save/save_png.h 注释掉断言。然而，代码中有一个有用的推荐：

#ifndef DLIB_PNG_SUPPORT
            /* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
                You are getting this error because you are trying to use save_png()
                but you haven't defined DLIB_PNG_SUPPORT.  You must do so to use
                this function.   You must also make sure you set your build environment
                to link against the libpng library.
            !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*/
            COMPILE_TIME_ASSERT(sizeof(image_type) == 0);
#else
...

鉴于我有 libpng，我设置了 DLIB_PNG_SUPPORT 并且构建成功。

然后确保您的虚拟环境处于活动状态（如果适用）并安装它：

python -m pip install .

I ended up having to install dlib from source:

git clone https://github.com/davisking/dlib.git
cd dlib
python setup.py install --set DLIB_PNG_SUPPORT=1 --compiler-flags "-I/usr/local/include -L/opt/homebrew/lib -lpng"

This was based on this issue on dlib which recommends installing libpng and this issue on homebrew which recommends adding the --compiler-flags.

Installing libpng and setting the compiler flags didn't make the error go away, and in desperation I went into dlib/image_save/save_png.h to comment out the assert. However, there was a helpful commend in the code:

#ifndef DLIB_PNG_SUPPORT
            /* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
                You are getting this error because you are trying to use save_png()
                but you haven't defined DLIB_PNG_SUPPORT.  You must do so to use
                this function.   You must also make sure you set your build environment
                to link against the libpng library.
            !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*/
            COMPILE_TIME_ASSERT(sizeof(image_type) == 0);
#else
...

Given that I have libpng, I set DLIB_PNG_SUPPORT and building succeeded.

Then ensure your virtual environment is active (if applicable) and install it:

python -m pip install .

回复收藏 0 原文

浪推晚风 2025-01-17 05:26:33

如果您使用以下命令强制重新安装，应该可以工作：

pip3 install dlib --force-reinstall --no-cache-dir --global-option=build_ext

这为我修复了它。

回复收藏 0 原文

红墙和绿瓦 2025-01-17 05:26:31

对我来说，这是 mac M1 特定问题，通过链接 libpng 解决：（

brew install libpng
export C_INCLUDE_PATH=/opt/homebrew/Cellar/libpng/1.6.37/include
export LIBRARY_PATH=/opt/homebrew/Cellar/libpng/1.6.37/lib
pip3 install dlib --force-reinstall

用您安装的 libpng 版本替换 1.6.37）

For me, this is a mac M1 specific issue, solved by linking libpng:

brew install libpng
export C_INCLUDE_PATH=/opt/homebrew/Cellar/libpng/1.6.37/include
export LIBRARY_PATH=/opt/homebrew/Cellar/libpng/1.6.37/lib
pip3 install dlib --force-reinstall

(replace 1.6.37 by your installed version of libpng)

回复收藏 0 原文

~没有更多了~