&引用；opencv2：没有这样的文件或目录；在试图建立黑暗的时候？

我正在尝试使用OpenCV和CUDA的深色。我根据以下说明安装了darknet：

我根据以下说明安装了CUDA：

最后，我按照以下说明安装了OpenCV：

然后，我在bashrc的末尾添加了以下行：

export PATH=/usr/local/cuda-11.1/bin${PATH:+:${PATH}}
export LD_LIBRARY_PATH=/usr/local/cuda-11.1/lib64${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}
export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig${PKG_CONFIG_PATH:+:${PKG_CONFIG_PATH}}

接下来，我修改了darknet目录中的Makefile，使GPU=1，OPENCV=1。我重新制作了，遇到了一大堆重复的错误，说：

No package 'opencv' found
gcc -Iinclude/ -Isrc/ -DOPENCV `pkg-config --cflags opencv`  -DGPU -I/usr/local/cuda/include/ -Wall -Wno-unused-result -Wno-unknown-pragmas -Wfatal-errors -fPIC -Ofast -DOPENCV -DGPU -c ./src/lstm_layer.c -o obj/lstm_layer.o
Package opencv was not found in the pkg-config search path.
Perhaps you should add the directory containing `opencv.pc'
to the PKG_CONFIG_PATH environment variable

我检查了一下，虽然我已经将目录“/usr/local/lib/pkgconfig”添加到我的PKG_CONFIG_路径中，但是那里没有opencv.pc文件。我在谷歌上搜索了这个，并阅读了一个建议手动创建文件的答案，所以我就是这么做的，内容如下：

prefix=/usr
exec_prefix=${prefix}
includedir=${prefix}/include
libdir=${exec_prefix}/lib

Name: opencv
Description: The opencv library
Version: 2.x.x
Cflags: -I${includedir}/opencv -I${includedir}/opencv2
Libs: -L${libdir} -lopencv_calib3d -lopencv_imgproc -lopencv_contrib -lopencv_legacy -l

这解决了上面提到的重复错误，但我在执行以下操作时仍会遇到类似的错误：

./src/image_opencv.cpp:5:10: fatal error: opencv2/opencv.hpp: No such file or directory
    5 | #include "opencv2/opencv.hpp"
      |          ^~~~~~~~~~~~~~~~~~~~
compilation terminated.

我不确定我是否修复了第一个问题，这是一个单独的问题，或者第一个修复只是修复了一个症状，而不是问题。从那时起，我还尝试：

sudo apt install libopencv-dev

毫无效果

pkg-config --modversion

产生：

2.x.x

pkg-config --cflags opencv

产生：

[code]
-I/usr/include/opencv -I/usr/include/opencv2
[/code]

---

任何帮助都将不胜感激。我正在运行Ubuntu20.04，内核5.4.0-53-generic。

我尝试了这个，它成功了，创建

opencv.pc

文件，其中包含以下内容：

# Package Information for pkg-config

prefix=/usr
exec_prefix=${prefix}
libdir=${prefix}/lib/x86_64-linux-gnu
includedir_new=${prefix}/include/opencv4

Name: OpenCV
Description: Open Source Computer Vision Library
Version: 4.5.0
Libs: -L${libdir} -lopencv_dnn -lopencv_ml -lopencv_objdetect -lopencv_shape -lopencv_stitching -lopencv_superres -lopencv_videostab -lopencv_calib3d -lopencv_features2d -lopencv_highgui -lopencv_videoio -lopencv_imgcodecs -lopencv_video -lopencv_photo -lopencv_imgproc -lopencv_flann -lopencv_core
Libs.private: -ldl -lm -lpthread -lrt
Cflags: -I${includedir_new}

---

并将其放入

/usr/local/lib/pkgconfig/

我尝试了这个方法，它成功了，用以下内容创建

opencv.pc

文件：

# Package Information for pkg-config

prefix=/usr
exec_prefix=${prefix}
libdir=${prefix}/lib/x86_64-linux-gnu
includedir_new=${prefix}/include/opencv4

Name: OpenCV
Description: Open Source Computer Vision Library
Version: 4.5.0
Libs: -L${libdir} -lopencv_dnn -lopencv_ml -lopencv_objdetect -lopencv_shape -lopencv_stitching -lopencv_superres -lopencv_videostab -lopencv_calib3d -lopencv_features2d -lopencv_highgui -lopencv_videoio -lopencv_imgcodecs -lopencv_video -lopencv_photo -lopencv_imgproc -lopencv_flann -lopencv_core
Libs.private: -ldl -lm -lpthread -lrt
Cflags: -I${includedir_new}

---

然后将其放入

/usr/local/lib/pkgconfig/

可以使用命令

env

，并显示PATH、LD\u LIBRARY\u PATH、，和PKG_-CONFIG_-PATH？PATH=/usr/local/cuda-11.1/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/bin:/usr/games:/usr/local/games:/snap/bin LD_-LIBRARY_-PATH=/usr/local/cuda-11.1/lib64 PKG_-CONFIG_-PATH=/usr/local/lib/PKG-CONFIG这正是我所担心的。你能使用命令

env

并给我显示PATH、LD_-lib-lib-PATH的值吗，和PKG_-CONFIG_-PATH？PATH=/usr/local/cuda-11.1/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin LD_-LIBRARY_-PATH=/usr/local/cuda-11.1/lib64 PKG_-CONFIG_-PATH=/usr/local/lib/PKG/lib/PKG这正是我担心的；此对话已结束。评论不用于扩展讨论；这段对话已经结束。