安裝好后opencv后執(zhí)行下面這條語(yǔ)句的時(shí)候出錯(cuò)：
pkg-config --cflags opencv
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
No package 'opencv' found
原因： 缺失了opencv.pc這個(gè)配置信息文件
解決方法： 創(chuàng)建opencv.pc文件，注意添加的路徑
cd /usr/local/lib
ls pkgconfig // 如果沒(méi)有該文件夾 進(jìn)行創(chuàng)建 一般都有
sudo mkdir pkgconfig
cd pkgconfig
sudo touch opencv.pc // 查看是否有opencv4.pc 有的話復(fù)制一下
然后在opencv.pc中添加以下信息，注意這些信息需要與自己安裝opencv時(shí)的庫(kù)路徑對(duì)應(yīng)：
prefix=/usr/local
exec_prefix=${prefix}
includedir=${prefix}/include
libdir=${exec_prefix}/lib
Name: opencv
Description: The opencv library
Version:4.0.1
Cflags: -I${includedir}/opencv4
Libs: -L${libdir} -lopencv_shape -lopencv_stitching -lopencv_objdetect -lopencv_superres -lopencv_videostab -lopencv_calib3d -lopencv_features2d -lopencv_highgui -lopencv_videoio -lopencv_imgcodecs -lopencv_video -lopencv_photo -lopencv_ml -lopencv_imgproc -lopencv_flann -lopencv_core
保存退出，然后將文件導(dǎo)入到環(huán)境變量：
export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig
再執(zhí)行 pkg-config --cflags --libs opencv時(shí)輸出結(jié)果如下：文章來(lái)源：http://www.zghlxwxcb.cn/news/detail-606152.html
-I/usr/local/include/opencv4 -L/usr/local/lib \
-lopencv_shape -lopencv_stitching -lopencv_objdetect \
-lopencv_superres -lopencv_videostab -lopencv_calib3d \
-lopencv_features2d -lopencv_highgui -lopencv_videoio \
-lopencv_imgcodecs -lopencv_video -lopencv_photo -lopencv_ml \
-lopencv_imgproc -lopencv_flann -lopencv_core
然后進(jìn)行 make 如果還是有問(wèn)題 make之前先make clean 再次嘗試 一般都會(huì)成功
還是有問(wèn)題的話 看一下MakeFile 文件 是否添加opencv的頭文件和庫(kù)文件路徑文章來(lái)源地址http://www.zghlxwxcb.cn/news/detail-606152.html
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