/ usr / bin / ld：找不到-lopencv

Question

我尝试按照此tutorial安装opencv ubuntu 14.04。在执行此操作后，我在QT中创建了一个C ++项目。显示错误消息：

    g++ -m64 -o test main.o mainwindow.o moc_mainwindow.o  
     -L/usr/X11R6/lib64 -L/usr/local/lib -lopencv_core -lopencv_imgproc -lopencv_highgui -lopencv_ml -lopencv_video -lopencv_features2d -lopencv_calib3d -lopencv_objdetect -lopencv_contrib 
    -lopencv_legacy -lopencv_flann 
    -lopencv_xfeatures2d -lopencv_imgcodecs -lQt5Widgets -L/usr/lib/x86_64-linux-gnu -lQt5Gui -lQt5Core -lGL -lpthread 


//error is here
    /usr/bin/ld: cannot find -lopencv_contrib
    /usr/bin/ld: cannot find -lopencv_legacy
    /usr/bin/ld: cannot find -lopencv_xfeatures2d
    collect2: error: ld returned 1 exit status
    make: *** [test] Error 1
    06:00:12: The process "/usr/bin/make" exited with code 2.
    Error while building/deploying project test (kit: Desktop)
    When executing step 'Make'

谢谢：）