Ubuntu16.04卸载其他版本的opencv并安装opencv3.2.0+opencv contrib3.2.0_checking for module 'gtk+-3.0

一、卸载已安装的opencv

1、查看已安装的opencv版本

$  pkg-config --modversion opencv

     首先要找到当初安装opencv的build目录，进入该build目录执行卸载操作

$  sudo make uninstall
$  cd  ..
$  rm -r build

$  rm -r /usr/local/include/opencv2 /usr/local/include/opencv /usr/include/opencv /usr/include/opencv2 /usr/local/share/opencv /usr/local/share/OpenCV /usr/share/opencv /usr/share/OpenCV /usr/local/bin/opencv* /usr/local/lib/libopencv*
$  cd /usr
$  find . -name "*opencv*" | xargs sudo rm -rf

$  apt-get remove-doc opencv-data python-opencv

    如果找不见当时的安装目录，可能被删除了，就需要重新安装一遍，安装之后就可以进行uninstall操作了！

二、安装opencv3.2.0 + opencv contrib3.2.0

1、下载opencv3.2.0 以及 opencv contrib3.2.0

      opencv 3.2.0下载链接：

           链接1：Download1、Download2

           链接2：