查看当前版本
pkg-config --modversion opencv 在~/.bashrc最后添加如下内容：
CMAKE_INSTALL_PREFIX=/usr/local/opencv3
export PKG_CONFIG_PATH=/usr/local/opencv3/lib/pkgconfig
export LD_LIBRARY_PATH=/usr/local/opencv3/lib然后执行：
source ~/.bashrc原文：https://www.cnblogs.com/chay/p/10291263.html