g++编译opencv项目

转载来自：http://blog.csdn.net/zhang_shuai12/article/details/53565446

先安装好opencv和 pkg-config. 
看一下pkg-config设置的目录是否正确, 假设opencv的目录是/usr/loacal/include 和 /usr/local/lib:

$ pkg-config --cflags --libs opencv-I/usr/local/include/opencv -I/usr/local/include  -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
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linux下编译命令：

g++ test.cpp -o test `pkg-config --cflags --libs opencv`