OSX Terminal + OpenCV

Very easy setup but took me sometime to follow
Requirements
MacPorts ready
~/.profile ready

Getting the Package 
(http://opencv.willowgarage.com/wiki/Mac_OS_X_OpenCV_Port)

sudo port selfupdate

sudo port install opencv

It will take some time for those installations.

Compiling
http://opencv.willowgarage.com/wiki/CompileOpenCVUsingLinux
1) put

PKG_CONFIG_PATH=/where/you/have/installed/opencv/lib/pkgconfig

export PATH=$PATH:PKG_CONFIG_PATH

in your ~/.profile
2) > source ~/.profile
3) > pkg-config --cflags opencv (should return the include paths to opencv)
4) To compile ur codes

gcc `pkg-config --cflags opencv` `pkg-config --libs opencv` -o my-opencv-prgm my-opencv-prgm.c

This should be it!