how to compile opencv c++ in ubuntu

   1 $ alias opencv="~/.compile_opencv.sh"
   2 $ opencv opencvtest.c
   3 $ ./opencvtest

   1 #!/bin/bash
   2 echo "compiling $1"
   3 if [[ $1 == *.c ]]
   4 then
   5     gcc -ggdb `pkg-config --cflags opencv` -o `basename $1 .c` $1 `pkg-config --libs opencv`;
   6 elif [[ $1 == *.cpp ]]
   7 then
   8     g++ -ggdb `pkg-config --cflags opencv` -o `basename $1 .cpp` $1 `pkg-config --libs opencv`;
   9 else
  10     echo "Please compile only .c or .cpp files"
  11 fi
  12 echo "Output file => ${1%.*}"