I wanna make camera gazebo plugin so i tried to follow this tutorial

you can check that cpp source and .h files...

but it have some errors when i build it...

gzserver: symbol lookup error:/home/gwkim/light_sensor_ws/devel/lib/libgazebo_light_sensor_plugin.so:undefined symbol: _ZN6gazebo20GazeboRosCameraUtilsC2Ev
 
[gazebo-2] process has died [pid 24539,exit code 127, cmd /opt/ros/indigo/lib/gazebo_ros/gzserver --verbose -e ode /home/gwkim/light_sensor_ws/src/gazebo_light_sensor_plugin/worlds/light.world __name:=gazebo __log:=/home/gwkim/.ros/log/f9e256d6-caee-11e5-8656-001e6595291c/gazebo-2.log].
log file:/home/gwkim/.ros/log/f9e256d6
 
-caee-11e5-8656-001e6595291c/gazebo-2*.log

i tried to serch its answer but i didnt find correct solution

i need your help.

im using 14.04 ubuntu and indigo version.

please answer here or send me e-mail please.