How to create a custom msg for arduino ?

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I am trying to create the custom msg for Arduino. I refer the rosserial_client package to generate the custom msg. I created the package simbha_msg for msgs. Package contains the msg file simbha_imu.msg

    Header header
    float64 roll
    float64 pitch
    float64 yaw

I run the command rosrun rosserial_client make_libraries /home/simmu/Desktop/ simbha_msgs/ but its not working as expected. I tried with cpp node as well but that is also not working. It wont give any error or warnings.