CMake error in evarobot_simulator

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Hello all, someone can help me solve this error? I got it when building the package evarobot_simulation:

  CMake Error at /opt/ros/indigo/share/catkin/cmake/catkinConfig.cmake:75 (find_package):
  Could not find a package configuration file provided by "im_msgs" with any
  of the following names:

    im_msgsConfig.cmake
    im_msgs-config.cmake

  Add the installation prefix of "im_msgs" to CMAKE_PREFIX_PATH or set
  "im_msgs_DIR" to a directory containing one of the above files.  If
  "im_msgs" provides a separate development package or SDK, be sure it has
  been installed.
  Call Stack (most recent call first):
  evarobot_simulator/evarobot_gazebo/CMakeLists.txt:4 (find_package)