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I followed this link http://www.cnblogs.com/freedomshe/archive/2013/05/16/configure_eclipse_in_catkin.html After following this link, problem solved. ROS source packages can be found in build directory that was imported in eclipse. we can not find the packages directly in eclipse existing projects while importing. we have to first import build directory, it has a source directory for all our packages. It is important to build the project in eclipse (ctrl+b) immediately after importing to avoid semantic errors.