undefined reference to everything

edit

Hi,

I have a package in my workspace that uses openCV and cv_bridge. I needed the cuda module of openCV, but it doesn't exist in the default openCV of ROS. I installed another version of openCV that included the cuda modules, I tried to link my workspace and my package to the new openCV and I had lots of errors like "undefined reference to 'cv_bridge::...' ", "undefined reference to 'ros::init::...' ", "undefined reference to 'rosbag::...' ". I tried to solve the problems but I wasn't able, so I tried to return to the default openCV (it worked fine with my package before I tried to use cuda, etc.), but it gives the same errors now. I have uninstalled and reinstalled ROS, deleted my workspace and the package and I have created them again, but I have the same errors. I have all the dependencies in the CMakeLists.txt.

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EDIT

For more information, I have created now a new node with a loop that does nothing but ros::spinOnce(); loop_rate.sleep(); in a different package, and I have the same undefined reference to errors about ros::init(...) and ros::NodeHandle::NodeHandle(...).

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EDIT 2

I have exported my package to another computer with ros and it does work, so I think it is a problem in my ros installation or something wrong in the configuration of the computer or ubuntu (maybe CMake, g++ or gcc?). Please does anyone know which could be the problem? Please I really need help!

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These are some of the errors:

undefined reference to 'cv_bridge::toCvCopy(boost::shared_ptr<sensor_msgs::Image_<std::allocator<void> > const> const&, std::string const&)'
undefined reference to 'ros::console::initializeLogLocation(ros::console::LogLocation*, std::string const&, ros::console::levels::Level)'
undefined reference to 'ros::init(int&, char**, std::string const&, unsigned int)'
undefined reference to 'ros::NodeHandle::NodeHandle(std::string const&, std::map<std::string, std::string, std::less<std::string>, std::allocator<std::pair<std::string const, std::string> > > const&)'
undefined reference to 'rosbag::Bag::open(std::string const&, unsigned int)'
undefined reference to 'rosbag::TypeQuery::TypeQuery(std::string const&)'
undefined reference to 'rosbag::MessageInstance::getTopic() const'
undefined reference to 'pcl_ros::transformPointCloud(std::string const&, sensor_msgs::PointCloud2_<std::allocator<void> > const&, sensor_msgs::PointCloud2_<std::allocator<void> >&, tf::TransformListener const&)'
undefined reference to 'pcl::PCDWriter::writeBinary(std::string const&, pcl::PCLPointCloud2 const&, Eigen::Matrix<float, 4, 1, 0, 4, 1> const&, Eigen::Quaternion<float, 0> const&)'
undefined reference to 'pcl::PCDWriter::writeASCII(std::string const&, pcl::PCLPointCloud2 const&, Eigen::Matrix<float, 4, 1, 0, 4, 1> const&, Eigen::Quaternion<float, 0> const&, int)'
undefined reference to 'rosbag::MessageInstance::getMD5Sum() const'
undefined reference to 'rosbag::Bag::readField(std::map<std::string, std::string, std::less<std::string>, std::allocator<std::pair<std::string const, std::string> > > const&, std::string const&, bool, std::string&) const'
undefined reference to 'rosbag::Bag::readField(std::map<std::string, std::string, std::less<std::string>, std::allocator<std::pair<std::string const, std::string> > > const&, std::string ...