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git clone-ing a package into a workspace is in almost all cases not enough to get it to build.

See #q252478 for the proper procedure.

git clone-ing a package into a workspace is in almost all cases not enough to get it to build.

See #q252478 for the proper procedure.

Edit:

im getting stuck on the error
pi@raspberrypi:~/ros_catkin_ws $ rosdep install --from-paths src --ignore-src --rosdistro kinetic
ERROR: the following packages/stacks could not have their rosdep keys resolved to system dependencies:
orocos_kinematics_dynamics: No definition of [python_orocos_kdl] for OS version [stretch]
i have cloned this git https://github.com/orocos/orocos_kinematics_dynamics in the src file but rosdep install is still not recognizing it. any suggestions?

I just tried this myself and with just orocos_kinematics_dynamics and robot_localization in the source space of a workspace I get no complaints from rosdep (but that is on Ubuntu-Xenial+ROS-Kinetic on amd64).

The error essentially tells you that orocos_kinematics_dynamics states a dependency on python_orocos_kdl, but rosdep can't find that package. That would be strange, as it is part of the same repository. Can you make sure that you've cloned the orocos_kinematics_dynamics repository correctly (ie: does it show up in tree -d -L 2 $HOME/ros_catkin_ws/src)?