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1 | initial version |
These are linker errors, indicating that you don't link against (at least) the tf
library.
Did you create the package using the command shown in the tutorial? Specifically, this:
catkin_create_pkg learning_tf tf roscpp rospy turtlesim
If you can show the find_package(catkin REQUIRED COMPONENTS ..)
part of your CMakeLists.txt
, we may be able to spot what is wrong or missing.
2 | No.2 Revision |
These are linker errors, indicating that you don't link against (at least) the tf
library.
Did you create the package using the command shown in the tutorial? Specifically, this:
catkin_create_pkg learning_tf tf roscpp rospy turtlesim
If you can show the find_package(catkin REQUIRED COMPONENTS ..)
part of your CMakeLists.txt
, we may be able to spot what is wrong or missing.
Edit:
add_executable(turtle_tf_broadcaster src/turtle_tf_broadcaster.cpp) target_link_libraries(turtle_tf_broadcaster ${catkin_LIBRARIES}) cmake_minimum_required(VERSION 2.8.3) project(learning_tf) find_package(catkin REQUIRED COMPONENTS roscpp rospy tf turtlesim )
This would appear to be a problem of statement order.
It's best not to have the add_executable(..)
and target_link_libraries(..)
lines at the top of your file.
Move those two lines below the find_package(catkin ..)
line.
I expect things to start working then.
Finally, if you haven't yet, you may want to lookup a tutorial or two about CMake. That will make a lot of things related to build scripts and the kinds of errors you posted this question about much clearer.