Hi!
I have the same problem as mentioned here: Error using rosmsg in "Creating msg and srv" Tutorial
In section 2.2 of this tutorial when typing the command
$ rosmsg show beginner_tutorials/Num
I don't get
init64 num
but
Unable to load msg [beginner_tutorials/Num]: Cannot locate message [Num]: unknown package [beginner_tutorials] on search path ...
In the other thread the solution is: I should simply run:
$ cd ~/catkin_ws/ then > $ catkin_make
But there I get the Error:
CMake Error at /home/user/catkin_ws/build/beginner_tutorials/cmake/beginner_tutorials-genmsg.cmake:3 (message):
Could not find messages which '/home/user/catkin_ws/src/beginner_tutorials/msg/Num.msg' depends on.
Did you forget to specify generate_messages(DEPENDENCIES ...)?Cannot locate message [init64] in package [beginner_tutorials] with paths
[['/home/user/catkin_ws/src/beginner_tutorials/msg']] Call Stack (most recent call first): /opt/ros/indigo/share/genmsg/cmake/genmsg-extras.cmake:304 (include)
beginner_tutorials/CMakeLists.txt:68 (generate_messages)-- Configuring incomplete, errors occurred! See also "/home/user/catkin_ws/build/CMakeFiles/CMakeOutput.log". See also "/home/user/catkin_ws/build/CMakeFiles/CMakeError.log". make: *** [cmake_check_build_system] Error 1 Invoking "make cmake_check_build_system" failed
What do I do wrong. I changed the CMakeList.txt exactly as said in the tutorials and checked it a lot of times. And I put in
catkin_package(CATKIN_DEPENDS message_runtime)
Can anybody help me out here? Thanks!!
Edit:
Here is the CMakeLists.txt (I removed the commented parts):
cmake_minimum_required(VERSION 2.8.3)
project(beginner_tutorials)
find_package(catkin REQUIRED COMPONENTS
roscpp
rospy
std_msgs
message_generation
)
add_message_files(
FILES
Num.msg
)
generate_messages(
DEPENDENCIES
std_msgs
)
include_directories(
${catkin_INCLUDE_DIRS}
)
And here the package.xml:
<?xml version="1.0"?>
<package>
<name>beginner_tutorials</name>
<version>0.0.0</version>
<description>The package for beginners</description>
<maintainer email="[email protected]">user</maintainer>
<license>TODO</license>
<build_depend>message_generation</build_depend>
<run_depend>message_runtime</run_depend>
<buildtool_depend>catkin</buildtool_depend>
<build_depend>roscpp</build_depend>
<build_depend>rospy</build_depend>
<build_depend>std_msgs</build_depend>
<run_depend>roscpp</run_depend>
<run_depend>rospy</run_depend>
<run_depend>std_msgs</run_depend>
<export>
</export>
</package>
Originally posted by bluefish on ROS Answers with karma: 236 on 2015-02-20
Post score: 1
Original comments
Comment by Andromeda on 2015-02-20:
Did you save the file as said iin the tutorial?
Could you please entirely post your CMakeLists.txt und package.xml ?
Comment by bluefish on 2015-02-20:
Thanks for your comment!
Yes, I saved it here: ~/catkin_ws/src/beginner_tutorials
Comment by bluefish on 2015-02-20:
I put in both files in the edit above.
Comment by jarvisschultz on 2015-02-20:
Does your Num.msg file actually say init64 num? It should say int64 num (you have an extra 'i'). That typing error would explain why you are getting the "Cannot locate message [init64]" when running catkin_make
Comment by Andromeda on 2015-02-20:
And what happen if you type simply:
$ rosmsg show Num
????? without the folder name
Comment by bluefish on 2015-02-20:
Thanks so much javisschultz and Andromeda!! I really put in that extra "i".
And I tried to find that error for hours. So stupid....
Sorry for bothering you with that and thanks again!!
Comment by JarvisRobot on 2016-12-07:
I face the same problem. I changed the CMakeList.txt exactly as said in the tutorials and checked it a lot of times. When I try to ~/catkin_ws/src/beginner_tutorials$ rosmsg show Num,it returns Could not find msg 'Num'. Can anybody help me out here? Thanks!!
Comment by jarvisschultz on 2016-12-08:
The command should be rosmsg show beginner_tutorials/Num