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Difficulty setting up Eclipse

asked 2011-05-29 14:30:08 -0500

tschoni gravatar image

updated 2014-01-28 17:09:45 -0500

ngrennan gravatar image

Hi everyone,

I'm trying to set up Eclipse to use as IDE for my ROS packages. I decided to go with Eclipse above any other IDE because it's listed first in the ROSwiki. http://www.ros.org/wiki/IDEs I tried to follow steps 1-4 so far. I'm afraid a few things went wrong tough:

PROBLEM 1: ROSwiki Instructions step 4: Properties --> C/C++ Make Project --> Environment, and check whether the following environment variables are assigned to the correct values:

ROS_ROOT

ROS_PACKAGE_PATH

PYTHONPATH

PATH

My issue: These variables were added, also in my case, but I dont understand their assign value: for e.g. path the value the value is set to /opt/ros/diamondback/ros/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games which is also what i get if using "echo $PATH" ... is this correct? is this valid path? why to "mulitple" locations

PROBLEM 2: If I have a look at the binaries in my packate (I use the "beginners_tutorial" package as described on the ROSwiki) there is the "listener" and "talker" but they contain garbage like ELF �U RHCF�* ���&�DMh( )�

now if i expand the "talker" i also do find the "correct" code in a cpp file. But it seems something went wrong anyway if I have somethink like to above, no?

PROBLEM 3: under "Problems" I get one warning Description Resource Path Location Type Invalid project path: Include path not found (/opt/ros/diamondback/ros/core/roslib/msg_gen/cpp/include). beginner_tutorials-RelWithDebInfo@beginner_tutorials pathentry Path Entry Problem

PROBLEM 4: I just cannot build the project, the build button is greyed out.

Really glad for any help with my problems. Many thanks in advance.

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answered 2011-05-29 15:53:05 -0500

Bart gravatar image

Problem 1 is not a problem, it is normal. The path variable applies to all applications not just ROS so it points to the typical Linux directories.

Problem 2 doesn't seem like a problem either. Binary files are executable machine code. You aren't expected to look at them with a text editor. You would need a debugger or disassembler to make any sense of them.

3 - I assume the "Problems" heading you mention is actually "Console" window? Make sure the missing path actually exists then Go to Project/Properties and add the missing include path. It should have been included when you imported the project after doing the make project-eclipse, if your original version of the talker/listener was successfully compiling/running from the command line development steps in the tutorial.

Problem 4 is simple when you know how (but not when you don't). If the file has not been edited since the last successful compile, the Project/Build Project option is greyed out. Go to the source file, enter a single space somewhere and try again.

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p.s. - don't forget step 5 of the tutorial or your application won't run properly and start roscore first. I recommend getting familiar with the text editor/rosmake process as described in the simple tutorials first before trying Eclipse. Learn about the manfest.xml and CMakeLists.txt files first.
Bart gravatar image Bart  ( 2011-05-29 15:57:01 -0500 )edit
Re problem #3: That warning can safely be ignored. (@Bart: it is actually the "Problems" view, not the "Console" view.) It stems from roslib incorrectly exporting msg_gen/cpp/include in its manifest.xml, but that dir doesn't exist. If you like, you can delete the path from Project/Properties.
Martin Günther gravatar image Martin Günther  ( 2011-05-29 20:37:52 -0500 )edit
very very absolutely happy, first I was skeptical that so many "problems" show up, but turns out none of them very real ones :) it all works perfectly fine, thanks for the advice
tschoni gravatar image tschoni  ( 2011-05-29 21:34:25 -0500 )edit
Thanks Gunther. "Problems" is a window I have never used. I will give it a try.
Bart gravatar image Bart  ( 2011-05-31 17:36:35 -0500 )edit

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Asked: 2011-05-29 14:30:08 -0500

Seen: 1,844 times

Last updated: May 29 '11