Installing Dependencies Error

Question

Installing Dependencies Error

abdksyed opened this issue 4 years ago · comments

Hi, (Noob Here)
I am very new to ROS and Robotics in general. I was trying to clone and install all dependencies on my ubuntu 18.04.5(on virtual box), using following commands

sudo apt install -y python-rosdep
cd <your_ws>/src
git clone --recursive https://github.com/chvmp/champ
git clone https://github.com/chvmp/champ_teleop
cd ..
rosdep install --from-paths src --ignore-src -r -y

I created a folder and cloned, and inside my folder, trying to run

rosdep install --from-paths src --ignore-src -r -y

But it's giving me an error:

ERROR: the following packages/stacks could not have their rosdep keys resolved
to system dependencies (ROS distro is not set. Make sure `ROS_DISTRO` environment
variable is set, or use `--rosdistro` option to specify the distro, e.g. `--rosdistro indigo`):

I even tried,

rosdep install --from-paths src --ignore-src --rosdistro melodic -r -y

But it isn't working. Can you please help me out.

And sorry, if it is a very basic and stupid question.

Regards

Juan Miguel Jimeno · Answer 1 · Tue Oct 13 2020 22:37:06 GMT+0800 (China Standard Time)

Hi,

Can you try the following?
source /opt/ros/melodic/setup.bash
cd <your_catkin_ws>
source devel/setup.bash

Then continue with rosdep ...

abdksyed · Answer 2 · Tue Oct 13 2020 22:59:21 GMT+0800 (China Standard Time)

Hi,
I tried running the source command,
But it's giving

bash: /opt/ros/melodic/setup.bash: No such file or directory

I also ran

sudo rosdep init
rosdep update

But same error even after updating.

Juan Miguel Jimeno · Answer 3 · Tue Oct 13 2020 23:10:54 GMT+0800 (China Standard Time)

Might be related to this: https://answers.ros.org/question/253480/bash-optroskineticsetupbash-no-such-file-or-directory/

abdksyed · Answer 4 · Tue Oct 13 2020 23:16:27 GMT+0800 (China Standard Time)

Thanks for your reply, I check the link and opened the .bashrc and searched for the line

source /opt/ros/......

There is no such line.

My Ubuntu is a clean install which I did just now.

abdksyed · Answer 5 · Tue Oct 13 2020 23:23:51 GMT+0800 (China Standard Time)

When installing, python-rosdep.
It's automatically giving

Note, selecting 'python-rosdep2' instead of 'python-rosdep'

Is this a problem?

Juan Miguel Jimeno · Answer 6 · Tue Oct 13 2020 23:25:59 GMT+0800 (China Standard Time)

can you please post what's the output when you run this command:
ls /opt/ros

abdksyed · Answer 7 · Tue Oct 13 2020 23:30:05 GMT+0800 (China Standard Time)

ls: cannot access '/opt/ros': No such file or directory

Juan Miguel Jimeno · Answer 8 · Tue Oct 13 2020 23:32:35 GMT+0800 (China Standard Time)

Sorry, silly question. Have you installed ROS? http://wiki.ros.org/melodic/Installation/Ubuntu

abdksyed · Answer 9 · Tue Oct 13 2020 23:34:37 GMT+0800 (China Standard Time)

I am a huge nooooooooooob.
I thought

sudo apt install -y python-rosdep

will install ros.

I am extremely sorry for all this questions and issues without installing ROS on the first hand.
I Will install it and repeat the process and update.
Thanks.

Juan Miguel Jimeno · Answer 10 · Tue Oct 13 2020 23:39:35 GMT+0800 (China Standard Time)

No worries. It happens. :) I'll close this for now. Feel free to open a new one if you have any more doubts.