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setupbash/whydoesros2installse_20.txt
I traced the problem down to the ` install/setup.bash ` file in my ROS2 workspace which I source in .bashrc. It contains the following:
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time source /opt/ros/eloquent/setup.bash real 0m2,167s user 0m1,407s sys 0m0,787s
setupbash/573_162.txt
Copy link
setupbash/LinuxDevelopmentSetu_6.txt
* [ ](../index.html) * [ Installation ](../Installation.html) * Building ROS 2 on Linux * [ Edit on GitHub ](https://github.com/ros2/ros2_documentation/blob/eloquent/source/Installation/Linux-Development-Setup.rst)
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export AMENT_PREFIX_PATH=/opt/ros/dashing export ROS_DISTRO=dashing export ROS_PYTHON_VERSION=3 export ROS_VERSION=2 if [ -z "$LD_LIBRARY_PATH" ]; then export LD_LIBRARY_PATH=/opt/ros/dashing/opt/yaml_cpp_vendor/lib:/opt/ros/dashing/opt/rviz_ogre_vendor/lib:/opt/ros/dashing/lib ...
setupbash/573_328.txt
you can add 'wait' after the last child processes. It saves much time. --- All reactions
setupbash/LinuxDevelopmentSetu_23.txt
* Next steps after installing
setupbash/573_29.txt
Cancel Submit feedback
setupbash/whydoesros2installse_21.txt
# source chained prefixes # setting COLCON_CURRENT_PREFIX avoids determining the prefix in the sourced script COLCON_CURRENT_PREFIX="/opt/ros/noetic" _colcon_prefix_chain_bash_source_script "$COLCON_CURRENT_PREFIX/local_setup.bash" # setting COLCON_CURRENT_PREFIX avoids determining the pre...
setupbash/whydoesros2installse_9.txt
Why Does ROS2 install/setup.bash Source ROS1 and ROS2
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[ ![@christianrauch](https://avatars.githubusercontent.com/u/8573621?s=80&v=4) ](/christianrauch)
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## Build the code in the workspace 
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[ Search syntax tips ](https://docs.github.com/search-github/github-code- search/understanding-github-code-search-syntax)
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The default middleware that ROS 2 uses is ` Fast-RTPS ` , but the middleware (RMW) can be replaced at runtime. See the [ tutorial ](../Tutorials/Working- with-multiple-RMW-implementations.html) on how to work with multiple RMWs.
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setupbash/573_187.txt
For the binary distribution, which is installed as a merged workspace, the effective change of the environment basically comes down to
setupbash/LinuxDevelopmentSetu_24.txt
* Using the ROS 1 bridge
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Copy link
setupbash/573_105.txt
###
setupbash/573_412.txt
[ @richichiare ](https://github.com/richichiare) With the changes proposed in [ colcon/colcon-core#403 ](https://github.com/colcon/colcon-core/pull/403) and [ ament/ament_package#120 ](https://github.com/ament/ament_package/pull/120) you should be able to source a workspace once (with ` COLCON_TRACE=1 ` or ` AMENT_TRAC...
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alias bash-isolate='env -i HOME=$HOME DISPLAY=$DISPLAY SHELL=$SHELL TERM=$TERM USER=$USER PATH=/usr/local/bin:/usr/bin:/bin bash --norc' # Inject this with instrumentation for profiling bash-isolate -c 'time source /opt/ros/eloquent/setup.bash'
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And then add the repository to your sources list:
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###
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[ __ ](/questions/) |
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The first time all env vars prefixed with ROS, or containing "/ros2_$ROS_DISTRO/" in their values are written to a unique cache file (in the user's home directory, if the directory containing local_setup.bash is not writable). Also, the list of packages (of which the configuration was sourced) is written to a file.
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Member
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setupbash/LinuxDevelopmentSetu_52.txt
mkdir -p ~/ros2_eloquent/src cd ~/ros2_eloquent wget https://raw.githubusercontent.com/ros2/ros2/eloquent/ros2.repos vcs import src < ros2.repos
setupbash/573_27.txt
We read every piece of feedback, and take your input very seriously.
setupbash/573_129.txt
[ ![@dirk- thomas](https://avatars.githubusercontent.com/u/1335366?s=80&u=ec35ea6bae7c6e04a5df7482044bbc7681968435&v=4) ](/dirk-thomas)
setupbash/573_349.txt
[ ![@EricCousineau- TRI](https://avatars.githubusercontent.com/u/26719449?s=80&u=85559e6a1fdfc12d6200ad76cc5c26d7928cdc03&v=4) ](/EricCousineau-TRI)
setupbash/InstallingandConfigu_5.txt
# Page
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**[ hdino ](/hdino) ** commented Aug 20, 2019
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[ Multiple Micro-Ros MCUs over the same serial ](/question/385747/multiple- micro-ros-mcus-over-the-same-serial/)
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While your workspace has only these two items sourcing ` install/setup.bash ` implicitly also sources ` /opt/ros/dashing/local_setup.bash ` . The actual time for this small workspace is < 0.2s as you measured.
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[ ![@fujitatomoya](https://avatars.githubusercontent.com/u/43395114?s=80&u=20a48e7d8972be2e39519c3e48215f897767b85f&v=4) ](/fujitatomoya)
setupbash/whydoesros2installse_24.txt
[ edit ](/questions/389464/edit/) [ retag ](/s/questions/389464/retag/) flag offensive [ close ](/questions/389464/close/) merge delete
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Sourcing a default ROS1 workspace via ` time source /opt/ros/melodic/setup.bash ` is done without noticeable delay (0.1 seconds). It, therefore, can be added to the user's ` .bashrc ` to have a source environment with every new terminal.
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Follow
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[ ](https://github.com/)
setupbash/LinuxDevelopmentSetu_91.txt
## Uninstall 
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* Debian Linux - Stretch (9)
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setupbash/InstallingandConfigu_70.txt
* * *
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setupbash/573_38.txt
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setupbash/573_44.txt
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setupbash/573_135.txt
What you are suggesting isn't going to work. While the invocation is faster it simply doesn't set the environment variable it is supposed to. You can't source scripts in the background since the current shell needs to wait for the script in order to update the environment variables. --- All reactions
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By Solution
setupbash/InstallingandConfigu_42.txt
Additionally, if you look in your current directory you should now have a 'build' and 'devel' folder. Inside the 'devel' folder you can see that there are now several setup.*sh files. Sourcing any of these files will overlay this workspace on top of your environment. To understand more about this see the general catkin...
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**[ Seanmatthews ](/Seanmatthews) ** commented Jun 3, 2019
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> as long as the setup scripts take several seconds even for small workspaces > (two packages, each includes only one library/executable) on relatively fast > systems (recent Core i5, Samsung 850 Pro SSD),
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Well, it's about the total time a terminal needs to start if I put these things in, e.g., ` .bashrc ` . Start up times of 1.4 s (or ~3 s on the slower machine) just for sourcing ` /opt/ros/dashing/setup.bash ` can be quite annoying. --- 👍 2 felixendres and thraen reacted with thumbs up emoji
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**[ dirk-thomas ](/dirk-thomas) ** commented Jan 8, 2019
setupbash/LinuxDevelopmentSetu_63.txt
colcon build --symlink-install --merge-install
setupbash/InstallingandConfigu_25.txt
**Note:** Throughout the tutorials you will see references to [ rosbuild ](/rosbuild) and [ catkin ](/catkin) . These are the two available methods for organizing and building your ROS code. rosbuild is not recommended or maintained anymore but kept for legacy. catkin is the recommended way to organise your code, it us...
setupbash/environmenthtmlworks_11.txt
Tracing ¶ When sourcing / calling a workspace-level setup file the number of evaluated scripts and / or interpreted ` .dsv ` files can be significant. To debug what files are being considered in which order and what environment changes are being performed you can prepend the invocation with ` COLCON_TRACE=1 ` . ...
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# ROS 1 Sourcing # source opt/ros/noetic/setup.bash # source ~/ros1_ws/devel/setup.bash # source ~/catkin_ws/devel/setup.bash # ROS 2 Sourcing source /opt/ros/foxy/setup.bash source ~/ros2_ws/install/setup.bash source /usr/share/colcon_argcomplete/hook/colcon-argcomplete.b...
setupbash/573_86.txt
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setupbash/InstallingandConfigu_59.txt
A more complete ROS Workspace tutorial can be found [ here ](/fuerte/Installation/Overlays) .
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setupbash/InstallingandConfigu_17.txt
## Managing Your Environment
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You may also want to ensure that you cut out any excess cruft and isolate the execution, e.g.:
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Sorry, something went wrong.
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[ ![@fujitatomoya](https://avatars.githubusercontent.com/u/43395114?s=40&u=20a48e7d8972be2e39519c3e48215f897767b85f&v=4) ](/fujitatomoya) [ fujitatomoya ](/fujitatomoya) mentioned this issue Jun 2, 2020
setupbash/573_139.txt
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setupbash/573_59.txt
Closed
setupbash/573_36.txt
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setupbash/InstallingandConfigu_62.txt
$ echo $ROS_PACKAGE_PATH
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Sorry, something went wrong.
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### Footer navigation
setupbash/InstallingandConfigu_41.txt
This will configure [ catkin_make ](/catkin/commands/catkin_make) with Python 3. You may then proceed to use just ` catkin_make ` for subsequent builds.
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### Confirmation
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[ ![@dirk- thomas](https://avatars.githubusercontent.com/u/1335366?s=80&u=ec35ea6bae7c6e04a5df7482044bbc7681968435&v=4) ](/dirk-thomas)
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Continue with the [ tutorials and demos ](../Tutorials.html) to configure your environment, create your own workspace and packages, and learn ROS 2 core concepts.
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The cache-enabled local_setup.bash is attached as [ new_local_setup.bash.txt ](https://github.com/ros2/ros2/files/3486293/new_local_setup.bash.txt) and can directly replace /opt/ros2_$ROS_DISTRO/install/local_setup.bash or that of any workspace. Original to patch would be [ https://github.com/colcon/colcon- bash/blob...
setupbash/573_317.txt
All changes have landed for Eloquent. --- 🎉 2 paulbovbel and luator reacted with hooray emoji
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###
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* Set locale
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**[ hdino ](/hdino) ** commented Aug 20, 2019
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These instructions are for ROS Groovy and later. For ROS Fuerte and earlier, select rosbuild.
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#### ROS 2 Documentation
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[ what is the use of --symlink-install in ROS2 colcon build? ](/question/371822/what-is-the-use-of-symlink-install-in-ros2-colcon-build/)
setupbash/InstallingandConfigu_61.txt
To confirm that your package path has been set, echo the ROS_PACKAGE_PATH variable.
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[ how to debug a ros2 python launch file ](/question/412294/how-to-debug-a- ros2-python-launch-file/)
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I noticed the same behavior. I thought it was just my personal computer but apparently it is prevalent on all of my other systems as well. --- All reactions
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Sorry, something went wrong.
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#### Actual behavior
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$ catkin_make -DPYTHON_EXECUTABLE=/usr/bin/python3
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[ ![@hdino](https://avatars.githubusercontent.com/u/7059909?s=80&u=3298ba8a6b0e9797edc44c49055ba37e7fcc123b&v=4) ](/hdino)
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The machine I mentioned above takes about twice as long. --- All reactions
setupbash/573_327.txt
> > adding an ampersand at the end of this line ... > > What you are suggesting isn't going to work. While the invocation is faster > it simply doesn't set the environment variable it is supposed to. You can't > source scripts in the background since the current shell needs to wait for > the script in order to update t...
setupbash/573_264.txt
**[ Karsten1987 ](/Karsten1987) ** commented Aug 20, 2019 •
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Could this solved by replacing /opt/ros_$ROS_DISTRO/install/setup.bash with a file that effectively stores the changes to the environment settings like [ @christianrauch ](https://github.com/christianrauch) posted above? A script to update setup.bash would be required and run e.g. from the postprocessing script in ros2...
setupbash/573_82.txt
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setupbash/environmenthtmlworks_1.txt
* Package-level * Workspace-level * Different shells * Primary shells * Non-primary / additional shells * Avoid duplicate entries * .dsv files * Implementation * Tracing * [ Program flow ](program-flow.html) * [ Extension points ](extension-point.html) * [ Co...
setupbash/InstallingandConfigu_22.txt
Environment setup files are generated for you, but can come from different places:
setupbash/LinuxDevelopmentSetu_53.txt
## Install dependencies using rosdep 
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[*] Realized this phrase means nothing. I write it, nonetheless! --- 👍 3 yeshasvitirupachuri, paulbovbel, and thraen reacted with thumbs up emoji