Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

How to redirect warnings to the screen?

compile_error

asked 2012-01-11 22:43:25 -0500

Felix Tr
378 ●13 ●17 ●21

Hello all,

I am writing code C code that uses ROS and my OS is Linux. I also use launch file in order to run my program.

My problem: I don´t see the warnings on the screen after compilation. The only thing I am able to see is this message:

[rosmake-3] Finished <<< guiPackage [PASS] [ 4.21 seconds ] -- WARNING: 2 compiler warnings

My Questions:

Is this problem connected to the launch file or not?
Whatever the answer for 1 is, how can I see the warnings on the shell screen of Linux in this case?

Thank you all for your time, Felix.

edit retag flag offensive close merge delete

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2012-01-11 23:01:40 -0500

Martin Günther

11816 ●82 ●159 ●198 https://www.dfki.de/en...

Hi Felix,

this cannot be connected to any launch file, since the launch file is not used during compile time.

There are two ways of seeing the warnings:

There is a message at the beginning of the rosmake output, which looks something like this:

[ rosmake ] Logging to directory/home/martin/.ros/rosmake/rosmake_output-20120112-135426

All logs (including the warnings) are in files below that directory.
You can run make instead of rosmake to see the warnings. Note however that make doesn't build the dependencies. Also you'll probably need to run make clean beforehand to see anything interesting going on.