Build Issue

[swri-robotics]

Build Issue

[pjreed]

Which Ubuntu/ROS distributions and branch of marti_common are you using? Check to make sure your git branches match your ROS distro.

ROS Hydro provided opencv2 as a ROS dependency, but as of Indigo it was removed and now it's preferred to depend on the system dependency libopencv-dev. So, if you're using Hydro, try:

sudo apt-get install ros-hydro-opencv2

But if you're on Indigo, try:

sudo apt-get install libopencv-dev

[droter]

I am using Ubuntu Description: Ubuntu 14.04.3 LTS Release: 14.04
with ROS indigo. I ran the sudo apt-get install libopencv-dev and it said that it is already installed. The branch I am using is ref: refs/heads/indigo-devel

[pjreed]

It looks like the symbols the compiler is looking for should be defined in /usr/include/opencv2/ml/ml.hpp . Check to see if you have that file, and if you don't, try:

libopencv-ml-dev

[droter]

I have the file in /usr/include/opencv2/ml/ml.hpp and libopencv-ml-dev is installed. Do I need to set the rosversion opencv2 so it can find the directory?

[pjreed]

I don't think so, I've been able to compile it on multiple different computers without doing that. I suspect that there might be an issue somewhere with a missing transitive dependency due to something I have in my workspace that isn't in yours.

Just to verify -- do you have the mapviz, marti_common, and marti_messages repositories all in your workspace? Are all of them on the indigo-devel branch?

[shaun-edwards]

@pjreed, @droter, It appears mapviz is building correctly on the ROS servers here. If there were a dependency issue, it is almost always caught there.

I've found that the package manager can mess things up sometimes. One thing to try is to remove/install something that you know uses the openCV dependency. You could try cv_bridge or if you want the nuclear option, remove/install ros-indigo*. This seems extreme, but it doesn't take too long and it has fixed similar problems in the past for me.

[droter]

Thanks for your help.

There must be a conflict on my computer. I installed the package on a clean install and it work perfect.