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Hello everyone ; When I write catkin_make it gives such a warning.
/usr/bin/ld: warning: libopencv_core.so.4.2, needed by /usr/local/lib/libopencv_highgui.so.4.2.0, may conflict with libopencv_core.so.3.2.
I installed opencv with sudo apt and then I installed it from source. How can i fix the warning ?
Thanks.
In the CMAKE lists txt file you can specify the version your package should use.
In find_package() command specify the version you need:
find_package(OpenCV 4.2.0 REQUIRED)
Normally this was the case;
set(OpenCV_DIR /usr/local/lib/cmake/opencv4)
find_package(catkin REQUIRED COMPONENTS
rospy
roscpp
OpenCV
message_filters
)
When I type OpenCV 4.2.0 , I get an error.(catkin_make error)
Like this ?
set(OpenCV_DIR /usr/local/lib/cmake/opencv4)
find_package(catkin REQUIRED COMPONENTS
cv_bridge
message_filters
roscpp
rospy
sensor_msgs
std_msgs
)
find_package(OpenCV 4.2.0 REQUIRED)
How Ros finds OpenCV 3.2. I didn't even write it in the CMakeList.
@jahim44229 I'm facing now the same warning. I'm using opencv 4.5.1 but I found out that cv_bridge recommended version for ros melodic is the 3.2. Check here. Maybe that is why ROS finds 3.2 directly. I'm trying to make my node work fully with 3.2
A simple solution is to download a suitable version of vision_opencv from https://github.com/ros-perception/vis.... Then extract the contents (containing some packages cv_bridge image_geometry opencv_tests vision_opencv) to a folder called vision_opencv of your src folder in your catkin workspace.
Now catkin_make or catkin build your workspace and the necessary ros opencv packages will compile and link against the local vision_opencv folder. You might need to clean your workspace before that.
I tried this way, but it's not solved :/ catkin show me this error :
Asked: 2020-02-20 03:10:20 -0500
Seen: 2,746 times
Last updated: Feb 20 '20
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