Feature to show deprecation warning for msg/srv

[wkentaro]

Depends on ros/genmsg#76

Why?

See ros/genmsg#76

Example

Warnings   << pcl_msgs:make /home/wkentaro/Documents/catkin_wss/genmsg/logs/pcl_msgs/build.make.003.log
In file included from /home/wkentaro/Documents/catkin_wss/genmsg/src/pcl_msgs/src/example.cpp:2:0:
/home/wkentaro/Documents/catkin_wss/genmsg/devel/include/pcl_msgs/Vertices.h:19:2: warning: #warning "ROS message pcl_msgs/Vertices.msg is deprecated. Please stop using it." [-Wcpp]
 #warning "ROS message pcl_msgs/Vertices.msg is deprecated. Please stop using it."
  ^
In file included from /home/wkentaro/Documents/catkin_wss/genmsg/devel/include/pcl_msgs/UpdateFilename.h:11:0,
                 from /home/wkentaro/Documents/catkin_wss/genmsg/src/pcl_msgs/src/example.cpp:3:
/home/wkentaro/Documents/catkin_wss/genmsg/devel/include/pcl_msgs/UpdateFilenameRequest.h:19:2: warning: #warning "ROS message pcl_msgs/UpdateFilenameRequest.msg is deprecated. Please stop using it." [-Wcpp]
 #warning "ROS message pcl_msgs/UpdateFilenameRequest.msg is deprecated. Please stop using it."
  ^
In file included from /home/wkentaro/Documents/catkin_wss/genmsg/devel/include/pcl_msgs/UpdateFilename.h:12:0,
                 from /home/wkentaro/Documents/catkin_wss/genmsg/src/pcl_msgs/src/example.cpp:3:
/home/wkentaro/Documents/catkin_wss/genmsg/devel/include/pcl_msgs/UpdateFilenameResponse.h:19:2: warning: #warning "ROS message pcl_msgs/UpdateFilenameResponse.msg is deprecated. Please stop using it." [-Wcpp]
 #warning "ROS message pcl_msgs/UpdateFilenameResponse.msg is deprecated. Please stop using it."
  ^
In file included from /home/wkentaro/Documents/catkin_wss/genmsg/src/pcl_msgs/src/example.cpp:3:0:
/home/wkentaro/Documents/catkin_wss/genmsg/devel/include/pcl_msgs/UpdateFilename.h:14:2: warning: #warning "ROS service pcl_msgs/UpdateFilename.srv is deprecated. Please stop using it." [-Wcpp]
 #warning "ROS service pcl_msgs/UpdateFilename.srv is deprecated. Please stop using it."
  ^
cd /home/wkentaro/Documents/catkin_wss/genmsg/build/pcl_msgs; catkin build --get-env pcl_msgs | catkin env -si  /usr/bin/make --jobserver-fds=6,7 -j; cd -
...............................................................................................................................................................................................
Finished  <<< pcl_msgs                          [ 3.1 seconds ]
[build] Summary: All 8 packages succeeded!
[build]   Ignored:   8 packages were skipped or are blacklisted.
[build]   Warnings:  1 packages succeeded with warnings.
[build]   Abandoned: None.
[build]   Failed:    None.

[dirk-thomas]

The warning doesn't provide any helpful context to users what they should do instead.

Also there is no way to suppress the warning.

[wkentaro]

Do you agree with adding a deprecation message interface to genmsg?

Also there is no way to suppress the warning.

If it is necessary, I suggest below:

#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcpp"
#include <a_pkg/DEPRECATED_HEADER.h>
#pragma GCC diagnostic pop