I´ve followed this tutorial about creating a custom msg: http://wiki.ros.org/msg, but instead of having strings as the content of my message file (Num.msg) i wanted my message to have this content:
std_msgs/Header header
...
uint8[] data
sensor_msgs/Image
But I´m getting this error when compiling it:
The dependencies of the message/service 'rqt_bag/Num' have changed. Please rerun cmake.
rqt_bag/CMakeFiles/_rqt_bag_generate_messages_check_deps_Num.dir/build.make:57:recipe for target 'rqt_bag/CMakeFiles/_rqt_bag_generate_messages_check_deps_Num'' failed
make[2]: * [rqt_bag/CMakeFiles/_rqt_bag_generate_messages_check_deps_Num] Error 1
CMakeFiles/MakeFiles2:858: recipe for target 'rqt_bag/CMakeFiles/_rqt_bag_generate_messages_check_deps_Num.dir/all' failed
make[1]: [rqt_bag/CMakeFiles/_rqt_bag_generate_messages_check_deps_Num.dir/all] Error 2 Makefile: 138: recipe for target 'all' failed make: ** [all] Error 2
Invoking "make -j1 -l1" failed
As i said before I´ve followed the tutorial, so i have modified the CMakeFile.txt and the package.xml as it is said in the tutorial adding those new fields. However if my message file have just "strings", for example, "string first_name", it all works.
Here is my CMakeFile.txt:
cmake_minimum_required(VERSION 2.8.3)
project(rqt_bag)
find_package(catkin REQUIRED COMPONENTS
roscpp
rospy
std_msgs
message_generation
)
add_message_files(
FILES
Num.msg
)
generate_messages(
DEPENDENCIES
std_msgs
)
catkin_package(
CATKIN_DEPENDS message_runtime
)
include_directories(
${catkin_INCLUDE_DIRS}
)
${catkin_EXPORTED_TARGETS})
install(FILES plugin.xml
DESTINATION ${CATKIN_PACKAGE_SHARE_DESTINATION}
)
install(DIRECTORY launch resource
DESTINATION ${CATKIN_PACKAGE_SHARE_DESTINATION}
)
install(PROGRAMS scripts/rqt_bag
DESTINATION ${CATKIN_PACKAGE_BIN_DESTINATION}
)
Why????? Thank you so much in advanced.
Originally posted by alejandro on ROS Answers with karma: 3 on 2018-04-29
Post score: 0
Original comments
Comment by robotchicken on 2018-04-29:
Can you paste your CMakeFile.txt?
I suspect the dependencty on std_msgs is probably not present.
Comment by robotchicken on 2018-04-29:
Forgot to mention earlier, can you try a catkin_make clean and then a catkin_make?
Comment by alejandro on 2018-04-29:
Thats my CMakeFile.txt. What I actually want to do is to save in a bag file a message like sensor_msgs/Image apart from other parameters. So I´ve copied the content of sensor_msgs/Image into Num.msg to try to imitate the behaviour as I can´t modify the image.msg one.
Comment by alejandro on 2018-04-29:
Sorry but I had forgotten one line in my Num.msg which is the last one: sensor_msgs/Image