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Setting project name "debug_msgs" occurs error while "mydebug_msgs" is ok

asked 2018-08-08 00:20:20 -0500

lxbeyond gravatar image

updated 2018-08-08 00:45:46 -0500

jayess gravatar image

when I build my msg project whose name is "debug_msgs" with ros2 bouncy, I get error as follow:

command:

   colcon build

output:

Starting >>> debug_msgs
--- stderr: debug_msgs                         
CMake Error at /root/ros2_ws/install/ament_cmake_export_libraries/share/ament_cmake_export_libraries/cmake/ament_export_libraries.cmake:56 (message):
  ament_export_libraries() package 'debug_msgs' passes the build
  configuration keyword 'debug_msgs__rosidl_generator_c' as the last exported
  library
Call Stack (most recent call first):
  /root/ros2_ws/install/rosidl_generator_c/share/rosidl_generator_c/cmake/rosidl_generator_c_generate_interfaces.cmake:171 (ament_export_libraries)
  /root/ros2_ws/install/ament_cmake_core/share/ament_cmake_core/cmake/core/ament_execute_extensions.cmake:38 (include)
  /root/ros2_ws/install/rosidl_cmake/share/rosidl_cmake/cmake/rosidl_generate_interfaces.cmake:169 (ament_execute_extensions)
  CMakeLists.txt:23 (rosidl_generate_interfaces)


---
Failed   <<< debug_msgs [ Exited with code 1 ]

Summary: 0 packages finished [1.21s]

but after I changed the project name to "mydebug_msgs", It goes well, could any one tell me why ? the test demo is : https://github.com/lxbeyond/bouncy_msg

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answered 2018-08-08 11:25:47 -0500

Dirk Thomas gravatar image

CMake uses a few keyword to identify libraries with special semantic: debug, optimized, and generic.

The code was supposed to only detect those but it turns out the regex was incorrect and matches the library in your case (starting with debug).

Please see the following PR which fixes the regex and allows you to build your package as expected: https://github.com/ament/ament_cmake/...

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answered 2018-08-08 01:50:06 -0500

tfoote gravatar image

I haven't had a chance to look into it. But I'd suspect that your choice of debug as a name is likely colliding with a keyword at one of the layers.

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Asked: 2018-08-08 00:20:20 -0500

Seen: 45 times

Last updated: Aug 08 '18