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Why do I receive: Error using ros.intern​al.ROSProj​ectBuilder​/buildPack​age (line 534) Error building package: build log.

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Identifying message files in folder 'D:/Documents/MATLAB/Examples/R2021a/ros/ROS2CustomMessagesExample/custom'.Done.
Validating message files in folder 'D:/Documents/MATLAB/Examples/R2021a/ros/ROS2CustomMessagesExample/custom'.Done.
[3/3] Generating MATLAB interfaces for custom message packages... Done.
Running colcon build in folder 'D:/Documents/MATLAB/Examples/R2021a/ros/ROS2CustomMessagesExample/custom/matlab_msg_gen/win64'.
Build in progress. This may take several minutes...
Error building package: build log.
Error in ros2genmsg (line 241)
buildPackage(builder, [], ' --merge-install', colconMakeArgs); %other messages might need to be present in the same directory
  5 Commenti
manuel mar
manuel mar il 19 Lug 2021
Where exactly in the events or all logger text files should I look up. I cannot attach these text files, but, it seems that error are shown in those txt files.
Cam Salzberger
Cam Salzberger il 19 Lug 2021
You can see an example of where the log files are in the comments for this question (for anyone else who sees this). The stderr log should show just the issues, while the stdout_stderr log shows everything in context.

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Cam Salzberger
Cam Salzberger il 21 Lug 2021
The key part of the error message in the log file is right here:
Path: <...> exceeds the OS max path limit. The fully qualified file name must be less than 260 characters.
The issue is that colcon creates a rather large folder and file heirarchy when doing any kind of package build. If the path to the initial folder is any kind of reasonable length, it may run ito the Windows limitation of 260 characters. Linux and Mac don't have that issue.
I'd suggest either creating a new folder with a shorter path (like D:/ros2) and copying the example files into there for testing, or mapping a network drive to the examples folder and changing directory so that you use that mapped network drive.
-Cam

Più risposte (1)

manuel mar
manuel mar il 21 Lug 2021
Hi. I check that thread. I have this error coming out from the stdout.log, I am not sure what does it mean. I already reinstalled matlab and python.
" error MSB3491: Could not write lines to file example_b_msgs__rosidl_typesupport_fastrtps_cpp.dir\Release\example_.51"
Checking Build System
Building Custom Rule D:/Documents/MATLAB/Examples/R2021a/ros/ROS2CustomMessagesExample/custom/matlabmsg_gen/win64/src/example_b_msgs/CMakeLists.txt
Building Custom Rule D:/Documents/MATLAB/Examples/R2021a/ros/ROS2CustomMessagesExample/custom/matlab_msg_gen/win64/src/example_b_msgs/CMakeLists.txt
example_b_msgs__rosidl_generator_c.vcxproj -> D:\Documents\MATLAB\Examples\R2021a\ros\ROS2CustomMessagesExample\custom\matlab_msg_gen\win64\build\example_b_msgs\Release\example_b_msgs__rosidl_generator_c.dll
Building Custom Rule D:/Documents/MATLAB/Examples/R2021a/ros/ROS2CustomMessagesExample/custom/matlab_msg_gen/win64/src/example_b_msgs/CMakeLists.txt
example_b_msgs__rosidl_typesupport_c.vcxproj -> D:\Documents\MATLAB\Examples\R2021a\ros\ROS2CustomMessagesExample\custom\matlab_msg_gen\win64\build\example_b_msgs\Release\example_b_msgs__rosidl_typesupport_c.dll
Building Custom Rule D:/Documents/MATLAB/Examples/R2021a/ros/ROS2CustomMessagesExample/custom/matlab_msg_gen/win64/src/example_b_msgs/CMakeLists.txt
example_b_msgs__rosidl_typesupport_cpp.vcxproj -> D:\Documents\MATLAB\Examples\R2021a\ros\ROS2CustomMessagesExample\custom\matlab_msg_gen\win64\build\example_b_msgs\Release\example_b_msgs__rosidl_typesupport_cpp.dll
C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.CppBuild.targets(382,5): error MSB3491: Could not write lines to file "example_b_msgs__rosidl_typesupport_fastrtps_cpp.dir\Release\example_.51EA7ED9.tlog\example_b_msgs__rosidl_typesupport_fastrtps_cpp.lastbuildstate". Path: example_b_msgs__rosidl_typesupport_fastrtps_cpp.dir\Release\example_.51EA7ED9.tlog\example_b_msgs__rosidl_typesupport_fastrtps_cpp.lastbuildstate exceeds the OS max path limit. The fully qualified file name must be less than 260 characters. [D:\Documents\MATLAB\Examples\R2021a\ros\ROS2CustomMessagesExample\custom\matlab_msg_gen\win64\build\example_b_msgs\example_b_msgs__rosidl_typesupport_fastrtps_cpp.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.CppBuild.targets(382,5): error MSB3491: Could not write lines to file "example_b_msgs__rosidl_typesupport_introspection_c.dir\Release\example_.32F85CB5.tlog\example_b_msgs__rosidl_typesupport_introspection_c.lastbuildstate". Path: example_b_msgs__rosidl_typesupport_introspection_c.dir\Release\example_.32F85CB5.tlog\example_b_msgs__rosidl_typesupport_introspection_c.lastbuildstate exceeds the OS max path limit. The fully qualified file name must be less than 260 characters. [D:\Documents\MATLAB\Examples\R2021a\ros\ROS2CustomMessagesExample\custom\matlab_msg_gen\win64\build\example_b_msgs\example_b_msgs__rosidl_typesupport_introspection_c.vcxproj]
C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.CppBuild.targets(382,5): error MSB3491: Could not write lines to file "example_b_msgs__rosidl_typesupport_introspection_cpp.dir\Release\example_.F3DFBDA4.tlog\example_b_msgs__rosidl_typesupport_introspection_cpp.lastbuildstate". Path: example_b_msgs__rosidl_typesupport_introspection_cpp.dir\Release\example_.F3DFBDA4.tlog\example_b_msgs__rosidl_typesupport_introspection_cpp.lastbuildstate exceeds the OS max path limit. The fully qualified file name must be less than 260 characters. [D:\Documents\MATLAB\Examples\R2021a\ros\ROS2CustomMessagesExample\custom\matlab_msg_gen\win64\build\example_b_msgs\example_b_msgs__rosidl_typesupport_introspection_cpp.vcxproj]

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