How can I fix the cudnn_cmake_module error when building Autoware with colcon?

Question

--- stderr: trtexec_vendor CMake Error at CMakeLists.txt:15 (find_package): By not providing "Findcudnn_cmake_module.cmake" in CMAKE_MODULE_PATH this project has asked CMake to find a package configuration file provided by "cudnn_cmake_module", but CMake did not find one.

Could not find a package configuration file provided by "cudnn_cmake_module" with any of the following names:

cudnn_cmake_moduleConfig.cmake
cudnn_cmake_module-config.cmake

Add the installation prefix of "cudnn_cmake_module" to CMAKE_PREFIX_PATH or set "cudnn_cmake_module_DIR" to a directory containing one of the above files. If "cudnn_cmake_module" provides a separate development package or SDK, be sure it has been installed.

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I already installed cudnn and used it whole the times. How can i fix this error?

I was trying to install 'autoware_galactic' and

when i tried 'colcon build' that error was occurred

Answer 1

I am trying to migrate from ROS to ROS2 and still not used to those errors. This error confused me for a couple days but the solution is kind of easy. It turns out that this is similar to package missing errors in ROS.

You are using galactic, right? If so, there is a package name ros-galactic-cudnn-cmake-module you can install directly thru apt.

sudo apt install ros-galactic-cudnn-cmake-module

You can replace the galactic to your ros2-distro such as humble in the future.

Hope this help. This is my first answer on Stackoverflow :)