'Policy CMP0148 is not set' warning

[bijoua29]

Bug report

Required Info:

• Operating System:
  • Ubuntu 24.04
• Installation type:
  • binaries
• Version or commit hash:
  • rolling sync on 2024-03-13 (version to upgrade to Ubuntu 24.04)
• DDS implementation:
  • Connext RMW
• Client library (if applicable):
  • rclcpp

Steps to reproduce issue

Compile packages for ros2 messages

Expected behavior

No compiler warnings

Actual behavior

See following compiler warnings

CMake Warning (dev) at /opt/ros/rolling/share/rosidl_generator_py/cmake/rosidl_generator_py_generate_interfaces.cmake:20 (find_package):
Policy CMP0148 is not set: The FindPythonInterp and FindPythonLibs modules
are removed. Run "cmake --help-policy CMP0148" for policy details. Use
the cmake_policy command to set the policy and suppress this warning.

Call Stack (most recent call first):
/opt/ros/rolling/share/ament_cmake_core/cmake/core/ament_execute_extensions.cmake:48 (include)
/opt/ros/rolling/share/rosidl_cmake/cmake/rosidl_generate_interfaces.cmake:280 (ament_execute_extensions)
CMakeLists.txt:71 (rosidl_generate_interfaces)
This warning is for project developers. Use -Wno-dev to suppress it.

CMake Warning (dev) at /opt/ros/rolling/share/python_cmake_module/cmake/Modules/FindPythonExtra.cmake:52 (find_package):
Policy CMP0148 is not set: The FindPythonInterp and FindPythonLibs modules
are removed. Run "cmake --help-policy CMP0148" for policy details. Use
the cmake_policy command to set the policy and suppress this warning.

Call Stack (most recent call first):
/opt/ros/rolling/share/rosidl_generator_py/cmake/rosidl_generator_py_generate_interfaces.cmake:23 (find_package)
/opt/ros/rolling/share/ament_cmake_core/cmake/core/ament_execute_extensions.cmake:48 (include)
/opt/ros/rolling/share/rosidl_cmake/cmake/rosidl_generate_interfaces.cmake:280 (ament_execute_extensions)
CMakeLists.txt:71 (rosidl_generate_interfaces)
This warning is for project developers. Use -Wno-dev to suppress it.

CMake Warning (dev) at /opt/ros/rolling/share/python_cmake_module/cmake/Modules/FindPythonExtra.cmake:140 (find_package):
Policy CMP0148 is not set: The FindPythonInterp and FindPythonLibs modules
are removed. Run "cmake --help-policy CMP0148" for policy details. Use
the cmake_policy command to set the policy and suppress this warning.

Call Stack (most recent call first):
/opt/ros/rolling/share/rosidl_generator_py/cmake/rosidl_generator_py_generate_interfaces.cmake:23 (find_package)
/opt/ros/rolling/share/ament_cmake_core/cmake/core/ament_execute_extensions.cmake:48 (include)
/opt/ros/rolling/share/rosidl_cmake/cmake/rosidl_generate_interfaces.cmake:280 (ament_execute_extensions)
CMakeLists.txt:71 (rosidl_generate_interfaces)
This warning is for project developers. Use -Wno-dev to suppress it.

Additional information

[clalancette]

I think we just need to do new releases into Rolling to solve this. All of the code in the core should have already been updated to avoid this.

[bijoua29]

@clalancette Thanks. I assume then it will get resolved in the next rolling sync. I will keep an eye on it and close this issue if resolved.