error when sudo ./build_ros.sh(ros-noetic)

[DaDDong]

I have successfully compiled build.sh, but when I started to execute build_ros.sh, an error is reported: CMake Warning (dev) in CMakeLists.txt: No project() command is present. The top-level CMakeLists.txt file must contain a literal, direct call to the project() command. Add a line of code such as

project(ProjectName)

near the top of the file, but after cmake_minimum_required().

CMake is pretending there is a "project(Project)" command on the first line. This warning is for project developers. Use -Wno-dev to suppress it.

CMake Deprecation Warning at /opt/ros/noetic/share/ros/core/rosbuild/rosbuild.cmake:7 (cmake_policy): The OLD behavior for policy CMP0011 will be removed from a future version of CMake.

The cmake-policies(7) manual explains that the OLD behaviors of all policies are deprecated and that a policy should be set to OLD only under specific short-term circumstances. Projects should be ported to the NEW behavior and not rely on setting a policy to OLD. Call Stack (most recent call first): CMakeLists.txt:2 (include)

CMake Deprecation Warning at /opt/ros/noetic/share/ros/core/rosbuild/rosbuild.cmake:16 (cmake_policy): The OLD behavior for policy CMP0002 will be removed from a future version of CMake.

The cmake-policies(7) manual explains that the OLD behaviors of all policies are deprecated and that a policy should be set to OLD only under specific short-term circumstances. Projects should be ported to the NEW behavior and not rely on setting a policy to OLD. Call Stack (most recent call first): CMakeLists.txt:2 (include)

CMake Deprecation Warning at /opt/ros/noetic/share/ros/core/rosbuild/rosbuild.cmake:18 (cmake_policy): The OLD behavior for policy CMP0003 will be removed from a future version of CMake.

The cmake-policies(7) manual explains that the OLD behaviors of all policies are deprecated and that a policy should be set to OLD only under specific short-term circumstances. Projects should be ported to the NEW behavior and not rely on setting a policy to OLD. Call Stack (most recent call first): CMakeLists.txt:2 (include)

CMake Deprecation Warning at /opt/ros/noetic/share/ros/core/rosbuild/rosbuild.cmake:20 (cmake_policy): The OLD behavior for policy CMP0005 will be removed from a future version of CMake.

The cmake-policies(7) manual explains that the OLD behaviors of all policies are deprecated and that a policy should be set to OLD only under specific short-term circumstances. Projects should be ported to the NEW behavior and not rely on setting a policy to OLD. Call Stack (most recent call first): CMakeLists.txt:2 (include)

CMake Deprecation Warning at /opt/ros/noetic/share/ros/core/rosbuild/rosbuild.cmake:23 (cmake_policy): The OLD behavior for policy CMP0011 will be removed from a future version of CMake.

The cmake-policies(7) manual explains that the OLD behaviors of all policies are deprecated and that a policy should be set to OLD only under specific short-term circumstances. Projects should be ported to the NEW behavior and not rely on setting a policy to OLD. Call Stack (most recent call first): CMakeLists.txt:2 (include)

[rosbuild] Building package ORB_SLAM2 [rosbuild] Error from syntax check of ORB_SLAM2/manifest.xml Traceback (most recent call last): File "", line 1, in File "/opt/ros/noetic/lib/python3/dist-packages/roslib/init.py", line 50, in from roslib.launcher import load_manifest # noqa: F401 File "/opt/ros/noetic/lib/python3/dist-packages/roslib/launcher.py", line 42, in import rospkg ImportError: No module named rospkg CMake Error at /opt/ros/noetic/share/ros/core/rosbuild/private.cmake:77 (message): [rosbuild] Syntax check of ORB_SLAM2/manifest.xml failed; aborting Call Stack (most recent call first): /opt/ros/noetic/share/ros/core/rosbuild/public.cmake:174 (_rosbuild_check_manifest) CMakeLists.txt:4 (rosbuild_init)

-- Configuring incomplete, errors occurred! See also "/home/yxd/ORB_SLAM2/Examples/ROS/ORB_SLAM2/build/CMakeFiles/CMakeOutput.log". make: *** 没有指明目标并且找不到 makefile。 停止。

[Miha22]

project(package_name)

[yaoxingzhi]

i have the same error .have you slove the problem?