vm虚拟机+ubuntu20+ros2，添加接口后报错，cmake过不去

新手而已

请问解决了吗？我也遇到了这个问题

练剑的书生

@一只活跃的新手没有

新手而已

@练剑的书生请问你也是之前一直用Python的吗

练剑的书生

@一只活跃的新手刚开始学习

新手而已

@练剑的书生我也是，我在前面章节都是用的Python实现，用的rclpy
到这就出问题了

小鱼

@练剑的书生提供下Novel.msg内容和你的目录结构，另外试试直接colcon build所有的试试。

练剑的书生

@小鱼

小鱼

@练剑的书生可以用复制粘贴的方式把报错贴一下吗，我好去检索下

练剑的书生

@小鱼

gsl@gsl-virtual-machine:~/桌面/colcon_test/town_ws$ colcon build
Starting >>> village_interfaces
Starting >>> village_li
--- stderr: village_interfaces                                                         
CMake Error at /opt/ros/foxy/share/rosidl_cmake/cmake/rosidl_generate_interfaces.cmake:240 (list):
  list index: 1 out of range (-1, 0)
Call Stack (most recent call first):
  CMakeLists.txt:37 (rosidl_generate_interfaces)


CMake Error at /opt/ros/foxy/share/rosidl_generator_c/cmake/rosidl_generator_c_generate_interfaces.cmake:65 (message):
  Target dependency
  '/colcon_test/town_ws/build/village_interfaces/rosidl_adapter/village_interfaces/msg/Novel.idl'
  does not exist
Call Stack (most recent call first):
  /opt/ros/foxy/share/ament_cmake_core/cmake/core/ament_execute_extensions.cmake:48 (include)
  /opt/ros/foxy/share/rosidl_cmake/cmake/rosidl_generate_interfaces.cmake:286 (ament_execute_extensions)
  CMakeLists.txt:37 (rosidl_generate_interfaces)


make: *** [Makefile:222：cmake_check_build_system] 错误 1
---
Failed   <<< village_interfaces [1.01s, exited with code 2]
Aborted  <<< village_li [1.20s]                     

Summary: 0 packages finished [1.42s]
  1 package failed: village_interfaces
  1 package aborted: village_li
  1 package had stderr output: village_interfaces
  1 package not processed

小鱼

@练剑的书生我找了下源码测试下，发现没有问题，同foxy版本。

root@097c0c2d6b66:/home/mouse/code/github/ros2_town# colcon build
Starting >>> village_interfaces
Finished <<< village_interfaces [6.30s]                     
Starting >>> village_li
Starting >>> village_wang
Starting >>> village_zhang
Finished <<< village_li [0.89s]                                                                               
Finished <<< village_zhang [4.31s]                                                                  
Finished <<< village_wang [7.31s]                      

Summary: 4 packages finished [13.7s]
root@097c0c2d6b66:/home/mouse/code/github/ros2_town# echo $ROS_DISTRO
foxy

源码地址：https://github.com/fishros/ros2_town

请你下载源码后直接编译看看，排除是代码问题

练剑的书生

@小鱼下载下来编译还是这个样子，像是cmake环境有问题了

小鱼

@练剑的书生你装的是桌面版的ROS2吗，我也怀疑编译工具问题，你在village_interfaces文件夹下试一下下面的语句

source /opt/ros/foxy/setup.bash
mkdir build
cd build
cmake ..
make

练剑的书生

@小鱼是桌面版
-- The C compiler identification is GNU 9.4.0
-- The CXX compiler identification is GNU 9.4.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found ament_cmake: 0.9.9 (/opt/ros/foxy/share/ament_cmake/cmake)
-- Found PythonInterp: /usr/bin/python3 (found suitable version "3.8.10", minimum required is "3")
-- Using PYTHON_EXECUTABLE: /usr/bin/python3
-- Found sensor_msgs: 2.0.5 (/opt/ros/foxy/share/sensor_msgs/cmake)
-- Using all available rosidl_typesupport_c: rosidl_typesupport_fastrtps_c;rosidl_typesupport_introspection_c
-- Found rosidl_adapter: 1.2.1 (/opt/ros/foxy/share/rosidl_adapter/cmake)
-- Found OpenSSL: /usr/lib/x86_64-linux-gnu/libcrypto.so (found version "1.1.1f")
-- Found FastRTPS: /opt/ros/foxy/include
-- Using all available rosidl_typesupport_cpp: rosidl_typesupport_fastrtps_cpp;rosidl_typesupport_introspection_cpp
-- Found rosidl_default_generators: 1.0.1 (/opt/ros/foxy/share/rosidl_default_generators/cmake)
-- Found PythonInterp: /usr/bin/python3 (found version "3.8.10")
CMake Error at /opt/ros/foxy/share/rosidl_cmake/cmake/rosidl_generate_interfaces.cmake:240 (list):
list index: 1 out of range (-1, 0)
Call Stack (most recent call first):
CMakeLists.txt:26 (rosidl_generate_interfaces)

CMake Error at /opt/ros/foxy/share/rosidl_cmake/cmake/rosidl_generate_interfaces.cmake:240 (list):
list index: 1 out of range (-1, 0)
Call Stack (most recent call first):
CMakeLists.txt:26 (rosidl_generate_interfaces)

CMake Error at /opt/ros/foxy/share/rosidl_generator_c/cmake/rosidl_generator_c_generate_interfaces.cmake:65 (message):
Target dependency
'/src/examples/src/village_interfaces/build/rosidl_adapter/village_interfaces/msg/Novel.idl'
does not exist
Call Stack (most recent call first):
/opt/ros/foxy/share/ament_cmake_core/cmake/core/ament_execute_extensions.cmake:48 (include)
/opt/ros/foxy/share/rosidl_cmake/cmake/rosidl_generate_interfaces.cmake:286 (ament_execute_extensions)
CMakeLists.txt:26 (rosidl_generate_interfaces)

-- Configuring incomplete, errors occurred!
See also "/home/gsl/桌面/src/examples/src/village_interfaces/build/CMakeFiles/CMakeOutput.log".

小鱼

@练剑的书生先去掉sensor_msgs依赖以及Novel.msg中的image字段试试

练剑的书生

@小鱼 Starting >>> village_interfaces
--- stderr: village_interfaces
CMake Error at /opt/ros/foxy/share/rosidl_cmake/cmake/rosidl_generate_interfaces.cmake:162 (message):
rosidl_generate_interfaces() the passed dependency 'sensor_msgs' has not
been found before using find_package()
Call Stack (most recent call first):
CMakeLists.txt:26 (rosidl_generate_interfaces)

Failed <<< village_interfaces [0.45s, exited with code 1]

Summary: 0 packages finished [0.65s]
1 package failed: village_interfaces
1 package had stderr output: village_interfaces
3 packages not processed

小鱼

@练剑的书生在 vm虚拟机+ubuntu20+ros2，添加接口后报错，cmake过不去中说：

CMake Error at /opt/ros/foxy/share/rosidl_cmake/cmake/rosidl_generate_interfaces.cmake:162 (message):
rosidl_generate_interfaces() the passed dependency 'sensor_msgs' has not
been found before using find_package()

看到这个错误了，你把CMakeLists.txt中的find_package(sensor_msgs)去掉

练剑的书生

@练剑的书生屏蔽了之后编译是这样的

小鱼

@练剑的书生贴一下你的CMakeLists.txt,应该是没删除干净

练剑的书生

@小鱼 cmake_minimum_required(VERSION 3.5)
project(village_interfaces)

Default to C99

if(NOT CMAKE_C_STANDARD)
set(CMAKE_C_STANDARD 99)
endif()

Default to C++14

if(NOT CMAKE_CXX_STANDARD)
set(CMAKE_CXX_STANDARD 14)
endif()

if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
add_compile_options(-Wall -Wextra -Wpedantic)
endif()

find dependencies

find_package(ament_cmake REQUIRED)
#find_package(sensor_msgs REQUIRED)
find_package(rosidl_default_generators REQUIRED)

uncomment the following section in order to fill in

further dependencies manually.

find_package(<dependency> REQUIRED)

if(BUILD_TESTING)
find_package(ament_lint_auto REQUIRED)

the following line skips the linter which checks for copyrights

uncomment the line when a copyright and license is not present in all source files

#set(ament_cmake_copyright_FOUND TRUE)

the following line skips cpplint (only works in a git repo)

uncomment the line when this package is not in a git repo

#set(ament_cmake_cpplint_FOUND TRUE)
ament_lint_auto_find_test_dependencies()
endif()

rosidl_generate_interfaces(${PROJECT_NAME}
"msg/Novel.msg"
DEPENDENCIES sensor_msgs
)

ament_package()

小鱼

@练剑的书生在 vm虚拟机+ubuntu20+ros2，添加接口后报错，cmake过不去中说：

DEPENDENCIES sensor_msgs

这里的也要删掉，另外记得用代码块包裹下

代码块