add_executable Error - CMake

mfatih

10/7/22, 12:16 PM

I created a package and source file in my Ubuntu 20.04 computer. My goal is to visualize dummy sensors and objects in Rviz2. To do that I followed the How to visualize sensor data in ROS2 article. And, when I went to build the package with the command:

colcon build --symlink-install

I got this error:

The cmake file I used is the following:

I am using ROS2 foxy distro.

1 + 1

compiling

cmake

steeldriver

10/7/22, 1:02 PM

This sounds like an question about `cmake` and/or programming - rather than about Ubuntu. It would probably be more appropriate on [so]

Score:0

Ubuntu

Minneyar

10/7/22, 1:39 PM

When you have an add_executable command in cmake, it expects the files you list to exist relative to the location of your CMakeLists.txt file. So, for example, your workspace might look something like this:

.
└── my_package
    ├── CMakeLists.txt
    ├── include
    │   └── my_package
    ├── package.xml
    └── src
        └── dolly_follow.cpp

It looks like the tutorial you're following just copy & pasted a CMakeLists.txt from the dolly repository, but did not instruct you to actually pull any code from the repository; I would say the problem here is that the tutorial's instructions are unclear.

If you don't intend to actually compile a C++ file named dolly_follow.cpp, you can both remove the add_executable command that refers to it and the later install command that references the add_executable command's target.

0 + 1

mfatih

10/7/22, 2:13 PM

Yes you are right. The instructions are not clear. Thanks for your answer.

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: add_executable Error - CMake

TH: ข้อผิดพลาด add_executable - CMake

RO: add_executable Eroare - CMake

RU: Ошибка add_executable — CMake

VI: Lỗi add_executable - CMake

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