how_to_link_to_your_project.md

How to link JetsonGPIO to your project

Important

To build your code with JetsonGPIO, C++11 or higher is required.

With CMake

Add this to your CMakeLists.txt

find_package(JetsonGPIO)

assuming you added a target called mytarget, then you can link it with:

target_link_libraries(mytarget JetsonGPIO::JetsonGPIO)

Without installation

If you don't want to install the library you can add it as an external project with CMake's FetchContent(cmake 3.11 or higher is required):

include(FetchContent)
FetchContent_Declare(
  JetsonGPIO 
  GIT_REPOSITORY https://github.com/pjueon/JetsonGPIO.git 
  GIT_TAG master
)
FetchContent_MakeAvailable(JetsonGPIO)

target_link_libraries(mytarget JetsonGPIO::JetsonGPIO)

The code will be automatically fetched at configure time and built alongside your project.

Important

This method does not automatically set user permissions, so you will need to set them manually or run your code with root permissions. To set user permissions, execute the scripts/post_install.sh script. Assuming you are in build directory:

sudo bash ../scripts/post_install.sh

Without CMake

The following example shows how to compile your code with JetsonGPIO:

# you can use any other compiler instead of g++  
g++ -o your_program_name [your_source_codes...] -lJetsonGPIO -lpthread

Note

• All the header files are installed in /usr/local/include by default.
• JetsonGPIO has dependency on pthread due to the use of std::thread. Therefore, pthread should be linked to your code as well.