Building 1D/2D Barcode Reader with C++ and CMake

This repository contains examples demonstrating how to utilize the Dynamsoft Barcode Reader SDK to build barcode and QR code detection applications with C++ and CMake on Windows, Linux, macOS, and Raspberry Pi.

Prerequisites

• Obtain a 30-day free trial license for Dynamsoft Barcode Reader. Update the following code in main.cxx:

  DBR_InitLicense(license, errorMsgBuffer, 512);

• OpenCV Installation

  1. Download OpenCV

  2. Configure the environment variable OpenCV_DIR to the path of the OpenCV installation directory.

  3. Add the following lines to the CMakeLists.txt file:

     # Find OpenCV, you may need to set OpenCV_DIR variable
     # to the absolute path to the directory containing OpenCVConfig.cmake file
     # via the command line or GUI
     find_package(OpenCV REQUIRED)

Supported Platforms

• Windows x64
• Linux x64/ARM64/ARM32
• macOS x64 (Intel/Apple Silicon)

How to Build a CMake Project

Windows

1. Create a build folder:

   mkdir build
   cd build

2. Configure and build the project:

   # x86
   cmake -DCMAKE_GENERATOR_PLATFORM=x86 ..
   
   # x64
   cmake -DCMAKE_GENERATOR_PLATFORM=x64 ..
   
   cmake --build . --config release

   For MinGW:

   cmake -G "MinGW Makefiles" ..

Linux and Raspberry Pi OS

1. Install CMake:

   sudo apt-get install cmake

2. Create a build folder:

   mkdir build
   cd build

3. Configure and build the project:

   cmake ..
   cmake --build . --config release 

macOS

1. Install CMake:

   brew install cmake

2. Create a build folder:

   mkdir build
   cd build

3. Configure and build the project:

   cmake ..
   cmake --build . --config release 

Examples

• Command Line

  ./main [image-file] [optional: license-file] [optional: template-file]

  

• Barcode Image File

  ./main 

  

• Camera Scanning

  ./main

  

• Raspberry Pi with OLED Display

  ./main

  

Blog

• CMake: Build C++ Project for Windows, Linux and macOS
• My First C/C++ App Built with CMake on Windows
• How to Port Visual Studio C++ Project to Linux with CMake
• Transforming Raspberry Pi 4 into a Barcode Scanner with a C++ App, USB Camera, and OLED Display