Software⏱️ 2 min read📅 2026-06-03

How to Fix: Linux c++ error: undefined reference to 'dlopen'

Linux C++ error: undefined reference to 'dlopen'. Solution involves linking the library correctly in Eclipse.

Quick Answer: Ensure the library is linked correctly in Eclipse by adding the library to the project's linker settings. The correct command for this is "-lCEDD_LIB". Make sure the library file exists at the specified path and that the library is installed on the system.

To resolve the 'undefined reference to 'dlopen'' error in your C++ code, you need to ensure that the library you are trying to link against is properly linked and included.

🛑 Root Causes of the Error

  • Missing library or incorrect library path.

🚀 How to Resolve This Issue

Method 1: Adding the Library Manually

  1. Step 1: Add the library to your project's linker settings. You can do this by right-clicking on the file you want to link and selecting 'Build Path' > 'Add Library...'. Navigate to the location of the library (e.g., /lib/CEDD_LIB.so.6) and select it.

Method 2: Using a Package Manager

  1. Step 1: Install the required library using your package manager (e.g., apt-get for Debian-based systems). Run the command 'sudo apt-get install libcedd-dev' to install the CEDD library.

🎯 Final Words

By following these steps, you should be able to resolve the 'undefined reference to 'dlopen'' error and successfully compile your C++ code.

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