How to Install Eigen C++ Library in Ubuntu 24.04 – Step-by-step

March 25, 2024 | By the+gnu+linux+evangelist.

GNU/Linux Ubuntu 24.04 Installing Eigen – QuickStart Guide

Hi! The Tutorial shows you Step-by-Step How to Install Eigen C++ Library in Ubuntu 24.04 Noble LTS GNU/Linux.

And Eigen for Ubuntu 24.04 is a C++ Template Library for Linear Algebra: Matrices, Vectors, Numerical Solvers, and related Algorithms.

It provides high-performance implementations of common linear algebra operations and data structures, making it a popular choice for scientific computing, machine learning, computer graphics, and other numerical computing tasks.

Here are some key points about Eigen:

  • Header-only Library: Eigen is a header-only library, meaning that you can include its headers directly in your C++ code without the need to link against separate libraries. This makes it easy to integrate Eigen into your projects.
  • Performance: Eigen is designed for high performance. It leverages expression templates and other optimization techniques to generate efficient code for common linear algebra operations, such as matrix multiplication, matrix decompositions, and solving linear systems.
  • Ease of Use: Eigen provides a clean and intuitive API for performing linear algebra operations. It uses operator overloading and expression templates to allow you to write code that looks like mathematical expressions, making your code more readable and maintainable.
  • Supported Operations: Eigen supports a wide range of linear algebra operations, including basic operations (addition, subtraction, multiplication, division), matrix decompositions (e.g., LU, QR, Eigenvalue decomposition), solving linear systems, computing determinants and inverses, and many others.
  • Expression Templates: Eigen uses expression templates to optimize the evaluation of complex expressions involving matrices and vectors. This allows it to generate efficient code without the need for temporary variables or intermediate copies of data.
  • Platform Independence: Eigen is designed to be platform-independent and works on a variety of operating systems and compilers. It has been tested on Windows, macOS, Linux, and other Unix-like systems.
  • Licensing: Eigen is licensed under the Mozilla Public License 2.0 (MPL2), which is a permissive open-source license that allows you to use, modify, and distribute the library freely, even in commercial projects.

Overall, Eigen is a powerful and versatile library for linear algebra in C++. Its combination of performance, ease of use, and platform independence makes it a popular choice for developers working on numerical computing tasks.

This guide make use of the Latest Eigen Source Code for a Quick & Easy Setup.

Finally, the article includes detailed Instructions on How to Getting-Started with Eigen C++ Programming.

Ubuntu 24.04 Eigen C++ Installation Guide - Featured
  1. 1. Downloading Eigen for Ubuntu

    Download Eigen for Ubuntu GNU/Linux

    Get Eigen .zip for Ubuntu

    If possible Select directly “Open with Archive Manager”!

  2. 3. Extracting Eigen Archive

    Then Extract Eigen Zip into /tmp Directory
    If it does Not Open automatically then Double-Click on File Manager:

    Or from Command Line:
    unzip -d /tmp ~/Downloads/Eigen*.zip
    You may need to Setup Unzip with:
    sudo apt install unzip


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