Post-Modern CMake - From 3.0 to 4.0

Explore the evolution of CMake from version 3.0 to the newly released 4.0 in this comprehensive conference talk delivered at C++Now 2025. Discover the significant features and improvements that have been introduced over the past decade of CMake development, understanding how the concept of "modern CMake" has evolved alongside the tool itself. Learn what CMake-based projects should look like in the new 4.0 era and gain insights into best practices for contemporary C++ build systems. Examine the transition from traditional CMake approaches to post-modern methodologies, with practical guidance on leveraging the latest capabilities for more efficient and maintainable build configurations. The presentation covers key developments that have shaped CMake's evolution, providing C++ developers with essential knowledge for adopting current standards and preparing for future developments in build tooling. Benefit from the expertise of Vito Gamberini, a former Naval Nuclear Propulsion community member turned C++ developer and educator, who brings extensive experience from his work at Kitware on build tooling for various language communities, with particular focus on C/C++ development.