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FetchContent is a meta-repository system used in the Conan package manager for C and C++ projects. It is a toolset that allows developers to easily incorporate dependencies from other Conan repositories into their own projects, simplifying the process of writing code.

FetchContent uses a unique approach to managing dependencies, allowing Conan repositories to be treated as dependencies, rather than projects that must be built. This facilitates the reuse of code and speeds up development by reducing the time spent duplicating effort.

FetchContent operates through configuration files, such as FetchContent.at, which provide lists of dependencies to be applied. It can also handle transitive dependencies, ensuring that all relevant dependencies are correctly sourced and used.

The benefits of using FetchContent include improved project maintainability, faster development speed, and a reduced dependency tree. By efficiently managing dependencies, FetchContent makes it easier to collaborate on complex projects and increases overall productivity.

When using FetchContent, developers can easily manage complex projects with a high number of dependencies by using macro-based wizards in IDEs such as Visual Studio or Qt Creator. These wizards automate the process of creating the necessary configuration files, thereby reducing the amount of manual work involved.

FetchContent has a built-in test system, which ensures that the used dependencies are correctly applied and will not lead to unintended or incorrect binary builds.