include-what-you-use
A Clang-based tool that analyzes #include directives in C/C++ source files to ensure proper header dependencies.
What is include-what-you-use?
Include What You Use (IWYU) is a Clang-based static analysis tool for C and C++ that analyzes `#include` directives in source files. It identifies unnecessary header inclusions and suggests missing ones to ensure each file includes exactly what it needs. This helps reduce compilation times, minimize coupling, and improve code maintainability.
C and C++ developers working on large codebases where build times and clean header dependencies are critical, particularly those using Clang-based toolchains.
Developers choose IWYU because it provides automated, compiler-accurate analysis of header dependencies, integrates with common build systems, and offers automated fixing tools to enforce clean include practices without manual effort.
Overview
A tool for use with clang to analyze #includes in C and C++ source files
Use Cases
Best For
- Reducing compilation times in large C/C++ projects
- Enforcing clean header dependencies and minimizing coupling
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