How Can I Detect and Remove Redundant Header Files in C/C ?

Detecting Redundant Header Inclusions in C/C

Managing header files in C/C projects can become cumbersome over time. Unnecessary header inclusions not only prolong compilation times but also introduce unnecessary compilation dependencies. Identifying these redundant #includes can be a time-consuming manual task.

Fortunately, several tools have been developed to address this problem:

Google's cppclean:
cppclean is a versatile tool that can detect a wide range of C issues, including superfluous #include directives. It can identify headers that are included but not used, helping developers streamline their codebase.

include-what-you-use:
This Clang-based tool provides comprehensive analysis of header dependencies. It can not only detect unused #includes but also suggest forward declarations to minimize header inclusions. It even has an optional feature to automatically clean up #include statements.

Eclipse CDT:
Modern versions of Eclipse CDT offer an Organize Includes feature under the Source menu. This feature can alphabetize #include statements, add missing headers based on usage analysis, and comment out unneeded ones. While this feature provides some assistance, it may not be 100% reliable.

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