Crossrefer

Crossrefer is a utility program for the C programming language that generates cross-references for source code. It analyzes C source files and creates a database of identifiers, such as variables, functions, and macros, along with their locations within the code. This information is then used to generate reports that show where each identifier is defined and where it is used. Crossrefer is particularly useful for understanding the structure of large or complex C projects, as it helps developers quickly locate all instances of a particular symbol. The output of crossrefer can include information on function call graphs, variable scopes, and macro expansions. It aids in code comprehension, debugging, and refactoring by providing a clear overview of symbol relationships. While not as widely used as some modern IDE features for code navigation, crossrefer remains a valuable tool for static analysis of C code, especially in environments where sophisticated IDEs are not available or preferred. Its command-line interface makes it suitable for integration into build systems and automated code analysis pipelines. The tool helps identify potential issues by highlighting unused variables or functions and can contribute to improved code maintainability.