Automatic Enum Stringification in C via Build-Time Code Generation
The article presents a method for automatically generating enum-to-string conversion in C using build-time code generation and compiler debug metadata (DWARF). This approach eliminates manual maintenance of stringification functions and ensures synchronization with enum definitions. The solution incurs no runtime overhead and integrates with existing build tools.
- ▪The technique uses DWARF debug information generated by the compiler to extract enum definitions at build time.
- ▪Enum stringification is achieved without runtime reflection, using generated C source files that are compiled and linked normally.
- ▪The method reduces errors and maintenance effort by automating the creation of lookup tables for enums.
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Automatic Enum Stringification in C via Build-Time Code GenerationLeveraging compiler debug metadata (DWARF) to generate enum mappings with zero runtime overheadYair Lenga7 min read·Apr 23, 2026--ListenShareThe followup article: Automatic Enum Handling in C — Parsing, Validating and Iterating Covers additional topics related to using enum metadata.If you maintain C code, you’ve probably written enum-to-string conversion functions by hand. They work — until someone adds a new enum value and forgets to update them.When the enum values are assigned sequential values, it is possible to perform fast lookup with arrays, using designated initializers:enum ConnectionState { STATE_NONE, STATE_DISCONNECTED, STATE_CONNECTING, STATE_CONNECTED, STATE_ERROR, STATE_LAST};const char…
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