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A Practical Guide to Commonly Used GCC Compiler Flags

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A developer has published a reference guide covering essential flags for the GNU C Compiler (GCC). The guide explains flags for compiling without linking (-c), specifying output filenames (-o), and linking external libraries (-l), along with directory search options for headers (-I) and libraries (-L). It also covers optimization levels ranging from -O0 for debugging to -O3 for maximum speed, and the -std flag for selecting a specific C language standard. Additional flags covered include -g for embedding debugger-friendly information, -E for running only the preprocessor, and -D for defining macros at the command line. The notes serve as a quick-reference resource for developers working with GCC in C projects.

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