From C Code to Executable The FULL Compilation Process Step by Step
Title: From C Code to Executable: The FULL Compilation Process Step-by-Step
Description:
Learn exactly how your C code becomes an executable! In this video, we break down the 5 stages of compilation: preprocessor, compiler, assembler, linker, and loader. Whether you're a beginner or looking to deepen your understanding, this step-by-step guide will demystify what happens behind the scenes when you hit "compile".
What You'll Learn:
Preprocessing: How #include and #define work (with live macro replacement demo).
Compilation: Turning C code into assembly language.
Assembly: Converting assembly to machine code (object files).
Linking: Merging object files and libraries to create the final executable.
Loading: How your OS runs the program in memory.
Live Demo Includes:
Using GCC flags (-E, -S, -c) to see intermediate files (.i, .s, .o).
Exploring symbol tables with "nm" (understanding "U" and "T" symbols).
Fixing common linker errors (e.g., missing libraries).
Commands Used:
gcc -E main.c -o main.i (Preprocess)
gcc -S main.i -o main.s (Compile to assembly)
gcc -c main.s -o main.o (Assemble to object file)
gcc main.o -o main (Link)
./main (Run the executable)
Got questions? Drop them in the comments! I'll reply to as many as I can.
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