When you click “run” or “compile” in your IDE, you will get a result from the program.
But what actually happens inside the computer?
Compliation Porcess
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|
=====> COMPILATION PROCESS <======
|
|----> Input is Source file(.c)
|
V
+=================+
| |
| C Preprocessor |
| |
+=================+
|
| ---> Pure C file ( comd:cc -E <file.name> )
|
V
+=================+
| |
| Lexical Analyzer|
| |
+-----------------+
| |
| Syntax Analyzer |
| |
+-----------------+
| |
| Semantic Analyze|
| |
+-----------------+ -----> Compiler
| |
| Pre Optimization|
| |
+-----------------+
| |
| Code generation |
| |
+-----------------+
| |
| Post Optimize |
| |
+=================+
|
|---> Assembly code (comd: cc -S <file.name> )
|
V
+=================+
| |
| Assembler |
| |
+=================+
|
|---> Object file (.obj) (comd: cc -c <file.name>)
|
V
+=================+
| Linker |
| and |
| loader |
+=================+
|
|---> Executable (.Exe/a.out) (com:cc <file.name> )
|
V
Executable file(a.out)
|
- A compiler reads, analyses and translates code into either an object file or a list of error messages.
- A assembler converts assemlby code to object files.
- A linker combines one or more object files and possible some library code into either some executable, some library or a list of error messages.
- A loader reads the executable code into memory, does some address translation and tries to run the program resulting in a running program or an error message (or both).
ref: https://www.youtube.com/watch?v=QXjU9qTsYCc