[Basic commands for embedded-GCC compiler]

The following is for the ARM series microprocessors

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1. GCC is a compilation tool under the Linux operating system environment. It can compile and connect source programs written in C\C++\assembly language into executable files, including the following four stages:

Source program	preprocessing stage	Compilation phase	Assembly stage	connection phase	executable file
	Without -c -S -E parameters, generate executable file
	-c, generate .o file
	-S, generate .s file
	-E, generate .i file

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2. GCC basic command format

GCC basic command format;

arm-linux-gcc [options]  [filenames]

Example:

[Fixed format] [Command parameters] [File name]

1. arm-linux-gcc      -o test     test.c executes the above four stages to generate the executable file test
2. arm-linux-gcc -c   -o test.o  test.c executes the first three stages and generates the target file test.o
3. arm-linux-gcc -S  -o test.s  test.c executes the first two stages and generates the assembly language file test.s
4. arm-linux-gcc -E  -o test.i    test.c executes the first stage and generates the file test.i
5. arm-linux-gcc -g  -o test      test.c executes the above four stages to generate an executable file test with debugging information.

Note: The green font indicates the name of the output file after compilation.

           For 2, if the -o test.o parameter is removed, the compiler will automatically generate a target file named test.o. Similarly,

           For 3, remove the -o test.s parameter, and the compiler will automatically generate an assembly language file named test.s.

Finished writing, 22.53, ready to wash up and go to bed!