Linux Common Tools (ii) __linux

(ii) GCC tool chain

1.GCC is the GNU Compiler collection The GNU compiler family

2. Simple compilation

Example: #include <stdio.h>

int main ()

{

printf ("Hello world!\n");

Return0;

}

Compile instruction gcc Test.c-o test to generate the test executable./test execution

3. Compile Four Stages

(1) Preprocessing (header file expansion)

Example: Gcc-e test.c-o test.i

(2) Compile (grammar check, convert C language into assembly language)

Example: Gcc-s test.i-o Test.s

(3) compilation (Translate assembly language into binary file)

Example: Gcc-c test.s-o TEST.O

(4) Link (link binary file to library)

Example: GCC test.o-o test

4. Compilation of multiple Program Files

Example: GCC test1.c test2.c-o test

5.GCC Common Instructions

-C: Just compile not connected, generate target file ". O"

-S: Just compile not assembler, generate assembly code

-E: precompiling only, no other processing

-G: Include standard debugging information in an executable program

-o File: Export output to File

-I dir: add dir directory to the search path list of header files

-static: Link Static Library

-I library: link Libraries file