GCC的简单使用 - webdancer's Blog
GCC的简单使用
这学期要学操作系统的课程设计了,编译器的学习是必需的了。当然,由于平台基于Linux,所以学习GCC是必须的了。
GCC 是“GNU Compiler Collection” 的简称,而不是以前的 “GNU C Compiler “。它支持 c ,c++,object-c,objectc+,Fortran,Java和Ada。 GCC编译器的选项真的非常之多,通常可以分成三种:
1.平台相关的选项。所谓的平台,是指机器(主要是芯片)和OS。下表:
Hardware |
Operating System
|
PowerPC |
Linux
|
Sparc |
Linux
|
ARM |
Linux
|
Intel x86 |
Cygwin Linux
|
2.语言相关的选项。
3.一般性选项。
GCC的编译过程:
预处理、编译、汇编、链接;通过一定的gcc选项,可以使编译过程停留在某一阶段。例如:-C 可以阻止链接过程,只是产生目标文件。文件的后缀通常决定怎么编译。例如:
.a |
Static object library (archive). |
.c |
C source code that is to be preprocessed. |
.h |
C source code header file. |
.i |
C source code that is not to be preprocessed. This type of file is produced as an intermediate step in compilation. |
.o |
An object file in a format appropriate to be supplied to the linker. This type of file is produced as an intermediate step in compilation. |
.s |
Assembly language code. This type of file is produced as an intermediate step in compilation. |
集中常用的gcc命令:
(1)、单个源文件产生可执行文件。
命令:源文件:a.c
gcc a.c
结果:产生a.out 可执行文件。
(2)、产生目标文件。
命令:gcc -c a.c -o a.o
结果:产生a.o目标文件。
(3)、多个源文件产生可执行文件。
命令: gcc a.c b.c -o a
(4)、预处理。
命令: gcc -E a.c -o a.i
(5)、产生汇编文件。
命理: gcc -S a.c
(6)、创建静态库。
命令:gcc -c a.c b.c
ar -r liba.a a.o b.o
(7)、创建动态库。
命令:gcc -c -fpic a.c b.c
gcc -shared a.o b.o -o a.so
(8)、避免后缀转换。
命令: gcc -xc a.ccc (-x 后面跟具体的语言。)
2022年9月24日 20:31
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