How to install gcc on centos7?

How to install gcc on centos7: First enter the system root directory and enter the command [[root@localhost ~]yum -y install gcc gcc-c autoconf make]; then complete the online automatic installation and enter the relevant commands That’s it.

How to install gcc in centos7:

1. Install gcc online (network configuration required)

After installing CentOS7 on the virtual machine VMware Workstation, the system does not have gcc. Enter the system root directory [root@localhost ~] and enter the command:

 [root@localhost ~]yum -y install gcc gcc-c++ autoconf make

, and the online installation will be automatically performed. After completion, enter the command:

 [root@localhost ~]#gcc --help

When the gcc command help appears, the installation is correct.

two. Simple application

We first use the gcc command to write a simple c file.

1. Enter the command:

[root@localhost ~]#vi  helloworld.c   //进入vi编辑器写一个helloworld的c文件。
          #include<stdio.h>
          int main(void)
         { 
         printf(“helloworld !\n”);
          }     //写完按esc，接着按shift+：并输入wq保存退出

2. Enter the command:

 [root@localhost ~]#gcc  helloworld.c //这个命令程序生成默认文件a.out

You can use the following command to view:

 [root@localhost ~]#find / -name  a.out

3. We can use The following command runs this c file:

[root@localhost ~]#gcc -o helloworld helloworld.c //-o 产生可执行的文件名字helloworld

4. Enter the command:

    [root@localhost ~]#gcc -g helloworld.c  -o helloworld  // -g 能被gue调试

Enter the command:

[root@localhost ~]gcc -S helloworld.c  //-S 产生汇编文件后停止编译,后缀名以.s结尾。

We can use the vi editor to view the assembly file:

 [root@localhost ~]# vi  helloworld.s

Enter the command:

[root@localhost ~]#gcc  -E  helloworld.c // -E 选项告诉编译器仅对文件进行预处理并输出到屏幕上

Recommended related tutorials: centos tutorial

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