How to Install GCC on Debian 11

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GCC, the GNU Compiler Collection is a compiler system developed to support various programming languages. GCC is the standard compiler for most projects related to GNU and Linux, including the Linux kernel.

Installing GCC on Debian

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Debian repositories contain build-essential package which contains the GCC compiler, g++ and make

Debian an existing system by running following command

apt upgrade 

apt install build-essential

If you want to install the manual page for GCC, run the below command,

apt-get install manpages-dev

After installing, to verify that GCC is successfully installed by checking gcc version,

gcc --version

Output:

root@server:~# gcc --version
gcc (Debian 10.2.1-6) 10.2.1 20210110
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Compiling a Hello World Example

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Create a basic C code source, eg: let's create a hello world C program and open hello.c text file,

nano hello.c

Add the following code to hello.c file

// hello.c
#include <stdio.h>

int main() {
    printf("Hello, world!\n");
    return 0;
}

Compile it into an executable and execute the hello program by running the following commands,

gcc hello.c -o hello

./hello

Output:

root@server:~# ./hello 
Hello, world!