GCC: Compiling C Programs to produce 32 and 64 bit Binaries

by prashere 8 years ago

GNU/Linux ◆ xterm-256color ◆ bash 2150 views

GCC expanded as Gnu Compiler Collection is a Free Software Multi language Compiler collection that follows the ANSI Standards.

Here in this Terminal Cast, I show you how to compile a simple hello-world program and produce binary for both 32 and 64 bit machine. My computer is an 64 bit machine, so I can produce 64 bit as well as 32 bit binary, but if your machine is 32 bit machine, you can only produce binary for 32 bit architecture.

Also please note that I have installed gcc-multilib in order to generate binary for multiple architecture. If you have just gcc, you cannot use the -m flag that I have used above.

./output32

. (dot) in the above shell command denotes the current folder.
/ (slash) denotes the path of this current folder / directory.
output32 is the name of the binary executable.

I prefer and use vim as my text editor. You can use any text editor of your choice. Some common text editors that comes by default in GNU/Linux distributions,

gedit (Graphical Text Editor similar to Notepad and has more features like syntax highlighting, etc.,)
nano
vi (vim is vi improved)

More by prashere

Simple Http Server using Python as a file 02:04

by prashere 11 years ago

Blogging With Pelican - 1 04:53

by prashere 8 years ago

Learn Python The Hardway - Exercise 1 02:16

by prashere 9 years ago

Virtualenv for Python development 05:10

by prashere 11 years ago

See all

You can download this recording in asciicast v1 format, as a .json file.

Download

Replay in terminal

You can replay the downloaded recording in your terminal using the asciinema play command:

asciinema play 36902.json

If you don't have asciinema CLI installed then see installation instructions.

Use with stand-alone player on your website

Download asciinema player from the releases page (you only need .js and .css file), then use it like this:

<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" type="text/css" href="asciinema-player.css" />
</head>
<body>
  <div id="player"></div>
  <script src="asciinema-player.min.js"></script>
  <script>
    AsciinemaPlayer.create(
      '/assets/36902.json',
      document.getElementById('player'),
      { cols: 76, rows: 22 }
    );
  </script>
</body>
</html>

See asciinema player quick-start guide for full usage instructions.

While this site doesn't provide GIF conversion at the moment, you can still do it yourself with the help of asciinema GIF generator utility - agg.

Once you have it installed, generate a GIF with the following command:

agg https://asciinema.org/a/36902 demo.gif

Or, if you already downloaded the recording file:

agg demo.cast demo.gif

Check agg --help for all available options. You can change font family and size, select color theme, adjust speed and more.

See agg manual for full usage instructions.