GNU Assembler
| GNU Assembler | |
|---|---|
| Developer | GNU Project |
| Initial release | 1986 |
| Stable release | GNU Binutils 2.46
/ 8 February 2026 |
| Written in | C |
| Platform | Cross-platform |
| Type | Assembler |
| License | GNU General Public License v3 |
| Website | www |
The GNU Assembler, commonly known as gas or as, is the assembler developed by the GNU Project. It is the default back-end of GCC. It is used to assemble the GNU operating system and the Linux kernel, and various other software. It is a part of the GNU Binutils package.
The GAS executable is named as, the standard name for a Unix assembler. GAS is cross-platform, and both runs on and assembles for a number of different computer architectures. GAS is free software released under the GNU General Public License v3.