cc65 ☆

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Description:
6502 C compiler

Type: Formula | Latest Version: 2.19@0 | Tracked Since: Dec 17, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: compiler c 6502 retro cross-compile development

Install: brew install cc65

About:
cc65 is a cross-compiler suite for 6502-based systems, providing a C compiler, assembler, and linker. It enables developers to write C code for classic 8-bit platforms like the NES, Commodore 64, and Apple II. Its main value is bringing modern C development workflows to vintage hardware.

Key Features:

Full C compiler targeting 6502 microprocessor
Assembler and linker for creating executables
Support for many 6502-based systems (NES, C64, Apple II, etc.)
Standard C library implementation for supported targets

Use Cases:

Developing homebrew games for 8-bit consoles like the NES
Creating new software for retro computers like the Commodore 64
Porting C applications to embedded 6502 systems

Alternatives:

llvm-mos – A more modern and often more optimizing compiler toolchain for 6502 targets.
cc65 (original) – The upstream project; Homebrew provides a convenient, up-to-date packaging.

License: Zlib

Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, arm64_ventura, arm64_monterey, arm64_big_sur, sonoma, ventura, monterey, big_sur, catalina, arm64_linux, x86_64_linux

Important Notes:

Library files have been installed to:
  $HOMEBREW_PREFIX/Cellar/cc65/2.19/share/cc65

Version History

Detected	Version	Rev	Change	Commit
Sep 11, 2025 9:10am		0	VERSION_BUMP	00e31106