Search for "Edit the system environment variables" in your start menu.
On macOS, it is common to build cc65 from source to ensure compatibility with Apple Silicon (M1/M2/M3).
Open Terminal and run: git clone https://github.com/cc65/cc65.git
Navigate to the official cc65 website and click on the Windows Snapshot link. This will typically lead you to a SourceForge page where you can download cc65-snapshot-win64.zip (or the 32-bit version if needed).
Unzip the contents to a simple directory path without spaces, such as C:\cc65 .
For Windows users, the easiest method is to download a pre-built binary snapshot.
Click and enter the full path to your bin folder (e.g., C:\cc65\bin ). 2. Downloading and Building CC65 for macOS
