|WINAVR is (or was) a great project. Its most “recent” package is from 2010-01-20. In other words, it is outdated. There are many projects that attempted to replace it but none of them (AFAIK) is extremely popular. We’ve put together a very detailed guide on how to setup everything manually – AVR GCC Toolchain – Setup for Windows.|
WinAVR is a great tool to do development for Atmel AVR micro-controllers on the Microsoft Windows platform. It consists of all the necessary C/C++ compiler, linkers and other GCC tools that you need to write, build and program those micro-controllers.
The guide was tested mostly under Microsoft Windows 8.1 operating system.
Please go to WinAVR – Setup Guide page to read the entire document.