The 'ccompiler4pic32' project is a community build of Microchip Technology's GCC (GNU Compiler Collection) based MPLAB® C Compiler for PIC32 MCUs. This is a cross compiler that allows you to build C projects targeting Microchip's PIC32 family of 32-bit embedded microcontrollers on your Windows, Linux, or Mac OS X host machine. Source: https://github.com/ccompiler4pic32