GNU Compiler Collection

Abbreviation for the software known as the GNU Compiler Collection. Its function is to transform a program's source code written in a programming language(especially in C, C++, among others) into a binary file which can be executed by a computer. The Gnu Compiler collection is included in most GNU/Linux distributions as the default compiler. It is licensed as free software. It uses the GNU GPL (General Public license).

The Official GCC homepage