compiler list

dpkg --list | grep compiler
ii  gcc                                    4:4.6.3-1ubuntu5                        GNU C compiler
ii  gcc-4.6                                4.6.3-1ubuntu5                          GNU C compiler
ii  libprotoc7                             2.4.1-1ubuntu2                          protocol buffers compiler library
ii  protobuf-compiler                      2.4.1-1ubuntu2                          compiler for protocol buffer definition files