Package with most important of GNU Coreutils for Windows - echo, make, mkdir, rm, sh. make file is required for Makefile driven gcc compilation. The rest of files allow Makefile to use decent shell calls (through $(shell ...) command) for operations like creating directories (mkdir), removing of files / directories (rm) or printing some console messages (echo). Installer, created with Wix, allows users to choose the destination directory and adds appropriate path to PATH environment variable in system.