Cygwin's default consumer interface would be the bash shell managing while in the mintty terminal emulator.[25] The DLL also implements pseudo terminal (pty) gadgets, and Cygwin ships with several terminal emulators which can be depending on them, which includes rxvt/urxvt and xterm. The version of GCC that comes with Cygwin https://acgwin29628.elbloglibre.com/37151584/acgwin-no-further-a-mystery