#if __gnu_hurd__
# define MK_OS_HURD 1
#endif
+#if __CYGWIN__
+# define MK_OS_CYGWIN 1
+#endif
#if defined(__MVS__)
# define MK_OS_ZOS 1
#endif
extern unsigned int no_intermediates;
#if HAVE_MKFIFO
-# if !defined(JOBSERVER_USE_FIFO) && !MK_OS_HURD
/* It seems that mkfifo() is not working correctly, or at least not the way
- GNU make wants it to work, on GNU/Hurd so don't use it there. */
+ GNU make wants it to work, on GNU/Hurd and Cygwin so don't use it there. */
+# if !defined(JOBSERVER_USE_FIFO) && !MK_OS_HURD && !MK_OS_CYGWIN
# define JOBSERVER_USE_FIFO 1
# endif
#endif