-#elif defined __sferror /* FreeBSD, NetBSD, OpenBSD, MacOS X, Cygwin */
- fp->_flags |= __SERR;
-#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, mingw */
- fp->_flag |= _IOERR;
-#else /* unknown */
+#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
+ fp_->_flags |= __SERR;
+#elif defined __EMX__ /* emx+gcc */
+ fp->_flags |= _IOERR;
+#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */
+ fp_->_flag |= _IOERR;
+#elif defined __UCLIBC__ /* uClibc */
+ fp->__modeflags |= __FLAG_ERROR;
+#elif defined __QNX__ /* QNX */
+ fp->_Mode |= 0x200 /* _MERR */;
+#elif defined __MINT__ /* Atari FreeMiNT */
+ fp->__error = 1;
+#elif 0 /* unknown */