for the init_os_extras(). Since there is no header file
in Perl specific to cygwin, use perl.h.
p4raw-id: //depot/perl@18917
(PerlLIO_setmode(PerlIO_fileno(fp), mode) != -1 ? TRUE : FALSE)
#endif
+#ifdef __CYGWIN__
+void init_os_extras(void);
+#endif
+
#ifdef UNION_ANY_DEFINITION
UNION_ANY_DEFINITION;
#else