+#if !defined(PERL_MOUNT_NOEXEC) && defined(MOUNT_NOEXEC)
+# define PERL_MOUNT_NOEXEC MOUNT_NOEXEC
+#endif
+#if !defined(PERL_MOUNT_NOEXEC) && defined(MNT_NOEXEC)
+# define PERL_MOUNT_NOEXEC MNT_NOEXEC
+#endif
+#if !defined(PERL_MOUNT_NOEXEC) && defined(MS_NOEXEC)
+# define PERL_MOUNT_NOEXEC MS_NOEXEC
+#endif
+#if !defined(PERL_MOUNT_NOEXEC) && defined(M_NOEXEC)
+# define PERL_MOUNT_NOEXEC M_NOEXEC
+#endif
+