about summary refs log tree commit diff
path: root/misc/sgtty.h
diff options
context:
space:
mode:
Diffstat (limited to 'misc/sgtty.h')
-rw-r--r--misc/sgtty.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/misc/sgtty.h b/misc/sgtty.h
index 00d13a4417..29acb59292 100644
--- a/misc/sgtty.h
+++ b/misc/sgtty.h
@@ -22,6 +22,10 @@ Cambridge, MA 02139, USA.  */
 
 #include <sys/ioctl.h>
 
+/* On some systems this type is not defined by <ioctl-types.h>;
+   in that case, the functions are just stubs that return ENOSYS.  */
+struct sgttyb;
+
 __BEGIN_DECLS
 
 /* Fill in *PARAMS with terminal parameters associated with FD.  */