Index: readline-8.2/examples/rlfe/pty.c
===================================================================
--- readline-8.2.orig/examples/rlfe/pty.c
+++ readline-8.2/examples/rlfe/pty.c
@@ -50,6 +50,10 @@
 # include <sys/pty.h>
 #endif
 
+#ifdef __GNU__
+# include <pty.h>
+#endif
+
 #ifdef sgi
 # include <sys/sysmacros.h>
 #endif /* sgi */