make echoing work.
diff --git a/src/cmd/9term/mkfile b/src/cmd/9term/mkfile
index 81af3bc..8b06911 100644
--- a/src/cmd/9term/mkfile
+++ b/src/cmd/9term/mkfile
@@ -13,3 +13,5 @@
 
 LDFLAGS=-L$X11/lib -lX11
 
+Linux.$O: bsdpty.c
+