cttyhack: new applet.
diff --git a/shell/Kbuild b/shell/Kbuild
index 6b58040..944eaff 100644
--- a/shell/Kbuild
+++ b/shell/Kbuild
@@ -9,3 +9,5 @@
 lib-$(CONFIG_HUSH) += hush.o
 lib-$(CONFIG_LASH) += lash.o
 lib-$(CONFIG_MSH)  += msh.o
+
+lib-$(CONFIG_CTTYHACK) += cttyhack.o