diff --git a/share/mk/bsd.own.mk b/share/mk/bsd.own.mk
index ea660dde07b..790582f4ccc 100644
--- a/share/mk/bsd.own.mk
+++ b/share/mk/bsd.own.mk
@@ -295,6 +295,7 @@ WITH_IDEA=
     BLUETOOTH \
     BOOT \
     CALENDAR \
+    CDDL \
     CPP \
     CRYPT \
     CVS \
diff --git a/tools/build/options/WITHOUT_CDDL b/tools/build/options/WITHOUT_CDDL
new file mode 100644
index 00000000000..909c52ba716
--- /dev/null
+++ b/tools/build/options/WITHOUT_CDDL
@@ -0,0 +1,2 @@
+.\" $FreeBSD$
+Set to not build code licensed under Sun's CDDL.