diff --git a/src/sdf/ftbsdf.c b/src/sdf/ftbsdf.c
new file mode 100644
index 000000000..93a4c65b0
--- /dev/null
+++ b/src/sdf/ftbsdf.c
@@ -0,0 +1,3 @@
+
+
+/* END */
diff --git a/src/sdf/ftsdf.c b/src/sdf/ftsdf.c
new file mode 100644
index 000000000..93a4c65b0
--- /dev/null
+++ b/src/sdf/ftsdf.c
@@ -0,0 +1,3 @@
+
+
+/* END */
diff --git a/src/sdf/ftsdf.h b/src/sdf/ftsdf.h
new file mode 100644
index 000000000..8e52a68ab
--- /dev/null
+++ b/src/sdf/ftsdf.h
@@ -0,0 +1,8 @@
+
+#ifndef FTSDF_H_
+#define FTSDF_H_
+
+
+#endif /* FTSDF_H_ */
+
+/* END */
diff --git a/src/sdf/ftsdfcommon.h b/src/sdf/ftsdfcommon.h
new file mode 100644
index 000000000..b8284ac68
--- /dev/null
+++ b/src/sdf/ftsdfcommon.h
@@ -0,0 +1,8 @@
+
+#ifndef FTSDFCOMMON_H_
+#define FTSDFCOMMON_H_
+
+
+#endif /* FTSDFCOMMON_H_ */
+
+/* END */
diff --git a/src/sdf/ftsdferrs.h b/src/sdf/ftsdferrs.h
new file mode 100644
index 000000000..d102e7fde
--- /dev/null
+++ b/src/sdf/ftsdferrs.h
@@ -0,0 +1,8 @@
+
+#ifndef FTSDFERRS_H_
+#define FTSDFERRS_H_
+
+
+#endif /* FTSDFERRS_H_ */
+
+/* END */
diff --git a/src/sdf/ftsdfrend.c b/src/sdf/ftsdfrend.c
new file mode 100644
index 000000000..93a4c65b0
--- /dev/null
+++ b/src/sdf/ftsdfrend.c
@@ -0,0 +1,3 @@
+
+
+/* END */
diff --git a/src/sdf/ftsdfrend.h b/src/sdf/ftsdfrend.h
new file mode 100644
index 000000000..08cfa4ca2
--- /dev/null
+++ b/src/sdf/ftsdfrend.h
@@ -0,0 +1,8 @@
+
+#ifndef FTSDFREND_H_
+#define FTSDFREND_H_
+
+
+#endif /* FTSDFREND_H_ */
+
+/* END */
diff --git a/src/sdf/sdf.c b/src/sdf/sdf.c
new file mode 100644
index 000000000..93a4c65b0
--- /dev/null
+++ b/src/sdf/sdf.c
@@ -0,0 +1,3 @@
+
+
+/* END */