diff --git a/src/systemc/core/sc_time.cc b/src/systemc/core/sc_time.cc
index 383d1d4..5d6b634 100644
--- a/src/systemc/core/sc_time.cc
+++ b/src/systemc/core/sc_time.cc
@@ -158,6 +158,27 @@
     warn("%s not implemented.\n", __PRETTY_FUNCTION__);
 }
 
+sc_time
+sc_time::from_value(sc_dt::uint64)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return sc_time();
+}
+
+sc_time
+sc_time::from_seconds(double)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return sc_time();
+}
+
+sc_time
+sc_time::from_string(const char *str)
+{
+    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    return sc_time();
+}
+
 const sc_time
 operator + (const sc_time &, const sc_time &)
 {
diff --git a/src/systemc/ext/core/sc_time.hh b/src/systemc/ext/core/sc_time.hh
index 32f7ead..d52ed81 100644
--- a/src/systemc/ext/core/sc_time.hh
+++ b/src/systemc/ext/core/sc_time.hh
@@ -75,6 +75,11 @@
     sc_time &operator /= (double);
 
     void print(std::ostream & =std::cout) const;
+
+    // Deprecated
+    static sc_time from_value(sc_dt::uint64);
+    static sc_time from_seconds(double);
+    static sc_time from_string(const char *str);
 };
 
 const sc_time operator + (const sc_time &, const sc_time &);