--- gcc-versionno-orig/gcc/d/d-spec.cc	2019-12-17 12:52:56.000000000 +0000
+++ gcc-versionno/gcc/d/d-spec.cc	2019-12-17 12:58:42.316197941 +0000
@@ -514,3 +514,10 @@
 
 int lang_specific_extra_outfiles = 0;  /* Not used for D.  */
 
+/* lang_register_spec_functions register the D associated spec
+   functions.  Not used for D.  */
+
+void
+lang_register_spec_functions (void)
+{
+}
