diff --git a/sim/erc32/ChangeLog b/sim/erc32/ChangeLog
index 108b6aeeba5..6d2fc63d1e5 100644
--- a/sim/erc32/ChangeLog
+++ b/sim/erc32/ChangeLog
@@ -1,3 +1,7 @@
+2021-02-06  Mike Frysinger  <vapier@gentoo.org>
+
+	* interf.c (sim_memory_map): Define.
+
 2021-02-06  Mike Frysinger  <vapier@gentoo.org>
 
 	* configure: Regenerate.
diff --git a/sim/erc32/interf.c b/sim/erc32/interf.c
index 5dd464b0ce7..ca2e9faea21 100644
--- a/sim/erc32/interf.c
+++ b/sim/erc32/interf.c
@@ -465,6 +465,12 @@ sim_complete_command (SIM_DESC sd, const char *text, const char *word)
   return NULL;
 }
 
+char *
+sim_memory_map (SIM_DESC sd)
+{
+  return NULL;
+}
+
 #if 0 /* FIXME: These shouldn't exist.  */
 
 int
diff --git a/sim/m32c/ChangeLog b/sim/m32c/ChangeLog
index ed4e0727efe..d4ca1144176 100644
--- a/sim/m32c/ChangeLog
+++ b/sim/m32c/ChangeLog
@@ -1,3 +1,7 @@
+2021-02-06  Mike Frysinger  <vapier@gentoo.org>
+
+	* gdb-if.c (sim_memory_map): Define.
+
 2021-02-06  Mike Frysinger  <vapier@gentoo.org>
 
 	* configure: Regenerate.
diff --git a/sim/m32c/gdb-if.c b/sim/m32c/gdb-if.c
index 5ada0b0bc17..92e447f17fa 100644
--- a/sim/m32c/gdb-if.c
+++ b/sim/m32c/gdb-if.c
@@ -707,6 +707,12 @@ sim_complete_command (SIM_DESC sd, const char *text, const char *word)
   return NULL;
 }
 
+char *
+sim_memory_map (SIM_DESC sd)
+{
+  return NULL;
+}
+
 void
 sim_info (SIM_DESC sd, int verbose)
 {
diff --git a/sim/rl78/ChangeLog b/sim/rl78/ChangeLog
index 2aa6a9bc91a..8d43bfd8590 100644
--- a/sim/rl78/ChangeLog
+++ b/sim/rl78/ChangeLog
@@ -1,3 +1,7 @@
+2021-02-06  Mike Frysinger  <vapier@gentoo.org>
+
+	* gdb-if.c (sim_memory_map): Define.
+
 2021-02-06  Mike Frysinger  <vapier@gentoo.org>
 
 	* configure: Regenerate.
diff --git a/sim/rl78/gdb-if.c b/sim/rl78/gdb-if.c
index 320db34f436..56717917e55 100644
--- a/sim/rl78/gdb-if.c
+++ b/sim/rl78/gdb-if.c
@@ -603,3 +603,9 @@ sim_complete_command (SIM_DESC sd, const char *text, const char *word)
 {
     return NULL;
 }
+
+char *
+sim_memory_map (SIM_DESC sd)
+{
+  return NULL;
+}