diff --git a/llvm/bindings/ocaml/bitreader/bitreader_ocaml.c b/llvm/bindings/ocaml/bitreader/bitreader_ocaml.c
index b154f68d6099..0fd484f12343 100644
--- a/llvm/bindings/ocaml/bitreader/bitreader_ocaml.c
+++ b/llvm/bindings/ocaml/bitreader/bitreader_ocaml.c
@@ -37,6 +37,9 @@ static void llvm_raise(value Prototype, char *Message) {
   
   raise_with_arg(Prototype, CamlMessage);
   abort(); /* NOTREACHED */
+#ifdef CAMLnoreturn
+  CAMLnoreturn; /* Silences warnings, but is missing in some versions. */
+#endif
 }
 
 
diff --git a/llvm/bindings/ocaml/executionengine/executionengine_ocaml.c b/llvm/bindings/ocaml/executionengine/executionengine_ocaml.c
index 58d7d5a77f66..0f124c546eeb 100644
--- a/llvm/bindings/ocaml/executionengine/executionengine_ocaml.c
+++ b/llvm/bindings/ocaml/executionengine/executionengine_ocaml.c
@@ -43,6 +43,9 @@ static void llvm_raise(value Prototype, char *Message) {
   
   raise_with_arg(Prototype, CamlMessage);
   abort(); /* NOTREACHED */
+#ifdef CAMLnoreturn
+  CAMLnoreturn; /* Silences warnings, but is missing in some versions. */
+#endif
 }
 
 
diff --git a/llvm/bindings/ocaml/llvm/llvm_ocaml.c b/llvm/bindings/ocaml/llvm/llvm_ocaml.c
index 5c8767543f22..3f48887e11f4 100644
--- a/llvm/bindings/ocaml/llvm/llvm_ocaml.c
+++ b/llvm/bindings/ocaml/llvm/llvm_ocaml.c
@@ -45,6 +45,9 @@ static void llvm_raise(value Prototype, char *Message) {
   
   raise_with_arg(Prototype, CamlMessage);
   abort(); /* NOTREACHED */
+#ifdef CAMLnoreturn
+  CAMLnoreturn; /* Silences warnings, but is missing in some versions. */
+#endif
 }