diff --git a/clang/lib/Basic/Targets/Hexagon.cpp b/clang/lib/Basic/Targets/Hexagon.cpp
--- a/clang/lib/Basic/Targets/Hexagon.cpp
+++ b/clang/lib/Basic/Targets/Hexagon.cpp
@@ -24,6 +24,8 @@
   Builder.defineMacro("__qdsp6__", "1");
   Builder.defineMacro("__hexagon__", "1");
 
+  Builder.defineMacro("__ELF__");
+
   // The macro __HVXDBL__ is deprecated.
   bool DefineHvxDbl = false;
 
diff --git a/clang/test/Preprocessor/hexagon-predefines.c b/clang/test/Preprocessor/hexagon-predefines.c
--- a/clang/test/Preprocessor/hexagon-predefines.c
+++ b/clang/test/Preprocessor/hexagon-predefines.c
@@ -96,3 +96,8 @@
 // CHECK-V67HVX-128B: #define __HVX_LENGTH__ 128
 // CHECK-V67HVX-128B: #define __HVX__ 1
 // CHECK-V67HVX-128B: #define __hexagon__ 1
+
+// RUN: %clang_cc1 -E -dM -triple hexagon-unknown-elf -target-cpu hexagonv67 \
+// RUN: -target-feature +hvxv67 -target-feature +hvx-length128b %s | FileCheck \
+// RUN: %s -check-prefix CHECK-ELF
+// CHECK-ELF: #define __ELF__ 1
diff --git a/compiler-rt/lib/builtins/CMakeLists.txt b/compiler-rt/lib/builtins/CMakeLists.txt
--- a/compiler-rt/lib/builtins/CMakeLists.txt
+++ b/compiler-rt/lib/builtins/CMakeLists.txt
@@ -492,7 +492,6 @@
 set(armv7em_SOURCES ${arm_SOURCES})
 
 # hexagon arch
-set(hexagon_SOURCES ${GENERIC_SOURCES} ${GENERIC_TF_SOURCES})
 set(hexagon_SOURCES
   hexagon/common_entry_exit_abi1.S
   hexagon/common_entry_exit_abi2.S
@@ -524,6 +523,8 @@
   hexagon/udivsi3.S
   hexagon/umoddi3.S
   hexagon/umodsi3.S
+  ${GENERIC_SOURCES}
+  ${GENERIC_TF_SOURCES}
 )