Index: compiler-rt/trunk/lib/lsan/CMakeLists.txt
===================================================================
--- compiler-rt/trunk/lib/lsan/CMakeLists.txt
+++ compiler-rt/trunk/lib/lsan/CMakeLists.txt
@@ -5,7 +5,8 @@
 
 set(LSAN_COMMON_SOURCES
   lsan_common.cc
-  lsan_common_linux.cc)
+  lsan_common_linux.cc
+  lsan_common_mac.cc)
 
 set(LSAN_SOURCES
   lsan.cc
Index: compiler-rt/trunk/lib/lsan/lsan_common_mac.cc
===================================================================
--- compiler-rt/trunk/lib/lsan/lsan_common_mac.cc
+++ compiler-rt/trunk/lib/lsan/lsan_common_mac.cc
@@ -0,0 +1,40 @@
+//=-- lsan_common_mac.cc --------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of LeakSanitizer.
+// Implementation of common leak checking functionality. Darwin-specific code.
+//
+//===----------------------------------------------------------------------===//
+
+#include "sanitizer_common/sanitizer_platform.h"
+#include "lsan_common.h"
+
+#if CAN_SANITIZE_LEAKS && SANITIZER_MAC
+namespace __lsan {
+
+void InitializePlatformSpecificModules() {
+  CHECK(0 && "unimplemented");
+}
+
+// Scans global variables for heap pointers.
+void ProcessGlobalRegions(Frontier *frontier) {
+  CHECK(0 && "unimplemented");
+}
+
+void ProcessPlatformSpecificAllocations(Frontier *frontier) {
+  CHECK(0 && "unimplemented");
+}
+
+void DoStopTheWorld(StopTheWorldCallback callback, void *argument) {
+  CHECK(0 && "unimplemented");
+}
+
+} // namespace __lsan
+
+#endif // CAN_SANITIZE_LEAKS && SANITIZER_MAC
Index: compiler-rt/trunk/lib/sanitizer_common/CMakeLists.txt
===================================================================
--- compiler-rt/trunk/lib/sanitizer_common/CMakeLists.txt
+++ compiler-rt/trunk/lib/sanitizer_common/CMakeLists.txt
@@ -25,6 +25,7 @@
   sanitizer_stackdepot.cc
   sanitizer_stacktrace.cc
   sanitizer_stacktrace_printer.cc
+  sanitizer_stoptheworld_mac.cc
   sanitizer_suppressions.cc
   sanitizer_symbolizer.cc
   sanitizer_symbolizer_libbacktrace.cc
Index: compiler-rt/trunk/lib/sanitizer_common/sanitizer_stoptheworld_mac.cc
===================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_stoptheworld_mac.cc
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_stoptheworld_mac.cc
@@ -0,0 +1,38 @@
+//===-- sanitizer_stoptheworld_mac.cc -------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// See sanitizer_stoptheworld.h for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "sanitizer_platform.h"
+
+#if SANITIZER_MAC && (defined(__x86_64__) || defined(__aarch64__))
+
+#include "sanitizer_stoptheworld.h"
+
+namespace __sanitizer {
+void StopTheWorld(StopTheWorldCallback callback, void *argument) {
+  CHECK(0 && "unimplemented");
+}
+
+int SuspendedThreadsList::GetRegistersAndSP(uptr index,
+                                            uptr *buffer,
+                                            uptr *sp) const {
+  CHECK(0 && "unimplemented");
+  return 0;
+}
+
+uptr SuspendedThreadsList::RegisterCount() {
+  CHECK(0 && "unimplemented");
+  return 0;
+}
+} // namespace __sanitizer
+
+#endif  // SANITIZER_MAC && (defined(__x86_64__) || defined(__aarch64__))