Index: cmake/Modules/HandleLibCXXABI.cmake
===================================================================
--- cmake/Modules/HandleLibCXXABI.cmake
+++ cmake/Modules/HandleLibCXXABI.cmake
@@ -79,6 +79,7 @@
   if (LIBCXX_CXX_ABI_INTREE)
     # Link against just-built "cxxabi" target.
     set(CXXABI_LIBNAME cxxabi)
+    set(LIBCXX_LIBCPPABI_VERSION "2" PARENT_SCOPE)
   else()
     # Assume c++abi is installed in the system, rely on -lc++abi link flag.
     set(CXXABI_LIBNAME "c++abi")
Index: lib/CMakeLists.txt
===================================================================
--- lib/CMakeLists.txt
+++ lib/CMakeLists.txt
@@ -57,6 +57,10 @@
 append_if(LIBCXX_LINK_FLAGS LIBCXX_HAS_NODEFAULTLIBS_FLAG -nodefaultlibs)
 
 if ( APPLE )
+  if (NOT DEFINED LIBCXX_LIBCPPABI_VERSION)
+    set(LIBCXX_LIBCPPABI_VERSION "2")
+  endif()
+
   if ( CMAKE_OSX_DEPLOYMENT_TARGET STREQUAL "10.6" )
     list(APPEND LIBCXX_COMPILE_FLAGS "-U__STRICT_ANSI__")
     list(APPEND LIBCXX_LINK_FLAGS
Index: test/libcxx/test/config.py
===================================================================
--- test/libcxx/test/config.py
+++ test/libcxx/test/config.py
@@ -439,7 +439,10 @@
         elif cxx_abi == 'libsupc++':
             self.cxx.link_flags += ['-lsupc++']
         elif cxx_abi == 'libcxxabi':
-            self.cxx.link_flags += ['-lc++abi']
+            # Don't link libc++abi explicitly on OS X because the symbols
+            # should be available in libc++ directly.
+            if self.target_info.platform() != 'darwin':
+                self.cxx.link_flags += ['-lc++abi']
         elif cxx_abi == 'libcxxrt':
             self.cxx.link_flags += ['-lcxxrt']
         elif cxx_abi == 'none':