```

LINK ./unittests

FAILED: unittests 

TOOL_VERSION=1606820901 ../../build/toolchain/mac/linker_driver.py 
-Wcrl,strippath,/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/strip
 
../../third_party/llvm-build/Release+Asserts/bin/clang++ -B 
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/
  
-Wl,-fatal_warnings -stdlib=libc++ -arch x86_64 -Werror -nostdlib++ 
-isysroot 
../../../../../../../../Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.0.sdk
 
-mmacosx-version-min=10.10.0 -Wl,-ObjC -Wl,-rpath,@loader_path/. 
-Wl,-rpath,@loader_path/../../.. -o "./unittests" 
-Wl,-filelist,"./unittests.rsp"   ./libv8_for_testing.dylib 
./libv8_libbase.dylib ./libv8_libplatform.dylib ./libicui18n.dylib 
./libicuuc.dylib ./libv8_cppgc_shared_for_testing.dylib ./libc++.dylib 

ld: warning: direct access in function 
'testing::internal::SuiteApiResolver<testing::internal::(anonymous 
namespace)::FailureTest>::GetSetUpCaseOrSuite(char const*, int)' from file 
'obj/third_party/googletest/gtest/gtest.o' to global weak symbol 
'testing::Test::SetUpTestSuite()' from file 
'obj/test/unittests/unittests_sources/access-check-unittest.o' means the 
weak symbol cannot be overridden at runtime. This was likely caused by 
different translation units being compiled with different visibility 
settings.

ld: warning: direct access in function 
'testing::internal::SuiteApiResolver<testing::internal::(anonymous 
namespace)::FailureTest>::GetSetUpCaseOrSuite(char const*, int)' from file 
'obj/third_party/googletest/gtest/gtest.o' to global weak symbol 
'testing::Test::SetUpTestCase()' from file 
'obj/test/unittests/unittests_sources/access-check-unittest.o' means the 
weak symbol cannot be overridden at runtime. This was likely caused by 
different translation units being compiled with different visibility 
settings.

ld: warning: direct access in function 
'testing::internal::SuiteApiResolver<testing::internal::(anonymous 
namespace)::FailureTest>::GetTearDownCaseOrSuite(char const*, int)' from 
file 'obj/third_party/googletest/gtest/gtest.o' to global weak symbol 
'testing::Test::TearDownTestSuite()' from file 
'obj/test/unittests/unittests_sources/access-check-unittest.o' means the 
weak symbol cannot be overridden at runtime. This was likely caused by 
different translation units being compiled with different visibility 
settings.

ld: warning: direct access in function 
'testing::internal::SuiteApiResolver<testing::internal::(anonymous 
namespace)::FailureTest>::GetTearDownCaseOrSuite(char const*, int)' from 
file 'obj/third_party/googletest/gtest/gtest.o' to global weak symbol 
'testing::Test::TearDownTestCase()' from file 
'obj/test/unittests/unittests_sources/access-check-unittest.o' means the 
weak symbol cannot be overridden at runtime. This was likely caused by 
different translation units being compiled with different visibility 
settings.

ld: fatal warning(s) induced error (-fatal_warnings)

clang: error: linker command failed with exit code 1 (use -v to see 
invocation)

aaa

Traceback (most recent call last):

  File "../../build/toolchain/mac/linker_driver.py", line 307, in <module>

    Main(sys.argv)

  File "../../build/toolchain/mac/linker_driver.py", line 97, in Main

    subprocess.check_call(compiler_driver_args, env=env)

  File 
"/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py",
 
line 190, in check_call

    raise CalledProcessError(retcode, cmd)

subprocess.CalledProcessError: Command 
'['../../third_party/llvm-build/Release+Asserts/bin/clang++', '-B', 
'/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/',
 
'-Wl,-fatal_warnings', '-stdlib=libc++', '-arch', 'x86_64', '-Werror', 
'-nostdlib++', '-isysroot', 
'../../../../../../../../Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.0.sdk',
 
'-mmacosx-version-min=10.10.0', '-Wl,-ObjC', '-Wl,-rpath,@loader_path/.', 
'-Wl,-rpath,@loader_path/../../..', '-o', './unittests', 
'-Wl,-filelist,./unittests.rsp', './libv8_for_testing.dylib', 
'./libv8_libbase.dylib', './libv8_libplatform.dylib', './libicui18n.dylib', 
'./libicuuc.dylib', './libv8_cppgc_shared_for_testing.dylib', 
'./libc++.dylib']' returned non-zero exit status 1

[26/27] LIBTOOL-STATIC obj/libwee8.a

ninja: build stopped: subcommand failed.

Error! - V8 compilation finished with errors.

```

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