if( LLVM_USE_SANITIZE_COVERAGE )
  set(LLVM_LINK_COMPONENTS ${LLVM_TARGETS_TO_BUILD})
  set(CXX_FLAGS_NOFUZZ ${CMAKE_CXX_FLAGS})
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=fuzzer")

  if(CLANG_ENABLE_PROTO_FUZZER)
    # Create protobuf .h and .cc files, and put them in a library for use by
    # clang-proto-fuzzer components.
    find_package(Protobuf REQUIRED)
    add_definitions(-DGOOGLE_PROTOBUF_NO_RTTI)
    include_directories(${PROTOBUF_INCLUDE_DIRS})
    include_directories(${CMAKE_CURRENT_BINARY_DIR})
    protobuf_generate_cpp(PROTO_SRCS PROTO_HDRS cxx_proto.proto)
    # Hack to bypass LLVM's cmake sources check and allow multiple libraries and
    # executables from this directory.
    set(LLVM_OPTIONAL_SOURCES
      ClangFuzzer.cpp
      ExampleClangProtoFuzzer.cpp
      ${PROTO_SRCS}
      )
    add_clang_library(clangCXXProto
      ${PROTO_SRCS}
      ${PROTO_HDRS}

      LINK_LIBS
      ${PROTOBUF_LIBRARIES}
      )

    # Build and include libprotobuf-mutator
    include(ProtobufMutator)
    include_directories(${ProtobufMutator_INCLUDE_DIRS})

    # Build the protobuf->C++ translation library and driver.
    add_clang_subdirectory(proto-to-cxx)

    # Build the protobuf fuzzer
    add_clang_executable(clang-proto-fuzzer ExampleClangProtoFuzzer.cpp)
    target_link_libraries(clang-proto-fuzzer
      ${ProtobufMutator_LIBRARIES}
      clangCXXProto
      clangHandleCXX
      clangProtoToCXX
      )
  else()
    # Hack to bypass LLVM's cmake sources check and allow multiple libraries and
    # executables from this directory.
    set(LLVM_OPTIONAL_SOURCES ClangFuzzer.cpp ExampleClangProtoFuzzer.cpp)
  endif()

  add_clang_subdirectory(handle-cxx)

  add_clang_executable(clang-fuzzer
    EXCLUDE_FROM_ALL
    ClangFuzzer.cpp
    )

  target_link_libraries(clang-fuzzer
    clangHandleCXX
    )
endif()