# Copyright 2016 Google Inc. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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cmake_minimum_required(VERSION 3.5)
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project(LibProtobufMutator CXX)
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enable_language(C)
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enable_language(CXX)
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option(LIB_PROTO_MUTATOR_DOWNLOAD_PROTOBUF
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"Automatically download working protobuf" OFF)
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option(LIB_PROTO_MUTATOR_WITH_ASAN "Enable address sanitizer" OFF)
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set(LIB_PROTO_MUTATOR_FUZZER_LIBRARIES "" CACHE STRING "Fuzzing engine libs")
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# External dependencies
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set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/external)
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# External dependencies
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include(ProcessorCount)
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include(CheckCCompilerFlag)
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include(CheckCXXCompilerFlag)
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set(THREADS_PREFER_PTHREAD_FLAG ON)
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find_package(Threads)
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find_package(LibLZMA)
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include_directories(${LIBLZMA_INCLUDE_DIRS})
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find_package(ZLIB)
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include_directories(${ZLIB_INCLUDE_DIRS})
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set(CMAKE_CXX_STANDARD 11)
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include_directories(${PROJECT_SOURCE_DIR})
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set(CMAKE_REQUIRED_FLAGS "-fsanitize=address")
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check_cxx_compiler_flag(-fsanitize=address LIB_PROTO_MUTATOR_HAS_SANITIZE_ADDRESS)
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check_cxx_compiler_flag("-fsanitize=address -fsanitize-address-use-after-scope"
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LIB_PROTO_MUTATOR_HAS_SANITIZE_SCOPE)
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unset(CMAKE_REQUIRED_FLAGS)
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set(CMAKE_REQUIRED_FLAGS "-fsanitize-coverage=0")
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check_cxx_compiler_flag(-fsanitize-coverage= LIB_PROTO_MUTATOR_HAS_NO_COVERAGE)
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unset(CMAKE_REQUIRED_FLAGS)
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set(CMAKE_REQUIRED_FLAGS "-fsanitize=fuzzer-no-link")
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check_cxx_compiler_flag(-fsanitize=fuzzer-no-link LIB_PROTO_MUTATOR_HAS_SANITIZE_FUZZER)
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unset(CMAKE_REQUIRED_FLAGS)
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set(CMAKE_REQUIRED_FLAGS "-fno-sanitize=fuzzer")
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check_cxx_compiler_flag(-fno-sanitize=fuzzer LIB_PROTO_MUTATOR_HAS_NO_SANITIZE_FUZZER)
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unset(CMAKE_REQUIRED_FLAGS)
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check_cxx_compiler_flag(-Wstring-conversion LIB_PROTO_MUTATOR_HAS_WSTRING_CONVERSION)
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set(EXTRA_FLAGS "-fno-exceptions -Werror -Wall")
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if (LIB_PROTO_MUTATOR_HAS_WSTRING_CONVERSION)
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set(EXTRA_FLAGS "${EXTRA_FLAGS} -Wstring-conversion")
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endif()
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if (LIB_PROTO_MUTATOR_WITH_ASAN)
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if (LIB_PROTO_MUTATOR_HAS_SANITIZE_ADDRESS)
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set(EXTRA_FLAGS "${EXTRA_FLAGS} -fsanitize=address")
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if (LIB_PROTO_MUTATOR_HAS_SANITIZE_SCOPE)
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set(EXTRA_FLAGS "${EXTRA_FLAGS} -fsanitize-address-use-after-scope")
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endif()
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endif()
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endif()
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# Assume CFLAGS has coverage options if LIB_PROTO_MUTATOR_FUZZER_LIBRARIES was set
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if ("${LIB_PROTO_MUTATOR_FUZZER_LIBRARIES}" STREQUAL "")
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if (LIB_PROTO_MUTATOR_HAS_SANITIZE_FUZZER)
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set(FUZZING_FLAGS "-fsanitize=fuzzer-no-link")
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set(FUZZING_FLAGS_BINARY "-fsanitize=fuzzer")
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endif()
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if (LIB_PROTO_MUTATOR_HAS_SANITIZE_NO_FUZZER)
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set(NO_FUZZING_FLAGS "-fno-sanitize=fuzzer")
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endif()
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endif()
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if (LIB_PROTO_MUTATOR_HAS_NO_COVERAGE)
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set(NO_FUZZING_FLAGS "${NO_FUZZING_FLAGS} -fsanitize-coverage=0")
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endif()
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EXTRA_FLAGS}")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${EXTRA_FLAGS}")
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set(PROTOBUF_CFLAGS "${CMAKE_C_FLAGS} ${NO_FUZZING_FLAGS} -w")
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set(PROTOBUF_CXXFLAGS "${CMAKE_CXX_FLAGS} ${NO_FUZZING_FLAGS} -w")
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if(CMAKE_USE_PTHREADS_INIT)
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set(PROTOBUF_CFLAGS "${PROTOBUF_CFLAGS} -pthread")
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set(PROTOBUF_CXXFLAGS "${PROTOBUF_CXXFLAGS} -pthread")
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endif()
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if (LIB_PROTO_MUTATOR_DOWNLOAD_PROTOBUF)
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include(protobuf)
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else()
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find_package(Protobuf REQUIRED)
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include_directories(${PROTOBUF_INCLUDE_DIRS})
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include_directories(${CMAKE_CURRENT_BINARY_DIR})
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endif()
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enable_testing()
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include(googletest)
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if (NOT LIB_PROTO_MUTATOR_CTEST_JOBS)
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ProcessorCount(LIB_PROTO_MUTATOR_CTEST_JOBS)
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endif()
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add_custom_target(check
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COMMAND ${CMAKE_CTEST_COMMAND} -j${LIB_PROTO_MUTATOR_CTEST_JOBS} --output-on-failure)
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add_subdirectory(src)
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if (NOT "${LIB_PROTO_MUTATOR_FUZZER_LIBRARIES}" STREQUAL "" OR
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NOT "${FUZZING_FLAGS}" STREQUAL "")
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add_subdirectory(examples EXCLUDE_FROM_ALL)
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endif()
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