set(CMAKE_LEGACY_CYGWIN_WIN32 0) cmake_minimum_required(VERSION 2.8.5) include(GNUInstallDirs) project(cJSON C) set(PROJECT_VERSION_MAJOR 1) set(PROJECT_VERSION_MINOR 5) set(PROJECT_VERSION_PATCH 6) set(CJSON_VERSION_SO 1) set(CJSON_UTILS_VERSION_SO 1) set(PROJECT_VERSION "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}") set(custom_compiler_flags) include(CheckCCompilerFlag) option(ENABLE_CUSTOM_COMPILER_FLAGS "Enables custom compiler flags" ON) if (ENABLE_CUSTOM_COMPILER_FLAGS) if (("${CMAKE_C_COMPILER_ID}" STREQUAL "Clang") OR ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU")) list(APPEND custom_compiler_flags -std=c89 -pedantic -Wall -Wextra -Werror -Wstrict-prototypes -Wwrite-strings -Wshadow -Winit-self -Wcast-align -Wformat=2 -Wmissing-prototypes -Wstrict-overflow=2 -Wcast-qual -Wundef -Wswitch-default -Wconversion -Wc++-compat -fstack-protector-strong -Wcomma -Wdouble-promotion -Wparentheses -Wformat-overflow -Wunused-macros -Wmissing-variable-declarations -Wused-but-marked-unused -Wswitch-enum ) elseif("${CMAKE_C_COMPILER_ID}" STREQUAL "MSVC") list(APPEND custom_compiler_flags /GS /Za /sdl /W4 ) endif() endif() option(ENABLE_SANITIZERS "Enables AddressSanitizer and UndefinedBehaviorSanitizer." OFF) if (ENABLE_SANITIZERS) list(APPEND custom_compiler_flags -fno-omit-frame-pointer -fsanitize=address -fsanitize=undefined -fsanitize=float-divide-by-zero -fsanitize=float-cast-overflow -fsanitize-address-use-after-scope -fsanitize=integer -01 -fno-sanitize-recover ) endif() option(ENABLE_SAFE_STACK "Enables the SafeStack instrumentation pass by the Code Pointer Integrity Project" OFF) if (ENABLE_SAFE_STACK) if (ENABLE_SANITIZERS) message(FATAL_ERROR "ENABLE_SAFE_STACK cannot be used in combination with ENABLE_SANITIZERS") endif() list(APPEND custom_compiler_flags -fsanitize=safe-stack ) endif() option(ENABLE_PUBLIC_SYMBOLS "Export library symbols." On) if (ENABLE_PUBLIC_SYMBOLS) list(APPEND custom_compiler_flags -fvisibility=hidden) add_definitions(-DCJSON_EXPORT_SYMBOLS -DCJSON_API_VISIBILITY) endif() option(ENABLE_HIDDEN_SYMBOLS "Hide library symbols." Off) if (ENABLE_HIDDEN_SYMBOLS) add_definitions(-DCJSON_HIDE_SYMBOLS -UCJSON_API_VISIBILITY) endif() # apply custom compiler flags foreach(compiler_flag ${custom_compiler_flags}) #remove problematic characters string(REGEX REPLACE "[^a-zA-Z0-9]" "" current_variable ${compiler_flag}) CHECK_C_COMPILER_FLAG(${compiler_flag} "FLAG_SUPPORTED_${current_variable}") if (FLAG_SUPPORTED_${current_variable}) list(APPEND supported_compiler_flags) set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${compiler_flag}") endif() endforeach() set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${supported_compiler_flags}") #variables for pkg-config set(prefix "${CMAKE_INSTALL_PREFIX}") set(libdir "${CMAKE_INSTALL_LIBDIR}") set(version "${PROJECT_VERSION}") set(includedir "${CMAKE_INSTALL_INCLUDEDIR}") option(BUILD_SHARED_LIBS "Build shared libraries" ON) option(ENABLE_TARGET_EXPORT "Enable exporting of CMake targets. Disable when it causes problems!" ON) #cJSON set(CJSON_LIB cjson) file(GLOB HEADERS cJSON.h) set(SOURCES cJSON.c) option(BUILD_SHARED_AND_STATIC_LIBS "Build both shared and static libraries" Off) if (NOT BUILD_SHARED_AND_STATIC_LIBS) add_library("${CJSON_LIB}" "${HEADERS}" "${SOURCES}") else() # See https://cmake.org/Wiki/CMake_FAQ#How_do_I_make_my_shared_and_static_libraries_have_the_same_root_name.2C_but_different_suffixes.3F add_library("${CJSON_LIB}" SHARED "${HEADERS}" "${SOURCES}") add_library("${CJSON_LIB}-static" STATIC "${HEADERS}" "${SOURCES}") set_target_properties("${CJSON_LIB}-static" PROPERTIES OUTPUT_NAME "${CJSON_LIB}") set_target_properties("${CJSON_LIB}-static" PROPERTIES PREFIX "lib") endif() if (NOT WIN32) target_link_libraries("${CJSON_LIB}" m) endif() configure_file("${CMAKE_CURRENT_SOURCE_DIR}/library_config/libcjson.pc.in" "${CMAKE_CURRENT_BINARY_DIR}/libcjson.pc" @ONLY) install(FILES cJSON.h DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/cjson") install (FILES "${CMAKE_CURRENT_BINARY_DIR}/libcjson.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig") install(TARGETS "${CJSON_LIB}" DESTINATION "${CMAKE_INSTALL_LIBDIR}" EXPORT "${CJSON_LIB}") if (BUILD_SHARED_AND_STATIC_LIBS) install(TARGETS "${CJSON_LIB}-static" DESTINATION "${CMAKE_INSTALL_LIBDIR}") endif() if(ENABLE_TARGET_EXPORT) # export library information for CMake projects install(EXPORT "${CJSON_LIB}" DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/cJSON") endif() set_target_properties("${CJSON_LIB}" PROPERTIES SOVERSION "${CJSON_VERSION_SO}" VERSION "${PROJECT_VERSION}") #cJSON_Utils option(ENABLE_CJSON_UTILS "Enable building the cJSON_Utils library." OFF) if(ENABLE_CJSON_UTILS) set(CJSON_UTILS_LIB cjson_utils) file(GLOB HEADERS_UTILS cJSON_Utils.h) set(SOURCES_UTILS cJSON_Utils.c) if (NOT BUILD_SHARED_AND_STATIC_LIBS) add_library("${CJSON_UTILS_LIB}" "${HEADERS_UTILS}" "${SOURCES_UTILS}") target_link_libraries("${CJSON_UTILS_LIB}" "${CJSON_LIB}") else() add_library("${CJSON_UTILS_LIB}" SHARED "${HEADERS_UTILS}" "${SOURCES_UTILS}") target_link_libraries("${CJSON_UTILS_LIB}" "${CJSON_LIB}") add_library("${CJSON_UTILS_LIB}-static" STATIC "${HEADERS_UTILS}" "${SOURCES_UTILS}") target_link_libraries("${CJSON_UTILS_LIB}-static" "${CJSON_LIB}-static") set_target_properties("${CJSON_UTILS_LIB}-static" PROPERTIES OUTPUT_NAME "${CJSON_UTILS_LIB}") set_target_properties("${CJSON_UTILS_LIB}-static" PROPERTIES PREFIX "lib") endif() configure_file("${CMAKE_CURRENT_SOURCE_DIR}/library_config/libcjson_utils.pc.in" "${CMAKE_CURRENT_BINARY_DIR}/libcjson_utils.pc" @ONLY) install(TARGETS "${CJSON_UTILS_LIB}" DESTINATION "${CMAKE_INSTALL_LIBDIR}" EXPORT "${CJSON_UTILS_LIB}") if (BUILD_SHARED_AND_STATIC_LIBS) install(TARGETS "${CJSON_UTILS_LIB}-static" DESTINATION "${CMAKE_INSTALL_LIBDIR}") endif() install(FILES cJSON_Utils.h DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/cjson") install (FILES "${CMAKE_CURRENT_BINARY_DIR}/libcjson_utils.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig") if(ENABLE_TARGET_EXPORT) # export library information for CMake projects install(EXPORT "${CJSON_UTILS_LIB}" DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/cJSON") endif() set_target_properties("${CJSON_UTILS_LIB}" PROPERTIES SOVERSION "${CJSON_UTILS_VERSION_SO}" VERSION "${PROJECT_VERSION}") endif() # create the other package config files configure_file( "${CMAKE_CURRENT_SOURCE_DIR}/library_config/cJSONConfig.cmake.in" ${PROJECT_BINARY_DIR}/cJSONConfig.cmake @ONLY) configure_file( "${CMAKE_CURRENT_SOURCE_DIR}/library_config/cJSONConfigVersion.cmake.in" ${PROJECT_BINARY_DIR}/cJSONConfigVersion.cmake @ONLY) # Install package config files install(FILES ${PROJECT_BINARY_DIR}/cJSONConfig.cmake ${PROJECT_BINARY_DIR}/cJSONConfigVersion.cmake DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/cJSON") option(ENABLE_CJSON_TEST "Enable building cJSON test" ON) if(ENABLE_CJSON_TEST) enable_testing() set(TEST_CJSON cJSON_test) add_executable("${TEST_CJSON}" test.c) target_link_libraries("${TEST_CJSON}" "${CJSON_LIB}") add_test(NAME ${TEST_CJSON} COMMAND "${CMAKE_CURRENT_BINARY_DIR}/${TEST_CJSON}") # Disable -fsanitize=float-divide-by-zero for cJSON_test if (FLAG_SUPPORTED_fsanitizefloatdividebyzero) if ("${CMAKE_VERSION}" VERSION_LESS "2.8.12") set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fno-sanitize=float-divide-by-zero") else() target_compile_options(${TEST_CJSON} PRIVATE "-fno-sanitize=float-divide-by-zero") endif() endif() #"check" target that automatically builds everything and runs the tests add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND} --output-on-failure DEPENDS ${TEST_CJSON}) endif() add_subdirectory(tests) add_subdirectory(fuzzing)