set(CMAKE_LEGACY_CYGWIN_WIN32 0)
cmake_minimum_required(VERSION 2.8.5)
project(cJSON C)
include(GNUInstallDirs)
set(PROJECT_VERSION_MAJOR 1)
set(PROJECT_VERSION_MINOR 7)
set(PROJECT_VERSION_PATCH 7)
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} ${supported_compiler_flags}")
option(BUILD_SHARED_LIBS "Build shared libraries" ON)
option(ENABLE_TARGET_EXPORT "Enable exporting of CMake targets. Disable when it causes problems!" ON)
#cJSON
set(CJSON_LIB cjson)
file(GLOB HEADERS cJSON.h)
set(SOURCES cJSON.c)
option(BUILD_SHARED_AND_STATIC_LIBS "Build both shared and static libraries" Off)
option(CJSON_OVERRIDE_BUILD_SHARED_LIBS "Override BUILD_SHARED_LIBS with CJSON_BUILD_SHARED_LIBS" OFF)
option(CJSON_BUILD_SHARED_LIBS "Overrides BUILD_SHARED_LIBS if CJSON_OVERRIDE_BUILD_SHARED_LIBS is enabled" ON)
if ((CJSON_OVERRIDE_BUILD_SHARED_LIBS AND CJSON_BUILD_SHARED_LIBS) OR ((NOT CJSON_OVERRIDE_BUILD_SHARED_LIBS) AND BUILD_SHARED_LIBS))
set(CJSON_LIBRARY_TYPE SHARED)
else()
set(CJSON_LIBRARY_TYPE STATIC)
endif()
if (NOT BUILD_SHARED_AND_STATIC_LIBS)
add_library("${CJSON_LIB}" "${CJSON_LIBRARY_TYPE}" "${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_FULL_INCLUDEDIR}/cjson")
install (FILES "${CMAKE_CURRENT_BINARY_DIR}/libcjson.pc" DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}/pkgconfig")
install(TARGETS "${CJSON_LIB}" DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}" EXPORT "${CJSON_LIB}")
if (BUILD_SHARED_AND_STATIC_LIBS)
install(TARGETS "${CJSON_LIB}-static" DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}")
endif()
if(ENABLE_TARGET_EXPORT)
# export library information for CMake projects
install(EXPORT "${CJSON_LIB}" DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}/cmake/cJSON")
endif()
set_target_properties("${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("${CJSON_UTILS_LIB}" "${CJSON_LIBRARY_TYPE}" "${HEADERS_UTILS}" "${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 "${CMAKE_INSTALL_FULL_LIBDIR}" EXPORT "${CJSON_UTILS_LIB}")
if (BUILD_SHARED_AND_STATIC_LIBS)
install(TARGETS "${CJSON_UTILS_LIB}-static" DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}")
endif()
install(FILES cJSON_Utils.h DESTINATION "${CMAKE_INSTALL_FULL_INCLUDEDIR}/cjson")
install (FILES "${CMAKE_CURRENT_BINARY_DIR}/libcjson_utils.pc" DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}/pkgconfig")
if(ENABLE_TARGET_EXPORT)
# export library information for CMake projects
install(EXPORT "${CJSON_UTILS_LIB}" DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}/cmake/cJSON")
endif()
set_target_properties("${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_FULL_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()
# Enable the use of locales
option(ENABLE_LOCALES "Enable the use of locales" ON)
if(ENABLE_LOCALES)
add_definitions(-DENABLE_LOCALES)
endif()
add_subdirectory(tests)
add_subdirectory(fuzzing)