CMakeLists.txt
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# vim: et ts=4 sts=4 sw=4 tw=0
# ==== Define cmake build policies that affect compilation and linkage default behaviors
#
# Set the JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION string to the newest cmake version
# policies that provide successful builds. By setting JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION
# to a value greater than the oldest policies, all policies between
# JSONCPP_OLDEST_VALIDATED_POLICIES_VERSION and CMAKE_VERSION (used for this build)
# are set to their NEW behaivor, thereby suppressing policy warnings related to policies
# between the JSONCPP_OLDEST_VALIDATED_POLICIES_VERSION and CMAKE_VERSION.
#
# CMake versions greater than the JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION policies will
# continue to generate policy warnings "CMake Warning (dev)...Policy CMP0XXX is not set:"
#
set(JSONCPP_OLDEST_VALIDATED_POLICIES_VERSION "3.8.0")
set(JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION "3.13.2")
cmake_minimum_required(VERSION ${JSONCPP_OLDEST_VALIDATED_POLICIES_VERSION})
if("${CMAKE_VERSION}" VERSION_LESS "${JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION}")
#Set and use the newest available cmake policies that are validated to work
set(JSONCPP_CMAKE_POLICY_VERSION "${CMAKE_VERSION}")
else()
set(JSONCPP_CMAKE_POLICY_VERSION "${JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION}")
endif()
cmake_policy(VERSION ${JSONCPP_CMAKE_POLICY_VERSION})
if(POLICY CMP0091)
cmake_policy(SET CMP0091 NEW)
endif()
#
# Now enumerate specific policies newer than JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION
# that may need to be individually set to NEW/OLD
#
foreach(pnew "") # Currently Empty
if(POLICY ${pnew})
cmake_policy(SET ${pnew} NEW)
endif()
endforeach()
foreach(pold "") # Currently Empty
if(POLICY ${pold})
cmake_policy(SET ${pold} OLD)
endif()
endforeach()
# Build the library with C++11 standard support, independent from other including
# software which may use a different CXX_STANDARD or CMAKE_CXX_STANDARD.
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
add_definitions(-D_GLIBCXX_USE_CXX11_ABI=0)
# Ensure that CMAKE_BUILD_TYPE has a value specified for single configuration generators.
if(NOT DEFINED CMAKE_BUILD_TYPE AND NOT DEFINED CMAKE_CONFIGURATION_TYPES)
set(CMAKE_BUILD_TYPE Release CACHE STRING
"Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel Coverage.")
endif()
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
# ---------------------------------------------------------------------------
# use ccache if found, has to be done before project()
# ---------------------------------------------------------------------------
find_program(CCACHE_EXECUTABLE "ccache" HINTS /usr/local/bin /opt/local/bin)
if(CCACHE_EXECUTABLE)
message(STATUS "use ccache")
set(CMAKE_CXX_COMPILER_LAUNCHER "${CCACHE_EXECUTABLE}" CACHE PATH "ccache" FORCE)
set(CMAKE_C_COMPILER_LAUNCHER "${CCACHE_EXECUTABLE}" CACHE PATH "ccache" FORCE)
endif()
project(jsoncpp
# Note: version must be updated in three places when doing a release. This
# annoying process ensures that amalgamate, CMake, and meson all report the
# correct version.
# 1. ./meson.build
# 2. ./include/json/version.h
# 3. ./CMakeLists.txt
# IMPORTANT: also update the PROJECT_SOVERSION!!
VERSION 1.9.5 # <major>[.<minor>[.<patch>[.<tweak>]]]
LANGUAGES CXX)
message(STATUS "JsonCpp Version: ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}")
set(PROJECT_SOVERSION 25)
include(${CMAKE_CURRENT_SOURCE_DIR}/include/PreventInSourceBuilds.cmake)
include(${CMAKE_CURRENT_SOURCE_DIR}/include/PreventInBuildInstalls.cmake)
option(JSONCPP_WITH_TESTS "Compile and (for jsoncpp_check) run JsonCpp test executables" ON)
option(JSONCPP_WITH_POST_BUILD_UNITTEST "Automatically run unit-tests as a post build step" ON)
option(JSONCPP_WITH_WARNING_AS_ERROR "Force compilation to fail if a warning occurs" OFF)
option(JSONCPP_WITH_STRICT_ISO "Issue all the warnings demanded by strict ISO C and ISO C++" ON)
option(JSONCPP_WITH_PKGCONFIG_SUPPORT "Generate and install .pc files" ON)
option(JSONCPP_WITH_CMAKE_PACKAGE "Generate and install cmake package files" ON)
option(JSONCPP_WITH_EXAMPLE "Compile JsonCpp example" OFF)
option(JSONCPP_STATIC_WINDOWS_RUNTIME "Use static (MT/MTd) Windows runtime" OFF)
option(BUILD_SHARED_LIBS "Build jsoncpp_lib as a shared library." ON)
option(BUILD_STATIC_LIBS "Build jsoncpp_lib as a static library." ON)
option(BUILD_OBJECT_LIBS "Build jsoncpp_lib as a object library." ON)
# Adhere to GNU filesystem layout conventions
include(GNUInstallDirs)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib" CACHE PATH "Archive output dir.")
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib" CACHE PATH "Library output dir.")
set(CMAKE_PDB_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin" CACHE PATH "PDB (MSVC debug symbol)output dir.")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin" CACHE PATH "Executable/dll output dir.")
set(JSONCPP_USE_SECURE_MEMORY "0" CACHE STRING "-D...=1 to use memory-wiping allocator for STL")
configure_file("${PROJECT_SOURCE_DIR}/version.in"
"${PROJECT_BINARY_DIR}/version"
NEWLINE_STYLE UNIX)
macro(use_compilation_warning_as_error)
if(MSVC)
# Only enabled in debug because some old versions of VS STL generate
# warnings when compiled in release configuration.
add_compile_options($<$<CONFIG:Debug>:/WX>)
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
add_compile_options(-Werror)
if(JSONCPP_WITH_STRICT_ISO)
add_compile_options(-pedantic-errors)
endif()
endif()
endmacro()
# Include our configuration header
include_directories(${jsoncpp_SOURCE_DIR}/include)
if(MSVC)
# Only enabled in debug because some old versions of VS STL generate
# unreachable code warning when compiled in release configuration.
add_compile_options($<$<CONFIG:Debug>:/W4>)
if (JSONCPP_STATIC_WINDOWS_RUNTIME)
set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
endif()
endif()
if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
# using regular Clang or AppleClang
add_compile_options(-Wall -Wconversion -Wshadow)
if(JSONCPP_WITH_WARNING_AS_ERROR)
add_compile_options(-Werror=conversion -Werror=sign-compare)
endif()
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
# using GCC
add_compile_options(-Wall -Wconversion -Wshadow -Wextra)
# not yet ready for -Wsign-conversion
if(JSONCPP_WITH_STRICT_ISO)
add_compile_options(-Wpedantic)
endif()
if(JSONCPP_WITH_WARNING_AS_ERROR)
add_compile_options(-Werror=conversion)
endif()
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
# using Intel compiler
add_compile_options(-Wall -Wconversion -Wshadow -Wextra)
if(JSONCPP_WITH_WARNING_AS_ERROR)
add_compile_options(-Werror=conversion)
elseif(JSONCPP_WITH_STRICT_ISO)
add_compile_options(-Wpedantic)
endif()
endif()
if(JSONCPP_WITH_WARNING_AS_ERROR)
use_compilation_warning_as_error()
endif()
if(JSONCPP_WITH_PKGCONFIG_SUPPORT)
include(JoinPaths)
join_paths(libdir_for_pc_file "\${exec_prefix}" "${CMAKE_INSTALL_LIBDIR}")
join_paths(includedir_for_pc_file "\${prefix}" "${CMAKE_INSTALL_INCLUDEDIR}")
configure_file(
"pkg-config/jsoncpp.pc.in"
"pkg-config/jsoncpp.pc"
@ONLY)
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/pkg-config/jsoncpp.pc"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
endif()
if(JSONCPP_WITH_CMAKE_PACKAGE)
include(CMakePackageConfigHelpers)
install(EXPORT jsoncpp
DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/jsoncpp
FILE jsoncpp-targets.cmake)
configure_package_config_file(jsoncppConfig.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/jsoncppConfig.cmake
INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/jsoncpp)
write_basic_package_version_file("${CMAKE_CURRENT_BINARY_DIR}/jsoncppConfigVersion.cmake"
VERSION ${PROJECT_VERSION}
COMPATIBILITY SameMajorVersion)
install(FILES
${CMAKE_CURRENT_BINARY_DIR}/jsoncppConfigVersion.cmake ${CMAKE_CURRENT_BINARY_DIR}/jsoncppConfig.cmake
${CMAKE_CURRENT_SOURCE_DIR}/jsoncpp-namespaced-targets.cmake
DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/jsoncpp)
endif()
if(JSONCPP_WITH_TESTS)
enable_testing()
include(CTest)
endif()
# Build the different applications
add_subdirectory(src)
#install the includes
add_subdirectory(include)
#install the example
if(JSONCPP_WITH_EXAMPLE)
add_subdirectory(example)
endif()