mirror of
https://github.com/open-source-parsers/jsoncpp.git
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69098a18b9
If jsoncpp is a subproject (like a git submodule), setting the global cmake variables affect the entire project (changes the structure of the output folders) and these changes prevent it.
216 lines
8.6 KiB
CMake
216 lines
8.6 KiB
CMake
# vim: et ts=4 sts=4 sw=4 tw=0
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# ==== Define cmake build policies that affect compilation and linkage default behaviors
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#
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# Set the JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION string to the newest cmake version
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# policies that provide successful builds. By setting JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION
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# to a value greater than the oldest policies, all policies between
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# JSONCPP_OLDEST_VALIDATED_POLICIES_VERSION and CMAKE_VERSION (used for this build)
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# are set to their NEW behavior, thereby suppressing policy warnings related to policies
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# between the JSONCPP_OLDEST_VALIDATED_POLICIES_VERSION and CMAKE_VERSION.
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#
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# CMake versions greater than the JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION policies will
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# continue to generate policy warnings "CMake Warning (dev)...Policy CMP0XXX is not set:"
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#
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set(JSONCPP_OLDEST_VALIDATED_POLICIES_VERSION "3.8.0")
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set(JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION "3.13.2")
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cmake_minimum_required(VERSION ${JSONCPP_OLDEST_VALIDATED_POLICIES_VERSION})
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if("${CMAKE_VERSION}" VERSION_LESS "${JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION}")
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#Set and use the newest available cmake policies that are validated to work
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set(JSONCPP_CMAKE_POLICY_VERSION "${CMAKE_VERSION}")
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else()
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set(JSONCPP_CMAKE_POLICY_VERSION "${JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION}")
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endif()
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cmake_policy(VERSION ${JSONCPP_CMAKE_POLICY_VERSION})
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if(POLICY CMP0091)
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cmake_policy(SET CMP0091 NEW)
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endif()
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#
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# Now enumerate specific policies newer than JSONCPP_NEWEST_VALIDATED_POLICIES_VERSION
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# that may need to be individually set to NEW/OLD
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#
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foreach(pnew "") # Currently Empty
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if(POLICY ${pnew})
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cmake_policy(SET ${pnew} NEW)
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endif()
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endforeach()
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foreach(pold "") # Currently Empty
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if(POLICY ${pold})
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cmake_policy(SET ${pold} OLD)
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endif()
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endforeach()
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# Build the library with C++11 standard support, independent from other including
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# software which may use a different CXX_STANDARD or CMAKE_CXX_STANDARD.
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set(CMAKE_CXX_STANDARD 11)
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set(CMAKE_CXX_EXTENSIONS OFF)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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# Ensure that CMAKE_BUILD_TYPE has a value specified for single configuration generators.
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if(NOT DEFINED CMAKE_BUILD_TYPE AND NOT DEFINED CMAKE_CONFIGURATION_TYPES)
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set(CMAKE_BUILD_TYPE Release CACHE STRING
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"Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel Coverage.")
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endif()
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set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
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# ---------------------------------------------------------------------------
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# use ccache if found, has to be done before project()
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# ---------------------------------------------------------------------------
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find_program(CCACHE_EXECUTABLE "ccache" HINTS /usr/local/bin /opt/local/bin)
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if(CCACHE_EXECUTABLE)
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message(STATUS "use ccache")
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set(CMAKE_CXX_COMPILER_LAUNCHER "${CCACHE_EXECUTABLE}" CACHE PATH "ccache" FORCE)
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set(CMAKE_C_COMPILER_LAUNCHER "${CCACHE_EXECUTABLE}" CACHE PATH "ccache" FORCE)
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endif()
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project(jsoncpp
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# Note: version must be updated in three places when doing a release. This
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# annoying process ensures that amalgamate, CMake, and meson all report the
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# correct version.
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# 1. ./meson.build
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# 2. ./include/json/version.h
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# 3. ./CMakeLists.txt
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# IMPORTANT: also update the PROJECT_SOVERSION!!
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VERSION 1.9.5 # <major>[.<minor>[.<patch>[.<tweak>]]]
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LANGUAGES CXX)
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message(STATUS "JsonCpp Version: ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}")
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set(PROJECT_SOVERSION 25)
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include(${CMAKE_CURRENT_SOURCE_DIR}/include/PreventInSourceBuilds.cmake)
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include(${CMAKE_CURRENT_SOURCE_DIR}/include/PreventInBuildInstalls.cmake)
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option(JSONCPP_WITH_TESTS "Compile and (for jsoncpp_check) run JsonCpp test executables" ON)
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option(JSONCPP_WITH_POST_BUILD_UNITTEST "Automatically run unit-tests as a post build step" ON)
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option(JSONCPP_WITH_WARNING_AS_ERROR "Force compilation to fail if a warning occurs" OFF)
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option(JSONCPP_WITH_STRICT_ISO "Issue all the warnings demanded by strict ISO C and ISO C++" ON)
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option(JSONCPP_WITH_PKGCONFIG_SUPPORT "Generate and install .pc files" ON)
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option(JSONCPP_WITH_CMAKE_PACKAGE "Generate and install cmake package files" ON)
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option(JSONCPP_WITH_EXAMPLE "Compile JsonCpp example" OFF)
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option(JSONCPP_STATIC_WINDOWS_RUNTIME "Use static (MT/MTd) Windows runtime" OFF)
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option(BUILD_SHARED_LIBS "Build jsoncpp_lib as a shared library." ON)
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option(BUILD_STATIC_LIBS "Build jsoncpp_lib as a static library." ON)
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option(BUILD_OBJECT_LIBS "Build jsoncpp_lib as a object library." ON)
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# Adhere to GNU filesystem layout conventions
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include(GNUInstallDirs)
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if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
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set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib" CACHE PATH "Archive output dir.")
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set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib" CACHE PATH "Library output dir.")
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set(CMAKE_PDB_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin" CACHE PATH "PDB (MSVC debug symbol)output dir.")
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set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin" CACHE PATH "Executable/dll output dir.")
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endif()
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set(JSONCPP_USE_SECURE_MEMORY "0" CACHE STRING "-D...=1 to use memory-wiping allocator for STL")
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configure_file("${PROJECT_SOURCE_DIR}/version.in"
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"${PROJECT_BINARY_DIR}/version"
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NEWLINE_STYLE UNIX)
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macro(use_compilation_warning_as_error)
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if(MSVC)
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# Only enabled in debug because some old versions of VS STL generate
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# warnings when compiled in release configuration.
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add_compile_options($<$<CONFIG:Debug>:/WX>)
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elseif(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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add_compile_options(-Werror)
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if(JSONCPP_WITH_STRICT_ISO)
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add_compile_options(-pedantic-errors)
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endif()
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endif()
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endmacro()
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# Include our configuration header
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include_directories(${jsoncpp_SOURCE_DIR}/include)
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if(MSVC)
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# Only enabled in debug because some old versions of VS STL generate
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# unreachable code warning when compiled in release configuration.
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add_compile_options($<$<CONFIG:Debug>:/W4>)
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if (JSONCPP_STATIC_WINDOWS_RUNTIME)
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set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
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endif()
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endif()
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if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
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# using regular Clang or AppleClang
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add_compile_options(-Wall -Wconversion -Wshadow)
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if(JSONCPP_WITH_WARNING_AS_ERROR)
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add_compile_options(-Werror=conversion -Werror=sign-compare)
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endif()
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elseif(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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# using GCC
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add_compile_options(-Wall -Wconversion -Wshadow -Wextra)
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# not yet ready for -Wsign-conversion
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if(JSONCPP_WITH_STRICT_ISO)
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add_compile_options(-Wpedantic)
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endif()
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if(JSONCPP_WITH_WARNING_AS_ERROR)
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add_compile_options(-Werror=conversion)
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endif()
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elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
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# using Intel compiler
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add_compile_options(-Wall -Wconversion -Wshadow -Wextra)
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if(JSONCPP_WITH_WARNING_AS_ERROR)
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add_compile_options(-Werror=conversion)
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elseif(JSONCPP_WITH_STRICT_ISO)
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add_compile_options(-Wpedantic)
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endif()
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endif()
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if(JSONCPP_WITH_WARNING_AS_ERROR)
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use_compilation_warning_as_error()
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endif()
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if(JSONCPP_WITH_PKGCONFIG_SUPPORT)
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include(JoinPaths)
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join_paths(libdir_for_pc_file "\${exec_prefix}" "${CMAKE_INSTALL_LIBDIR}")
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join_paths(includedir_for_pc_file "\${prefix}" "${CMAKE_INSTALL_INCLUDEDIR}")
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configure_file(
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"pkg-config/jsoncpp.pc.in"
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"pkg-config/jsoncpp.pc"
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@ONLY)
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install(FILES "${CMAKE_CURRENT_BINARY_DIR}/pkg-config/jsoncpp.pc"
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DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
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endif()
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if(JSONCPP_WITH_CMAKE_PACKAGE)
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include(CMakePackageConfigHelpers)
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install(EXPORT jsoncpp
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DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/jsoncpp
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FILE jsoncpp-targets.cmake)
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configure_package_config_file(jsoncppConfig.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/jsoncppConfig.cmake
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INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/jsoncpp)
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write_basic_package_version_file("${CMAKE_CURRENT_BINARY_DIR}/jsoncppConfigVersion.cmake"
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VERSION ${PROJECT_VERSION}
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COMPATIBILITY SameMajorVersion)
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install(FILES
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${CMAKE_CURRENT_BINARY_DIR}/jsoncppConfigVersion.cmake ${CMAKE_CURRENT_BINARY_DIR}/jsoncppConfig.cmake
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${CMAKE_CURRENT_SOURCE_DIR}/jsoncpp-namespaced-targets.cmake
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DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/jsoncpp)
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endif()
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if(JSONCPP_WITH_TESTS)
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enable_testing()
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include(CTest)
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endif()
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# Build the different applications
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add_subdirectory(src)
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#install the includes
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add_subdirectory(include)
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#install the example
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if(JSONCPP_WITH_EXAMPLE)
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add_subdirectory(example)
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endif()
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