CMakeLists.txt - external/github.com/open-source-parsers/jsoncpp - Git at Google

 # 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)

 # 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 1.9.4 # <major>[.<minor>[.<patch>[.<tweak>]]]
         LANGUAGES CXX)

 message(STATUS "JsonCpp Version: ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}")
 set(PROJECT_SOVERSION 24)

 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 -Werror=conversion -Werror=sign-compare)
 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 -Werror=conversion)

     if(JSONCPP_WITH_STRICT_ISO AND NOT JSONCPP_WITH_WARNING_AS_ERROR)
         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 ${CMAKE_INSTALL_LIBDIR}/cmake/jsoncpp
         FILE        jsoncppConfig.cmake)
     write_basic_package_version_file("${CMAKE_CURRENT_BINARY_DIR}/jsoncppConfigVersion.cmake"
         VERSION ${PROJECT_VERSION}
         COMPATIBILITY SameMajorVersion)
     install(FILES ${CMAKE_CURRENT_BINARY_DIR}/jsoncppConfigVersion.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()
	# 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)

	# 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 1.9.4 # <major>[.<minor>[.<patch>[.<tweak>]]]
	LANGUAGES CXX)

	message(STATUS "JsonCpp Version: ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}")
	set(PROJECT_SOVERSION 24)

	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 -Werror=conversion -Werror=sign-compare)
	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 -Werror=conversion)

	if(JSONCPP_WITH_STRICT_ISO AND NOT JSONCPP_WITH_WARNING_AS_ERROR)
	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 ${CMAKE_INSTALL_LIBDIR}/cmake/jsoncpp
	FILE jsoncppConfig.cmake)
	write_basic_package_version_file("${CMAKE_CURRENT_BINARY_DIR}/jsoncppConfigVersion.cmake"
	VERSION ${PROJECT_VERSION}
	COMPATIBILITY SameMajorVersion)
	install(FILES ${CMAKE_CURRENT_BINARY_DIR}/jsoncppConfigVersion.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()