2017-07-29 17:59:09 +08:00
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cmake_minimum_required(VERSION 3.0.0)
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2015-04-27 04:47:40 +08:00
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2017-07-29 17:59:09 +08:00
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##
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## PROJECT
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## name and version
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##
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2018-02-13 05:59:36 +08:00
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project(nlohmann_json VERSION 3.1.1 LANGUAGES CXX)
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2015-04-27 04:47:40 +08:00
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2017-08-15 02:45:33 +08:00
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##
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## INCLUDE
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##
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##
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include(ExternalProject)
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2017-07-29 17:59:09 +08:00
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##
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## OPTIONS
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##
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2017-12-21 00:54:45 +08:00
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option(JSON_BuildTests "Build the unit tests when BUILD_TESTING is enabled." ON)
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2018-01-13 20:07:03 +08:00
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option(JSON_MultipleHeaders "Use non-amalgamated version of the library." OFF)
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2016-05-08 23:30:24 +08:00
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2017-07-29 17:59:09 +08:00
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##
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## CONFIGURATION
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##
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set(NLOHMANN_JSON_TARGET_NAME ${PROJECT_NAME})
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set(NLOHMANN_JSON_CONFIG_INSTALL_DIR "lib/cmake/${PROJECT_NAME}")
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set(NLOHMANN_JSON_INCLUDE_INSTALL_DIR "include")
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set(NLOHMANN_JSON_TARGETS_EXPORT_NAME "${PROJECT_NAME}Targets")
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set(NLOHMANN_JSON_CMAKE_CONFIG_TEMPLATE "cmake/config.cmake.in")
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set(NLOHMANN_JSON_CMAKE_CONFIG_DIR "${CMAKE_CURRENT_BINARY_DIR}/cmake_config")
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set(NLOHMANN_JSON_CMAKE_VERSION_CONFIG_FILE "${NLOHMANN_JSON_CMAKE_CONFIG_DIR}/${PROJECT_NAME}ConfigVersion.cmake")
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set(NLOHMANN_JSON_CMAKE_PROJECT_CONFIG_FILE "${NLOHMANN_JSON_CMAKE_CONFIG_DIR}/${PROJECT_NAME}Config.cmake")
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2015-04-27 04:47:40 +08:00
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2018-01-13 20:07:03 +08:00
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if (JSON_MultipleHeaders)
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2018-01-29 18:21:11 +08:00
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set(NLOHMANN_JSON_INCLUDE_BUILD_DIR "${PROJECT_SOURCE_DIR}/include/")
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2018-02-10 21:46:39 +08:00
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message(STATUS "Using the multi-header code from ${NLOHMANN_JSON_INCLUDE_BUILD_DIR}")
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2018-01-13 20:07:03 +08:00
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else()
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2018-01-29 18:21:11 +08:00
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set(NLOHMANN_JSON_INCLUDE_BUILD_DIR "${PROJECT_SOURCE_DIR}/single_include/")
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2018-02-10 21:46:39 +08:00
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message(STATUS "Using the single-header code from ${NLOHMANN_JSON_INCLUDE_BUILD_DIR}")
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2018-01-13 20:07:03 +08:00
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endif()
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2017-07-29 17:59:09 +08:00
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##
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## TARGET
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## create target and add include path
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##
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add_library(${NLOHMANN_JSON_TARGET_NAME} INTERFACE)
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2017-02-12 19:46:54 +08:00
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2017-07-29 17:59:09 +08:00
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target_include_directories(
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${NLOHMANN_JSON_TARGET_NAME}
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2017-12-05 18:27:03 +08:00
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INTERFACE
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2018-01-29 18:21:11 +08:00
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$<BUILD_INTERFACE:${NLOHMANN_JSON_INCLUDE_BUILD_DIR}>
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2017-12-05 18:27:03 +08:00
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$<INSTALL_INTERFACE:include>
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2017-07-29 17:59:09 +08:00
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)
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2017-11-26 17:31:33 +08:00
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2017-11-30 20:26:45 +08:00
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## add debug view defintion file for msvc (natvis) [cmake <= 3.2.2 does not support export of source files]
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2017-11-29 06:43:39 +08:00
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if (MSVC AND CMAKE_VERSION VERSION_GREATER "3.2.2")
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2017-11-30 20:26:45 +08:00
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set(NLOHMANN_ADD_NATVIS TRUE)
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set(NLOHMANN_NATVIS_FILE "nlohmann_json.natvis")
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2017-11-29 06:43:39 +08:00
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target_sources(
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${NLOHMANN_JSON_TARGET_NAME}
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INTERFACE
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2017-11-30 20:26:45 +08:00
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$<INSTALL_INTERFACE:${NLOHMANN_NATVIS_FILE}>
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$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/${NLOHMANN_NATVIS_FILE}>
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2017-11-29 06:43:39 +08:00
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)
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endif()
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2017-11-26 17:31:33 +08:00
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2017-07-29 17:59:09 +08:00
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##
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## TESTS
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## create and configure the unit test target
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##
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2017-12-21 00:54:45 +08:00
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include(CTest) #adds option BUILD_TESTING (default ON)
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if(BUILD_TESTING AND JSON_BuildTests)
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2017-07-27 22:50:24 +08:00
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enable_testing()
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2016-05-11 08:25:54 +08:00
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add_subdirectory(test)
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2016-05-08 23:30:24 +08:00
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endif()
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2016-04-25 15:36:05 +08:00
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2017-07-29 17:59:09 +08:00
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##
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## INSTALL
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## install header files, generate and install cmake config files for find_package()
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##
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2016-04-25 16:23:14 +08:00
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include(CMakePackageConfigHelpers)
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2017-07-29 17:59:09 +08:00
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write_basic_package_version_file(
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${NLOHMANN_JSON_CMAKE_VERSION_CONFIG_FILE} COMPATIBILITY SameMajorVersion
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)
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configure_package_config_file(
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${NLOHMANN_JSON_CMAKE_CONFIG_TEMPLATE}
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${NLOHMANN_JSON_CMAKE_PROJECT_CONFIG_FILE}
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INSTALL_DESTINATION ${NLOHMANN_JSON_CONFIG_INSTALL_DIR}
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)
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2018-01-29 18:21:11 +08:00
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2017-07-29 17:59:09 +08:00
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install(
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2018-01-29 18:21:11 +08:00
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DIRECTORY ${NLOHMANN_JSON_INCLUDE_BUILD_DIR}
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DESTINATION ${NLOHMANN_JSON_INCLUDE_INSTALL_DIR}
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2017-07-29 17:59:09 +08:00
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)
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install(
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FILES ${NLOHMANN_JSON_CMAKE_PROJECT_CONFIG_FILE} ${NLOHMANN_JSON_CMAKE_VERSION_CONFIG_FILE}
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DESTINATION ${NLOHMANN_JSON_CONFIG_INSTALL_DIR}
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)
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2017-11-30 20:26:45 +08:00
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if (NLOHMANN_ADD_NATVIS)
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install(
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FILES ${NLOHMANN_NATVIS_FILE}
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DESTINATION .
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)
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endif()
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2017-07-29 17:59:09 +08:00
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install(
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TARGETS ${NLOHMANN_JSON_TARGET_NAME}
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EXPORT ${NLOHMANN_JSON_TARGETS_EXPORT_NAME}
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INCLUDES DESTINATION ${NLOHMANN_JSON_INCLUDE_INSTALL_DIR}
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)
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install(
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EXPORT ${NLOHMANN_JSON_TARGETS_EXPORT_NAME}
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DESTINATION ${NLOHMANN_JSON_CONFIG_INSTALL_DIR}
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2017-11-30 20:37:58 +08:00
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)
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