| cmake_minimum_required(VERSION 3.0.0) |
| |
| ## |
| ## PROJECT |
| ## name and version |
| ## |
| project(nlohmann_json VERSION 3.1.0 LANGUAGES CXX) |
| |
| ## |
| ## INCLUDE |
| ## |
| ## |
| include(ExternalProject) |
| |
| ## |
| ## OPTIONS |
| ## |
| option(JSON_BuildTests "Build the unit tests when BUILD_TESTING is enabled." ON) |
| option(JSON_MultipleHeaders "Use non-amalgamated version of the library." OFF) |
| |
| ## |
| ## CONFIGURATION |
| ## |
| set(NLOHMANN_JSON_TARGET_NAME ${PROJECT_NAME}) |
| set(NLOHMANN_JSON_CONFIG_INSTALL_DIR "lib/cmake/${PROJECT_NAME}") |
| set(NLOHMANN_JSON_INCLUDE_INSTALL_DIR "include") |
| set(NLOHMANN_JSON_TARGETS_EXPORT_NAME "${PROJECT_NAME}Targets") |
| set(NLOHMANN_JSON_CMAKE_CONFIG_TEMPLATE "cmake/config.cmake.in") |
| set(NLOHMANN_JSON_CMAKE_CONFIG_DIR "${CMAKE_CURRENT_BINARY_DIR}/cmake_config") |
| set(NLOHMANN_JSON_CMAKE_VERSION_CONFIG_FILE "${NLOHMANN_JSON_CMAKE_CONFIG_DIR}/${PROJECT_NAME}ConfigVersion.cmake") |
| set(NLOHMANN_JSON_CMAKE_PROJECT_CONFIG_FILE "${NLOHMANN_JSON_CMAKE_CONFIG_DIR}/${PROJECT_NAME}Config.cmake") |
| |
| if (JSON_MultipleHeaders) |
| set(NLOHMANN_JSON_INCLUDE_BUILD_DIR "${PROJECT_SOURCE_DIR}/include/") |
| else() |
| set(NLOHMANN_JSON_INCLUDE_BUILD_DIR "${PROJECT_SOURCE_DIR}/single_include/") |
| endif() |
| |
| ## |
| ## TARGET |
| ## create target and add include path |
| ## |
| add_library(${NLOHMANN_JSON_TARGET_NAME} INTERFACE) |
| |
| target_include_directories( |
| ${NLOHMANN_JSON_TARGET_NAME} |
| INTERFACE |
| $<BUILD_INTERFACE:${NLOHMANN_JSON_INCLUDE_BUILD_DIR}> |
| $<INSTALL_INTERFACE:include> |
| ) |
| |
| ## add debug view defintion file for msvc (natvis) [cmake <= 3.2.2 does not support export of source files] |
| if (MSVC AND CMAKE_VERSION VERSION_GREATER "3.2.2") |
| set(NLOHMANN_ADD_NATVIS TRUE) |
| set(NLOHMANN_NATVIS_FILE "nlohmann_json.natvis") |
| target_sources( |
| ${NLOHMANN_JSON_TARGET_NAME} |
| INTERFACE |
| $<INSTALL_INTERFACE:${NLOHMANN_NATVIS_FILE}> |
| $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/${NLOHMANN_NATVIS_FILE}> |
| ) |
| endif() |
| |
| ## |
| ## TESTS |
| ## create and configure the unit test target |
| ## |
| include(CTest) #adds option BUILD_TESTING (default ON) |
| |
| if(BUILD_TESTING AND JSON_BuildTests) |
| enable_testing() |
| add_subdirectory(test) |
| endif() |
| |
| ## |
| ## INSTALL |
| ## install header files, generate and install cmake config files for find_package() |
| ## |
| include(CMakePackageConfigHelpers) |
| write_basic_package_version_file( |
| ${NLOHMANN_JSON_CMAKE_VERSION_CONFIG_FILE} COMPATIBILITY SameMajorVersion |
| ) |
| configure_package_config_file( |
| ${NLOHMANN_JSON_CMAKE_CONFIG_TEMPLATE} |
| ${NLOHMANN_JSON_CMAKE_PROJECT_CONFIG_FILE} |
| INSTALL_DESTINATION ${NLOHMANN_JSON_CONFIG_INSTALL_DIR} |
| ) |
| |
| install( |
| DIRECTORY ${NLOHMANN_JSON_INCLUDE_BUILD_DIR} |
| DESTINATION ${NLOHMANN_JSON_INCLUDE_INSTALL_DIR} |
| ) |
| install( |
| FILES ${NLOHMANN_JSON_CMAKE_PROJECT_CONFIG_FILE} ${NLOHMANN_JSON_CMAKE_VERSION_CONFIG_FILE} |
| DESTINATION ${NLOHMANN_JSON_CONFIG_INSTALL_DIR} |
| ) |
| if (NLOHMANN_ADD_NATVIS) |
| install( |
| FILES ${NLOHMANN_NATVIS_FILE} |
| DESTINATION . |
| ) |
| endif() |
| install( |
| TARGETS ${NLOHMANN_JSON_TARGET_NAME} |
| EXPORT ${NLOHMANN_JSON_TARGETS_EXPORT_NAME} |
| INCLUDES DESTINATION ${NLOHMANN_JSON_INCLUDE_INSTALL_DIR} |
| ) |
| install( |
| EXPORT ${NLOHMANN_JSON_TARGETS_EXPORT_NAME} |
| DESTINATION ${NLOHMANN_JSON_CONFIG_INSTALL_DIR} |
| ) |