cmake_minimum_required(VERSION 3.6) ## ## PROJECT ## name and version ## project(nlohmann_json VERSION 3.5.0 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}" CACHE INTERNAL "") 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}") 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") set(NLOHMANN_JSON_CMAKE_PROJECT_TARGETS_FILE "${NLOHMANN_JSON_CMAKE_CONFIG_DIR}/${PROJECT_NAME}Targets.cmake") if (JSON_MultipleHeaders) set(NLOHMANN_JSON_INCLUDE_BUILD_DIR "${PROJECT_SOURCE_DIR}/include/") message(STATUS "Using the multi-header code from ${NLOHMANN_JSON_INCLUDE_BUILD_DIR}") else() set(NLOHMANN_JSON_INCLUDE_BUILD_DIR "${PROJECT_SOURCE_DIR}/single_include/") message(STATUS "Using the single-header code from ${NLOHMANN_JSON_INCLUDE_BUILD_DIR}") endif() ## ## TARGET ## create target and add include path ## add_library(${NLOHMANN_JSON_TARGET_NAME} INTERFACE) add_library(${PROJECT_NAME}::${NLOHMANN_JSON_TARGET_NAME} ALIAS ${NLOHMANN_JSON_TARGET_NAME}) target_include_directories( ${NLOHMANN_JSON_TARGET_NAME} INTERFACE $ $ ) ## add debug view definition file for msvc (natvis) if (MSVC) set(NLOHMANN_ADD_NATVIS TRUE) set(NLOHMANN_NATVIS_FILE "nlohmann_json.natvis") target_sources( ${NLOHMANN_JSON_TARGET_NAME} INTERFACE $ $ ) 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_file( ${NLOHMANN_JSON_CMAKE_CONFIG_TEMPLATE} ${NLOHMANN_JSON_CMAKE_PROJECT_CONFIG_FILE} @ONLY ) #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() export( TARGETS ${NLOHMANN_JSON_TARGET_NAME} NAMESPACE ${PROJECT_NAME}:: FILE ${NLOHMANN_JSON_CMAKE_PROJECT_TARGETS_FILE} ) #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} #NAMESPACE ${PROJECT_NAME}:: #DESTINATION ${NLOHMANN_JSON_CONFIG_INSTALL_DIR} #)