cmake_minimum_required(VERSION 3.0) # define the project project(nlohmann_json VERSION 2.0.0 LANGUAGES CXX) enable_testing() option(BuildTests "Build the unit tests" ON) # define project variables set(JSON_TARGET_NAME ${PROJECT_NAME}) set(JSON_PACKAGE_NAME ${JSON_TARGET_NAME}) set(JSON_TARGETS_FILENAME "${JSON_PACKAGE_NAME}Targets.cmake") set(JSON_CONFIG_FILENAME "${JSON_PACKAGE_NAME}Config.cmake") set(JSON_CONFIGVERSION_FILENAME "${JSON_PACKAGE_NAME}ConfigVersion.cmake") set(JSON_CONFIG_DESTINATION "cmake") set(JSON_INCLUDE_DESTINATION "include/nlohmann") # create and configure the library target add_library(${JSON_TARGET_NAME} INTERFACE) target_include_directories(${JSON_TARGET_NAME} INTERFACE $ $) # create and configure the unit test target if (BuildTests) add_subdirectory(test) endif() # generate a config and config version file for the package include(CMakePackageConfigHelpers) configure_package_config_file("cmake/config.cmake.in" "${CMAKE_CURRENT_BINARY_DIR}/${JSON_CONFIG_FILENAME}" INSTALL_DESTINATION ${JSON_CONFIG_DESTINATION}) write_basic_package_version_file("${CMAKE_CURRENT_BINARY_DIR}/${JSON_CONFIGVERSION_FILENAME}" VERSION ${PROJECT_VERSION} COMPATIBILITY SameMajorVersion) # export the library target and store build directory in package registry export(TARGETS ${JSON_TARGET_NAME} FILE "${CMAKE_CURRENT_BINARY_DIR}/${JSON_TARGETS_FILENAME}") export(PACKAGE ${JSON_PACKAGE_NAME}) # install library target and config files install(TARGETS ${JSON_TARGET_NAME} EXPORT ${JSON_PACKAGE_NAME}) install(FILES "src/json.hpp" DESTINATION ${JSON_INCLUDE_DESTINATION}) install(EXPORT ${JSON_PACKAGE_NAME} FILE ${JSON_TARGETS_FILENAME} DESTINATION ${JSON_CONFIG_DESTINATION}) install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${JSON_CONFIG_FILENAME}" "${CMAKE_CURRENT_BINARY_DIR}/${JSON_CONFIGVERSION_FILENAME}" DESTINATION ${JSON_CONFIG_DESTINATION})