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58 lines
2.1 KiB
CMake
58 lines
2.1 KiB
CMake
cmake_minimum_required(VERSION 3.0)
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# define the project
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project(nlohmann_json VERSION 2.1.1 LANGUAGES CXX)
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enable_testing()
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option(BuildTests "Build the unit tests" ON)
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# define project variables
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set(JSON_TARGET_NAME ${PROJECT_NAME})
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set(JSON_PACKAGE_NAME ${JSON_TARGET_NAME})
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set(JSON_TARGETS_FILENAME "${JSON_PACKAGE_NAME}Targets.cmake")
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set(JSON_CONFIG_FILENAME "${JSON_PACKAGE_NAME}Config.cmake")
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set(JSON_CONFIGVERSION_FILENAME "${JSON_PACKAGE_NAME}ConfigVersion.cmake")
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set(JSON_CONFIG_DESTINATION "cmake")
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set(JSON_INCLUDE_DESTINATION "include/nlohmann")
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set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
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# create and configure the library target
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add_library(${JSON_TARGET_NAME} INTERFACE)
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target_include_directories(${JSON_TARGET_NAME} INTERFACE
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$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>
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$<INSTALL_INTERFACE:${JSON_INCLUDE_DESTINATION}>)
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# create and configure the unit test target
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if(BuildTests)
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add_subdirectory(test)
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endif()
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# generate a config and config version file for the package
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include(CMakePackageConfigHelpers)
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configure_package_config_file("cmake/config.cmake.in"
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"${CMAKE_CURRENT_BINARY_DIR}/${JSON_CONFIG_FILENAME}"
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INSTALL_DESTINATION ${JSON_CONFIG_DESTINATION}
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PATH_VARS JSON_INCLUDE_DESTINATION)
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write_basic_package_version_file("${CMAKE_CURRENT_BINARY_DIR}/${JSON_CONFIGVERSION_FILENAME}"
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VERSION ${PROJECT_VERSION}
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COMPATIBILITY SameMajorVersion)
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# export the library target and store build directory in package registry
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export(TARGETS ${JSON_TARGET_NAME}
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FILE "${CMAKE_CURRENT_BINARY_DIR}/${JSON_TARGETS_FILENAME}")
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export(PACKAGE ${JSON_PACKAGE_NAME})
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# install library target and config files
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install(TARGETS ${JSON_TARGET_NAME}
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EXPORT ${JSON_PACKAGE_NAME})
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install(FILES "src/json.hpp"
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DESTINATION ${JSON_INCLUDE_DESTINATION})
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install(EXPORT ${JSON_PACKAGE_NAME}
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FILE ${JSON_TARGETS_FILENAME}
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DESTINATION ${JSON_CONFIG_DESTINATION})
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install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${JSON_CONFIG_FILENAME}"
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"${CMAKE_CURRENT_BINARY_DIR}/${JSON_CONFIGVERSION_FILENAME}"
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DESTINATION ${JSON_CONFIG_DESTINATION})
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