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26 lines
933 B
CMake
26 lines
933 B
CMake
#
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# Loads the nlohmann_json library giving the priority to the system package first, with a fallback to FetchContent.
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#
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include_guard(GLOBAL)
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find_package(nlohmann_json 3.11 QUIET GLOBAL)
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if(NOT nlohmann_json_FOUND)
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message(STATUS "nlohmann_json v3.11.x package not found in the system. Falling back to FetchContent.")
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include(FetchContent)
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if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.24.0")
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cmake_policy(SET CMP0135 NEW) # Avoid warning about DOWNLOAD_EXTRACT_TIMESTAMP in CMake 3.24
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endif()
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if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.31.0")
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cmake_policy(SET CMP0174 NEW) # Handle empty variables
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endif()
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FetchContent_Declare(
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json
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URL https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz
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URL_HASH MD5=c23a33f04786d85c29fda8d16b5f0efd
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DOWNLOAD_EXTRACT_TIMESTAMP
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)
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FetchContent_MakeAvailable(json)
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endif()
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