mirror of https://github.com/OpenTTD/OpenTTD.git
22 lines
858 B
CMake
22 lines
858 B
CMake
# nlohmann-json is a custom addition to the emscripten SDK, so it is possible
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# someone patched their SDK. Test out if the SDK supports nlohmann-json.
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include(CheckCXXSourceCompiles)
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set(CMAKE_REQUIRED_FLAGS "-sUSE_NLOHMANN_JSON=1")
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check_cxx_source_compiles("
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#include <nlohmann/json.hpp>
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int main() { return 0; }"
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nlohmann_json_FOUND
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)
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if (nlohmann_json_FOUND)
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add_library(nlohmann_json INTERFACE IMPORTED)
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set_target_properties(nlohmann_json PROPERTIES
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INTERFACE_COMPILE_OPTIONS "-sUSE_NLOHMANN_JSON=1"
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INTERFACE_LINK_LIBRARIES "-sUSE_NLOHMANN_JSON=1"
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)
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set(nlohmann_json_LIBRARY "nlohmann_json")
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else()
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message(WARNING "You are using an emscripten SDK without nlohmann-json support. Please apply 'emsdk-nlohmann_json.patch' to your local emsdk installation.")
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endif()
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