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# Look for JsonCpp, with fallback to bundeled version
mark_as_advanced(JSON_LIBRARY JSON_INCLUDE_DIR)
option(ENABLE_SYSTEM_JSONCPP "Enable using a system-wide JsonCpp" TRUE)
set(USE_SYSTEM_JSONCPP FALSE)
if(ENABLE_SYSTEM_JSONCPP)
find_library(JSON_LIBRARY NAMES jsoncpp)
find_path(JSON_INCLUDE_DIR json/allocator.h PATH_SUFFIXES jsoncpp)
if(JSON_LIBRARY AND JSON_INCLUDE_DIR)
message(STATUS "Using JsonCpp provided by system.")
set(USE_SYSTEM_JSONCPP TRUE)
endif()
endif()
if(NOT USE_SYSTEM_JSONCPP)
message(STATUS "Using bundled JsonCpp library.")
set(JSON_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/lib/jsoncpp)
set(JSON_LIBRARY jsoncpp)
add_subdirectory(lib/jsoncpp)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Json DEFAULT_MSG JSON_LIBRARY JSON_INCLUDE_DIR)