cpp/cmake/LZ4Dependency.cmake

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set(TSFILE_LZ4_MIN_VERSION "1.9.4")
set(TSFILE_LZ4_NEXT_INCOMPATIBLE_VERSION "2.0.0")
set(_TSFILE_SYSTEM_LZ4_FOUND FALSE)

if (NOT TSFILE_DEPENDENCY_SOURCE STREQUAL "BUNDLED")
    find_package(LZ4 ${TSFILE_LZ4_MIN_VERSION} QUIET)
    if (LZ4_FOUND AND
            LZ4_VERSION VERSION_LESS TSFILE_LZ4_NEXT_INCOMPATIBLE_VERSION)
        set(_TSFILE_SYSTEM_LZ4_FOUND TRUE)
        message(STATUS "Found compatible system LZ4 ${LZ4_VERSION}")
    elseif (LZ4_FOUND)
        message(STATUS
                "Ignoring incompatible system LZ4 ${LZ4_VERSION}; "
                "TsFile requires >=${TSFILE_LZ4_MIN_VERSION} and "
                "<${TSFILE_LZ4_NEXT_INCOMPATIBLE_VERSION}")
    endif ()
endif ()

tsfile_resolve_dependency_source(
        "LZ4" "${_TSFILE_SYSTEM_LZ4_FOUND}" TSFILE_LZ4_SOURCE)

unset(_TSFILE_SYSTEM_LZ4_FOUND)