cpp/cmake/SnappyDependency.cmake

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set(TSFILE_SNAPPY_MIN_VERSION "1.2.1")
set(TSFILE_SNAPPY_BUNDLED_VERSION "1.2.2")
set(TSFILE_SNAPPY_NEXT_INCOMPATIBLE_VERSION "2.0.0")
set(_TSFILE_SYSTEM_SNAPPY_FOUND FALSE)

if (NOT TSFILE_DEPENDENCY_SOURCE STREQUAL "BUNDLED")
    find_package(Snappy ${TSFILE_SNAPPY_MIN_VERSION} CONFIG QUIET)
    if (Snappy_FOUND AND TARGET Snappy::snappy AND
            NOT "${Snappy_VERSION}" STREQUAL "" AND
            Snappy_VERSION VERSION_LESS
                    TSFILE_SNAPPY_NEXT_INCOMPATIBLE_VERSION)
        set(_TSFILE_SYSTEM_SNAPPY_FOUND TRUE)
        message(STATUS "Found compatible system Snappy ${Snappy_VERSION}")
    elseif (Snappy_FOUND)
        message(STATUS
                "Ignoring incompatible system Snappy ${Snappy_VERSION}; "
                "TsFile requires >=${TSFILE_SNAPPY_MIN_VERSION} and "
                "<${TSFILE_SNAPPY_NEXT_INCOMPATIBLE_VERSION}")
    endif ()
endif ()

tsfile_resolve_dependency_source(
        "Snappy" "${_TSFILE_SYSTEM_SNAPPY_FOUND}" TSFILE_SNAPPY_SOURCE)

unset(_TSFILE_SYSTEM_SNAPPY_FOUND)