ClickHouse/cmake/find/rdkafka.cmake

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CMake
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option (ENABLE_RDKAFKA "Enable kafka" ${ENABLE_LIBRARIES})
if (NOT ENABLE_RDKAFKA)
if (USE_INTERNAL_RDKAFKA_LIBRARY)
message (${RECONFIGURE_MESSAGE_LEVEL} "Can't use internal librdkafka with ENABLE_RDKAFKA=OFF")
endif()
return()
endif()
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option (USE_INTERNAL_RDKAFKA_LIBRARY "Set to FALSE to use system librdkafka instead of the bundled" ${NOT_UNBUNDLED})
if (NOT EXISTS "${ClickHouse_SOURCE_DIR}/contrib/cppkafka/CMakeLists.txt")
if(USE_INTERNAL_RDKAFKA_LIBRARY)
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message (WARNING "submodule contrib/cppkafka is missing. to fix try run: \n git submodule update --init")
message (${RECONFIGURE_MESSAGE_LEVEL} "Can't find internal cppkafka")
set (USE_INTERNAL_RDKAFKA_LIBRARY 0)
endif()
set (MISSING_INTERNAL_CPPKAFKA_LIBRARY 1)
endif ()
if (NOT EXISTS "${ClickHouse_SOURCE_DIR}/contrib/librdkafka/CMakeLists.txt")
if(USE_INTERNAL_RDKAFKA_LIBRARY OR MISSING_INTERNAL_CPPKAFKA_LIBRARY)
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message (WARNING "submodule contrib/librdkafka is missing. to fix try run: \n git submodule update --init")
message (${RECONFIGURE_MESSAGE_LEVEL} "Can't find internal rdkafka")
set (USE_INTERNAL_RDKAFKA_LIBRARY 0)
endif()
set (MISSING_INTERNAL_RDKAFKA_LIBRARY 1)
endif ()
if (NOT USE_INTERNAL_RDKAFKA_LIBRARY)
find_library (RDKAFKA_LIB rdkafka)
find_path (RDKAFKA_INCLUDE_DIR NAMES librdkafka/rdkafka.h PATHS ${RDKAFKA_INCLUDE_PATHS})
if (NOT RDKAFKA_LIB OR NOT RDKAFKA_INCLUDE_DIR)
message (${RECONFIGURE_MESSAGE_LEVEL} "Can't find system librdkafka")
endif()
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if (USE_STATIC_LIBRARIES AND NOT OS_FREEBSD)
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find_library (SASL2_LIBRARY sasl2)
if (NOT SASL2_LIBRARY)
message (${RECONFIGURE_MESSAGE_LEVEL} "Can't find system sasl2 library needed for static librdkafka")
endif()
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endif ()
set (CPPKAFKA_LIBRARY cppkafka) # TODO: try to use unbundled version.
endif ()
if (RDKAFKA_LIB AND RDKAFKA_INCLUDE_DIR)
set (USE_RDKAFKA 1)
add_library (rdkafka_imp UNKNOWN IMPORTED)
set_target_properties (rdkafka_imp PROPERTIES IMPORTED_LOCATION ${RDKAFKA_LIB})
set_target_properties (rdkafka_imp PROPERTIES INTERFACE_INCLUDE_DIRECTORIES ${RDKAFKA_INCLUDE_DIR})
set (RDKAFKA_LIBRARY rdkafka_imp ${OPENSSL_LIBRARIES})
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set (CPPKAFKA_LIBRARY cppkafka)
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if (SASL2_LIBRARY)
list (APPEND RDKAFKA_LIBRARY ${SASL2_LIBRARY})
endif ()
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if (LZ4_LIBRARY)
list (APPEND RDKAFKA_LIBRARY ${LZ4_LIBRARY})
endif ()
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elseif (NOT MISSING_INTERNAL_RDKAFKA_LIBRARY AND NOT MISSING_INTERNAL_CPPKAFKA_LIBRARY)
set (USE_INTERNAL_RDKAFKA_LIBRARY 1)
set (RDKAFKA_INCLUDE_DIR "${ClickHouse_SOURCE_DIR}/contrib/librdkafka/src")
set (RDKAFKA_LIBRARY rdkafka)
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set (CPPKAFKA_LIBRARY cppkafka)
set (USE_RDKAFKA 1)
endif ()
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message (STATUS "Using librdkafka=${USE_RDKAFKA}: ${RDKAFKA_INCLUDE_DIR} : ${RDKAFKA_LIBRARY} ${CPPKAFKA_LIBRARY}")