ClickHouse/cmake/find/grpc.cmake

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CMake
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option (ENABLE_GRPC "Use gRPC" ${ENABLE_LIBRARIES})
if (ENABLE_GRPC)
option (USE_INTERNAL_GRPC_LIBRARY "Set to FALSE to use system gRPC library instead of bundled" ${NOT_UNBUNDLED})
if (USE_INTERNAL_GRPC_LIBRARY)
if (NOT EXISTS "${ClickHouse_SOURCE_DIR}/contrib/grpc/include/grpc++/grpc++.h")
message(WARNING "submodule contrib/grpc is missing. To fix try run: \n git submodule update --init --recursive")
set (USE_INTERNAL_GRPC_LIBRARY OFF)
elif (NOT USE_PROTOBUF)
message(WARNING "gRPC requires protobuf which is disabled")
set (USE_INTERNAL_GRPC_LIBRARY OFF)
else()
set (GRPC_INCLUDE_DIR "${ClickHouse_SOURCE_DIR}/contrib/grpc/include")
set (GRPC_LIBRARY "libgrpc++")
set (USE_GRPC ON)
endif()
else()
find_package(grpc)
if (GRPC_INCLUDE_DIR AND GRPC_LIBRARY)
set (USE_GRPC ON)
endif()
endif()
endif()
message(STATUS "Using gRPC=${USE_GRPC}: ${GRPC_INCLUDE_DIR} : ${GRPC_LIBRARY}")