ClickHouse/cmake/find/hyperscan.cmake

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CMake
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if (HAVE_SSSE3)
option (ENABLE_HYPERSCAN "Enable hyperscan" ON)
endif ()
if (ENABLE_HYPERSCAN)
option (USE_INTERNAL_HYPERSCAN_LIBRARY "Set to FALSE to use system hyperscan instead of the bundled" ${NOT_UNBUNDLED})
if (NOT EXISTS "${ClickHouse_SOURCE_DIR}/contrib/hyperscan/CMakeLists.txt")
if (USE_INTERNAL_HYPERSCAN_LIBRARY)
message (WARNING "submodule contrib/hyperscan is missing. to fix try run: \n git submodule update --init --recursive")
endif ()
set (MISSING_INTERNAL_HYPERSCAN_LIBRARY 1)
set (USE_INTERNAL_HYPERSCAN_LIBRARY 0)
endif ()
if (NOT USE_INTERNAL_HYPERSCAN_LIBRARY)
find_library (HYPERSCAN_LIBRARY hs)
find_path (HYPERSCAN_INCLUDE_DIR NAMES hs/hs.h hs.h PATHS ${HYPERSCAN_INCLUDE_PATHS})
endif ()
if (HYPERSCAN_LIBRARY AND HYPERSCAN_INCLUDE_DIR)
set (USE_HYPERSCAN 1)
elseif (NOT MISSING_INTERNAL_HYPERSCAN_LIBRARY)
set (HYPERSCAN_INCLUDE_DIR ${ClickHouse_SOURCE_DIR}/contrib/hyperscan/src)
set (HYPERSCAN_LIBRARY hs)
set (USE_HYPERSCAN 1)
set (USE_INTERNAL_HYPERSCAN_LIBRARY 1)
endif()
message (STATUS "Using hyperscan=${USE_HYPERSCAN}: ${HYPERSCAN_INCLUDE_DIR} : ${HYPERSCAN_LIBRARY}")
endif ()