ClickHouse/cmake/find_zstd.cmake

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CMake
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option (USE_INTERNAL_ZSTD_LIBRARY "Set to FALSE to use system zstd library instead of bundled" ${NOT_UNBUNDLED})
if (NOT USE_INTERNAL_ZSTD_LIBRARY)
find_library (ZSTD_LIBRARY zstd)
find_path (ZSTD_INCLUDE_DIR NAMES zstd.h PATHS ${ZSTD_INCLUDE_PATHS})
endif ()
if (ZSTD_LIBRARY AND ZSTD_INCLUDE_DIR)
include_directories (${ZSTD_INCLUDE_DIR})
else ()
set (USE_INTERNAL_ZSTD_LIBRARY 1)
set (ZSTD_INCLUDE_DIR "${ClickHouse_SOURCE_DIR}/contrib/libzstd/include/zstd")
include_directories (BEFORE ${ZSTD_INCLUDE_DIR})
set (ZSTD_LIBRARY zstd)
endif ()
message (STATUS "Using zstd: ${ZSTD_INCLUDE_DIR} : ${ZSTD_LIBRARY}")