ClickHouse/cmake/find_xxhash.cmake

# Freebsd: TODO: use system devel/xxhash. now error: undefined reference to `XXH32'
if (LZ4_INCLUDE_DIR AND NOT OS_FREEBSD)
    if (NOT EXISTS "${LZ4_INCLUDE_DIR}/xxhash.h")
        message (WARNING "LZ4 library does not have XXHash. Support for XXHash will be disabled.")
        set (USE_XXHASH 0)
    else ()
        set (USE_XXHASH 1)
    endif ()
endif ()

message (STATUS "Using xxhash=${USE_XXHASH}")
Build fixes (FreeBSD port) (#4397) 2019-02-15 11:46:07 +00:00			# Freebsd: TODO: use system devel/xxhash. now error: undefined reference to `XXH32'
			`if (LZ4_INCLUDE_DIR AND NOT OS_FREEBSD)`
Fixed "unbundled" build #3905 2018-12-23 19:25:40 +00:00			`if (NOT EXISTS "${LZ4_INCLUDE_DIR}/xxhash.h")`
			`message (WARNING "LZ4 library does not have XXHash. Support for XXHash will be disabled.")`
			`set (USE_XXHASH 0)`
			`else ()`
			`set (USE_XXHASH 1)`
			`endif ()`
			`endif ()`

			`message (STATUS "Using xxhash=${USE_XXHASH}")`