$ LC_ALL=C comm -12 <(/usr/lib/rpm/provided_symbols /lib64/libzstd.so.1) \
<(/usr/lib/rpm/provided_symbols /usr/lib64/ceph/compressor/libceph_zstd.so.2.0.0)
ZSTD_CCtxParam_setParameter
ZSTD_CCtx_loadDictionary
ZSTD_CCtx_loadDictionary_advanced
ZSTD_CCtx_loadDictionary_byReference
ZSTD_CCtx_refCDict
ZSTD_CCtx_refPrefix
ZSTD_CCtx_refPrefix_advanced
ZSTD_CCtx_reset
ZSTD_CCtx_setParameter
ZSTD_CCtx_setParametersUsingCCtxParams
ZSTD_CCtx_setPledgedSrcSize
ZSTD_CStreamInSize
ZSTD_CStreamOutSize
ZSTD_DCtx_reset
ZSTD_DCtx_setFormat
ZSTD_DCtx_setMaxWindowSize
ZSTD_DStreamInSize
ZSTD_DStreamOutSize
ZSTD_adjustCParams
ZSTD_checkCParams
ZSTD_compress
ZSTD_compressBegin
ZSTD_compressBegin_advanced
ZSTD_compressBegin_usingCDict
ZSTD_compressBegin_usingCDict_advanced
ZSTD_compressBegin_usingDict
ZSTD_compressBlock
ZSTD_compressBound
ZSTD_compressCCtx
ZSTD_compressContinue
ZSTD_compressEnd
ZSTD_compressStream
ZSTD_compress_advanced
ZSTD_compress_generic
ZSTD_compress_generic_simpleArgs
ZSTD_compress_usingCDict
ZSTD_compress_usingCDict_advanced
ZSTD_compress_usingDict
ZSTD_copyCCtx
ZSTD_copyDCtx
ZSTD_createCCtx
ZSTD_createCCtxParams
ZSTD_createCCtx_advanced
ZSTD_createCDict
ZSTD_createCDict_advanced
ZSTD_createCDict_byReference
ZSTD_createCStream
ZSTD_createCStream_advanced
ZSTD_createDCtx
ZSTD_createDCtx_advanced
ZSTD_createDDict
ZSTD_createDDict_advanced
ZSTD_createDDict_byReference
ZSTD_createDStream
ZSTD_createDStream_advanced
ZSTD_decodingBufferSize_min
ZSTD_decompress
ZSTD_decompressBegin
ZSTD_decompressBegin_usingDDict
ZSTD_decompressBegin_usingDict
ZSTD_decompressBlock
ZSTD_decompressContinue
ZSTD_decompressDCtx
ZSTD_decompressStream
ZSTD_decompress_generic
ZSTD_decompress_generic_simpleArgs
ZSTD_decompress_usingDDict
ZSTD_decompress_usingDict
ZSTD_endStream
ZSTD_estimateCCtxSize
ZSTD_estimateCCtxSize_usingCCtxParams
ZSTD_estimateCCtxSize_usingCParams
ZSTD_estimateCDictSize
ZSTD_estimateCDictSize_advanced
ZSTD_estimateCStreamSize
ZSTD_estimateCStreamSize_usingCCtxParams
ZSTD_estimateCStreamSize_usingCParams
ZSTD_estimateDCtxSize
ZSTD_estimateDDictSize
ZSTD_estimateDStreamSize
ZSTD_estimateDStreamSize_fromFrame
ZSTD_findDecompressedSize
ZSTD_findFrameCompressedSize
ZSTD_flushStream
ZSTD_frameHeaderSize
ZSTD_freeCCtx
ZSTD_freeCCtxParams
ZSTD_freeCDict
ZSTD_freeCStream
ZSTD_freeDCtx
ZSTD_freeDDict
ZSTD_freeDStream
ZSTD_getBlockSize
ZSTD_getCParams
ZSTD_getDecompressedSize
ZSTD_getDictID_fromDDict
ZSTD_getDictID_fromDict
ZSTD_getDictID_fromFrame
ZSTD_getErrorCode
ZSTD_getErrorName
ZSTD_getErrorString
ZSTD_getFrameContentSize
ZSTD_getFrameHeader
ZSTD_getParams
ZSTD_initCStream
ZSTD_initCStream_advanced
ZSTD_initCStream_srcSize
ZSTD_initCStream_usingCDict
ZSTD_initCStream_usingCDict_advanced
ZSTD_initCStream_usingDict
ZSTD_initDStream
ZSTD_initDStream_usingDDict
ZSTD_initDStream_usingDict
ZSTD_initStaticCCtx
ZSTD_initStaticCDict
ZSTD_initStaticCStream
ZSTD_initStaticDCtx
ZSTD_initStaticDDict
ZSTD_initStaticDStream
ZSTD_insertBlock
ZSTD_isError
ZSTD_isFrame
ZSTD_maxCLevel
ZSTD_nextInputType
ZSTD_nextSrcSizeToDecompress
ZSTD_resetCStream
ZSTD_resetDStream
ZSTD_setDStreamParameter
ZSTD_sizeof_CCtx
ZSTD_sizeof_CDict
ZSTD_sizeof_CStream
ZSTD_sizeof_DCtx
ZSTD_sizeof_DDict
ZSTD_sizeof_DStream
ZSTD_versionNumber
ZSTD_versionString