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Date:      Wed, 6 Nov 2019 06:43:13 +0000 (UTC)
From:      Conrad Meyer <cem@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-vendor@freebsd.org
Subject:   svn commit: r354372 - in vendor/zstd/1.4.4: . contrib/adaptive-compression contrib/gen_html contrib/pzstd contrib/seekable_format/examples doc doc/educational_decoder examples lib lib/common lib/co...
Message-ID:  <201911060643.xA66hDZN069989@repo.freebsd.org>

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Author: cem
Date: Wed Nov  6 06:43:13 2019
New Revision: 354372
URL: https://svnweb.freebsd.org/changeset/base/354372

Log:
  Tag Zstd 1.4.4

Added:
  vendor/zstd/1.4.4/
     - copied from r354369, vendor/zstd/dist/
  vendor/zstd/1.4.4/lib/compress/zstd_cwksp.h
     - copied unchanged from r354371, vendor/zstd/dist/lib/compress/zstd_cwksp.h
  vendor/zstd/1.4.4/tests/fuzz/dictionary_loader.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/dictionary_loader.c
  vendor/zstd/1.4.4/tests/fuzz/fuzz_data_producer.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/fuzz_data_producer.c
  vendor/zstd/1.4.4/tests/fuzz/fuzz_data_producer.h
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/fuzz_data_producer.h
  vendor/zstd/1.4.4/tests/golden-compression/
     - copied from r354371, vendor/zstd/dist/tests/golden-compression/
  vendor/zstd/1.4.4/tests/golden-decompression/
     - copied from r354371, vendor/zstd/dist/tests/golden-decompression/
Replaced:
  vendor/zstd/1.4.4/CHANGELOG
     - copied unchanged from r354371, vendor/zstd/dist/CHANGELOG
  vendor/zstd/1.4.4/Makefile
     - copied unchanged from r354371, vendor/zstd/dist/Makefile
  vendor/zstd/1.4.4/README.md
     - copied unchanged from r354371, vendor/zstd/dist/README.md
  vendor/zstd/1.4.4/appveyor.yml
     - copied unchanged from r354371, vendor/zstd/dist/appveyor.yml
  vendor/zstd/1.4.4/doc/educational_decoder/Makefile
     - copied unchanged from r354371, vendor/zstd/dist/doc/educational_decoder/Makefile
  vendor/zstd/1.4.4/doc/educational_decoder/harness.c
     - copied unchanged from r354371, vendor/zstd/dist/doc/educational_decoder/harness.c
  vendor/zstd/1.4.4/doc/educational_decoder/zstd_decompress.c
     - copied unchanged from r354371, vendor/zstd/dist/doc/educational_decoder/zstd_decompress.c
  vendor/zstd/1.4.4/doc/educational_decoder/zstd_decompress.h
     - copied unchanged from r354371, vendor/zstd/dist/doc/educational_decoder/zstd_decompress.h
  vendor/zstd/1.4.4/doc/zstd_compression_format.md
     - copied unchanged from r354371, vendor/zstd/dist/doc/zstd_compression_format.md
  vendor/zstd/1.4.4/doc/zstd_manual.html
     - copied unchanged from r354371, vendor/zstd/dist/doc/zstd_manual.html
  vendor/zstd/1.4.4/examples/streaming_compression.c
     - copied unchanged from r354371, vendor/zstd/dist/examples/streaming_compression.c
  vendor/zstd/1.4.4/examples/streaming_decompression.c
     - copied unchanged from r354371, vendor/zstd/dist/examples/streaming_decompression.c
  vendor/zstd/1.4.4/lib/Makefile
     - copied unchanged from r354371, vendor/zstd/dist/lib/Makefile
  vendor/zstd/1.4.4/lib/README.md
     - copied unchanged from r354371, vendor/zstd/dist/lib/README.md
  vendor/zstd/1.4.4/lib/common/bitstream.h
     - copied unchanged from r354371, vendor/zstd/dist/lib/common/bitstream.h
  vendor/zstd/1.4.4/lib/common/compiler.h
     - copied unchanged from r354371, vendor/zstd/dist/lib/common/compiler.h
  vendor/zstd/1.4.4/lib/common/fse.h
     - copied unchanged from r354371, vendor/zstd/dist/lib/common/fse.h
  vendor/zstd/1.4.4/lib/common/fse_decompress.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/common/fse_decompress.c
  vendor/zstd/1.4.4/lib/common/mem.h
     - copied unchanged from r354371, vendor/zstd/dist/lib/common/mem.h
  vendor/zstd/1.4.4/lib/common/pool.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/common/pool.c
  vendor/zstd/1.4.4/lib/common/threading.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/common/threading.c
  vendor/zstd/1.4.4/lib/common/threading.h
     - copied unchanged from r354371, vendor/zstd/dist/lib/common/threading.h
  vendor/zstd/1.4.4/lib/common/xxhash.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/common/xxhash.c
  vendor/zstd/1.4.4/lib/common/zstd_internal.h
     - copied unchanged from r354371, vendor/zstd/dist/lib/common/zstd_internal.h
  vendor/zstd/1.4.4/lib/compress/zstd_compress.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/compress/zstd_compress.c
  vendor/zstd/1.4.4/lib/compress/zstd_compress_internal.h
     - copied unchanged from r354371, vendor/zstd/dist/lib/compress/zstd_compress_internal.h
  vendor/zstd/1.4.4/lib/compress/zstd_compress_literals.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/compress/zstd_compress_literals.c
  vendor/zstd/1.4.4/lib/compress/zstd_compress_literals.h
     - copied unchanged from r354371, vendor/zstd/dist/lib/compress/zstd_compress_literals.h
  vendor/zstd/1.4.4/lib/compress/zstd_compress_sequences.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/compress/zstd_compress_sequences.c
  vendor/zstd/1.4.4/lib/compress/zstd_compress_sequences.h
     - copied unchanged from r354371, vendor/zstd/dist/lib/compress/zstd_compress_sequences.h
  vendor/zstd/1.4.4/lib/compress/zstd_double_fast.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/compress/zstd_double_fast.c
  vendor/zstd/1.4.4/lib/compress/zstd_fast.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/compress/zstd_fast.c
  vendor/zstd/1.4.4/lib/compress/zstd_lazy.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/compress/zstd_lazy.c
  vendor/zstd/1.4.4/lib/compress/zstd_ldm.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/compress/zstd_ldm.c
  vendor/zstd/1.4.4/lib/compress/zstd_opt.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/compress/zstd_opt.c
  vendor/zstd/1.4.4/lib/compress/zstdmt_compress.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/compress/zstdmt_compress.c
  vendor/zstd/1.4.4/lib/decompress/huf_decompress.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/decompress/huf_decompress.c
  vendor/zstd/1.4.4/lib/decompress/zstd_decompress.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/decompress/zstd_decompress.c
  vendor/zstd/1.4.4/lib/decompress/zstd_decompress_block.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/decompress/zstd_decompress_block.c
  vendor/zstd/1.4.4/lib/deprecated/zbuff.h
     - copied unchanged from r354371, vendor/zstd/dist/lib/deprecated/zbuff.h
  vendor/zstd/1.4.4/lib/dictBuilder/cover.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/dictBuilder/cover.c
  vendor/zstd/1.4.4/lib/dictBuilder/zdict.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/dictBuilder/zdict.c
  vendor/zstd/1.4.4/lib/legacy/zstd_v01.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/legacy/zstd_v01.c
  vendor/zstd/1.4.4/lib/legacy/zstd_v02.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/legacy/zstd_v02.c
  vendor/zstd/1.4.4/lib/legacy/zstd_v03.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/legacy/zstd_v03.c
  vendor/zstd/1.4.4/lib/legacy/zstd_v04.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/legacy/zstd_v04.c
  vendor/zstd/1.4.4/lib/legacy/zstd_v05.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/legacy/zstd_v05.c
  vendor/zstd/1.4.4/lib/legacy/zstd_v06.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/legacy/zstd_v06.c
  vendor/zstd/1.4.4/lib/legacy/zstd_v07.c
     - copied unchanged from r354371, vendor/zstd/dist/lib/legacy/zstd_v07.c
  vendor/zstd/1.4.4/lib/libzstd.pc.in
     - copied unchanged from r354371, vendor/zstd/dist/lib/libzstd.pc.in
  vendor/zstd/1.4.4/lib/zstd.h
     - copied unchanged from r354371, vendor/zstd/dist/lib/zstd.h
  vendor/zstd/1.4.4/programs/README.md
     - copied unchanged from r354371, vendor/zstd/dist/programs/README.md
  vendor/zstd/1.4.4/programs/benchzstd.c
     - copied unchanged from r354371, vendor/zstd/dist/programs/benchzstd.c
  vendor/zstd/1.4.4/programs/benchzstd.h
     - copied unchanged from r354371, vendor/zstd/dist/programs/benchzstd.h
  vendor/zstd/1.4.4/programs/datagen.c
     - copied unchanged from r354371, vendor/zstd/dist/programs/datagen.c
  vendor/zstd/1.4.4/programs/dibio.c
     - copied unchanged from r354371, vendor/zstd/dist/programs/dibio.c
  vendor/zstd/1.4.4/programs/fileio.c
     - copied unchanged from r354371, vendor/zstd/dist/programs/fileio.c
  vendor/zstd/1.4.4/programs/fileio.h
     - copied unchanged from r354371, vendor/zstd/dist/programs/fileio.h
  vendor/zstd/1.4.4/programs/platform.h
     - copied unchanged from r354371, vendor/zstd/dist/programs/platform.h
  vendor/zstd/1.4.4/programs/timefn.h
     - copied unchanged from r354371, vendor/zstd/dist/programs/timefn.h
  vendor/zstd/1.4.4/programs/util.c
     - copied unchanged from r354371, vendor/zstd/dist/programs/util.c
  vendor/zstd/1.4.4/programs/util.h
     - copied unchanged from r354371, vendor/zstd/dist/programs/util.h
  vendor/zstd/1.4.4/programs/zstd.1
     - copied unchanged from r354371, vendor/zstd/dist/programs/zstd.1
  vendor/zstd/1.4.4/programs/zstd.1.md
     - copied unchanged from r354371, vendor/zstd/dist/programs/zstd.1.md
  vendor/zstd/1.4.4/programs/zstdcli.c
     - copied unchanged from r354371, vendor/zstd/dist/programs/zstdcli.c
  vendor/zstd/1.4.4/programs/zstdgrep.1
     - copied unchanged from r354371, vendor/zstd/dist/programs/zstdgrep.1
  vendor/zstd/1.4.4/programs/zstdless.1
     - copied unchanged from r354371, vendor/zstd/dist/programs/zstdless.1
  vendor/zstd/1.4.4/tests/Makefile
     - copied unchanged from r354371, vendor/zstd/dist/tests/Makefile
  vendor/zstd/1.4.4/tests/decodecorpus.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/decodecorpus.c
  vendor/zstd/1.4.4/tests/fullbench.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/fullbench.c
  vendor/zstd/1.4.4/tests/fuzz/Makefile
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/Makefile
  vendor/zstd/1.4.4/tests/fuzz/README.md
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/README.md
  vendor/zstd/1.4.4/tests/fuzz/block_decompress.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/block_decompress.c
  vendor/zstd/1.4.4/tests/fuzz/block_round_trip.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/block_round_trip.c
  vendor/zstd/1.4.4/tests/fuzz/dictionary_decompress.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/dictionary_decompress.c
  vendor/zstd/1.4.4/tests/fuzz/dictionary_round_trip.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/dictionary_round_trip.c
  vendor/zstd/1.4.4/tests/fuzz/fuzz.h
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/fuzz.h
  vendor/zstd/1.4.4/tests/fuzz/fuzz.py
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/fuzz.py
  vendor/zstd/1.4.4/tests/fuzz/fuzz_helpers.h
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/fuzz_helpers.h
  vendor/zstd/1.4.4/tests/fuzz/regression_driver.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/regression_driver.c
  vendor/zstd/1.4.4/tests/fuzz/simple_compress.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/simple_compress.c
  vendor/zstd/1.4.4/tests/fuzz/simple_decompress.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/simple_decompress.c
  vendor/zstd/1.4.4/tests/fuzz/simple_round_trip.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/simple_round_trip.c
  vendor/zstd/1.4.4/tests/fuzz/stream_decompress.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/stream_decompress.c
  vendor/zstd/1.4.4/tests/fuzz/stream_round_trip.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/stream_round_trip.c
  vendor/zstd/1.4.4/tests/fuzz/zstd_frame_info.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/zstd_frame_info.c
  vendor/zstd/1.4.4/tests/fuzz/zstd_helpers.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/zstd_helpers.c
  vendor/zstd/1.4.4/tests/fuzz/zstd_helpers.h
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzz/zstd_helpers.h
  vendor/zstd/1.4.4/tests/fuzzer.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/fuzzer.c
  vendor/zstd/1.4.4/tests/playTests.sh
     - copied unchanged from r354371, vendor/zstd/dist/tests/playTests.sh
  vendor/zstd/1.4.4/tests/poolTests.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/poolTests.c
  vendor/zstd/1.4.4/tests/regression/method.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/regression/method.c
  vendor/zstd/1.4.4/tests/regression/results.csv
     - copied unchanged from r354371, vendor/zstd/dist/tests/regression/results.csv
  vendor/zstd/1.4.4/tests/zbufftest.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/zbufftest.c
  vendor/zstd/1.4.4/tests/zstreamtest.c
     - copied unchanged from r354371, vendor/zstd/dist/tests/zstreamtest.c
  vendor/zstd/1.4.4/zlibWrapper/Makefile
     - copied unchanged from r354371, vendor/zstd/dist/zlibWrapper/Makefile
  vendor/zstd/1.4.4/zlibWrapper/examples/fitblk.c
     - copied unchanged from r354371, vendor/zstd/dist/zlibWrapper/examples/fitblk.c
  vendor/zstd/1.4.4/zlibWrapper/examples/zwrapbench.c
     - copied unchanged from r354371, vendor/zstd/dist/zlibWrapper/examples/zwrapbench.c
  vendor/zstd/1.4.4/zlibWrapper/gzclose.c
     - copied unchanged from r354371, vendor/zstd/dist/zlibWrapper/gzclose.c
  vendor/zstd/1.4.4/zlibWrapper/gzlib.c
     - copied unchanged from r354371, vendor/zstd/dist/zlibWrapper/gzlib.c
  vendor/zstd/1.4.4/zlibWrapper/gzread.c
     - copied unchanged from r354371, vendor/zstd/dist/zlibWrapper/gzread.c
  vendor/zstd/1.4.4/zlibWrapper/gzwrite.c
     - copied unchanged from r354371, vendor/zstd/dist/zlibWrapper/gzwrite.c
  vendor/zstd/1.4.4/zlibWrapper/zstd_zlibwrapper.c
     - copied unchanged from r354371, vendor/zstd/dist/zlibWrapper/zstd_zlibwrapper.c
Deleted:
  vendor/zstd/1.4.4/contrib/adaptive-compression/Makefile
  vendor/zstd/1.4.4/contrib/adaptive-compression/README.md
  vendor/zstd/1.4.4/contrib/adaptive-compression/adapt.c
  vendor/zstd/1.4.4/contrib/adaptive-compression/datagencli.c
  vendor/zstd/1.4.4/contrib/adaptive-compression/test-correctness.sh
  vendor/zstd/1.4.4/contrib/adaptive-compression/test-performance.sh
  vendor/zstd/1.4.4/contrib/gen_html/.gitignore
  vendor/zstd/1.4.4/contrib/pzstd/.gitignore
  vendor/zstd/1.4.4/contrib/seekable_format/examples/.gitignore
  vendor/zstd/1.4.4/examples/.gitignore
  vendor/zstd/1.4.4/lib/.gitignore
  vendor/zstd/1.4.4/programs/.gitignore
  vendor/zstd/1.4.4/tests/.gitignore
  vendor/zstd/1.4.4/tests/files/huffman-compressed-larger
  vendor/zstd/1.4.4/zlibWrapper/.gitignore

Copied: vendor/zstd/1.4.4/CHANGELOG (from r354371, vendor/zstd/dist/CHANGELOG)
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ vendor/zstd/1.4.4/CHANGELOG	Wed Nov  6 06:43:13 2019	(r354372, copy of r354371, vendor/zstd/dist/CHANGELOG)
@@ -0,0 +1,528 @@
+v1.4.4
+perf: Improved decompression speed, by > 10%, by @terrelln
+perf: Better compression speed when re-using a context, by @felixhandte
+perf: Fix compression ratio when compressing large files with small dictionary, by @senhuang42
+perf: zstd reference encoder can generate RLE blocks, by @bimbashrestha
+perf: minor generic speed optimization, by @davidbolvansky
+api: new ability to extract sequences from the parser for analysis, by @bimbashrestha
+api: fixed decoding of magic-less frames, by @terrelln
+api: fixed ZSTD_initCStream_advanced() performance with fast modes, reported by @QrczakMK
+cli: Named pipes support, by @bimbashrestha
+cli: short tar's extension support, by @stokito
+cli: command --output-dir-flat= , generates target files into requested directory, by @senhuang42
+cli: commands --stream-size=# and --size-hint=#, by @nmagerko
+cli: command --exclude-compressed, by @shashank0791
+cli: faster `-t` test mode
+cli: improved some error messages, by @vangyzen
+cli: rare deadlock condition within dictionary builder, by @terrelln
+build: single-file decoder with emscripten compilation script, by @cwoffenden
+build: fixed zlibWrapper compilation on Visual Studio, reported by @bluenlive
+build: fixed deprecation warning for certain gcc version, reported by @jasonma163
+build: fix compilation on old gcc versions, by @cemeyer
+build: improved installation directories for cmake script, by Dmitri Shubin
+pack: modified pkgconfig, for better integration into openwrt, requested by @neheb
+misc: Improved documentation : ZSTD_CLEVEL, DYNAMIC_BMI2, ZSTD_CDict, function deprecation, zstd format
+misc: fixed educational decoder : accept larger literals section, and removed UNALIGNED() macro
+
+v1.4.3
+bug: Fix Dictionary Compression Ratio Regression by @cyan4973 (#1709)
+bug: Fix Buffer Overflow in legacy v0.3 decompression by @felixhandte (#1722)
+build: Add support for IAR C/C++ Compiler for Arm by @joseph0918 (#1705)
+
+v1.4.2
+bug: Fix bug in zstd-0.5 decoder by @terrelln (#1696)
+bug: Fix seekable decompression in-memory API by @iburinoc (#1695)
+misc: Validate blocks are smaller than size limit by @vivekmg (#1685)
+misc: Restructure source files by @ephiepark (#1679)
+
+v1.4.1
+bug: Fix data corruption in niche use cases by @terrelln (#1659)
+bug: Fuzz legacy modes, fix uncovered bugs by @terrelln (#1593, #1594, #1595)
+bug: Fix out of bounds read by @terrelln (#1590)
+perf: Improve decode speed by ~7% @mgrice (#1668)
+perf: Slightly improved compression ratio of level 3 and 4 (ZSTD_dfast) by @cyan4973 (#1681)
+perf: Slightly faster compression speed when re-using a context by @cyan4973 (#1658)
+perf: Improve compression ratio for small windowLog by @cyan4973 (#1624)
+perf: Faster compression speed in high compression mode for repetitive data by @terrelln (#1635)
+api: Add parameter to generate smaller dictionaries by @tyler-tran (#1656)
+cli: Recognize symlinks when built in C99 mode by @felixhandte (#1640)
+cli: Expose cpu load indicator for each file on -vv mode by @ephiepark (#1631)
+cli: Restrict read permissions on destination files by @chungy (#1644)
+cli: zstdgrep: handle -f flag by @felixhandte (#1618)
+cli: zstdcat: follow symlinks by @vejnar (#1604)
+doc: Remove extra size limit on compressed blocks by @felixhandte (#1689)
+doc: Fix typo by @yk-tanigawa (#1633)
+doc: Improve documentation on streaming buffer sizes by @cyan4973 (#1629)
+build: CMake: support building with LZ4 @leeyoung624 (#1626)
+build: CMake: install zstdless and zstdgrep by @leeyoung624 (#1647)
+build: CMake: respect existing uninstall target by @j301scott (#1619)
+build: Make: skip multithread tests when built without support by @michaelforney (#1620)
+build: Make: Fix examples/ test target by @sjnam (#1603)
+build: Meson: rename options out of deprecated namespace by @lzutao (#1665)
+build: Meson: fix build by @lzutao (#1602)
+build: Visual Studio: don't export symbols in static lib by @scharan (#1650)
+build: Visual Studio: fix linking by @absotively (#1639)
+build: Fix MinGW-W64 build by @myzhang1029 (#1600)
+misc: Expand decodecorpus coverage by @ephiepark (#1664)
+
+v1.4.0
+perf: Improve level 1 compression speed in most scenarios by 6% by @gbtucker and @terrelln
+api: Move the advanced API, including all functions in the staging section, to the stable section
+api: Make ZSTD_e_flush and ZSTD_e_end block for maximum forward progress
+api: Rename ZSTD_CCtxParam_getParameter to ZSTD_CCtxParams_getParameter
+api: Rename ZSTD_CCtxParam_setParameter to ZSTD_CCtxParams_setParameter
+api: Don't export ZSTDMT functions from the shared library by default
+api: Require ZSTD_MULTITHREAD to be defined to use ZSTDMT
+api: Add ZSTD_decompressBound() to provide an upper bound on decompressed size by @shakeelrao
+api: Fix ZSTD_decompressDCtx() corner cases with a dictionary
+api: Move ZSTD_getDictID_*() functions to the stable section
+api: Add ZSTD_c_literalCompressionMode flag to enable or disable literal compression by @terrelln
+api: Allow compression parameters to be set when a dictionary is used
+api: Allow setting parameters before or after ZSTD_CCtx_loadDictionary() is called
+api: Fix ZSTD_estimateCStreamSize_usingCCtxParams()
+api: Setting ZSTD_d_maxWindowLog to 0 means use the default
+cli: Ensure that a dictionary is not used to compress itself by @shakeelrao
+cli: Add --[no-]compress-literals flag to enable or disable literal compression
+doc: Update the examples to use the advanced API
+doc: Explain how to transition from old streaming functions to the advanced API in the header
+build: Improve the Windows release packages
+build: Improve CMake build by @hjmjohnson
+build: Build fixes for FreeBSD by @lwhsu
+build: Remove redundant warnings by @thatsafunnyname
+build: Fix tests on OpenBSD by @bket
+build: Extend fuzzer build system to work with the new clang engine
+build: CMake now creates the libzstd.so.1 symlink
+build: Improve Menson build by @lzutao
+misc: Fix symbolic link detection on FreeBSD
+misc: Use physical core count for -T0 on FreeBSD by @cemeyer
+misc: Fix zstd --list on truncated files by @kostmo
+misc: Improve logging in debug mode by @felixhandte
+misc: Add CirrusCI tests by @lwhsu
+misc: Optimize dictionary memory usage in corner cases
+misc: Improve the dictionary builder on small or homogeneous data
+misc: Fix spelling across the repo by @jsoref
+
+v1.3.8
+perf: better decompression speed on large files (+7%) and cold dictionaries (+15%)
+perf: slightly better compression ratio at high compression modes
+api : finalized advanced API, last stage before "stable" status
+api : new --rsyncable mode, by @terrelln
+api : support decompression of empty frames into NULL (used to be an error) (#1385)
+build: new set of macros to build a minimal size decoder, by @felixhandte
+build: fix compilation on MIPS32, reported by @clbr (#1441)
+build: fix compilation with multiple -arch flags, by @ryandesign
+build: highly upgraded meson build, by @lzutao
+build: improved buck support, by @obelisk
+build: fix cmake script : can create debug build, by @pitrou
+build: Makefile : grep works on both colored consoles and systems without color support
+build: fixed zstd-pgo, by @bmwiedemann
+cli : support ZSTD_CLEVEL environment variable, by @yijinfb (#1423)
+cli : --no-progress flag, preserving final summary (#1371), by @terrelln
+cli : ensure destination file is not source file (#1422)
+cli : clearer error messages, especially when input file not present
+doc : clarified zstd_compression_format.md, by @ulikunitz
+misc: fixed zstdgrep, returns 1 on failure, by @lzutao
+misc: NEWS renamed as CHANGELOG, in accordance with fboss
+
+v1.3.7
+perf: slightly better decompression speed on clang (depending on hardware target)
+fix : performance of dictionary compression for small input < 4 KB at levels 9 and 10
+build: no longer build backtrace by default in release mode; restrict further automatic mode
+build: control backtrace support through build macro BACKTRACE
+misc: added man pages for zstdless and zstdgrep, by @samrussell
+
+v1.3.6
+perf: much faster dictionary builder, by @jenniferliu
+perf: faster dictionary compression on small data when using multiple contexts, by @felixhandte
+perf: faster dictionary decompression when using a very large number of dictionaries simultaneously
+cli : fix : does no longer overwrite destination when source does not exist (#1082)
+cli : new command --adapt, for automatic compression level adaptation
+api : fix : block api can be streamed with > 4 GB, reported by @catid
+api : reduced ZSTD_DDict size by 2 KB
+api : minimum negative compression level is defined, and can be queried using ZSTD_minCLevel().
+build: support Haiku target, by @korli
+build: Read Legacy format is limited to v0.5+ by default. Can be changed at compile time with macro ZSTD_LEGACY_SUPPORT.
+doc : zstd_compression_format.md updated to match wording in IETF RFC 8478
+misc: tests/paramgrill, a parameter optimizer, by @GeorgeLu97
+
+v1.3.5
+perf: much faster dictionary compression, by @felixhandte
+perf: small quality improvement for dictionary generation, by @terrelln
+perf: slightly improved high compression levels (notably level 19)
+mem : automatic memory release for long duration contexts
+cli : fix : overlapLog can be manually set
+cli : fix : decoding invalid lz4 frames
+api : fix : performance degradation for dictionary compression when using advanced API, by @terrelln
+api : change : clarify ZSTD_CCtx_reset() vs ZSTD_CCtx_resetParameters(), by @terrelln
+build: select custom libzstd scope through control macros, by @GeorgeLu97
+build: OpenBSD patch, by @bket
+build: make and make all are compatible with -j
+doc : clarify zstd_compression_format.md, updated for IETF RFC process
+misc: pzstd compatible with reproducible compilation, by @lamby
+
+v1.3.4
+perf: faster speed (especially decoding speed) on recent cpus (haswell+)
+perf: much better performance associating --long with multi-threading, by @terrelln
+perf: better compression at levels 13-15
+cli : asynchronous compression by default, for faster experience (use --single-thread for former behavior)
+cli : smoother status report in multi-threading mode
+cli : added command --fast=#, for faster compression modes
+cli : fix crash when not overwriting existing files, by Pádraig Brady (@pixelb)
+api : `nbThreads` becomes `nbWorkers` : 1 triggers asynchronous mode
+api : compression levels can be negative, for even more speed
+api : ZSTD_getFrameProgression() : get precise progress status of ZSTDMT anytime
+api : ZSTDMT can accept new compression parameters during compression
+api : implemented all advanced dictionary decompression prototypes
+build: improved meson recipe, by Shawn Landden (@shawnl)
+build: VS2017 scripts, by @HaydnTrigg
+misc: all /contrib projects fixed
+misc: added /contrib/docker script by @gyscos
+
+v1.3.3
+perf: faster zstd_opt strategy (levels 16-19)
+fix : bug #944 : multithreading with shared ditionary and large data, reported by @gsliepen
+cli : fix : content size written in header by default
+cli : fix : improved LZ4 format support, by @felixhandte
+cli : new : hidden command `-S`, to benchmark multiple files while generating one result per file
+api : fix : support large skippable frames, by @terrelln
+api : fix : streaming interface was adding a useless 3-bytes null block to small frames
+api : change : when setting `pledgedSrcSize`, use `ZSTD_CONTENTSIZE_UNKNOWN` macro value to mean "unknown"
+build: fix : compilation under rhel6 and centos6, reported by @pixelb
+build: added `check` target
+
+v1.3.2
+new : long range mode, using --long command, by Stella Lau (@stellamplau)
+new : ability to generate and decode magicless frames (#591)
+changed : maximum nb of threads reduced to 200, to avoid address space exhaustion in 32-bits mode
+fix : multi-threading compression works with custom allocators
+fix : ZSTD_sizeof_CStream() was over-evaluating memory usage
+fix : a rare compression bug when compression generates very large distances and bunch of other conditions (only possible at --ultra -22)
+fix : 32-bits build can now decode large offsets (levels 21+)
+cli : added LZ4 frame support by default, by Felix Handte (@felixhandte)
+cli : improved --list output
+cli : new : can split input file for dictionary training, using command -B#
+cli : new : clean operation artefact on Ctrl-C interruption
+cli : fix : do not change /dev/null permissions when using command -t with root access, reported by @mike155 (#851)
+cli : fix : write file size in header in multiple-files mode
+api : added macro ZSTD_COMPRESSBOUND() for static allocation
+api : experimental : new advanced decompression API
+api : fix : sizeof_CCtx() used to over-estimate
+build: fix : no-multithread variant compiles without pool.c dependency, reported by Mitchell Blank Jr (@mitchblank) (#819)
+build: better compatibility with reproducible builds, by Bernhard M. Wiedemann (@bmwiedemann) (#818)
+example : added streaming_memory_usage
+license : changed /examples license to BSD + GPLv2
+license : fix a few header files to reflect new license (#825)
+
+v1.3.1
+New license : BSD + GPLv2
+perf: substantially decreased memory usage in Multi-threading mode, thanks to reports by Tino Reichardt (@mcmilk)
+perf: Multi-threading supports up to 256 threads. Cap at 256 when more are requested (#760)
+cli : improved and fixed --list command, by @ib (#772)
+cli : command -vV to list supported formats, by @ib (#771)
+build : fixed binary variants, reported by @svenha (#788)
+build : fix Visual compilation for non x86/x64 targets, reported by Greg Slazinski (@GregSlazinski) (#718)
+API exp : breaking change : ZSTD_getframeHeader() provides more information
+API exp : breaking change : pinned down values of error codes
+doc : fixed huffman example, by Ulrich Kunitz (@ulikunitz)
+new : contrib/adaptive-compression, I/O driven compression strength, by Paul Cruz (@paulcruz74)
+new : contrib/long_distance_matching, statistics by Stella Lau (@stellamplau)
+updated : contrib/linux-kernel, by Nick Terrell (@terrelln)
+
+v1.3.0
+cli : new : `--list` command, by Paul Cruz
+cli : changed : xz/lzma support enabled by default
+cli : changed : `-t *` continue processing list after a decompression error
+API : added : ZSTD_versionString()
+API : promoted to stable status : ZSTD_getFrameContentSize(), by Sean Purcell
+API exp : new advanced API : ZSTD_compress_generic(), ZSTD_CCtx_setParameter()
+API exp : new : API for static or external allocation : ZSTD_initStatic?Ctx()
+API exp : added : ZSTD_decompressBegin_usingDDict(), requested by Guy Riddle (#700)
+API exp : clarified memory estimation / measurement functions.
+API exp : changed : strongest strategy renamed ZSTD_btultra, fastest strategy ZSTD_fast set to 1
+tools : decodecorpus can generate random dictionary-compressed samples, by Paul Cruz
+new : contrib/seekable_format, demo and API, by Sean Purcell
+changed : contrib/linux-kernel, updated version and license, by Nick Terrell
+
+v1.2.0
+cli : changed : Multithreading enabled by default (use target zstd-nomt or HAVE_THREAD=0 to disable)
+cli : new : command -T0 means "detect and use nb of cores", by Sean Purcell
+cli : new : zstdmt symlink hardwired to `zstd -T0`
+cli : new : command --threads=# (#671)
+cli : changed : cover dictionary builder by default, for improved quality, by Nick Terrell
+cli : new : commands --train-cover and --train-legacy, to select dictionary algorithm and parameters
+cli : experimental targets `zstd4` and `xzstd4`, with support for lz4 format, by Sean Purcell
+cli : fix : does not output compressed data on console
+cli : fix : ignore symbolic links unless --force specified,
+API : breaking change : ZSTD_createCDict_advanced(), only use compressionParameters as argument
+API : added : prototypes ZSTD_*_usingCDict_advanced(), for direct control over frameParameters.
+API : improved: ZSTDMT_compressCCtx() reduced memory usage
+API : fix : ZSTDMT_compressCCtx() now provides srcSize in header (#634)
+API : fix : src size stored in frame header is controlled at end of frame
+API : fix : enforced consistent rules for pledgedSrcSize==0 (#641)
+API : fix : error code "GENERIC" replaced by "dstSizeTooSmall" when appropriate
+build: improved cmake script, by @Majlen
+build: enabled Multi-threading support for *BSD, by Baptiste Daroussin
+tools: updated Paramgrill. Command -O# provides best parameters for sample and speed target.
+new : contrib/linux-kernel version, by Nick Terrell
+
+v1.1.4
+cli : new : can compress in *.gz format, using --format=gzip command, by Przemyslaw Skibinski
+cli : new : advanced benchmark command --priority=rt
+cli : fix : write on sparse-enabled file systems in 32-bits mode, by @ds77
+cli : fix : --rm remains silent when input is stdin
+cli : experimental : xzstd, with support for xz/lzma decoding, by Przemyslaw Skibinski
+speed : improved decompression speed in streaming mode for single shot scenarios (+5%)
+memory: DDict (decompression dictionary) memory usage down from 150 KB to 20 KB
+arch: 32-bits variant able to generate and decode very long matches (>32 MB), by Sean Purcell
+API : new : ZSTD_findFrameCompressedSize(), ZSTD_getFrameContentSize(), ZSTD_findDecompressedSize()
+API : changed : dropped support of legacy versions <= v0.3 (can be changed by modifying ZSTD_LEGACY_SUPPORT value)
+build : new: meson build system in contrib/meson, by Dima Krasner
+build : improved cmake script, by @Majlen
+build : added -Wformat-security flag, as recommended by Padraig Brady
+doc : new : educational decoder, by Sean Purcell
+
+v1.1.3
+cli : zstd can decompress .gz files (can be disabled with `make zstd-nogz` or `make HAVE_ZLIB=0`)
+cli : new : experimental target `make zstdmt`, with multi-threading support
+cli : new : improved dictionary builder "cover" (experimental), by Nick Terrell, based on prior work by Giuseppe Ottaviano.
+cli : new : advanced commands for detailed parameters, by Przemyslaw Skibinski
+cli : fix zstdless on Mac OS-X, by Andrew Janke
+cli : fix #232 "compress non-files"
+dictBuilder : improved dictionary generation quality, thanks to Nick Terrell
+API : new : lib/compress/ZSTDMT_compress.h multithreading API (experimental)
+API : new : ZSTD_create?Dict_byReference(), requested by Bartosz Taudul
+API : new : ZDICT_finalizeDictionary()
+API : fix : ZSTD_initCStream_usingCDict() properly writes dictID into frame header, by Gregory Szorc (#511)
+API : fix : all symbols properly exposed in libzstd, by Nick Terrell
+build : support for Solaris target, by Przemyslaw Skibinski
+doc : clarified specification, by Sean Purcell
+
+v1.1.2
+API : streaming : decompression : changed : automatic implicit reset when chain-decoding new frames without init
+API : experimental : added : dictID retrieval functions, and ZSTD_initCStream_srcSize()
+API : zbuff : changed : prototypes now generate deprecation warnings
+lib : improved : faster decompression speed at ultra compression settings and 32-bits mode
+lib : changed : only public ZSTD_ symbols are now exposed
+lib : changed : reduced usage  of stack memory
+lib : fixed : several corner case bugs, by Nick Terrell
+cli : new : gzstd, experimental version able to decode .gz files, by Przemyslaw Skibinski
+cli : new : preserve file attributes
+cli : new : added zstdless and zstdgrep tools
+cli : fixed : status displays total amount decoded, even for file consisting of multiple frames (like pzstd)
+cli : fixed : zstdcat
+zlib_wrapper : added support for gz* functions, by Przemyslaw Skibinski
+install : better compatibility with FreeBSD, by Dimitry Andric
+source tree : changed : zbuff source files moved to lib/deprecated
+
+v1.1.1
+New : command -M#, --memory=, --memlimit=, --memlimit-decompress= to limit allowed memory consumption
+New : doc/zstd_manual.html, by Przemyslaw Skibinski
+Improved : slightly better compression ratio at --ultra levels (>= 20)
+Improved : better memory usage when using streaming compression API, thanks to @Rogier-5 report
+Added : API : ZSTD_initCStream_usingCDict(), ZSTD_initDStream_usingDDict() (experimental section)
+Added : example/multiple_streaming_compression.c
+Changed : zstd_errors.h is now installed within /include (and replaces errors_public.h)
+Updated man page
+Fixed : zstd-small, zstd-compress and zstd-decompress compilation targets
+
+v1.1.0
+New : contrib/pzstd, parallel version of zstd, by Nick Terrell
+added : NetBSD install target (#338)
+Improved : speed for batches of small files
+Improved : speed of zlib wrapper, by Przemyslaw Skibinski
+Changed : libzstd on Windows supports legacy formats, by Christophe Chevalier
+Fixed : CLI -d output to stdout by default when input is stdin (#322)
+Fixed : CLI correctly detects console on Mac OS-X
+Fixed : CLI supports recursive mode `-r` on Mac OS-X
+Fixed : Legacy decoders use unified error codes, reported by benrg (#341), fixed by Przemyslaw Skibinski
+Fixed : compatibility with OpenBSD, reported by Juan Francisco Cantero Hurtado (#319)
+Fixed : compatibility with Hurd, by Przemyslaw Skibinski (#365)
+Fixed : zstd-pgo, reported by octoploid (#329)
+
+v1.0.0
+Change Licensing, all project is now BSD, Copyright Facebook
+Small decompression speed improvement
+API : Streaming API supports legacy format
+API : ZDICT_getDictID(), ZSTD_sizeof_{CCtx, DCtx, CStream, DStream}(), ZSTD_setDStreamParameter()
+CLI supports legacy formats v0.4+
+Fixed : compression fails on certain huge files, reported by Jesse McGrew
+Enhanced documentation, by Przemyslaw Skibinski
+
+v0.8.1
+New streaming API
+Changed : --ultra now enables levels beyond 19
+Changed : -i# now selects benchmark time in second
+Fixed : ZSTD_compress* can now compress > 4 GB in a single pass, reported by Nick Terrell
+Fixed : speed regression on specific patterns (#272)
+Fixed : support for Z_SYNC_FLUSH, by Dmitry Krot (#291)
+Fixed : ICC compilation, by Przemyslaw Skibinski
+
+v0.8.0
+Improved : better speed on clang and gcc -O2, thanks to Eric Biggers
+New : Build on FreeBSD and DragonFly, thanks to JrMarino
+Changed : modified API : ZSTD_compressEnd()
+Fixed : legacy mode with ZSTD_HEAPMODE=0, by Christopher Bergqvist
+Fixed : premature end of frame when zero-sized raw block, reported by Eric Biggers
+Fixed : large dictionaries (> 384 KB), reported by Ilona Papava
+Fixed : checksum correctly checked in single-pass mode
+Fixed : combined --test amd --rm, reported by Andreas M. Nilsson
+Modified : minor compression level adaptations
+Updated : compression format specification to v0.2.0
+changed : zstd.h moved to /lib directory
+
+v0.7.5
+Transition version, supporting decoding of v0.8.x
+
+v0.7.4
+Added : homebrew for Mac, by Daniel Cade
+Added : more examples
+Fixed : segfault when using small dictionaries, reported by Felix Handte
+Modified : default compression level for CLI is now 3
+Updated : specification, to v0.1.1
+
+v0.7.3
+New : compression format specification
+New : `--` separator, stating that all following arguments are file names. Suggested by Chip Turner.
+New : `ZSTD_getDecompressedSize()`
+New : OpenBSD target, by Juan Francisco Cantero Hurtado
+New : `examples` directory
+fixed : dictBuilder using HC levels, reported by Bartosz Taudul
+fixed : legacy support from ZSTD_decompress_usingDDict(), reported by Felix Handte
+fixed : multi-blocks decoding with intermediate uncompressed blocks, reported by Greg Slazinski
+modified : removed "mem.h" and "error_public.h" dependencies from "zstd.h" (experimental section)
+modified : legacy functions no longer need magic number
+
+v0.7.2
+fixed : ZSTD_decompressBlock() using multiple consecutive blocks. Reported by Greg Slazinski.
+fixed : potential segfault on very large files (many gigabytes). Reported by Chip Turner.
+fixed : CLI displays system error message when destination file cannot be created (#231). Reported by Chip Turner.
+
+v0.7.1
+fixed : ZBUFF_compressEnd() called multiple times with too small `dst` buffer, reported by Christophe Chevalier
+fixed : dictBuilder fails if first sample is too small, reported by Руслан Ковалёв
+fixed : corruption issue, reported by cj
+modified : checksum enabled by default in command line mode
+
+v0.7.0
+New : Support for directory compression, using `-r`, thanks to Przemyslaw Skibinski
+New : Command `--rm`, to remove source file after successful de/compression
+New : Visual build scripts, by Christophe Chevalier
+New : Support for Sparse File-systems (do not use space for zero-filled sectors)
+New : Frame checksum support
+New : Support pass-through mode (when using `-df`)
+API : more efficient Dictionary API : `ZSTD_compress_usingCDict()`, `ZSTD_decompress_usingDDict()`
+API : create dictionary files from custom content, by Giuseppe Ottaviano
+API : support for custom malloc/free functions
+New : controllable Dictionary ID
+New : Support for skippable frames
+
+v0.6.1
+New : zlib wrapper API, thanks to Przemyslaw Skibinski
+New : Ability to compile compressor / decompressor separately
+Changed : new lib directory structure
+Fixed : Legacy codec v0.5 compatible with dictionary decompression
+Fixed : Decoder corruption error (#173)
+Fixed : null-string roundtrip (#176)
+New : benchmark mode can select directory as input
+Experimental : midipix support, VMS support
+
+v0.6.0
+Stronger high compression modes, thanks to Przemyslaw Skibinski
+API : ZSTD_getFrameParams() provides size of decompressed content
+New : highest compression modes require `--ultra` command to fully unleash their capacity
+Fixed : zstd cli return error code > 0 and removes dst file artifact when decompression fails, thanks to Chip Turner
+
+v0.5.1
+New : Optimal parsing => Very high compression modes, thanks to Przemyslaw Skibinski
+Changed : Dictionary builder integrated into libzstd and zstd cli
+Changed (!) : zstd cli now uses "multiple input files" as default mode. See `zstd -h`.
+Fix : high compression modes for big-endian platforms
+New : zstd cli : `-t` | `--test` command
+
+v0.5.0
+New : dictionary builder utility
+Changed : streaming & dictionary API
+Improved : better compression of small data
+
+v0.4.7
+Improved : small compression speed improvement in HC mode
+Changed : `zstd_decompress.c` has ZSTD_LEGACY_SUPPORT to 0 by default
+fix : bt search bug
+
+v0.4.6
+fix : fast compression mode on Windows
+New : cmake configuration file, thanks to Artyom Dymchenko
+Improved : high compression mode on repetitive data
+New : block-level API
+New : ZSTD_duplicateCCtx()
+
+v0.4.5
+new : -m/--multiple : compress/decompress multiple files
+
+v0.4.4
+Fixed : high compression modes for Windows 32 bits
+new : external dictionary API extended to buffered mode and accessible through command line
+new : windows DLL project, thanks to Christophe Chevalier
+
+v0.4.3 :
+new : external dictionary API
+new : zstd-frugal
+
+v0.4.2 :
+Generic minor improvements for small blocks
+Fixed : big-endian compatibility, by Peter Harris (#85)
+
+v0.4.1
+Fixed : ZSTD_LEGACY_SUPPORT=0 build mode (reported by Luben)
+removed `zstd.c`
+
+v0.4.0
+Command line utility compatible with high compression levels
+Removed zstdhc => merged into zstd
+Added : ZBUFF API (see zstd_buffered.h)
+Rolling buffer support
+
+v0.3.6
+small blocks params
+
+v0.3.5
+minor generic compression improvements
+
+v0.3.4
+Faster fast cLevels
+
+v0.3.3
+Small compression ratio improvement
+
+v0.3.2
+Fixed Visual Studio
+
+v0.3.1 :
+Small compression ratio improvement
+
+v0.3
+HC mode : compression levels 2-26
+
+v0.2.2
+Fix : Visual Studio 2013 & 2015 release compilation, by Christophe Chevalier
+
+v0.2.1
+Fix : Read errors, advanced fuzzer tests, by Hanno Böck
+
+v0.2.0
+**Breaking format change**
+Faster decompression speed
+Can still decode v0.1 format
+
+v0.1.3
+fix uninitialization warning, reported by Evan Nemerson
+
+v0.1.2
+frame concatenation support
+
+v0.1.1
+fix compression bug
+detects write-flush errors
+
+v0.1.0
+first release

Copied: vendor/zstd/1.4.4/Makefile (from r354371, vendor/zstd/dist/Makefile)
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ vendor/zstd/1.4.4/Makefile	Wed Nov  6 06:43:13 2019	(r354372, copy of r354371, vendor/zstd/dist/Makefile)
@@ -0,0 +1,392 @@
+# ################################################################
+# Copyright (c) 2015-present, Yann Collet, Facebook, Inc.
+# All rights reserved.
+#
+# This source code is licensed under both the BSD-style license (found in the
+# LICENSE file in the root directory of this source tree) and the GPLv2 (found
+# in the COPYING file in the root directory of this source tree).
+# ################################################################
+
+PRGDIR   = programs
+ZSTDDIR  = lib
+BUILDIR  = build
+ZWRAPDIR = zlibWrapper
+TESTDIR  = tests
+FUZZDIR  = $(TESTDIR)/fuzz
+
+# Define nul output
+VOID = /dev/null
+
+ifneq (,$(filter Windows%,$(OS)))
+EXT =.exe
+else
+EXT =
+endif
+
+## default: Build lib-release and zstd-release
+.PHONY: default
+default: lib-release zstd-release
+
+.PHONY: all
+all: allmost examples manual contrib
+
+.PHONY: allmost
+allmost: allzstd zlibwrapper
+
+# skip zwrapper, can't build that on alternate architectures without the proper zlib installed
+.PHONY: allzstd
+allzstd: lib
+	$(MAKE) -C $(PRGDIR) all
+	$(MAKE) -C $(TESTDIR) all
+
+.PHONY: all32
+all32:
+	$(MAKE) -C $(PRGDIR) zstd32
+	$(MAKE) -C $(TESTDIR) all32
+
+.PHONY: lib lib-release libzstd.a
+lib lib-release :
+	@$(MAKE) -C $(ZSTDDIR) $@
+
+.PHONY: zstd zstd-release
+zstd zstd-release:
+	@$(MAKE) -C $(PRGDIR) $@
+	cp $(PRGDIR)/zstd$(EXT) .
+
+.PHONY: zstdmt
+zstdmt:
+	@$(MAKE) -C $(PRGDIR) $@
+	cp $(PRGDIR)/zstd$(EXT) ./zstdmt$(EXT)
+
+.PHONY: zlibwrapper
+zlibwrapper: lib
+	$(MAKE) -C $(ZWRAPDIR) all
+
+## test: run long-duration tests
+.PHONY: test
+DEBUGLEVEL ?= 1
+test: MOREFLAGS += -g -DDEBUGLEVEL=$(DEBUGLEVEL) -Werror
+test:
+	MOREFLAGS="$(MOREFLAGS)" $(MAKE) -j -C $(PRGDIR) allVariants
+	$(MAKE) -C $(TESTDIR) $@
+	ZSTD=../../programs/zstd $(MAKE) -C doc/educational_decoder test
+
+## shortest: same as `make check`
+.PHONY: shortest
+shortest:
+	$(MAKE) -C $(TESTDIR) $@
+
+## check: run basic tests for `zstd` cli
+.PHONY: check
+check: shortest
+
+## examples: build all examples in `/examples` directory
+.PHONY: examples
+examples: lib
+	CPPFLAGS=-I../lib LDFLAGS=-L../lib $(MAKE) -C examples/ all
+
+## manual: generate API documentation in html format
+.PHONY: manual
+manual:
+	$(MAKE) -C contrib/gen_html $@
+
+## man: generate man page
+.PHONY: man
+man:
+	$(MAKE) -C programs $@
+
+## contrib: build all supported projects in `/contrib` directory
+.PHONY: contrib
+contrib: lib
+	$(MAKE) -C contrib/pzstd all
+	$(MAKE) -C contrib/seekable_format/examples all
+	$(MAKE) -C contrib/largeNbDicts all
+	cd contrib/single_file_decoder/ ; ./build_test.sh
+
+.PHONY: cleanTabs
+cleanTabs:
+	cd contrib; ./cleanTabs
+
+.PHONY: clean
+clean:
+	@$(MAKE) -C $(ZSTDDIR) $@ > $(VOID)
+	@$(MAKE) -C $(PRGDIR) $@ > $(VOID)
+	@$(MAKE) -C $(TESTDIR) $@ > $(VOID)
+	@$(MAKE) -C $(ZWRAPDIR) $@ > $(VOID)
+	@$(MAKE) -C examples/ $@ > $(VOID)
+	@$(MAKE) -C contrib/gen_html $@ > $(VOID)
+	@$(MAKE) -C contrib/pzstd $@ > $(VOID)
+	@$(MAKE) -C contrib/seekable_format/examples $@ > $(VOID)
+	@$(MAKE) -C contrib/largeNbDicts $@ > $(VOID)
+	@$(RM) zstd$(EXT) zstdmt$(EXT) tmp*
+	@$(RM) -r lz4
+	@echo Cleaning completed
+
+#------------------------------------------------------------------------------
+# make install is validated only for Linux, macOS, Hurd and some BSD targets
+#------------------------------------------------------------------------------
+ifneq (,$(filter $(shell uname),Linux Darwin GNU/kFreeBSD GNU OpenBSD FreeBSD DragonFly NetBSD MSYS_NT Haiku))
+
+HOST_OS = POSIX
+CMAKE_PARAMS = -DZSTD_BUILD_CONTRIB:BOOL=ON -DZSTD_BUILD_STATIC:BOOL=ON -DZSTD_BUILD_TESTS:BOOL=ON -DZSTD_ZLIB_SUPPORT:BOOL=ON -DZSTD_LZMA_SUPPORT:BOOL=ON -DCMAKE_BUILD_TYPE=Release
+
+HAVE_COLORNEVER = $(shell echo a | egrep --color=never a > /dev/null 2> /dev/null && echo 1 || echo 0)
+EGREP_OPTIONS ?=
+ifeq ($HAVE_COLORNEVER, 1)
+EGREP_OPTIONS += --color=never
+endif
+EGREP = egrep $(EGREP_OPTIONS)
+
+# Print a two column output of targets and their description. To add a target description, put a
+# comment in the Makefile with the format "## <TARGET>: <DESCRIPTION>".  For example:
+#
+## list: Print all targets and their descriptions (if provided)
+.PHONY: list
+list:
+	@TARGETS=$$($(MAKE) -pRrq -f $(lastword $(MAKEFILE_LIST)) : 2>/dev/null \
+		| awk -v RS= -F: '/^# File/,/^# Finished Make data base/ {if ($$1 !~ "^[#.]") {print $$1}}' \
+		| $(EGREP) -v  -e '^[^[:alnum:]]' | sort); \
+	{ \
+	    printf "Target Name\tDescription\n"; \
+	    printf "%0.s-" {1..16}; printf "\t"; printf "%0.s-" {1..40}; printf "\n"; \
+	    for target in $$TARGETS; do \
+	        line=$$($(EGREP) "^##[[:space:]]+$$target:" $(lastword $(MAKEFILE_LIST))); \
+	        description=$$(echo $$line | awk '{i=index($$0,":"); print substr($$0,i+1)}' | xargs); \
+	        printf "$$target\t$$description\n"; \
+	    done \
+	} | column -t -s $$'\t'
+
+.PHONY: install armtest usan asan uasan
+install:
+	@$(MAKE) -C $(ZSTDDIR) $@
+	@$(MAKE) -C $(PRGDIR) $@
+
+.PHONY: uninstall
+uninstall:
+	@$(MAKE) -C $(ZSTDDIR) $@
+	@$(MAKE) -C $(PRGDIR) $@
+
+.PHONY: travis-install
+travis-install:
+	$(MAKE) install PREFIX=~/install_test_dir
+
+.PHONY: gcc5build
+gcc5build: clean
+	gcc-5 -v
+	CC=gcc-5 $(MAKE) all MOREFLAGS="-Werror"
+
+.PHONY: gcc6build
+gcc6build: clean
+	gcc-6 -v
+	CC=gcc-6 $(MAKE) all MOREFLAGS="-Werror"
+
+.PHONY: gcc7build
+gcc7build: clean
+	gcc-7 -v
+	CC=gcc-7 $(MAKE) all MOREFLAGS="-Werror"
+
+.PHONY: clangbuild
+clangbuild: clean
+	clang -v
+	CXX=clang++ CC=clang CFLAGS="-Werror -Wconversion -Wno-sign-conversion -Wdocumentation" $(MAKE) all
+
+m32build: clean
+	gcc -v
+	$(MAKE) all32
+
+armbuild: clean
+	CC=arm-linux-gnueabi-gcc CFLAGS="-Werror" $(MAKE) allzstd
+
+aarch64build: clean
+	CC=aarch64-linux-gnu-gcc CFLAGS="-Werror" $(MAKE) allzstd
+
+ppcbuild: clean
+	CC=powerpc-linux-gnu-gcc CFLAGS="-m32 -Wno-attributes -Werror" $(MAKE) allzstd
+
+ppc64build: clean
+	CC=powerpc-linux-gnu-gcc CFLAGS="-m64 -Werror" $(MAKE) allzstd
+
+armfuzz: clean
+	CC=arm-linux-gnueabi-gcc QEMU_SYS=qemu-arm-static MOREFLAGS="-static" FUZZER_FLAGS=--no-big-tests $(MAKE) -C $(TESTDIR) fuzztest
+
+aarch64fuzz: clean
+	ld -v
+	CC=aarch64-linux-gnu-gcc QEMU_SYS=qemu-aarch64-static MOREFLAGS="-static" FUZZER_FLAGS=--no-big-tests $(MAKE) -C $(TESTDIR) fuzztest
+
+ppcfuzz: clean
+	CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc-static MOREFLAGS="-static" FUZZER_FLAGS=--no-big-tests $(MAKE) -C $(TESTDIR) fuzztest
+
+ppc64fuzz: clean
+	CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc64-static MOREFLAGS="-m64 -static" FUZZER_FLAGS=--no-big-tests $(MAKE) -C $(TESTDIR) fuzztest
+
+.PHONY: cxxtest
+cxxtest: CXXFLAGS += -Wall -Wextra -Wundef -Wshadow -Wcast-align -Werror
+cxxtest: clean
+	$(MAKE) -C $(PRGDIR) all CC="$(CXX) -Wno-deprecated" CFLAGS="$(CXXFLAGS)"   # adding -Wno-deprecated to avoid clang++ warning on dealing with C files directly
+
+gcc5test: clean
+	gcc-5 -v
+	$(MAKE) all CC=gcc-5 MOREFLAGS="-Werror"
+
+gcc6test: clean
+	gcc-6 -v
+	$(MAKE) all CC=gcc-6 MOREFLAGS="-Werror"
+
+armtest: clean
+	$(MAKE) -C $(TESTDIR) datagen   # use native, faster
+	$(MAKE) -C $(TESTDIR) test CC=arm-linux-gnueabi-gcc QEMU_SYS=qemu-arm-static ZSTDRTTEST= MOREFLAGS="-Werror -static" FUZZER_FLAGS=--no-big-tests
+
+aarch64test:
+	$(MAKE) -C $(TESTDIR) datagen   # use native, faster
+	$(MAKE) -C $(TESTDIR) test CC=aarch64-linux-gnu-gcc QEMU_SYS=qemu-aarch64-static ZSTDRTTEST= MOREFLAGS="-Werror -static" FUZZER_FLAGS=--no-big-tests
+
+ppctest: clean
+	$(MAKE) -C $(TESTDIR) datagen   # use native, faster
+	$(MAKE) -C $(TESTDIR) test CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc-static ZSTDRTTEST= MOREFLAGS="-Werror -Wno-attributes -static" FUZZER_FLAGS=--no-big-tests
+
+ppc64test: clean
+	$(MAKE) -C $(TESTDIR) datagen   # use native, faster
+	$(MAKE) -C $(TESTDIR) test CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc64-static ZSTDRTTEST= MOREFLAGS="-m64 -static" FUZZER_FLAGS=--no-big-tests
+
+arm-ppc-compilation:
+	$(MAKE) -C $(PRGDIR) clean zstd CC=arm-linux-gnueabi-gcc QEMU_SYS=qemu-arm-static ZSTDRTTEST= MOREFLAGS="-Werror -static"
+	$(MAKE) -C $(PRGDIR) clean zstd CC=aarch64-linux-gnu-gcc QEMU_SYS=qemu-aarch64-static ZSTDRTTEST= MOREFLAGS="-Werror -static"
+	$(MAKE) -C $(PRGDIR) clean zstd CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc-static ZSTDRTTEST= MOREFLAGS="-Werror -Wno-attributes -static"
+	$(MAKE) -C $(PRGDIR) clean zstd CC=powerpc-linux-gnu-gcc QEMU_SYS=qemu-ppc64-static ZSTDRTTEST= MOREFLAGS="-m64 -static"
+
+regressiontest:
+	$(MAKE) -C $(FUZZDIR) regressiontest
+
+uasanregressiontest:
+	$(MAKE) -C $(FUZZDIR) regressiontest CC=clang CXX=clang++ CFLAGS="-O3 -fsanitize=address,undefined" CXXFLAGS="-O3 -fsanitize=address,undefined"
+
+msanregressiontest:
+	$(MAKE) -C $(FUZZDIR) regressiontest CC=clang CXX=clang++ CFLAGS="-O3 -fsanitize=memory" CXXFLAGS="-O3 -fsanitize=memory"
+
+# run UBsan with -fsanitize-recover=signed-integer-overflow
+# due to a bug in UBsan when doing pointer subtraction
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63303
+
+usan: clean
+	$(MAKE) test CC=clang MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize-recover=signed-integer-overflow -fsanitize=undefined -Werror"
+
+asan: clean
+	$(MAKE) test CC=clang MOREFLAGS="-g -fsanitize=address -Werror"
+
+asan-%: clean
+	LDFLAGS=-fuse-ld=gold MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize=address -Werror" $(MAKE) -C $(TESTDIR) $*
+
+msan: clean
+	$(MAKE) test CC=clang MOREFLAGS="-g -fsanitize=memory -fno-omit-frame-pointer -Werror" HAVE_LZMA=0   # datagen.c fails this test for no obvious reason
+
+msan-%: clean
+	LDFLAGS=-fuse-ld=gold MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize=memory -fno-omit-frame-pointer -Werror" FUZZER_FLAGS=--no-big-tests $(MAKE) -C $(TESTDIR) HAVE_LZMA=0 $*
+
+asan32: clean
+	$(MAKE) -C $(TESTDIR) test32 CC=clang MOREFLAGS="-g -fsanitize=address"
+
+uasan: clean
+	$(MAKE) test CC=clang MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize-recover=signed-integer-overflow -fsanitize=address,undefined -Werror"
+
+uasan-%: clean
+	LDFLAGS=-fuse-ld=gold MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize-recover=signed-integer-overflow -fsanitize=address,undefined -Werror" $(MAKE) -C $(TESTDIR) $*
+
+tsan-%: clean
+	LDFLAGS=-fuse-ld=gold MOREFLAGS="-g -fno-sanitize-recover=all -fsanitize=thread -Werror" $(MAKE) -C $(TESTDIR) $* FUZZER_FLAGS=--no-big-tests
+
+apt-install:
+	sudo apt-get -yq --no-install-suggests --no-install-recommends --force-yes install $(APT_PACKAGES)
+
+apt-add-repo:
+	sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
+	sudo apt-get update -y -qq
+
+ppcinstall:
+	APT_PACKAGES="qemu-system-ppc qemu-user-static gcc-powerpc-linux-gnu" $(MAKE) apt-install
+
+arminstall:
+	APT_PACKAGES="qemu-system-arm qemu-user-static gcc-arm-linux-gnueabi libc6-dev-armel-cross gcc-aarch64-linux-gnu libc6-dev-arm64-cross" $(MAKE) apt-install
+
+valgrindinstall:
+	APT_PACKAGES="valgrind" $(MAKE) apt-install
+
+libc6install:
+	APT_PACKAGES="libc6-dev-i386 gcc-multilib" $(MAKE) apt-install
+
+gcc6install: apt-add-repo
+	APT_PACKAGES="libc6-dev-i386 gcc-multilib gcc-6 gcc-6-multilib" $(MAKE) apt-install
+
+gcc7install: apt-add-repo
+	APT_PACKAGES="libc6-dev-i386 gcc-multilib gcc-7 gcc-7-multilib" $(MAKE) apt-install
+
+gcc8install: apt-add-repo
+	APT_PACKAGES="libc6-dev-i386 gcc-multilib gcc-8 gcc-8-multilib" $(MAKE) apt-install
+
+gpp6install: apt-add-repo
+	APT_PACKAGES="libc6-dev-i386 g++-multilib gcc-6 g++-6 g++-6-multilib" $(MAKE) apt-install
+
+clang38install:
+	APT_PACKAGES="clang-3.8" $(MAKE) apt-install
+
+# Ubuntu 14.04 ships a too-old lz4
+lz4install:
+	[ -e lz4 ] || git clone https://github.com/lz4/lz4 && sudo $(MAKE) -C lz4 install
+
+endif
+
+
+ifneq (,$(filter MSYS%,$(shell uname)))
+HOST_OS = MSYS
+CMAKE_PARAMS = -G"MSYS Makefiles" -DZSTD_MULTITHREAD_SUPPORT:BOOL=OFF -DZSTD_BUILD_STATIC:BOOL=ON -DZSTD_BUILD_TESTS:BOOL=ON
+endif
+
+
+#------------------------------------------------------------------------
+# target specific tests
+#------------------------------------------------------------------------
+ifneq (,$(filter $(HOST_OS),MSYS POSIX))
+cmakebuild:
+	cmake --version
+	$(RM) -r $(BUILDIR)/cmake/build
+	mkdir $(BUILDIR)/cmake/build
+	cd $(BUILDIR)/cmake/build ; cmake -DCMAKE_INSTALL_PREFIX:PATH=~/install_test_dir $(CMAKE_PARAMS) .. ; $(MAKE) install ; $(MAKE) uninstall
+
+c90build: clean
+	$(CC) -v
+	CFLAGS="-std=c90 -Werror" $(MAKE) allmost  # will fail, due to missing support for `long long`
+
+gnu90build: clean
+	$(CC) -v
+	CFLAGS="-std=gnu90 -Werror" $(MAKE) allmost
+
+c99build: clean
+	$(CC) -v
+	CFLAGS="-std=c99 -Werror" $(MAKE) allmost
+
+gnu99build: clean
+	$(CC) -v
+	CFLAGS="-std=gnu99 -Werror" $(MAKE) allmost
+
+c11build: clean
+	$(CC) -v
+	CFLAGS="-std=c11 -Werror" $(MAKE) allmost
+
+bmix64build: clean
+	$(CC) -v
+	CFLAGS="-O3 -mbmi -Werror" $(MAKE) -C $(TESTDIR) test
+
+bmix32build: clean
+	$(CC) -v
+	CFLAGS="-O3 -mbmi -mx32 -Werror" $(MAKE) -C $(TESTDIR) test
+
+bmi32build: clean
+	$(CC) -v
+	CFLAGS="-O3 -mbmi -m32 -Werror" $(MAKE) -C $(TESTDIR) test
+
+# static analyzer test uses clang's scan-build
+# does not analyze zlibWrapper, due to detected issues in zlib source code
+staticAnalyze: SCANBUILD ?= scan-build
+staticAnalyze:
+	$(CC) -v
+	CC=$(CC) CPPFLAGS=-g $(SCANBUILD) --status-bugs -v $(MAKE) allzstd examples contrib
+endif

Copied: vendor/zstd/1.4.4/README.md (from r354371, vendor/zstd/dist/README.md)
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ vendor/zstd/1.4.4/README.md	Wed Nov  6 06:43:13 2019	(r354372, copy of r354371, vendor/zstd/dist/README.md)
@@ -0,0 +1,173 @@
+<p align="center"><img src="https://raw.githubusercontent.com/facebook/zstd/dev/doc/images/zstd_logo86.png" alt="Zstandard"></p>
+
+__Zstandard__, or `zstd` as short version, is a fast lossless compression algorithm,
+targeting real-time compression scenarios at zlib-level and better compression ratios.
+It's backed by a very fast entropy stage, provided by [Huff0 and FSE library](https://github.com/Cyan4973/FiniteStateEntropy).
+
+The project is provided as an open-source dual [BSD](LICENSE) and [GPLv2](COPYING) licensed **C** library,
+and a command line utility producing and decoding `.zst`, `.gz`, `.xz` and `.lz4` files.
+Should your project require another programming language,
+a list of known ports and bindings is provided on [Zstandard homepage](http://www.zstd.net/#other-languages).
+
+**Development branch status:**
+
+[![Build Status][travisDevBadge]][travisLink]
+[![Build status][AppveyorDevBadge]][AppveyorLink]
+[![Build status][CircleDevBadge]][CircleLink]
+[![Build status][CirrusDevBadge]][CirrusLink]
+[![Fuzzing Status][OSSFuzzBadge]][OSSFuzzLink]
+
+[travisDevBadge]: https://travis-ci.org/facebook/zstd.svg?branch=dev "Continuous Integration test suite"
+[travisLink]: https://travis-ci.org/facebook/zstd
+[AppveyorDevBadge]: https://ci.appveyor.com/api/projects/status/xt38wbdxjk5mrbem/branch/dev?svg=true "Windows test suite"
+[AppveyorLink]: https://ci.appveyor.com/project/YannCollet/zstd-p0yf0
+[CircleDevBadge]: https://circleci.com/gh/facebook/zstd/tree/dev.svg?style=shield "Short test suite"
+[CircleLink]: https://circleci.com/gh/facebook/zstd
+[CirrusDevBadge]: https://api.cirrus-ci.com/github/facebook/zstd.svg?branch=dev
+[CirrusLink]: https://cirrus-ci.com/github/facebook/zstd
+[OSSFuzzBadge]: https://oss-fuzz-build-logs.storage.googleapis.com/badges/zstd.svg
+[OSSFuzzLink]: https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:zstd
+
+## Benchmarks
+
+For reference, several fast compression algorithms were tested and compared
+on a server running Arch Linux (`Linux version 5.0.5-arch1-1`),
+with a Core i9-9900K CPU @ 5.0GHz,
+using [lzbench], an open-source in-memory benchmark by @inikep
+compiled with [gcc] 8.2.1,
+on the [Silesia compression corpus].
+
+[lzbench]: https://github.com/inikep/lzbench
+[Silesia compression corpus]: http://sun.aei.polsl.pl/~sdeor/index.php?page=silesia
+[gcc]: https://gcc.gnu.org/
+
+| Compressor name         | Ratio | Compression| Decompress.|
+| ---------------         | ------| -----------| ---------- |
+| **zstd 1.4.0 -1**       | 2.884 |   530 MB/s |  1360 MB/s |
+| zlib 1.2.11 -1          | 2.743 |   110 MB/s |   440 MB/s |
+| brotli 1.0.7 -0         | 2.701 |   430 MB/s |   470 MB/s |
+| quicklz 1.5.0 -1        | 2.238 |   600 MB/s |   800 MB/s |
+| lzo1x 2.09 -1           | 2.106 |   680 MB/s |   950 MB/s |
+| lz4 1.8.3               | 2.101 |   800 MB/s |  4220 MB/s |
+| snappy 1.1.4            | 2.073 |   580 MB/s |  2020 MB/s |
+| lzf 3.6 -1              | 2.077 |   440 MB/s |   930 MB/s |
+
+[zlib]: http://www.zlib.net/
+[LZ4]: http://www.lz4.org/
+
+Zstd can also offer stronger compression ratios at the cost of compression speed.
+Speed vs Compression trade-off is configurable by small increments.
+Decompression speed is preserved and remains roughly the same at all settings,
+a property shared by most LZ compression algorithms, such as [zlib] or lzma.
+
+The following tests were run
+on a server running Linux Debian (`Linux version 4.14.0-3-amd64`)
+with a Core i7-6700K CPU @ 4.0GHz,
+using [lzbench], an open-source in-memory benchmark by @inikep
+compiled with [gcc] 7.3.0,
+on the [Silesia compression corpus].
+
+Compression Speed vs Ratio | Decompression Speed
+---------------------------|--------------------

*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***



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