- update to 1.23:
* Fixed bug introduced in 1.20 where incorrect checksums could
be calculated if libdeflate was compiled with clang at -O0
and run on a CPU supporting AVX512.
* Fixed build error when using -mno-evex512 with clang 18+ or
gcc 14+.
* Increased the minimum CMake version to 3.10.
* Further optimized the x86 CRC code.
* The CMake-based build system now implements a workaround for
gcc being paired with a too-old binutils version.
This can prevent build errors.
OBS-URL: https://build.opensuse.org/request/show/1265498
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/libdeflate?expand=0&rev=15
* Fixed bug introduced in 1.20 where incorrect checksums could
be calculated if libdeflate was compiled with clang at -O0
and run on a CPU supporting AVX512.
* Fixed build error when using -mno-evex512 with clang 18+ or
gcc 14+.
* Increased the minimum CMake version to 3.10.
* Further optimized the x86 CRC code.
* The CMake-based build system now implements a workaround for
gcc being paired with a too-old binutils version.
This can prevent build errors.
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/libdeflate?expand=0&rev=30
- update to 1.21:
* Fixed build error on x86 with gcc 8.1 and gcc 8.2.
* Fixed build error on x86 when gcc 11 is paired with a
binutils version that doesn't support AVX-VNNI
e.g. as it is on RHEL 9.
* Fixed build error on arm64 with gcc 6.
* Fixed build error on arm64 with gcc 13.1 and later with some
-mcpu options.
* Enabled detection of dotprod support in Windows ARM64 builds.
OBS-URL: https://build.opensuse.org/request/show/1194548
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/libdeflate?expand=0&rev=14
* Fixed build error on x86 with gcc 8.1 and gcc 8.2.
* Fixed build error on x86 when gcc 11 is paired with a
binutils version that doesn't support AVX-VNNI
e.g. as it is on RHEL 9.
* Fixed build error on arm64 with gcc 6.
* Fixed build error on arm64 with gcc 13.1 and later with some
-mcpu options.
* Enabled detection of dotprod support in Windows ARM64 builds.
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/libdeflate?expand=0&rev=28
- update to 1.20:
* Improved CRC-32 performance on recent x86 CPUs by adding
* VPCLMULQDQ-accelerated implementations using 256-bit and
512-bit vectors.
* Improved Adler-32 performance on recent x86 CPUs by adding
* VNNI-accelerated implementations using 256-bit and 512-bit
vectors.
* Improved CRC-32 and Adler-32 performance on short inputs.
* Optimized the portable implementation of Adler-32.
* Added some basic optimizations for RISC-V.
* Dropped support for gcc versions older than v4.9 (released in
2014) and clang versions older than v3.9 (released in 2016).
* Dropped support for CRC-32 acceleration on 32-bit ARM using
the ARMv8 pmull or crc32 instructions.
OBS-URL: https://build.opensuse.org/request/show/1164440
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/libdeflate?expand=0&rev=26
- update to 1.19:
* Added new functions `libdeflate_alloc_compressor_ex()` and
`libdeflate_alloc_decompressor_ex()`. These functions allow
specifying a custom memory allocator on a per-compressor basis.
* libdeflate now always generates Huffman codes with at least 2
codewords. This fixes a compatibility issue where Windows
Explorer's ZIP unpacker could not decompress DEFLATE streams
created by libdeflate. libdeflate's behavior was
* allowed by the DEFLATE RFC, but not all software was okay
with it. In rare cases, compression ratios can be slightly
reduced by this change.
* Disabled the use of some compiler intrinsics on MSVC versions
where they don't work correctly.
* libdeflate can now compress up to the exact size of the
output buffer.
* Slightly improved compression performance at levels 1-9.
* Improved the compression ratio of very short inputs.
building with Clang 15 or later (x86), or with Clang 16
* Fixed a couple macOS compatibility issues with the gzip program.
* Cleaned up a few things in the compression code.
- Add workaround build fail due issue in dwz by deleting
libdeflate-gunzip and replace with symlink libdeflate-gzip to
OBS-URL: https://build.opensuse.org/request/show/1111738
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/libdeflate?expand=0&rev=20
- update to 1.18:
* Fixed a bug where the build type didn't default to "Release"
when using CMake 3.10 or earlier.
* Fixed a bug where some optimized code wasn't used when
building with Clang 15 or later (x86), or with Clang 16
or later (aarch64).
* Fixed build errors with some architecture and compiler
combos:
* aarch64 with Clang 16
* armv6kz or armv7e-m with gcc
* armhf with gcc (on Debian only)
OBS-URL: https://build.opensuse.org/request/show/1083366
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/libdeflate?expand=0&rev=18
- update to 1.17:
* Improved the compression ratio at levels 10-12 slightly, mainly
levels 11-12. Some inputs (such as certain PNG files) see much
improved compression ratios. As a trade-off, compressing at
levels 11-12 is now about 5-20% slower.
* For consistency with zlib, the decompressor now returns an error
on some invalid inputs that were accepted before.
* Fixed a build error on arm64 with gcc with certain target CPUs.
* Fixed a build error in programs/gzip.c with uClibc.
OBS-URL: https://build.opensuse.org/request/show/1060568
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/libdeflate?expand=0&rev=16
- update to 1.12:
* Improved CRC-32 performance on short inputs on x86 and ARM.
* Improved CRC-32 performance on Apple Silicon Macs by using a 12-way pmull
implementation. Performance on large inputs on M1 is now about 67 GB/s,
compared to 8 GB/s before, or 31 GB/s with the Apple-provided zlib.
* Improved CRC-32 performance on some other ARM CPUs by reworking the code so
that multiple crc32 instructions can be issued in parallel.
* Improved CRC-32 performance on some x86 CPUs by increasing the stride length
of the pclmul implementation.
* Improved Adler-32 performance on some x86 CPUs by optimizing the AVX-2
implementation. E.g., performance on Zen 1 improved from 19 to 30 GB/s, and
on Ice Lake from 35 to 41 GB/s (if the AVX-512 implementation is excluded).
* Removed the AVX-512 implementation of Adler-32 to avoid CPU frequency
downclocking, and because the AVX-2 implementation was made faster.
* Improved Adler-32 performance on some ARM CPUs by optimizing the NEON
* Improved compression performance slightly.
* Detect arm64 CPU features on Apple platforms, which should improve
performance in some areas such as CRC-32 computation.
* The included `gzip` and `gunzip` programs now support the `-q` option.
* The included `gunzip` program now passes through non-gzip data when both
the `-f` and `-c` options are used.
OBS-URL: https://build.opensuse.org/request/show/988696
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/libdeflate?expand=0&rev=8
- update to 1.9:
* Heuristics were implemented which significantly improve the compression
ratio on data where short matches aren't useful, such as DNA sequencing
data. This applies to all compression levels, but primarily to levels 1-9.
* Levels 1 was made much faster, though it often compresses slightly worse
than before (but still better than zlib).
* Levels 8-9 were also made faster, though they often compress slightly worse
than before (but still better than zlib). On some data, levels 8-9 are much
faster and compress much better than before; this change addressed an issue
where levels 8-9 did poorly on certain files. The algorithm used by levels
8-9 is now more similar to that of levels 6-7 than to that of levels 10-12.
* Levels 2-3, 7, and 10-12 were strengthened slightly.
* Levels 4-6 were also strengthened slightly, but some of this improvement was
traded off to speed them up slightly as well.
* Levels 1-9 had their per-compressor memory usage greatly reduced.
* `make install` will now install a pkg-config file for libdeflate.
* The Makefile now supports the `DISABLE_SHARED` parameter to disable building
the shared library.
OBS-URL: https://build.opensuse.org/request/show/948511
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/libdeflate?expand=0&rev=6
