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Diffstat (limited to 'src/Common/lzma/lzma-history.txt')
| -rw-r--r-- | src/Common/lzma/lzma-history.txt | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/Common/lzma/lzma-history.txt b/src/Common/lzma/lzma-history.txt index 0963c7bf..a151c4b9 100644 --- a/src/Common/lzma/lzma-history.txt +++ b/src/Common/lzma/lzma-history.txt @@ -1,6 +1,46 @@ HISTORY of the LZMA SDK ----------------------- +23.01 2023-06-20 +------------------------- +- 7-Zip now can use new ARM64 filter for compression to 7z and xz archives. + ARM64 filter can increase compression ratio for data containing executable + files compiled for ARM64 (AArch64) architecture. + Also 7-Zip now parses executable files (that have exe and dll filename extensions) + before compressing, and it selects appropriate filter for each parsed file: + - BCJ or BCJ2 filter for x86 executable files, + - ARM64 filter for ARM64 executable files. + Previous versions by default used x86 filter BCJ or BCJ2 for all exe/dll files. +- Default section size for BCJ2 filter was changed from 64 MiB to 240 MiB. + It can increase compression ratio for executable files larger than 64 MiB. +- Some optimizations in filters code: BCJ, BCJ2, Swap* and opthers. +- If 7-Zip uses BCJ2 filter for big datasets compressing, it can use additional temp + files in system's TEMP folder. 7-Zip uses temp file for additional compressed + data stream, if size of such compressed stream is larger than predefined limit: + 16 MiB in 32-bit version, 4 GiB in 64-bit version. +- When new 7-Zip creates multivolume archive, 7-Zip keeps in open state + only volumes that still can be changed. Previous versions kept all volumes + in open state until the end of the archive creation. +- 7-Zip for Linux and macOS now can reduce the number of simultaneously open files, + when 7-Zip opens, extracts or creates multivolume archive. It allows to avoid + the failures for cases with big number of volumes, bacause there is a limitation + for number of open files allowed for a single program in Linux and macOS. +- Some bugs were fixed. +- Source code changes: +- All external macros for compiling C/C++ code of 7-Zip now have Z7_ prefix. +- 7-Zip COM interfaces now use new macros that allow to declare and implement COM interface. +- The code has been modified to compile with the maximum diagnostic warning level: + -Wall in MSVC and -Weverything in CLANG. + And some warning types are disabled in 2 files: + - C/Compiler.h for C/C++ code warnings. + - CPP/Common/Common.h for C++ code warnings. +- Linux/macOS versions of 7-Zip: IUnknown interface in new code doesn't use + virtual destructor that was used in previous 7-Zip and p7zip: + // virtual ~IUnknown() {} + So 7-Zip's dynamically linked shared libraries (codecs) are not compatible + between new 7-Zip for Linux/macOS and old 7-Zip (and p7zip). + + 21.07 2021-12-26 ------------------------- - New switches: -spm and -im!{file_path} to exclude directories from processing |