Kconfig

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    1 config XZ_DEC
    2         tristate "XZ decompression support"
    3         select CRC32
    4         help
    5           LZMA2 compression algorithm and BCJ filters are supported using
    6           the .xz file format as the container. For integrity checking,
    7           CRC32 is supported. See Documentation/xz.txt for more information.
    8 
    9 if XZ_DEC
   10 
   11 config XZ_DEC_X86
   12         bool "x86 BCJ filter decoder"
   13         default y if X86
   14         select XZ_DEC_BCJ
   15 
   16 config XZ_DEC_POWERPC
   17         bool "PowerPC BCJ filter decoder"
   18         default y if PPC
   19         select XZ_DEC_BCJ
   20 
   21 config XZ_DEC_IA64
   22         bool "IA-64 BCJ filter decoder"
   23         default y if IA64
   24         select XZ_DEC_BCJ
   25 
   26 config XZ_DEC_ARM
   27         bool "ARM BCJ filter decoder"
   28         default y if ARM
   29         select XZ_DEC_BCJ
   30 
   31 config XZ_DEC_ARMTHUMB
   32         bool "ARM-Thumb BCJ filter decoder"
   33         default y if (ARM && ARM_THUMB)
   34         select XZ_DEC_BCJ
   35 
   36 config XZ_DEC_SPARC
   37         bool "SPARC BCJ filter decoder"
   38         default y if SPARC
   39         select XZ_DEC_BCJ
   40 
   41 config XZ_DEC_MICROLZMA
   42         bool "MicroLZMA decoder"
   43         default n
   44         help
   45           MicroLZMA is a header format variant where the first byte
   46           of a raw LZMA stream (without the end of stream marker) has
   47           been replaced with a bitwise-negation of the lc/lp/pb
   48           properties byte. MicroLZMA was created to be used in EROFS
   49           but can be used by other things too where wasting minimal
   50           amount of space for headers is important.
   51 
   52           Unless you know that you need this, say N.
   53 
   54 endif
   55 
   56 config XZ_DEC_BCJ
   57         bool
   58         default n
   59 
   60 config XZ_DEC_TEST
   61         tristate "XZ decompressor tester"
   62         default n
   63         depends on XZ_DEC
   64         help
   65           This allows passing .xz files to the in-kernel XZ decoder via
   66           a character special file. It calculates CRC32 of the decompressed
   67           data and writes diagnostics to the system log.
   68 
   69           Unless you are developing the XZ decoder, you don't need this
   70           and should say N.

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FreeBSD/Linux Kernel Cross Reference sys/contrib/xz-embedded/linux/lib/xz/Kconfig

FreeBSD/Linux Kernel Cross Reference
sys/contrib/xz-embedded/linux/lib/xz/Kconfig