LXR linux-bk/fs/Kconfig.binfmt

   1config BINFMT_ELF
   2        bool "Kernel support for ELF binaries"
   3        depends on MMU
   4        default y
   5        ---help---
   6          ELF (Executable and Linkable Format) is a format for libraries and
   7          executables used across different architectures and operating
   8          systems. Saying Y here will enable your kernel to run ELF binaries
   9          and enlarge it by about 13 KB. ELF support under Linux has now all
  10          but replaced the traditional Linux a.out formats (QMAGIC and ZMAGIC)
  11          because it is portable (this does *not* mean that you will be able
  12          to run executables from different architectures or operating systems
  13          however) and makes building run-time libraries very easy. Many new
  14          executables are distributed solely in ELF format. You definitely
  15          want to say Y here.
  16
  17          Information about ELF is contained in the ELF HOWTO available from
  18          <http://www.tldp.org/docs.html#howto>.
  19
  20          If you find that after upgrading from Linux kernel 1.2 and saying Y
  21          here, you still can't run any ELF binaries (they just crash), then
  22          you'll have to install the newest ELF runtime libraries, including
  23          ld.so (check the file <file:Documentation/Changes> for location and
  24          latest version).
  25
  26config BINFMT_FLAT
  27        tristate "Kernel support for flat binaries"
  28        depends on !MMU || SUPERH
  29        help
  30          Support uClinux FLAT format binaries.
  31
  32config BINFMT_ZFLAT
  33        bool "Enable ZFLAT support"
  34        depends on BINFMT_FLAT
  35        select ZLIB_INFLATE
  36        help
  37          Support FLAT format compressed binaries
  38
  39config BINFMT_AOUT
  40        tristate "Kernel support for a.out and ECOFF binaries"
  41        depends on (X86 && !X86_64) || ALPHA || ARM || M68K || MIPS || SPARC
  42        ---help---
  43          A.out (Assembler.OUTput) is a set of formats for libraries and
  44          executables used in the earliest versions of UNIX.  Linux used
  45          the a.out formats QMAGIC and ZMAGIC until they were replaced
  46          with the ELF format.
  47
  48          The conversion to ELF started in 1995.  This option is primarily
  49          provided for historical interest and for the benefit of those
  50          who need to run binaries from that era.
  51
  52          Most people should answer N here.  If you think you may have
  53          occasional use for this format, enable module support above
  54          and answer M here to compile this support as a module called
  55          binfmt_aout.
  56
  57          If any crucial components of your system (such as /sbin/init
  58          or /lib/ld.so) are still in a.out format, you will have to
  59          say Y here.
  60
  61config OSF4_COMPAT
  62        bool "OSF/1 v4 readv/writev compatibility"
  63        depends on ALPHA && BINFMT_AOUT
  64        help
  65          Say Y if you are using OSF/1 binaries (like Netscape and Acrobat)
  66          with v4 shared libraries freely available from Compaq. If you're
  67          going to use shared libraries from Tru64 version 5.0 or later, say N.
  68
  69config BINFMT_EM86
  70        tristate "Kernel support for Linux/Intel ELF binaries"
  71        depends on ALPHA
  72        ---help---
  73          Say Y here if you want to be able to execute Linux/Intel ELF
  74          binaries just like native Alpha binaries on your Alpha machine. For
  75          this to work, you need to have the emulator /usr/bin/em86 in place.
  76
  77          You can get the same functionality by saying N here and saying Y to
  78          "Kernel support for MISC binaries".
  79
  80          You may answer M to compile the emulation support as a module and
  81          later load the module when you want to use a Linux/Intel binary. The
  82          module will be called binfmt_em86. If unsure, say Y.
  83
  84config BINFMT_SOM
  85        tristate "Kernel support for SOM binaries"
  86        depends on PARISC && HPUX
  87        help
  88          SOM is a binary executable format inherited from HP/UX.  Say
  89          Y here to be able to load and execute SOM binaries directly.
  90
  91config BINFMT_MISC
  92        tristate "Kernel support for MISC binaries"
  93        ---help---
  94          If you say Y here, it will be possible to plug wrapper-driven binary
  95          formats into the kernel. You will like this especially when you use
  96          programs that need an interpreter to run like Java, Python or
  97          Emacs-Lisp. It's also useful if you often run DOS executables under
  98          the Linux DOS emulator DOSEMU (read the DOSEMU-HOWTO, available from
  99          <http://www.tldp.org/docs.html#howto>). Once you have
 100          registered such a binary class with the kernel, you can start one of
 101          those programs simply by typing in its name at a shell prompt; Linux
 102          will automatically feed it to the correct interpreter.
 103
 104          You can do other nice things, too. Read the file
 105          <file:Documentation/binfmt_misc.txt> to learn how to use this
 106          feature, and <file:Documentation/java.txt> for information about how
 107          to include Java support.
 108
 109          To use binfmt_misc, you will need to mount it:
 110                mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc
 111
 112          You may say M here for module support and later load the module when
 113          you have use for it; the module is called binfmt_misc. If you
 114          don't know what to answer at this point, say Y.
 115