LXR RHEL4/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_SHARED_FLAT
  40        bool "Enable shared FLAT support"
  41        depends on BINFMT_FLAT
  42        help
  43          Support FLAT shared libraries
  44
  45config BINFMT_AOUT
  46        tristate "Kernel support for a.out and ECOFF binaries"
  47        depends on (X86 && !X86_64) || ALPHA || ARM || M68K || SPARC32
  48        ---help---
  49          A.out (Assembler.OUTput) is a set of formats for libraries and
  50          executables used in the earliest versions of UNIX.  Linux used
  51          the a.out formats QMAGIC and ZMAGIC until they were replaced
  52          with the ELF format.
  53
  54          The conversion to ELF started in 1995.  This option is primarily
  55          provided for historical interest and for the benefit of those
  56          who need to run binaries from that era.
  57
  58          Most people should answer N here.  If you think you may have
  59          occasional use for this format, enable module support above
  60          and answer M here to compile this support as a module called
  61          binfmt_aout.
  62
  63          If any crucial components of your system (such as /sbin/init
  64          or /lib/ld.so) are still in a.out format, you will have to
  65          say Y here.
  66
  67config OSF4_COMPAT
  68        bool "OSF/1 v4 readv/writev compatibility"
  69        depends on ALPHA && BINFMT_AOUT
  70        help
  71          Say Y if you are using OSF/1 binaries (like Netscape and Acrobat)
  72          with v4 shared libraries freely available from Compaq. If you're
  73          going to use shared libraries from Tru64 version 5.0 or later, say N.
  74
  75config BINFMT_EM86
  76        tristate "Kernel support for Linux/Intel ELF binaries"
  77        depends on ALPHA
  78        ---help---
  79          Say Y here if you want to be able to execute Linux/Intel ELF
  80          binaries just like native Alpha binaries on your Alpha machine. For
  81          this to work, you need to have the emulator /usr/bin/em86 in place.
  82
  83          You can get the same functionality by saying N here and saying Y to
  84          "Kernel support for MISC binaries".
  85
  86          You may answer M to compile the emulation support as a module and
  87          later load the module when you want to use a Linux/Intel binary. The
  88          module will be called binfmt_em86. If unsure, say Y.
  89
  90config BINFMT_SOM
  91        tristate "Kernel support for SOM binaries"
  92        depends on PARISC && HPUX
  93        help
  94          SOM is a binary executable format inherited from HP/UX.  Say
  95          Y here to be able to load and execute SOM binaries directly.
  96
  97config BINFMT_MISC
  98        tristate "Kernel support for MISC binaries"
  99        ---help---
 100          If you say Y here, it will be possible to plug wrapper-driven binary
 101          formats into the kernel. You will like this especially when you use
 102          programs that need an interpreter to run like Java, Python, .NET or
 103          Emacs-Lisp. It's also useful if you often run DOS executables under
 104          the Linux DOS emulator DOSEMU (read the DOSEMU-HOWTO, available from
 105          <http://www.tldp.org/docs.html#howto>). Once you have
 106          registered such a binary class with the kernel, you can start one of
 107          those programs simply by typing in its name at a shell prompt; Linux
 108          will automatically feed it to the correct interpreter.
 109
 110          You can do other nice things, too. Read the file
 111          <file:Documentation/binfmt_misc.txt> to learn how to use this
 112          feature, <file:Documentation/java.txt> for information about how
 113          to include Java support. and <file:Documentation/mono.txt> for
 114          information about how to include Mono-based .NET support.
 115
 116          To use binfmt_misc, you will need to mount it:
 117                mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc
 118
 119          You may say M here for module support and later load the module when
 120          you have use for it; the module is called binfmt_misc. If you
 121          don't know what to answer at this point, say Y.
 122