[linux.git] / fs / Kconfig.binfmt

config BINFMT_ELF
	bool "Kernel support for ELF binaries"
	depends on MMU && (BROKEN || !FRV)
	default y
	---help---
	  ELF (Executable and Linkable Format) is a format for libraries and
	  executables used across different architectures and operating
	  systems. Saying Y here will enable your kernel to run ELF binaries
	  and enlarge it by about 13 KB. ELF support under Linux has now all
	  but replaced the traditional Linux a.out formats (QMAGIC and ZMAGIC)
	  because it is portable (this does *not* mean that you will be able
	  to run executables from different architectures or operating systems
	  however) and makes building run-time libraries very easy. Many new
	  executables are distributed solely in ELF format. You definitely
	  want to say Y here.

	  Information about ELF is contained in the ELF HOWTO available from
	  <http://www.tldp.org/docs.html#howto>.

	  If you find that after upgrading from Linux kernel 1.2 and saying Y
	  here, you still can't run any ELF binaries (they just crash), then
	  you'll have to install the newest ELF runtime libraries, including
	  ld.so (check the file <file:Documentation/Changes> for location and
	  latest version).

config BINFMT_ELF_FDPIC
	bool "Kernel support for FDPIC ELF binaries"
	default y
	depends on FRV
	help
	  ELF FDPIC binaries are based on ELF, but allow the individual load
	  segments of a binary to be located in memory independently of each
	  other. This makes this format ideal for use in environments where no
	  MMU is available as it still permits text segments to be shared,
	  even if data segments are not.

	  It is also possible to run FDPIC ELF binaries on MMU linux also.

config BINFMT_FLAT
	tristate "Kernel support for flat binaries"
	depends on !MMU || SUPERH
	help
	  Support uClinux FLAT format binaries.

config BINFMT_ZFLAT
	bool "Enable ZFLAT support"
	depends on BINFMT_FLAT
	select ZLIB_INFLATE
	help
	  Support FLAT format compressed binaries

config BINFMT_SHARED_FLAT
	bool "Enable shared FLAT support"
	depends on BINFMT_FLAT
	help
	  Support FLAT shared libraries

config BINFMT_AOUT
	tristate "Kernel support for a.out and ECOFF binaries"
	depends on X86_32 || ALPHA || ARM || M68K || SPARC32
	---help---
	  A.out (Assembler.OUTput) is a set of formats for libraries and
	  executables used in the earliest versions of UNIX.  Linux used
	  the a.out formats QMAGIC and ZMAGIC until they were replaced
	  with the ELF format.

	  The conversion to ELF started in 1995.  This option is primarily
	  provided for historical interest and for the benefit of those
	  who need to run binaries from that era.

	  Most people should answer N here.  If you think you may have
	  occasional use for this format, enable module support above
	  and answer M here to compile this support as a module called
	  binfmt_aout.

	  If any crucial components of your system (such as /sbin/init
	  or /lib/ld.so) are still in a.out format, you will have to
	  say Y here.

config OSF4_COMPAT
	bool "OSF/1 v4 readv/writev compatibility"
	depends on ALPHA && BINFMT_AOUT
	help
	  Say Y if you are using OSF/1 binaries (like Netscape and Acrobat)
	  with v4 shared libraries freely available from Compaq. If you're
	  going to use shared libraries from Tru64 version 5.0 or later, say N.

config BINFMT_EM86
	tristate "Kernel support for Linux/Intel ELF binaries"
	depends on ALPHA
	---help---
	  Say Y here if you want to be able to execute Linux/Intel ELF
	  binaries just like native Alpha binaries on your Alpha machine. For
	  this to work, you need to have the emulator /usr/bin/em86 in place.

	  You can get the same functionality by saying N here and saying Y to
	  "Kernel support for MISC binaries".

	  You may answer M to compile the emulation support as a module and
	  later load the module when you want to use a Linux/Intel binary. The
	  module will be called binfmt_em86. If unsure, say Y.

config BINFMT_SOM
	tristate "Kernel support for SOM binaries"
	depends on PARISC && HPUX
	help
	  SOM is a binary executable format inherited from HP/UX.  Say
	  Y here to be able to load and execute SOM binaries directly.

config BINFMT_MISC
	tristate "Kernel support for MISC binaries"
	---help---
	  If you say Y here, it will be possible to plug wrapper-driven binary
	  formats into the kernel. You will like this especially when you use
	  programs that need an interpreter to run like Java, Python, .NET or
	  Emacs-Lisp. It's also useful if you often run DOS executables under
	  the Linux DOS emulator DOSEMU (read the DOSEMU-HOWTO, available from
	  <http://www.tldp.org/docs.html#howto>). Once you have
	  registered such a binary class with the kernel, you can start one of
	  those programs simply by typing in its name at a shell prompt; Linux
	  will automatically feed it to the correct interpreter.

	  You can do other nice things, too. Read the file
	  <file:Documentation/binfmt_misc.txt> to learn how to use this
	  feature, <file:Documentation/java.txt> for information about how
	  to include Java support. and <file:Documentation/mono.txt> for
          information about how to include Mono-based .NET support.

          To use binfmt_misc, you will need to mount it:
		mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc

	  You may say M here for module support and later load the module when
	  you have use for it; the module is called binfmt_misc. If you
	  don't know what to answer at this point, say Y.
Commit	Line	Data
1da177e4 LT	1	config BINFMT_ELF
1da177e4 LT	2	bool "Kernel support for ELF binaries"
2919b510	3	depends on MMU && (BROKEN \|\| !FRV)
1da177e4 LT	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
	26	config BINFMT_ELF_FDPIC
	27	bool "Kernel support for FDPIC ELF binaries"
	28	default y
	29	depends on FRV
	30	help
	31	ELF FDPIC binaries are based on ELF, but allow the individual load
	32	segments of a binary to be located in memory independently of each
	33	other. This makes this format ideal for use in environments where no
	34	MMU is available as it still permits text segments to be shared,
	35	even if data segments are not.
	36
	37	It is also possible to run FDPIC ELF binaries on MMU linux also.
	38
	39	config BINFMT_FLAT
	40	tristate "Kernel support for flat binaries"
	41	depends on !MMU \|\| SUPERH
	42	help
	43	Support uClinux FLAT format binaries.
	44
	45	config BINFMT_ZFLAT
	46	bool "Enable ZFLAT support"
	47	depends on BINFMT_FLAT
	48	select ZLIB_INFLATE
	49	help
	50	Support FLAT format compressed binaries
	51
	52	config BINFMT_SHARED_FLAT
	53	bool "Enable shared FLAT support"
	54	depends on BINFMT_FLAT
	55	help
	56	Support FLAT shared libraries
	57
	58	config BINFMT_AOUT
	59	tristate "Kernel support for a.out and ECOFF binaries"
0d078f6f	60	depends on X86_32 \|\| ALPHA \|\| ARM \|\| M68K \|\| SPARC32
1da177e4 LT	61	---help---
	62	A.out (Assembler.OUTput) is a set of formats for libraries and
	63	executables used in the earliest versions of UNIX. Linux used
	64	the a.out formats QMAGIC and ZMAGIC until they were replaced
	65	with the ELF format.
	66
	67	The conversion to ELF started in 1995. This option is primarily
	68	provided for historical interest and for the benefit of those
	69	who need to run binaries from that era.
	70
	71	Most people should answer N here. If you think you may have
	72	occasional use for this format, enable module support above
	73	and answer M here to compile this support as a module called
	74	binfmt_aout.
	75
	76	If any crucial components of your system (such as /sbin/init
	77	or /lib/ld.so) are still in a.out format, you will have to
	78	say Y here.
	79
	80	config OSF4_COMPAT
	81	bool "OSF/1 v4 readv/writev compatibility"
	82	depends on ALPHA && BINFMT_AOUT
	83	help
	84	Say Y if you are using OSF/1 binaries (like Netscape and Acrobat)
	85	with v4 shared libraries freely available from Compaq. If you're
	86	going to use shared libraries from Tru64 version 5.0 or later, say N.
	87
	88	config BINFMT_EM86
	89	tristate "Kernel support for Linux/Intel ELF binaries"
	90	depends on ALPHA
	91	---help---
	92	Say Y here if you want to be able to execute Linux/Intel ELF
	93	binaries just like native Alpha binaries on your Alpha machine. For
	94	this to work, you need to have the emulator /usr/bin/em86 in place.
	95
	96	You can get the same functionality by saying N here and saying Y to
	97	"Kernel support for MISC binaries".
	98
	99	You may answer M to compile the emulation support as a module and
	100	later load the module when you want to use a Linux/Intel binary. The
	101	module will be called binfmt_em86. If unsure, say Y.
	102
	103	config BINFMT_SOM
	104	tristate "Kernel support for SOM binaries"
	105	depends on PARISC && HPUX
	106	help
	107	SOM is a binary executable format inherited from HP/UX. Say
	108	Y here to be able to load and execute SOM binaries directly.
	109
	110	config BINFMT_MISC
	111	tristate "Kernel support for MISC binaries"
	112	---help---
	113	If you say Y here, it will be possible to plug wrapper-driven binary
	114	formats into the kernel. You will like this especially when you use
	115	programs that need an interpreter to run like Java, Python, .NET or
	116	Emacs-Lisp. It's also useful if you often run DOS executables under
	117	the Linux DOS emulator DOSEMU (read the DOSEMU-HOWTO, available from
	118	<http://www.tldp.org/docs.html#howto>). Once you have
	119	registered such a binary class with the kernel, you can start one of
	120	those programs simply by typing in its name at a shell prompt; Linux
	121	will automatically feed it to the correct interpreter.
	122
	123	You can do other nice things, too. Read the file
	124	<file:Documentation/binfmt_misc.txt> to learn how to use this
125	feature, <file:Documentation/java.txt> for information about how
126	to include Java support. and <file:Documentation/mono.txt> for
127	information about how to include Mono-based .NET support.
128
129	To use binfmt_misc, you will need to mount it:
130	mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc
131
132	You may say M here for module support and later load the module when
133	you have use for it; the module is called binfmt_misc. If you
134	don't know what to answer at this point, say Y.