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Linus Torvalds1da177e2005-04-16 15:20:36 -07001config BINFMT_ELF
2 bool "Kernel support for ELF binaries"
David Howells2919b512006-01-08 01:01:16 -08003 depends on MMU && (BROKEN || !FRV)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 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
Roland McGrathb9d36d52008-01-30 13:31:46 +010026config COMPAT_BINFMT_ELF
27 bool
28 depends on COMPAT && MMU
29
Linus Torvalds1da177e2005-04-16 15:20:36 -070030config BINFMT_ELF_FDPIC
31 bool "Kernel support for FDPIC ELF binaries"
32 default y
Bryan Wu1394f032007-05-06 14:50:22 -070033 depends on (FRV || BLACKFIN)
Linus Torvalds1da177e2005-04-16 15:20:36 -070034 help
35 ELF FDPIC binaries are based on ELF, but allow the individual load
36 segments of a binary to be located in memory independently of each
37 other. This makes this format ideal for use in environments where no
38 MMU is available as it still permits text segments to be shared,
39 even if data segments are not.
40
41 It is also possible to run FDPIC ELF binaries on MMU linux also.
42
43config BINFMT_FLAT
Adrian Bunk3202e182008-04-29 00:59:02 -070044 bool "Kernel support for flat binaries"
Adrian Bunkb8c141e2008-06-05 22:45:55 -070045 depends on !MMU && (!FRV || BROKEN)
Linus Torvalds1da177e2005-04-16 15:20:36 -070046 help
47 Support uClinux FLAT format binaries.
48
49config BINFMT_ZFLAT
50 bool "Enable ZFLAT support"
51 depends on BINFMT_FLAT
52 select ZLIB_INFLATE
53 help
54 Support FLAT format compressed binaries
55
56config BINFMT_SHARED_FLAT
57 bool "Enable shared FLAT support"
58 depends on BINFMT_FLAT
59 help
60 Support FLAT shared libraries
61
62config BINFMT_AOUT
63 tristate "Kernel support for a.out and ECOFF binaries"
David Howells7fa30312008-02-08 04:19:28 -080064 depends on ARCH_SUPPORTS_AOUT && \
David S. Millerec98c6b2008-04-20 02:14:23 -070065 (X86_32 || ALPHA || ARM || M68K)
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 ---help---
67 A.out (Assembler.OUTput) is a set of formats for libraries and
68 executables used in the earliest versions of UNIX. Linux used
69 the a.out formats QMAGIC and ZMAGIC until they were replaced
70 with the ELF format.
71
72 The conversion to ELF started in 1995. This option is primarily
73 provided for historical interest and for the benefit of those
74 who need to run binaries from that era.
75
76 Most people should answer N here. If you think you may have
77 occasional use for this format, enable module support above
78 and answer M here to compile this support as a module called
79 binfmt_aout.
80
81 If any crucial components of your system (such as /sbin/init
82 or /lib/ld.so) are still in a.out format, you will have to
83 say Y here.
84
85config OSF4_COMPAT
86 bool "OSF/1 v4 readv/writev compatibility"
87 depends on ALPHA && BINFMT_AOUT
88 help
89 Say Y if you are using OSF/1 binaries (like Netscape and Acrobat)
90 with v4 shared libraries freely available from Compaq. If you're
91 going to use shared libraries from Tru64 version 5.0 or later, say N.
92
93config BINFMT_EM86
94 tristate "Kernel support for Linux/Intel ELF binaries"
95 depends on ALPHA
96 ---help---
97 Say Y here if you want to be able to execute Linux/Intel ELF
98 binaries just like native Alpha binaries on your Alpha machine. For
99 this to work, you need to have the emulator /usr/bin/em86 in place.
100
101 You can get the same functionality by saying N here and saying Y to
102 "Kernel support for MISC binaries".
103
104 You may answer M to compile the emulation support as a module and
105 later load the module when you want to use a Linux/Intel binary. The
106 module will be called binfmt_em86. If unsure, say Y.
107
108config BINFMT_SOM
109 tristate "Kernel support for SOM binaries"
110 depends on PARISC && HPUX
111 help
112 SOM is a binary executable format inherited from HP/UX. Say
113 Y here to be able to load and execute SOM binaries directly.
114
115config BINFMT_MISC
116 tristate "Kernel support for MISC binaries"
117 ---help---
118 If you say Y here, it will be possible to plug wrapper-driven binary
119 formats into the kernel. You will like this especially when you use
120 programs that need an interpreter to run like Java, Python, .NET or
121 Emacs-Lisp. It's also useful if you often run DOS executables under
122 the Linux DOS emulator DOSEMU (read the DOSEMU-HOWTO, available from
123 <http://www.tldp.org/docs.html#howto>). Once you have
124 registered such a binary class with the kernel, you can start one of
125 those programs simply by typing in its name at a shell prompt; Linux
126 will automatically feed it to the correct interpreter.
127
128 You can do other nice things, too. Read the file
129 <file:Documentation/binfmt_misc.txt> to learn how to use this
130 feature, <file:Documentation/java.txt> for information about how
131 to include Java support. and <file:Documentation/mono.txt> for
132 information about how to include Mono-based .NET support.
133
134 To use binfmt_misc, you will need to mount it:
135 mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc
136
137 You may say M here for module support and later load the module when
138 you have use for it; the module is called binfmt_misc. If you
139 don't know what to answer at this point, say Y.