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nm(1) GNU Development Tools nm(1)
NAME
nm - list symbols from object files.
SYNOPSIS
nm [-a|--debug-syms] [-g|--extern-only] [-B] [-C|--demangle]
[-D|--dynamic] [-s|--print-armap] [-o|--print-file-name]
[-n|--numeric-sort] [-p|--no-sort] [-r|--reverse-sort]
[--size-sort] [-u|--undefined-only] [-l|--line-numbers] [--help]
[--version] [-t radix|--radix=radix] [-P|--portability] [-f
format|--format=format] [--target=bfdname] [objfile...]
DESCRIPTION
GNU nm lists the symbols from object files objfile. If no object files
are given as arguments, nm assumes `a.out'.
OPTIONS
The long and short forms of options, shown here as alternatives, are
equivalent.
-A
-o
--print-file-name
Precede each symbol by the name of the input file where it was
found, rather than identifying the input file once only before
all of its symbols.
-a
--debug-syms
Display debugger-only symbols; normally these are not listed.
-B The same as --format=bsd (for compatibility with the MIPS nm).
-C
--demangle
Decode (demangle) low-level symbol names into user-level names.
Besides removing any initial underscore prepended by the system,
this makes C++ function names readable.
-D
--dynamic
Display the dynamic symbols rather than the normal symbols.
This is only meaningful for dynamic objects, such as certain
types of shared libraries.
-f format
Use the output format format, which can be ``bsd'', ``sysv'', or
``posix''. The default is ``bsd''. Only the first character of
format is significant; it can be either upper or lower case.
-g
--extern-only
Display only external symbols.
-n
-v
--numeric-sort
Sort symbols numerically by their addresses, not alphabetically
by their names.
-p
--no-sort
Don't bother to sort the symbols in any order; just print them
in the order encountered.
-P
--portability
Use the POSIX.2 standard output format instead of the default
format. Equivalent to ``-f posix''.
-s
--print-armap
When listing symbols from archive members, include the index: a
mapping (stored in the archive by ar or ranlib) of what modules
contain definitions for what names.
-r
--reverse-sort
Reverse the sense of the sort (whether numeric or alphabetic);
let the last come first.
--size-sort
Sort symbols by size. The size is computed as the difference
between the value of the symbol and the value of the symbol with
the next higher value. The size of the symbol is printed,
rather than the value.
-t radix
--radix=radix
Use radix as the radix for printing the symbol values. It must
be ``d'' for decimal, ``o'' for octal, or ``x'' for hexadecimal.
--target=bfdname
Specify an object code format other than your system's default
format. See objdump(1), for information on listing available
formats.
-u
--undefined-only
Display only undefined symbols (those external to each object
file).
-l
--line-numbers
For each symbol, use debugging information to try to find a
filename and line number. For a defined symbol, look for the
line number of the address of the symbol. For an undefined sym-
bol, look for the line number of a relocation entry which refers
to the symbol. If line number information can be found, print
it after the other symbol information.
-V
--version
Show the version number of nm and exit.
--help Show a summary of the options to nm and exit.
SEE ALSO
`binutils' entry in info; The GNU Binary Utilities, Roland H. Pesch
(October 1991); ar(1), objdump(1), ranlib(1).
COPYING
Copyright (c) 1991, 2000 Free Software Foundation, Inc.
This document is distributed under the terms of the GNU Free Documenta-
tion License, version 1.1. That license is described in the sources
for this manual page, but it is not displayed here in order to make
this manual more consise. Copies of this license can also be obtained
from: http://www.gnu.org/copyleft/.
Free Software Foundation 5 November 1991 nm(1)
Федотов А.М.
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