NAME
    nm - list symbols from object files

SYNOPSIS
    nm [-a|--debug-syms] [-g|--extern-only]
  [-B] [-C|--demangle[=style]] [-D|--dynamic]
  [-S|--print-size] [-s|--print-armap]
  [-A|-o|--print-file-name]
  [-n|-v|--numeric-sort] [-p|--no-sort]
  [-r|--reverse-sort] [--size-sort] [-u|--undefined-only]
  [-t radix|--radix=radix] [-P|--portability]
  [--target=bfdname] [-fformat|--format=format]
  [--defined-only] [-l|--line-numbers] [--no-demangle]
  [-V|--version] [-X 32_64] [--help] [objfile...]

DESCRIPTION
    GNU nm lists the symbols from object files objfile.... If no object
    files are listed as arguments, nm assumes the file a.out.

    For each symbol, nm shows:

    o  The symbol value, in the radix selected by options (see below), or
   hexadecimal by default.

    o  The symbol type. At least the following types are used; others
   are, as well, depending on the object file format. If lowercase,
   the symbol is local; if uppercase, the symbol is global (external).

   "A" The symbol's value is absolute, and will not be changed by fur-
     ther linking.

   "B" The symbol is in the uninitialized data section (known as BSS).

   "C" The symbol is common. Common symbols are uninitialized  data.
     When linking, multiple common symbols may appear with the same
     name. If the symbol is defined anywhere, the common symbols
     are treated as undefined references.

   "D" The symbol is in the initialized data section.

   "G" The symbol is in an initialized data section for small objects.
     Some object file formats permit more efficient access to  small
     data objects, such as  a global int variable as opposed to a
     large global array.

   "I" The symbol is an indirect reference to another symbol. This is
     a GNU extension to the a.out object file format which is rarely
     used.

   "N" The symbol is a debugging symbol.

   "R" The symbol is in a read only data section.

   "S" The symbol is in an uninitialized data section for  small
     objects.

   "T" The symbol is in the text (code) section.

   "U" The symbol is undefined.

   "V" The symbol is a weak object.  When a weak defined symbol is
     linked with a normal defined symbol, the normal defined symbol
     is used with no error. When a weak undefined symbol is linked
     and the symbol is not defined, the value  of the weak symbol
     becomes zero with no error.

   "W" The symbol is a weak  symbol that has not been specifically
     tagged as a weak object symbol. When a weak defined symbol is
     linked with a normal defined symbol, the normal defined symbol
     is used with no error. When a weak undefined symbol is linked
     and the  symbol  is not defined, the value of the weak symbol
     becomes zero with no error.

   "-" The symbol is a stabs symbol in an a.out object file. In this
     case, the next  values printed are the stabs other field, the
     stabs desc field, and the stab type. Stabs symbols are used to
     hold debugging information.

   "?" The symbol type is unknown, or object file format specific.

    o  The symbol name.

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 (or archive mem-
   ber)  in which it was found, rather than identifying the input file
   once only, before all of its symbols.

    -a
    --debug-syms
   Display all symbols, even debugger-only symbols; normally these are
   not listed.

    -B The same as --format=bsd (for compatibility with the MIPS nm).

    -C
    --demangle[=style]
   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. Different compilers have
   different mangling styles. The optional demangling style argument
   can be used to choose an appropriate demangling style for your com-
   piler.

    --no-demangle
   Do not demangle low-level symbol names. This is the default.

    -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
    --format=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.

    -l
    --line-numbers
   For each symbol, use debugging information to try to find a  file-
   name and line number. For a defined symbol, look for the line num-
   ber of the address of the symbol. For an undefined  symbol, look
   for the line number of a relocation entry which refers to the sym-
   bol.  If line number information can be found, print it after the
   other symbol information.

    -n
    -v
    --numeric-sort
   Sort symbols numerically by their addresses, rather than alphabeti-
   cally by their names.

    -p
    --no-sort
   Do not bother to sort the symbols in any order; print them in the
   order encountered.

    -P
    --portability
   Use the POSIX.2 standard output format instead of the default for-
   mat.  Equivalent to -f posix.

    -S
    --print-size
   Print size of defined symbols for the "bsd" output format.

    -s
    --print-armap
   When listing symbols from archive members, include the index: a
   mapping (stored in  the archive by ar or ranlib) of which modules
   contain definitions for which names.

    -r
    --reverse-sort
   Reverse the order 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 for-
   mat.

    -u
    --undefined-only
   Display only undefined symbols (those external to each object
   file).

    --defined-only
   Display only defined symbols for each object file.

    -V
    --version
   Show the version number of nm and exit.

    -X This  option  is ignored for compatibility with the AIX version of
   nm. It takes one parameter which must be the string 32_64.  The
   default mode of AIX nm corresponds to -X 32, which is not supported
   by GNU nm.

    --help
   Show a summary of the options to nm and exit.

SEE ALSO
   ar(1),objdump(1),ranlib(1), and the Info entries for binutils.

COPYRIGHT
    Copyright (c) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001, 2002
    Free Software Foundation, Inc.

    Permission is granted to copy, distribute and/or modify this document
    under the terms of the GNU Free Documentation License, Version 1.1 or
    any later version published by the Free Software Foundation; with no
    Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
    Texts. A copy of the license is included in the section entitled "GNU
    Free Documentation License".