size Man page

SIZE(1) GNU Development Tools SIZE(1)


size – list section sizes and total size.


size [-A|-B|–format=compatibility] [–help] [-d|-o|-x|–radix=number] [–common] [-t|–totals] [–target=bfdname] [-V|–version] [objfile…]


The GNU size utility lists the section sizes—and the total size—for
each of the object or archive files objfile in its argument list. By
default, one line of output is generated for each object file or each
module in an archive.

objfile… are the object files to be examined. If none are specified,
the file “a.out” will be used.


The command line options have the following meanings:

Using one of these options, you can choose whether the output from
GNU size resembles output from System V size (using -A, or
–format=sysv), or Berkeley size (using -B, or –format=berkeley).
The default is the one-line format similar to Berkeley’s.

Here is an example of the Berkeley (default) format of output from

$ size –format=Berkeley ranlib size
text data bss dec hex filename
294880 81920 11592 388392 5ed28 ranlib
294880 81920 11888 388688 5ee50 size

This is the same data, but displayed closer to System V

$ size –format=SysV ranlib size
ranlib :
section size addr
.text 294880 8192
.data 81920 303104
.bss 11592 385024
Total 388392

size :
section size addr
.text 294880 8192
.data 81920 303104
.bss 11888 385024
Total 388688

Show a summary of acceptable arguments and options.

Using one of these options, you can control whether the size of
each section is given in decimal (-d, or –radix=10); octal (-o, or
–radix=8); or hexadecimal (-x, or –radix=16). In –radix=number,
only the three values (8, 10, 16) are supported. The total size is
always given in two radices; decimal and hexadecimal for -d or -x
output, or octal and hexadecimal if you’re using -o.

Print total size of common symbols in each file. When using
Berkeley format these are included in the bss size.

Show totals of all objects listed (Berkeley format listing mode

Specify that the object-code format for objfile is bfdname. This
option may not be necessary; size can automatically recognize many

Display the version number of size.

Read command-line options from file. The options read are inserted
in place of the original @file option. If file does not exist, or
cannot be read, then the option will be treated literally, and not

Options in file are separated by whitespace. A whitespace
character may be included in an option by surrounding the entire
option in either single or double quotes. Any character (including
a backslash) may be included by prefixing the character to be
included with a backslash. The file may itself contain additional
@file options; any such options will be processed recursively.


ar, objdump, readelf, and the Info entries for binutils.


Copyright (c) 1991-2015 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 1.3 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”.

binutils-2.26.1 2016-06-29 SIZE(1)

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