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.

The command line options have the following meanings.
 

-A
-B
--format=compatibility
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.

The following is an example of the Berkeley (default) format of output from size.
 

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

The following example shows the same data, but displayed closer to System V conventions.
 

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

--help

Shows a summary of acceptable arguments and options.
 
-d
-o
-x
--radix=number
Using one of these options, you can control whether the size of each section is given: in decimal (‘-d’, or ‘--radix=10’); in octal (‘-o’, or ‘--radix=8’); or, in 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’.
--target=bfdname
Specify that the object-code format for objfile is bfdname. This option may not be necessary; size can automatically recognize many formats. See Target selection for more information.
-V
--version
Display the version number of size.