osx man page for size

SIZE(1) 						      General Commands Manual							   SIZE(1)

NAME
       size - print the size of the sections in an object file

SYNOPSIS
       size [ option ... ] [ object ... ]

DESCRIPTION
       Size  (without  the -m option) prints the (decimal) number of bytes required by the __TEXT, __DATA and __OBJC segments.	All other segments
       are totaled and that size is listed in the `others' column.  The final two columns is the sum in decimal and hexadecimal.  If  no  file	is
       specified, a.out is used.

       The options to size(1) are:

       -      Treat the remaining arguments as name of object files not options to size(1).

       -m     Print the sizes of the Mach-O segments and sections as well as the total sizes of the sections in each segment and the total size of
	      the segments in the file.

       -l     When used with the -m option, also print the addresses and offsets of the sections and segments.

       -x     When used with the -m option, print the values in hexadecimal (with leading 0x's) rather than decimal.

       -arch arch_type
	      Specifies the architecture, arch_type, of the file for size(1) to operate on when the file is a universal file.	(See  arch(3)  for
	      the  currently know arch_types.)	The arch_type can be "all" to operate on all architectures in the file.  The default is to display
	      only the host architecture, if the file contains it; otherwise, all architectures in the file are shown.

SEE ALSO
       otool(1)

BUGS
       The size of common symbols can't be reflected in any of the numbers for relocatable object files.

Apple Computer, Inc.						   July 28, 2005							   SIZE(1)