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LIPO(1) 										  LIPO(1)

NAME
       lipo - create or operate on universal files

SYNOPSIS
       lipo  [-info]  [-detailed_info]	[-arch	arch_type  input_file]	...   [  input_file]  ...
       [-arch_blank arch_type] [-create] [-thin  arch_type]  [-replace	arch_type  filename]  ...
       [-remove arch_type] ...	[-extract arch_type] ...  [-extract_family arch_type] ...  [-ver-
       ify_arch arch_type ...]	[-output output_file] [-segalign arch_type value] ...

DESCRIPTION
       The lipo command creates or operates on ``universal'' (multi-architecture) files.  It only
       ever  produces one output file, and never alters the input file.  The operations that lipo
       performs are: listing the architecture types in a universal file; creating a  single  uni-
       versal  file  from  one	or  more input files; thinning out a single universal file to one
       specified architecture type; and  extracting,  replacing,  and/or  removing  architectures
       types from the input file to create a single new universal output file.

       Only  one  option can be specified, with the exception of -arch, -arch_blank, -output, and
       -segalign, which are used in combination with other options.  The input_file  argument  is
       required,  and  only  the  -create option allows more than one input_file to be specified.
       The -output flag must be used, except with the -info and -detailed_info flags.

       The arch_type arguments may be any of the supported architecture names listed in  the  man
       page arch(3).

OPTIONS
       -info  Briefly  list the architecture types in the input universal file (just the names of
	      each architecture).

       -detailed_info
	      Display a detailed list of the architecture types in the input universal file  (all
	      the the information in the universal header, for each architecture in the file).

       -arch arch_type input_file
	      Tells  lipo  that  input_file  contains the specified architecture type.	The -arch
	      arch_type specification is unnecessary if input_file is an object file, a universal
	      file, or some other file whose architecture(s) lipo can figure out.

       -arch_blank arch_type
	      Specifies  that  the  output  for  the specified arch_type will be an MH_DYLIB_STUB
	      file. This flag may not be used with any operation other than -create.

       -output output_file
	      Specifies its argument to be the output file.

       -create
	      Take the input files (or file) and create one universal output file from them.

       -thin arch_type
	      Take one input file and create a thin output file with the specified arch_type.

       -replace arch_type file_name
	      Take one universal input file; in the output file, replace the  arch_type  contents
	      of the input file with the contents of the specified file_name.

       -remove arch_type
	      Take  one  universal  input file and remove the arch_type from that universal file,
	      placing the result in the output file.

       -extract arch_type
	      Take one universal input file and copy the arch_type from that universal file  into
	      a universal output file containing only that architecture.

       -extract_family arch_type
	      Take  one  universal  input file and copy all of the arch_types for the family that
	      arch_type is in from that universal file into an output file containing only  those
	      architectures.   The file will be thin if only one architecture is found or univer-
	      sal otherwise.

       -verify_arch arch_type ...
	      Take one input file and verify the specified arch_types are present  in  the  file.
	      If so then exit with a status of 0 else exit with a status of 1.

       -segalign arch_type value
	      Set the segment alignment of the specified arch_type when creating a universal file
	      containing that architecture.  value is a hexadecimal number that must be an  inte-
	      gral  power  of 2.  This is only needed when lipo can't figure out the alignment of
	      an input file (currently not an object file), or when it guesses at  the	alignment
	      too  conservatively.  The default for files unknown to lipo is 0 (2^0, or an align-
	      ment of one byte), and the default alignment for archives  is  4	(2^2,  or  4-byte
	      alignment).

SEE ALSO
       arch(3)

Apple Computer, Inc.			September 12, 2006				  LIPO(1)
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