ar man page on HP-UX

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ar(4)									 ar(4)

       ar - common archive file format

       The  command  is used to concatenate several files into an archive file
       (see ar(1)).  Archives are used mainly as libraries to be  searched  by
       the link editor (see ld(1)).

       Each archive begins with the archive magic string.

       Following  the archive magic string are the archive file members.  Each
       file member is preceded by a file member header which is of the follow‐
       ing format:

       All  information in the file member headers is in printable ASCII.  The
       numeric information contained in the headers is stored as decimal  num‐
       bers  (except  for  which  is in octal).	 Thus, if the archive contains
       printable files, the archive itself is printable.

       The contents of the field are slash terminated and  blank-padded.   The
       field is the modification date of the file at the time of its insertion
       into the archive.  Common format archives can be moved from  system  to
       system  as  long	 as  the  portable archive command is used.  Note that
       older versions of did not use the common archive format, and those  ar‐
       chives cannot be read or written by the common archiver.

       Each  archive  file  member begins on an even byte boundary; a new-line
       character is inserted between files if  necessary.   Nevertheless,  the
       size given reflects the actual size of the file exclusive of padding.

       Notice  there  is  no provision for empty areas in an archive file.  If
       the archive symbol table exists, the first file in the  archive	has  a
       zero-length  name  (i.e.,  and  The contents of this archive member are
       machine-dependent.  Refer to the appropriate a.out(4) manual entry  for
       more information.

       Each  archive which contains object files (see a.out(4)) may include an
       archive symbol table.  This symbol table is used	 by  the  link	editor
       (see  ld(1))  to	 determine which archive members must be loaded during
       the link edit process.  The archive symbol  table  (if  it  exists)  is
       always  the  first  member  in the archive (but is never listed) and is
       automatically created and/or updated by

       If a member with a file name greater than 15 bytes  exists  within  the
       archive,	 then the archive will also contain an additional special mem‐
       ber to store the long file name string table. The special string	 table
       member has a zero length name where and

       If  a  special string table exists, it will precede all non-special ar‐
       chive members. If both a symbol table member and a string table	member
       exist then the symbol table member will always precede the string table

       Each entry in the string table is followed by a slash  and  a  new-line
       character. The offset of the table begins at zero. If an archive member
       name exceeds 15 bytes, then the entry in the member's header  does  not
       contain	a  name,  instead it contains the offset into the string table
       preceded by a slash.

       For example, the member name contains in the field.  This value	repre‐
       sents  the  offset  into the string table.  The member name contains in
       the field.  The long name string table would have the following format:

		+0   +1	   +2	 +3    +4    +5	   +6	 +7    +8    +9
	     0│ t  |  h	 |  i  |  s  |	i  |  s	 |  a  |  v  |	e  |  r |
	    10│ y  |  l	 |  o  |  n  |	g  |  f	 |  i  |  l  |	e  |  n |
	    20│ a  |  m	 |  e  |  .  |	o  |  /	 | \n  |  y  |	e  |  t |
	    30│ a  |  n	 |  o  |  t  |	h  |  e	 |  r  |  l  |	o  |  n |
	    40│ g  |  f	 |  i  |  l  |	e  |  n	 |  a  |  m  |	e  |  . |
	    50│ o  |  /	 | \n  |

   System Tools:
       ar(1)		 create archived libraries
       ld(1)		 invoke the link editor

       a.out(4)		 assembler, compiler, and linker output
       magic(4)		 magic number for HP-UX implementations
       ranlib(1)	 regenerate an archive symbol table
       strip(1)		 strip symbol and  line	 number	 information  from  an
			 object file

       removes	 the  archive  symbol  table  member  from  the	 archive  (see
       strip(1)).  The archive symbol table must  be  restored	by  using  the
       option  of  the command or the ranlib(1) command before the archive can
       be used with the link editor.


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