@node Top, ar, (dir), (dir)
@chapter Introduction
+@cindex version
This brief manual contains preliminary documentation for the GNU binary
utilities (collectively version 1.90):
@table @code
@end ifinfo
@menu
-* ar:: ar
-* ld:: ld
-* nm:: nm
-* objdump:: objdump
-* ranlib:: ranlib
-* size:: size
-* strip:: strip
+* ar:: Create, modify, and extract from archives
+* ld:: See ld.info
+* nm:: List symbols from object files
+* objdump:: Display information from object files
+* ranlib:: Generate index to archive contents
+* size:: List section sizes and total size
+* strip:: Discard symbols
+* Index::
@end menu
@node ar, ld, Top, Top
@chapter ar
+@kindex ar
+@cindex archives
+@cindex collections of files
@smallexample
ar [-]@var{p}@var{mod} [ @var{membername} ] @var{archive} @var{files}@dots{}
@end smallexample
group are preserved in the archive, and may be reconstituted on
extraction.
+@cindex name length
GNU @code{ar} can maintain archives whose members have names of any
length; however, depending on how @code{ar} is configured on your
system, a limit on member-name length may be imposed (for compatibility
limit is often 15 characters (typical of formats related to a.out) or 16
characters (typical of formats related to coff).
+@cindex libraries
@code{ar} is considered a binary utility because archives of this sort
are most often used as @dfn{libraries} holding commonly needed
subroutines.
+@cindex symbol index
@code{ar} will create an index to the symbols defined in relocatable
object modules in the archive when you specify the modifier @samp{s}.
Once created, this index is updated in the archive whenever @code{ar}
If you wish, you may begin the first command-line argument with a
dash.
+@cindex operations on archive
The @var{p} keyletter specifies what operation to execute; it may be
any of the following, but you must specify only one of them:
@table @code
@item d
+@cindex deleting from archive
@emph{Delete} modules from the archive. Specify the names of modules to
be deleted as @var{files}; the archive is untouched if you
specify no files to delete.
as it is deleted.
@item m
+@cindex moving in archive
Use this operation to @emph{move} members in an archive.
The ordering of members in an archive can make a difference in how
specified place instead.
@item p
+@cindex printing from archive
@emph{Print} the specified members of the archive, to the standard
output file. If the @samp{v} modifier is specified, show the member
name before copying its contents to standard output.
If you specify no @var{files}, all the files in the archive are printed.
@item q
+@cindex quick append to archive
@emph{Quick append}; add @var{files} to the end of @var{archive},
without checking for replacement.
@code{ranlib} explicitly to update the symbol table index.
@item r
+@cindex replacement in archive
Insert @var{files} into @var{archive} (with @emph{replacement}). This
operation differs from @samp{q} in that any previously existing members
are deleted if their names match those being added.
deleted) or replaced.
@item t
+@cindex contents of archive
Display a @emph{table} listing the contents of @var{archive}, or those
of the files listed in @var{files} that are present in the
archive. Normally only the member name is shown; if you also want to
If you do not specify any @var{files}, all files in the archive
are listed.
+@cindex repeated names in archive
+@cindex name duplication in archive
If there is more than one file with the same name (say, @samp{fie}) in
an archive (say @samp{b.a}), @samp{ar t b.a fie} will list only the
first instance; to see them all, you must ask for a complete
@c recent case in fact works the other way.
@item x
+@cindex extract from archive
@emph{Extract} members (named @var{files}) from the archive. You can
use the @samp{v} modifier with this operation, to request that
@code{ar} list each name as it extracts it.
@table @code
@item a
+@cindex relative placement in archive
Add new files @emph{after} an existing member of the
archive. If you use the modifier @code{a}, the name of an existing archive
member must be present as the @var{membername} argument, before the
@var{archive} specification. (same as @samp{i}).
@item c
+@cindex creating archives
@emph{Create} the archive. The specified @var{archive} is always
created if it didn't exist, when you request an update. But a warning is
issued unless you specify in advance that you expect to create it, by
@c what???---pesch@@cygnus.com, 25jan91
@item o
+@cindex dates in archive
Preserve the @emph{original} dates of members when extracting them. If
you do not specify this modifier, files extracted from the archive
will be stamped with the time of extraction.
@item s
+@cindex writing archive index
Write an object-file index into the archive, or update an existing one,
even if no other change is made to the archive. You may use this modifier
flag either with any operation, or alone. Running @samp{ar s} on an
archive is equivalent to running @samp{ranlib} on it.
@item u
+@cindex updating an archive
Normally, @code{ar r}@dots{} inserts all files
listed into the archive. If you would like to insert @emph{only} those
of the files you list that are newer than existing members of the same
@node ld, nm, ar, Top
@chapter ld
+@cindex linker
+@kindex ld
The GNU linker @code{ld} is now described in a separate manual.
@xref{Top,, Overview,, GLD: the GNU linker}.
@node nm, objdump, ld, Top
@chapter nm
+@cindex symbols
+@kindex nm
@smallexample
nm [ -a | +debug-syms ] [ -g | +extern-only ]
@table @code
@item @var{objfiles}@dots{}
+@kindex a.out
Object files whose symbols are to be listed. If no object files are
listed as arguments, @code{nm} assumes @samp{a.out}.
@item -a
@itemx +debug-syms
+@cindex debugging symbols
Display debugger-only symbols; normally these are not listed.
@item -g
@itemx +extern-only
+@cindex external symbols
Display only external symbols.
@item -p
@itemx +no-sort
+@cindex sorting symbols
Don't bother to sort the symbols in any order; just print them in the
order encountered.
@item -s
@itemx +print-armap
-When listing symbols from archives, list the index: a mapping (stored in
-the archive by @code{ar} or @code{ranlib}) of what modules contain
-definitions for what names.
+@cindex symbol index, listing
+When listing symbols from archive members, include the index: a mapping
+(stored in the archive by @code{ar} or @code{ranlib}) of what modules
+contain definitions for what names.
@item -o
@itemx +print-file-name
+@cindex input file name
+@cindex file name
+@cindex source file name
Precede each symbol by the name of the input file where it was found,
rather than identifying the input file once only before all of its
symbols.
@item +target @var{bfdname}
@c @item +target
+@cindex object code format
Specify an object code format other than your system's default format.
@xref{objdump}, for information on listing available formats.
@c FIXME what *does* +target/no arg do?
@item -u
@itemx +undefined-only
+@cindex external symbols
+@cindex undefined symbols
Display only undefined symbols (those external to each object file).
@end table
@node objdump, ranlib, nm, Top
@chapter objdump
+@cindex object file information
+@kindex objdump
+
@smallexample
objdump [ -a ] [ -b @var{bfdname} ] [ -d ] [ -f ]
[ -h | +header ] [ -i ] [ -j @var{section} ] [ -l ]
@table @code
@item @var{objfiles}@dots{}
-The object files to be examined.
+The object files to be examined. When you specify archives,
+@code{objdump} shows information on each of the member object files.
@item -a
@c print_arelt_descr
+@cindex archive headers
If any files from @var{objfiles} are archives, display the archive
-header information (in a format similar to @samp{ls -l}).
+header information (in a format similar to @samp{ls -l}). Besides the
+information you could list with @samp{ar tv}, @samp{objdump -a} shows
+the object file format of each archive member.
@c suggest longname +target or +format or +bfd
@item -b @var{bfdname}
+@cindex object code format
You can specify a particular object-code format for your object files as
@var{bfdname}. This may not be necessary; @var{objdump} can
automatically recognize many formats. For example,
formats available with the @samp{-i} option.
@item -d
+@cindex disassembling object code
+@cindex machine instructions
Disassemble. Display the assembler mnemonics for the machine
instructions from @var{objfiles}.
@item -f
+@cindex object file header
File header. Display summary information from the overall header of
each file in @var{objfiles}.
@item -h
@itemx +header
+@cindex section headers
Header. Display summary information from the section headers of the
object file.
@item -i
+@cindex architectures available
+@cindex object formats available
Display a list showing all architectures and object formats available
for specification with @code{-b} or @code{-m}.
@c suggest longname +section
@item -j @var{name}
+@cindex section information
Display information only for section @var{name}
@c suggest longname +label or +linespec
@item -l
+@cindex source filenames for object files
Label the display (using debugging information) with the source filename
and line numbers corresponding to the object code shown.
@c suggest longname +architecture
@item -m @var{machine}
+@cindex architecture
Specify the object files @var{objfiles} are for architecture
@var{machine}. You can list available architectures using the @samp{-i}
option.
@item -r
@itemx +reloc
+@cindex relocation entries, in object file
Relocation. Print the relocation entries of the file.
@item -s
+@cindex sections, full contents
+@cindex object file sections
Display the full contents of any sections requested.
@item -t
@itemx +syms
+@cindex symbol table entries, printing
Symbol Table. Print the symbol table entries of the file.
This is similar to the information provided by the @samp{nm} program.
@item -x
+@cindex all header information, object file
+@cindex header information, all
Display all available header information, including the symbol table and
relocation entries. Using @samp{-x} is equivalent to specifying all of
-@samp{-f -a -h -r -t}.
+@samp{-a -f -h -r -t}.
@end table
@node ranlib, size, objdump, Top
@chapter ranlib
+@kindex ranlib
+@cindex archive contents
+@cindex symbol index
+
@smallexample
ranlib @var{archive}
@end smallexample
@code{ranlib} is completely equivalent to executing @samp{ar -s}.
@xref{ar}.
-@ignore
-@c FIXME vintage ranlib had options [ -t | +touch ] [ -v | +verbose ]
-@c which are gone here. Good or evil?
-
-@code{ranlib}'s options make it report on what it's doing and fake an
-update of a particular archive's index.
-
-Any command-line options must precede the archive name.
-
-The long and short forms of options, shown here as alternatives, are
-equivalent.
-
-@table @code
-
-@item -t | +touch
-You can use the ``touch'' option to fake an update of the index
-table in archives; @code{ranlib} will first set the current date for the
-index object module in the archive (to make it appear to have changed).
-
-@item -v | +verbose
-Use this option if you'd like informational messages about what
-@code{ranlib} is up to, while it loops through the specified archives.
-
-@end table
-@end ignore
-
@node size, strip, ranlib, Top
@chapter size
+@kindex size
+@cindex section sizes
+
@smallexample
size [ -A | -B | +format @var{compatibility} ]
[ +help ] [ -d | -o | -x | +radix @var{number} ]
@item -A
@itemx -B
@itemx +format @var{compatibility}
+@cindex size display format
Using one of these options, you can choose whether the output from GNU
@code{size} resembles output from System V @code{size} (using @samp{-A},
or @samp{+format sysv}, or Berkeley @code{size} (using @samp{-B}, or
@itemx -o
@itemx -x
@itemx +radix @var{number}
+@cindex size number format
+@cindex radix for section sizes
Using one of these options, you can control whether the size of each
section is given in decimal (@samp{-d}, or @samp{+radix 10}); octal
(@samp{-o}, or @samp{+radix 8}); or hexadecimal (@samp{-x}, or
octal and hexadecimal if you're using @samp{-o}.
@item +target @var{bfdname}
+@cindex object code format
You can specify a particular object-code format for @var{objfiles} as
@var{bfdname}. This may not be necessary; @var{size} can
automatically recognize many formats. @xref{objdump}, for information
@end table
-@node strip, , size, Top
+@node strip, Index, size, Top
@chapter strip
+@kindex strip
+@cindex removing symbols
+@cindex discarding symbols
+
@smallexample
strip [ -s | +strip-all ] [ -g | -S | +strip-debug ]
[ -x | +discard-all ] [ -X | +discard-locals ]
@table @code
@item -s
@itemx +strip-all
+@cindex all symbols, discarding
This is the default case: strip all symbol entries from @var{objfiles}.
@item -g
@itemx -S
@itemx +strip-debug
+@cindex debugging symbols, discarding
Discard only debugging symbol information from @var{objfiles}.
@item -x
@itemx +discard-all
+@cindex local symbols, discarding
Discard all symbols local to each file in @var{objfiles}.
@emph{WARNING:} Note that @code{+discard-all} discards only @emph{local}
symbols, in spite of its name.
begin with @samp{L}.)
@item -T @var{bfdname}
+@cindex object code format
You can specify a particular object-code format @var{bfdname} for
@var{objfiles}. This may not be necessary; @var{strip} can automatically
recognize many formats. @xref{objdump}, for information on listing
available formats.
@end table
+@node Index, , strip, Top
+@unnumbered Index
+
+@printindex cp
+
@contents
@bye
projects / binutils-gdb.git / commitdiff