OTOOL(1)OTOOL(1)NAMEotool - object file displaying tool
SYNOPSISotool [ option ... ] [ file ... ]
DESCRIPTION
The otool command displays specified parts of object files or
libraries. If the, -m option is not used, the file arguments may be of
the form libx.a(foo.o), to request information about only that object
file and not the entire library. (Typically this argument must be
quoted, ``libx.a(foo.o)'', to get it past the shell.) Otool under‐
stands both Mach-O (Mach object) files and universal file formats.
Otool can display the specified information in either its raw (numeric)
form (without the -v flag), or in a symbolic form using macro names of
constants, etc. (with the -v or -V flag).
At least one of the following options must be specified:
-a Display the archive header, if the file is an archive.
-S Display the contents of the `__.SYMDEF' file, if the file is an
archive.
-f Display the universal headers.
-h Display the Mach header.
-l Display the load commands.
-L Display the names and version numbers of the shared libraries
that the object file uses. As well as the shared library ID if
the file is a shared library.
-D Display just install name of a shared library.
-s segname sectname
Display the contents of the section (segname,sectname). If the
-v flag is specified, the section is displayed as its type,
unless the type is zero (the section header flags). Also the
sections (__OBJC,__protocol), (__OBJC,__string_object) and
(__OBJC,__runtime_setup) are displayed symbolically if the -v
flag is specified.
-t Display the contents of the (__TEXT,__text) section. With the
-v flag, this disassembles the text. And with -V, it also sym‐
bolically disassembles the operands.
-d Display the contents of the (__DATA,__data) section.
-o Display the contents of the __OBJC segment used by the Objec‐
tive-C run-time system.
-r Display the relocation entries.
-c Display the argument strings (argv[] and envp[]) from a core
file.
-I Display the indirect symbol table.
-T Display the table of contents for a dynamically linked shared
library.
-R Display the reference table of a dynamically linked shared
library.
-M Display the module table of a dynamically linked shared library.
-H Display the two-level namespace hints table.
-G Display the data in code table.
-C Display the linker optimization hints (-v for verbose mode can
also be added).
The following options may also be given:
-p name
Used with the -t and -v or -V options to start the disassembly
from symbol name and continue to the end of the (__TEXT,__text)
section.
-v Display verbosely (symbolically) when possible.
-V Display the disassembled operands symbolically (this implies the
-v option). This is useful with the -t option.
-X Don't print leading addresses or headers with disassembly of
sections.
-q Use the llvm disassembler when doing disassembly, this is avail‐
able for the x86 and arm architectures. This is the default.
-mcpu=arg
When doing disassembly using the llvm disassembler use the cpu
arg.
-function_offsets
When doing disassembly print the decimal offset from the last
label printed.
-j When doing disassembly print the print the opcode bytes
of the instructions. -Q Use otool(1)'s disassembler when
doing disassembly.
-arch arch_type
Specifies the architecture, arch_type, of the file for
otool(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 archi‐
tecture, if the file contains it; otherwise, all archi‐
tectures in the file are shown.
-m The object file names are not assumed to be in the ar‐
chive(member) syntax, which allows file names containing
parenthesis.
SEE ALSOinstall_name_tool(1), dyld(1) and libtool(1)Apple, Inc. November 21, 2013 OTOOL(1)
