How can I install objdump on Mac OS X?

Question

I want to get the source code of a small command line tool using objdump on Mac OS X.

I've used arm-linux-objdump on Linux and find it a great tool.

Is there any way to install objdump on OS X? I've searched Google and found information about arm-apple-dawin9-objdump, but failed to find anything to download.

score 60 · Answer 1 · answered Nov 03 '10 at 06:26

60

objdump is part of binutils.

answered Nov 03 '10 at 06:26

Ignacio Vazquez-Abrams

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Homebrew has it too! :) – Adrian Petrescu Dec 07 '11 at 02:26
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I was hoping homebrew has it! Thanks! `brew install binutils` – nacho4d Sep 09 '13 at 08:37
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MacPorts binutils installs `objdump` as `gobjdump`. – Oct 29 '13 at 06:54
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`-bash: objdump: command not found` – IgorGanapolsky May 11 '16 at 21:58
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```brew install binutils``` also installs it as gobjdump – Joseph Sheedy Apr 05 '17 at 20:31

score 33 · Answer 2 · answered Nov 03 '10 at 07:13

33

If you have XCode Tools installed on your Mac, you can use the otool that comes with it. I believe it does pretty much what objdump is capable of.

answered Nov 03 '10 at 07:13

ayaz

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+1 for otool - use `otool -tV ` to disassemble – Paul R Nov 03 '10 at 08:54
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`dwarftool` also offers some similar functionality. – Mike Weller Oct 19 '12 at 07:30
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does otool have an option like objdump -S, which gives assembly output annotated with source code? Couldn't really figure out from the --help output. – rgngl Mar 13 '13 at 13:17
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`-bash: dwarftool: command not found` – IgorGanapolsky May 11 '16 at 21:59

ahuigo · Answer 3 · 2017-06-22T23:08:47.407

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If your file is 64bits, you should use otool instead of gobjdump from binutils. On Mac OSX, gobjdump is for 32bits.

edited Jun 22 '17 at 23:08

answered Sep 21 '14 at 09:26

ahuigo

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As of 2017, gobjdump 2.27 (I think I got it from homebrew?) does work well with 64 bits in macOS Sierra (10.12) – hmijail Jun 19 '17 at 14:17

score 7 · Answer 4 · answered Jul 05 '15 at 06:38

You can install it with Homebrew:

$ brew install binutils
==> Downloading https://homebrew.bintray.com/bottles/binutils-2.25.yosemite.bottle.tar.gz
######################################################################## 100.0%
==> Pouring binutils-2.25.yosemite.bottle.tar.gz
  /usr/local/Cellar/binutils/2.25: 107 files, 140M
$ which gobjdump
/usr/local/bin/gobjdump

score 2 · Answer 5 · answered Feb 02 '17 at 20:17

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You should use otool because objdump is a binutils tool for the ELF binary format on Linux and most other UNIX systems. otool is the the disassembler for MacOS's Mach-O binary format. Type $ man otool for instructions on use.

answered Feb 02 '17 at 20:17

Rian Rizvi

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score 0 · Answer 6 · answered Mar 30 '22 at 03:50

After binutils installation through brew install binutils, if you still can not find gobjdump in your $PATH, the reason perhaps is that homebrew forgot to create soft link to the binary.

$ cd /opt/homebrew/bin

// $ ls -l ../Cellar/binutils/2.37/bin/gobjdump
// lrwxr-xr-x  1 steve  admin  7 Jul 19  2021 ../Cellar/binutils/2.37/bin/gobjdump -> objdump

// change this command to fit your objdump binary path
$ link ../Cellar/binutils/2.37/bin/gobjdump  gobjdump

My environment:

$ uname -a
Darwin localhost 20.5.0 Darwin Kernel Version 20.5.0: Sat May  8 05:10:31 PDT 2021; root:xnu-7195.121.3~9/RELEASE_ARM64_T8101 arm64
$ brew --version
Homebrew 3.4.3
Homebrew/homebrew-core (git revision 1f841cb3044; last commit 2022-03-27)
Homebrew/homebrew-cask (git revision 60208d8c20; last commit 2022-03-26)

How can I install objdump on Mac OS X?

6 Answers6