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.
6 Answers
objdump is part of binutils.
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.
If your file is 64bits, you should use otool instead of gobjdump from binutils. On Mac OSX, gobjdump is for 32bits.
1You can install it with Homebrew:
$ brew install binutils
==> Downloading
######################################################################## 100.0%
==> Pouring binutils-2.25.yosemite.bottle.tar.gz
🍺 /usr/local/Cellar/binutils/2.25: 107 files, 140M
$ which gobjdump
/usr/local/bin/gobjdumpYou 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.
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 gobjdumpMy 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)
