Print rpath of an executable on macOS

macos command-line terminal dynamic-linking darwin

staticfloat · Sep 21, 2012 · Viewed 39.9k times · Source

I want to change the rpath of an executable using install_name_tool, but I can't figure out what the rpath is right now. install_name_tool requires both the old and the new rpath's to be given on the commandline. What command can I use to print the rpath of an executable under macOS?

Answer

First of all, understand that an executable doesn't contain a single rpath entry, but an array of one or more entries.

Second, you can use otool to list an image's rpath entries. Using otool -l, you'll get output like the following, at the very end of which are the rpath entries:

Load command 34
          cmd LC_LOAD_DYLIB
      cmdsize 88
         name /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit (offset 24)
   time stamp 2 Wed Dec 31 19:00:02 1969
      current version 1038.32.0
compatibility version 45.0.0

Load command 35
          cmd LC_RPATH
      cmdsize 40
         path @loader_path/../Frameworks (offset 12)

Look for the LC_RPATH commands and note the path under the path entry.

Print rpath of an executable on macOS

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