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Using otool (recursively) to find shared libraries needed by an app

Answer 1

+4 A:

No, you'll have to run otool repeatedly, or incorporate its parsing code (here). Don't forget about handling @executable_path.

Here it is in Python (without @executable_path, canonicalization, or filenames-with-spaces supported), since this was easier than trying to debug pseudocode:

import subprocess

def otool(s):
    o = subprocess.Popen(['/usr/bin/otool', '-L', s], stdout=subprocess.PIPE)
    for l in o.stdout:
        if l[0] == '\t':
            yield l.split(' ', 1)[0][1:]

need = set(['/Applications/iTunes.app/Contents/MacOS/iTunes'])
done = set()

while need:
    needed = set(need)
    need = set()
    for f in needed:
        need.update(otool(f))
    done.update(needed)
    need.difference_update(done)

for f in sorted(done):
    print f

Nicholas Riley 2009-10-04 23:06:00

I think running it repeatedly would probably work best. What would be a logical way of going about doing this? Having it just go through everything would make it go into an infinite loop...

macatomy 2009-10-04 23:29:18

Two sets (NSMutableSet) should do it: one set for paths you've already processed, and one set for paths you need to process. First populate the second set by running otool on the app. Then make a copy of the second set, empty it and run otool on each item in the copy. Don't forget to canonicalize paths after resolving @executable_path and before adding to a set (you can use realpath(3)).

Nicholas Riley 2009-10-04 23:55:36

This solution works :-) Thanks

macatomy 2009-10-06 19:13:06

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Using otool (recursively) to find shared libraries needed by an app

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