CODEWITHSUNDEEP
clinuxexecutabledependency-resolution
James
James

Reputation: 3752

Dependency resolution in Linux

Under Windows, I have used a program called Dependency Walker to examine the libraries the application uses. I was wondering how I can achieve this on Linux for a standard binary:

ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.0, stripped

Thanks.

Upvotes: 8

Views: 5901

Answers (4)

Mark Johnson
Mark Johnson

Reputation: 14684

Try:

ldd executable

For example:

[me@somebox ~]$ ldd /bin/ls
        linux-gate.so.1 =>  (0xb7f57000)
        librt.so.1 => /lib/tls/i686/cmov/librt.so.1 (0xb7f4c000)
        libselinux.so.1 => /lib/libselinux.so.1 (0xb7f32000)
        libacl.so.1 => /lib/libacl.so.1 (0xb7f2b000)
        libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb7ddc000)
        libpthread.so.0 => /lib/tls/i686/cmov/libpthread.so.0 (0xb7dc4000)
        /lib/ld-linux.so.2 (0xb7f58000)
        libdl.so.2 => /lib/tls/i686/cmov/libdl.so.2 (0xb7dc0000)
        libattr.so.1 => /lib/libattr.so.1 (0xb7dbb000)
[me@somebox ~]$

Note that this will only report shared libraries. If you need to find out what static libraries were linked in at compile time, that's a bit trickier, especially seeing as your executable is 'stripped' (no debugging symbols).

Upvotes: 17

Nick Bastin
Nick Bastin

Reputation: 31339

If you want something a little less raw than iteratively calling ldd and somewhat more like MSVC depends, you should try Visual-ldd. It hasn't been updated in 4 years, but it should still work given that the ELF format hasn't changed. It still won't show you individual symbols inside those libraries - for that you'll need something like nm, and I don't know of any GUI wrapper for that, unfortunately.

Upvotes: 3

sleske
sleske

Reputation: 83645

Use ldd. It will show the dynamic libraries the binary needs.

Note that the libraries themselves may in turn need more libraries. To get these, you can run ldd on the libraries you got from running ldd on the binary.

Upvotes: 1

Nick Meyer
Nick Meyer

Reputation: 40412

Use ldd

ldd /bin/sh

Upvotes: 5

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