What is the clang analogue of ldd?

Question

How do I find out what DLLs an executable depends on?

On systems with the GNU development toolchain (gcc &c) I use ldd for that, but what about the clang systems, like, e.g., Mac OS X (which does not have ldd)?

Muriate

Have you tried ldd ? The OS must be able to figure out the libraries needed, so clang and gcc mustdo pretty much the same thing. – Concerted

@MSalters: macosx does not have ldd – Muriate

Eh, it's apparently otool -L. The point I failed to make was that the compiler doesn't matter (there's a gcc port for MacOSX) – Concerted

@MSalters: please turn your comment into an answer so that I can accept it and close the question. Thanks! – Muriate

Answer 1

On Mac OSX, you'd use otool -L instead of ldd. This works regardless of the compiler you used. Other operating systems may have yet other tools; e.g. on Windows you'd use Dependency Walker.

Concerted

Also, for inspecting Linux binaries on a macOS, greadelf from MacPorts can be used, as well as nm: unix.stackexchange.com/a/418357/43390, also relevant to: https://mcmap.net/q/475972/-macosx-which-dynamic-libraries-linked-by-binary/1959808. When trying otool -L for a Linux executable, an error was raised "object is not a Mach-O file type.". – Sansone

Answer 2

llvm-readelf ---needed-libs is the clang analogue of ldd. Here's is the official documentation

~/weechat $ llvm-readelf --needed-libs bin/weechat
NeededLibraries [
  libc.so
  libcurl.so
  libdl.so
  libgcrypt.so
  libgnutls.so
  libgpg-error.so
  libiconv.so
  libm.so
  libncursesw.so.6
]

Peptidase

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