ldd(1)                 UNIX System V(C Development Set)                  ldd(1)


NAME
      ldd - list dynamic dependencies

SYNOPSIS
      ldd [-d | -r] file

DESCRIPTION
      The ldd command lists the path names of all shared objects that would be
      loaded as a result of executing file.  If file is a valid executable but
      does not require any shared objects, ldd will succeed, producing no
      output.

      ldd may also be used to check the compatibility of file with the shared
      objects it uses.  It does this by optionally printing warnings for any
      unresolved symbol references that would occur if file were executed.  Two
      options govern this mode of ldd:

      -d    Causes ldd to check all references to data objects.

      -r    Causes ldd to check references to both data objects and functions.

      Only one of the above options may be given during any single invocation
      of ldd.

SEE ALSO
      cc(1), ld(1)
      The ``C Compilation System'' chapter in the Programmer's Guide: ANSI C
      and Programming Support Tools

DIAGNOSTICS
      ldd prints its record of shared object path names to stdout.  The
      optional list of symbol resolution problems are printed to stderr.  If
      file is not an executable file or cannot be opened for reading, a non-
      zero exit status is returned.

NOTES
      ldd doesn't list shared objects explicitly attached via dlopen(3X).

      ldd uses the same algorithm as the dynamic linker to locate shared
      objects.














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