ldd(1)                                                               ldd(1)

NAME
     ldd - list dynamic dependencies

SYNOPSIS
     ldd [-d | -r] file

DESCRIPTION
     The ldd command lists the pathnames 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 printing warnings for any
     unresolved symbol references that would occur if file were executed.

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

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

EXIT STATUS
     ldd prints its record of shared object pathnames 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
     nonzero 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.

SEE ALSO
     cc(1), ld(1).

     Chapter on "The C compilation system" in the "Guide to Tools for Pro-
     gramming in C".
















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