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LDD(1) NetBSD General Commands Manual LDD(1)
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by Kimmo Suominen.
Based on man-cgi by Panagiotis Christias.
ldd -- list dynamic object dependencies
ldd [-ov] [-f format] program ...
ldd displays all shared objects that are needed to run the given program.
Contrary to nm(1), the list includes ``indirect'' dependencies that are
the result of needed shared objects which themselves depend on yet other
shared objects. Zero, one or two -f options may be given. The argument
is a format string passed to rtld(1) and allows customization of ldd's
output. The first format argument is used for library objects and
defaults to "\t-l%o.%m => %p\n". The second format argument is used for
non-library objects and defaults to "\t%o => %p\n".
These arguments are interpreted as format strings a la printf(3) to cus-
tomize the trace output and allow ldd to be operated as a filter more
conveniently. The following conversions can be used:
%a The main program's name (also known as ``__progname'').
%A The value of the environment variable
LD_TRACE_LOADED_OBJECTS_PROGNAME in a.out and the program name from
the argument vector from elf.
%o The library name.
%m The library's major version number.
%n The library's minor version number (a.out only, ignored in elf).
%p The full pathname as determined by rtld's library search rules.
%x The library's load address
Additionally, \n and \t are recognized and have their usual meaning.
The -o option is an alias for -f %a:-l%o.%m => %p\n, which makes ldd
behave analogously to nm -o.
The -v option turns on verbose mode.
The ldd utility exits 0 on success, and >0 if an error occurs.
ld(1), ld.elf_so(1), nm(1), rtld(1)
A ldd utility first appeared in SunOS 4.0, it appeared in its current
form in NetBSD 0.9A.
NetBSD 10.99 October 15, 2022 NetBSD 10.99