HP-UX Linker and Libraries User's Guide

Example 13 Viewing library dependencies with ldd(1)
• By default, ldd prints simple dynamic path information, including the dependencies recorded
in the executable (or the shared library) followed by the physical location where the dynamic
loader finds these libraries.
$ ldd a.out
./libx.sl => ./libx.sl
libc.2 => /lib/pa20_64/libc.2
libdl.1 => /lib/pa20_64/libdl.1
• The -v option causes ldd to print the dependency relationships along with the dynamic path
information.
$ ldd -v a.out
find library=./libx.sl; required by a.out
./libx.sl => ./libx.sl
find library=libc.2; required by a.out
libc.2 => /lib/pa20_64/libc.2
find library=libdl.1; required by /lib/pa20_64/libc.2
libdl.1 => /lib/pa20_64/libdl.1
• The -r option to causes it to analyze all symbol references and print information about
unsatisfied code and data symbols.
$ ldd -r a.out
./libx.sl => ./libx.sl
libc.2 => /lib/pa20_64/libc.2
libdl.1 => /lib/pa20_64/libdl.1
symbol not found: val1 (./libx.sl)
symbol not found: count (./libx.sl)
symbol not found: func1 (./libx.sl)
symbol not found: func2 (./libx.sl)
• The -y, <symbol> option can be used to point out the module from which the specified
symbol is being resolved. It can also be used to point out modules that refer to the specified
symbol.
$ ldd -y,bar a.out
libx.so => ./libx.so
libc.so.1 => /usr/lib/hpux32/libc.so.1
libdl.so.1 => /usr/lib/hpux32/libdl.so.1
bar (data) : needed by a.out; found in ./libx.so
bar (data) : needed by ./libx.so; found in ./libx.so
$ ldd -y,foo a.out
libx.so => ./libx.so
libc.so.1 => /usr/lib/hpux32/libc.so.1
libdl.so.1 => /usr/lib/hpux32/libdl.so.1
foo (code) : needed by a.out; found in ./libx.so
foo (code) : needed by ./libx.so; found in ./libx.so
Viewing the Size of Object File Elements with size(1)
The size command produces section size information for each section in your specified object
files. It displays the size of the text, data and bss (uninitialized data) sections with the total size of
Viewing the Size of Object File Elements with size(1) 75