how to see the list of reference of APIs of an library in my exe

Hello,
How I can find list of references made to perticular library.
For example my exe is using printf() from libc.so. But i do not know
printf() has been references. And i want to know whether printf() is
referenced or not?
Is there any tool which lists external references
-datha

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Datha wrote:
> Hello,
> How I can find list of references made to perticular library.
> For example my exe is using printf() from libc.so. But i do not know
> printf() has been references. And i want to know whether printf() is
> referenced or not?
> Is there any tool which lists external references

The nm(1) command lists all the symbols defined or used by an object
file. The list it generates will contain the symbol name, an indicator
of whether it is defined or not, and (for library symbols) the name of
the library in which the object file thinks that the symbol is defined.

The ldd(1) command prints the shared library dependancies of an object
file. This list names each library referenced by located (but not
linked) external references.

Examples:

lpitcher@merlin:~/code/permute$ ls -l
total 16
- -rwxr-xr-x 1 lpitcher users 11377 2006-06-26 10:47 permute*
- -rw-r--r-- 1 lpitcher users 616 2006-06-26 10:47 permute.c

lpitcher@merlin:~/code/permute$ ldd permute
libc.so.6 => /lib/libc.so.6 (0x40023000)
/lib/ld-linux.so.2 (0x40000000)


lpitcher@merlin:~/code/permute$ nm permute
080495e8 D _DYNAMIC
080496b4 D _GLOBAL_OFFSET_TABLE_
080485c0 R _IO_stdin_used
w _Jv_RegisterClasses
080495d8 d __CTOR_END__
080495d4 d __CTOR_LIST__
080495e0 d __DTOR_END__
080495dc d __DTOR_LIST__
....
080484b0 T __libc_csu_init
U __libc_start_main@@GLIBC_2.0
080496d8 A _edata
080496dc A _end
080485a0 T _fini
080485bc R _fp_hw
080482a0 T _init
08048300 T _start
08048324 t call_gmon_start
080496d8 b completed.1
080496cc W data_start
08048390 t frame_dummy
08048464 T main
080496d4 d p.0
080483f9 T permute
U printf@@GLIBC_2.0
080483c4 T rotate
U strlen@@GLIBC_2.0


HTH
- --
Lew Pitcher
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