"failed to find valid object file", but which object file? (using static libraries)

[Bram Kuijper <a.l.w.kuijper@rug.nl>]

Hi all,

as a newbie, I am debugging a program which uses a number of self-made 
static libraries. When running (gdb) start, the first message I get is:

Failed to read a valid object file image from memory.
0x08048d15 in main ()

Is there any way to find _which_ object file has failed to be read in?

A simple ldd ./program will only give me a listing of standard linux 
shared libraries, whereas no static libraries are displayed (I presume 
the error is in one of my self-made static libraries).

Can one point to more information with which program I can find out 
which static libraries are included?

thanks in advance,

Bram