Get list of source files (and locations) from binary

Question

I'm working in a linux distro. I'm writing a C/C++ program that requires a list of source files that a binary (executable) was compiled with. I compiled the binary using GCC with the -g flag, of course. Using gdb I found out the format of the binary is DWARF2:

(gdb) info source
Current source file is src/main.cpp
Compilation directory is /path/to/source
Located in /path/to/source/src/main.cpp 
Contains 43 lines.
Source language is c++.
Compiled with DWARF 2 debugging format.
Does not include preprocessor macro info.

Using objdump or elfread I see the information that I need:

bash> objdump -W binary
...
The File Name Table:
  Entry Dir Time    Size    Name
  1 1   0   0   main.cpp
  2 2   0   0   curses.h
  3 3   0   0   tprint.h
  4 3   0   0   twindow.h
  5 4   0   0   locale.h
...

Using dwarfdump I see that the variables of interest are: DW_AT_comp_dir and DW_AT_decl_file. Using a simple bash script (a few grep and sed calls) I was able to get the source list. What I would like to do, is get this source list from within a C/C++ program. For this purpose I have installed libdwarf, but with lack of any usage examples I'm unable to easily implement what I want.

My questions are: 1) Could someone provide a C/C++ example that reads debug information from a binary? It does not have to be with libdwarf if there are other libraries that can do this. 2) Can gdb provide a source list? Eventually I would like to build my own interface to gdb and scroll though available source files.

Regards

Answer 1

Can gdb provide a source list?

Yes: info sources