topic Re: determine C objects in Operating System - HP-UX

determine C objects

mango_1 — Fri, 19 Sep 2003 19:24:43 GMT

hello all! I want to determine the C source files that I compiled an executable with.
example:
gcc -o example main1.c sub1.c sub2.c

so I get an example exe.

Problem:
Given only the executable and not knowing which files it was compiled with. Is it possible to determine the *.c files he/she used to compile the executable?

any help is much appreciated. thanks! :)

Re: determine C objects

ranganath ramachandra — Mon, 22 Sep 2003 11:35:02 GMT

if hp cc/aCC has been used, the following commands can help with unstripped binaries:
"odump -compunit" for 32-bit SOM binaries & "elfdump -dc" for 64-bit ELF binraies.

Re: determine C objects

Kenneth Platz — Tue, 20 Jan 2004 17:17:53 GMT

It's possible if you are a little bit creative with the way you create your source files.

Add the line:

static char ident[]="@(#)foo.c";

At the top of your source file. That way, when you compile it into an object file, that string "@(#)foo.c" will be embedded within your object file, and the resulting executable. Then you can use the "what" command to extract the information from your object.

# cc -o foo foo1.c foo2.c
# what foo
foo:
$Revision: 92453-07 linker linker crt0.o B.11.33 020617 $
foo1.c
foo2.c

Hope this helps.