How to determine which compiler has been used to compile an executable?

Question

From a compiled file, can I see which compiler has been used to generate the file?

Answer 1

Many compilers/linkers insert a .comment section in the output file which identifies them. There are also a number of more subtle behaviors you could create compiler fingerprints off of, but I know of no existing tools for this.

If you have the source, the easiest solution would be to try compiling with each compiler in question until you get a binary that matches byte-for-byte (or even closely).