Which compiler, compiled this file?

Question

I am using gnu gcc and armcc to compile a few C files. How can I get the information about which compiler compiled which file?

Ex: test.cpp is being compiled by armcc or gnu gcc.

The makefile is very complicated and I am looking out for a command by which I can check which compiler compiled which file.

Any ideas?

Answer 1

Sometimes you can look at the file with a hex editor and tell if the compiler wrote its name into the file.