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

In some cases you can run ldd on the binary and find out which standard library it's linked against. For example on Solaris gcc vs Sun CC vs whatever.

For C++ code, you can also dump some of the symbols, find a mangled function name, and then figure out which demangler generates the correct original name.