Determining Which Compiler Built a Win32 PE

Question

How can one determine which C or C++ compiler was used to build a particular Windows executable or DLL? Some compilers leave behind version strings in the final executable,

Answer 1

Another option is to check what CRT library the dll links to using depends.exe
MinGW and Cygwin have their own dlls which are quite obvious to recognize.
VC6 uses MSVCRT.dll usually
any newer version of VS has its version next to the dll's file name:
MSVCR90.dll - VS2008
MSVCR80.dll - VS2005
MSVCR71.dll - VS2003
MSVCR70.dll - VS2002

Don't take this list as the definitive guide since these names tend to have strange variations, especially in the area of VS2002-2003. There are also other dlls like the MFC and ATL dlls that have similar versioning scheme.

This will work as long as the PE actually depends on the CRT and it didn't link to it statically.

I think Delphi also has some DLL it links to but I'm not really sure what it is.