Flag to check whether the compiler is gcc/mingw or VC++ cl? [duplicate]

This question already has answers here: Closed 11 years ago.

Possible Duplicate:

Detect compiler with #ifdef

Greetings all,

I've been working on a C++ project using gcc on linux and mingw on windows.Now I want to use VC++ cl compiler on Windows. I was to keep the same source code tree only change the compiler specific logic like:

#ifdef VC_CL_COMPILER
 //do vc++ related
#elif MINGW_FLAG
 //do mingw related
#elseif GCC_FLAG
  //do gc related    
#endif

Anyway tips on doing this?开发者_StackOverflow

---

Compilers usually have a predefined macro for this.

#if defined(__GCC__)
  //do gcc related
#elif defined(_MSC_VER)
  //do msvc related
#else

#endif