Hi,
This is the yearly FAQ posting about the symbols defined on C/C++ compilations
on Windows.
1) The compiler indicators:
- Mingw, Cygwin: __GNUC__
- MSVC: _MSC_VER
- Borland: __TURBOC__, __BORLANDC__
2) The CPU indicators for x86:
- Mingw, Cygwin: _X86_, __i386__
- MSVC, Borland: _M_IX86
The CPU indicators for x86_64:
- Mingw, Cygwin: __x86_64__
- MSVC: _M_X64
3) Operating system:
- Cygwin default: __CYGWIN32__
- Cygwin when the installer wants to use native Woe32 API (option -mwin32):
__CYGWIN32__, _WIN32
- Mingw: _WIN32
- MSVC: _WIN32
- Borland: __WIN32__
So, to test whether native Woe32 API is available, use
defined _WIN32 || defined __WIN32__
And to test whether native Woe32 API should be used when there is also an
equivalent POSIX API, use
(defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN32__
Bruno
References:
[1] http//predef.sourceforge.net/
[2] GNU clisp's lispbibl.d
