Craig Henderson wrote:
I am trying to build a client program using Boost on MSVC8 with the "Disable Language Extensions" /Za compilation flag.
visual.hpp contains the following code
// disable Win32 API's if compiler extentions are
// turned off:
//
#ifndef _MSC_EXTENSIONS
# define BOOST_DISABLE_WIN32
#endif
win32.hpp contains:
#ifndef BOOST_DISABLE_WIN32
// WEK: Added
#define BOOST_HAS_FTIME
#define BOOST_WINDOWS 1
#endif
So, the preprocessor defines BOOST_DISABLE_WIN32 and doesn't define BOOST_WINDOWS. This doesn't sound right, and causes problems with Boost.ASIO where the Windows header files are conditionally included using
#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
which clearly evaluates FALSE.
I consider this a bug in the boost config compiler detection rather than the asio library. Has anyone compiled with /ZA on MSVC?
The problem is that the Windows headers depend on the language extensions. With /Za, some of them will not compile. Bo Persson