[Mingw-users] Error: The _WIN32_WINNT value does not match NTDDI_VERSION

[Chris A. <ro...@gm...>]

Minimal test-case:

#define _WIN32_WINNT 0x0500
#define NTDDI_VERSION 0x05000000
#include <windows.h>

I have a WinXP virtual machine on which I just installed a fresh mingw
and msys (today), in order to try to cross-compile stuff for Windows.
Failing with the subject error, because in sdkddkver.h are the
following lines:

#    if _WIN32_WINNT != OSVER(NTDDI_VERSION)
#      error The _WIN32_WINNT value does not match NTDDI_VERSION
#    endif

According to 'gcc -dM -E' on the above code, OSVER is defined thus:

#define OSVER(ver) ((ver) & OSVERSION_MASK)
#define OSVERSION_MASK 0xFFFF0000

I think possibly the right macro to use here is not OSVER, but WINNTVER:

#define WINNTVER(ver) ((ver) / 0x00010000)

With this change, the test case and the original code appear to
compile successfully. I'm not sure it's right, though; advice?

Chris Angelico