Re: [Qemu-devel] QEMU SVN on Windows 2000 :-(

[Anthony Liguori <anthony@codemonkey.ws>]

Robert Riebisch wrote:
> Hi!
>
> Unfortunately Win32 binaries built from QEMU SVN don't run on Windows
> 2000 anymore, because of missing DLL entry points in `ws2_32.dll'.
>   

Unfortunately, win2k is so old at this point, that I don't know that 
it's worth jumping through hoops to support.

If someone can come up with a simple patch (with appropriately licensed 
code), then I'd be happy to apply it.  Otherwise, I don't think not 
supporting win2k as a host is a huge loss.

Regards,

Anthony Liguori

> With the introduction of IPv6 QEMU relies on the presence of
> getaddrinfo(), getnameinfo(), and freeaddrinfo(). This is OK for Windows
> XP or later, but not for Windows 2000.
>
> From <http://msdn.microsoft.com/en-us/library/ms738520(VS.85).aspx>:
> ***
> *Support for getaddrinfo on older versions of Windows*
>
> The getaddrinfo function was added to the Ws2_32.dll on Windows XP and
> later. To execute an application that uses this function on earlier
> versions of Windows, then you need to include the Ws2tcpip.h and
> Wspiapi.h files. When the Wspiapi.h include file is added, the
> getaddrinfo function is defined to the WspiapiGetAddrInfo inline
> function in the Wspiapi.h file. At runtime, the WspiapiGetAddrInfo
> function is implemented in such a way that if the Ws2_32.dll or the
> Wship6.dll (the file containing getaddrinfo in the IPv6 Technology
> Preview for Windows 2000) does not include getaddrinfo, then a version
> of getaddrinfo is implemented inline based on code in the Wspiapi.h
> header file. This inline code will be used on older Windows platforms
> that do not natively support the getaddrinfo function.
>
> The IPv6 protocol is supported on Windows 2000 when the IPv6 Technology
> Preview for Windows 2000 is installed. Otherwise getaddrinfo support on
> versions of Windows earlier than Windows XP is limited to handling IPv4
> name resolution.
> ***
>
> This stupid little patch works for me, but it requires copyrighted file
> `Wspiapi.h' from MSVC2005, because MinGW doesn't provide such a file.
> I've tested this on Windows 2000 only with IPv4. Better solutions are
> highly appreciated.
>
> ***
> --- qemu-sockets.c.orig	Wed Jan 14 19:34:22 2009
> +++ qemu-sockets.c	Mon Feb 02 22:04:42 2009
> @@ -22,6 +22,9 @@
>  #include "qemu_socket.h"
>  #include "qemu-common.h" /* for qemu_isdigit */
>
> +#define _inline __inline /* circumvent header file issue */
> +#include <wspiapi.h>
> +
>  #ifndef AI_ADDRCONFIG
>  # define AI_ADDRCONFIG 0
>  #endif
> ***
>
> Signed-off-by: Robert Riebisch <rr@bttr-software.de>
>
> Robert Riebisch
>