Re: [Qemu-devel] Re: [PATCH] mingw32: Fix definitions for PRId64, PRIx64, PRIu64, PRIo64

[Mark Cave-Ayland <mark.cave-ayland@siriusit.co.uk>]

On 30/01/11 22:14, Blue Swirl wrote:

> Well, mine doesn't. The change was introduced in mingw-runtime 3.15,
> which was released in September 2008, but Debian still hasn't updated
> from 3.13. Maybe other distros are not so lagging and someone who
> wishes to build QEMU on Windows is not pampered with distro support
> for MinGW anyway. Perhaps a configure time check should be added?

FWIW anyone using MingW now should be using the new GCC 4.5 based builds 
with the associated runtime rather than anything that old. I suspect 
most people using MingW for anything serious will be doing this already.

I think adding the configure check would be the best solution here.

>> QEMU defines __USE_MINGW_ANSI_STDIO, and __mingw_vfprintf
>> understands C9x standard length specifiers.

> BTW, MinGW FAQ page http://www.mingw.org/wiki/FAQ still mentions that
> %ll formats are not supported.

Since MingW uses the MSVCRT then by default it won't accept %ll, but my 
understanding is that Stefan is correct, i.e. defining 
__USE_MINGW_ANSI_STDIO causes MingW to use an internal 
standards-compliant implementation instead of the in-built MSVCRT 
version that *does* understand these extras.


HTH,

Mark.

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Mark Cave-Ayland - Senior Technical Architect
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