Re: [Qemu-devel] [PATCH] w32: Fix build with older gcc (unresolved symbol)

[Stefan Weil]

Am 10.05.2013 22:14, schrieb Igor Mitsyanko:
> On 29.03.2013 21:20, Stefan Weil wrote:
>> The cross i586-mingw32msvc-gcc 4.4.4 from Debian Squeeze does not
>> support
>> __sync_val_compare_and_swap by default.
>>
>> Using -march=i686 fixes that and should also result in better code.
>>
>> Signed-off-by: Stefan Weil <address@hidden>
>> ---
>>
>> Maybe this modification is also needed for native gcc-4.4 and older
>> on Linux i386. If yes, we can move the new script code out of the
>> MinGW conditional code.
>>
>> Newer versions of gcc obviously use -march=i686 by default and
>> don't need the patch, but it also won't do any harm for those
>> versions.
>>
>> Stefan
>>
>
> mingw is built with --build=mingw32 and looks like it defaults to
> -march=i386 (I have gcc version 4.7.2).
> Default build on windows is broken without this patch, it should be
> applied to 1.5 probably.
>
> Tested-by: Igor Mitsyanko <address@hidden>
>

With latest QEMU, -march=i486 is used and there should be no problem.
If there still is a problem, we have to look for the reason.

Could you please post the output from configure?

Regards,
Stefan