Re: [Qemu-devel] [PATCH] coroutine: Fix win32 variant for older mingw32 compilers

[Stefan Weil <sw@weilnetz.de>]

Am 21.11.2012 15:38, schrieb Paolo Bonzini:
> Il 21/11/2012 15:33, malc ha scritto:
>>>>>> Leaking leader is a bit bad, but it looks ok for 1.3.
>>>> Hmm. A TLS destructor is apparently not available. Is there some "on
>>>> thread termination" callback mechanism on Windows? Didn't find one on
>>>> first glance.
>>>>
>> Dlls receive something like THREAD_DETTACH in it's startup routine or
>> something like that if my memory serves me.
> Only DLLs.
>
> But this sounds like deja-vu.  I'm pretty sure in the past we just
> decided that this compiler is not supported (of course it's bad that
> it's silent).  Stefan, do you remember the details?
>
> Paolo

Debian cross works with -mthread.The issue was discussed here:

https://bugs.launchpad.net/qemu/+bug/932487

Jan, I don't think your patch should be applied.

Current MinGW / MinGW-w64 compilers work, so those users
which compile and use QEMU on Windows won't have a problem.
With MinGW-w64, it is even possible to compile QEMU with nearly
no warnings :-)

Debian cross development is full of difficulties. Passing an extra
compiler option like -mthread is only one of these difficulties.
I updated http://wiki.qemu.org/Hosts/W32, so anybody who really
wants to run cross compilations on Debian can get more information
there.

We could add a check to configure and add -mthread automatically.
Up to now, there was no consensus whether this is wanted because
-mthread adds a library to QEMU's dependencies.

Stefan