[Releasing] Updating the mingw version for 5.4 (CI/packaging)

[Koehne Kai]

> -----Original Message-----
> From: releasing-bounces+kai.koehne=digia.com at qt-project.org
> [mailto:releasing-bounces+kai.koehne=digia.com at qt-project.org] On Behalf
> Of Massimo Belgrano
> Sent: Saturday, September 27, 2014 7:12 PM
> To: releasing at qt-project.org
> Subject: Re: [Releasing] Updating the mingw version for 5.4 (CI/packaging)
> 
> Koehne Kai <Kai.Koehne at ...> writes:
> >
> > Because it's not supported by gcc for 32 bit. We've the choice between
> dwarf and sjlj. We first tried SJLJ (in
> > 5.0.x releases) because it also works with native Windows stack frames
> in the exception unwind stack, but
> > that was carrying such a big overhead that we switched to dwarf in later
> releases.
> >
> 
> Personally, I'm most interested in the x86 build with SEH exceptions
> 
> afaik follow link is 4.9.1 with seh
> 
> http://sourceforge.net/projects/mingw-
> w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/mingw-
> builds/4.9.1/threads-win32/seh/

Right, a 64 bit build of MinGW is an often requested feature. Maybe we should consider finally providing packages for it too ...  I don't think we should drop the 32 bit build though: 32 bit Windows installations are AFAIK still pretty common. 

To come back to the original proposal: Are there any objections against updating the _32 bit_ toolchain to i686-4.9.1-release-posix-dwarf-rt_v3-rev1.7z ? If not I'd like to suggest to do the update ASAP.

Regards


Kai