2012/5/11 MARTIN Pierre <[email protected]>
> Dear Ruben, dear list readers,
>
> I suggest using a native MinGW-w64 toolchain to build Qt. Qt does not
>> support cross-compiling (just look at the OpenSuse or Fedora mingw-w64 Qt
>> package build scripts: they patch the hell out of Qt's build
>> infrastructure).
>>
>> Ah! But i *am* using a native MinGW-w64 toolchain when using the
>> automated build, no?
>>
> No, that's an oddity of the automated builds that they're always built as
> a cross-compiler for some reason unknown to me. You can tell by the absence
> of a plain (unprefixed) gcc.exe. in the "bin" directory.
>
> Ah! i wasn't aware of this fact, and the later is a very good trick to
> know wether the build is native or not, and this might have a "sticky" on
> the MinGW general explanations. i will keep that in mind.
>
> Also, note the eMail i have just sent to the list in answer to Kai, when
>> using SeZero's MinGW build (For compiling to / from 32 bit on MSys), it
>> seems to work. Why?
>>
> This is a native build.
>
> i understand now. Thanks for explaining.
>
> Following what Ruben just told me, i have another question. i have just
> discovered the TDM-GCC packaging. It is very sexy, as it offers
> pre-packaged binary online / offline installers.
> However:
> - Whatever mirror is selected, the *"Show Details" buttons is not active*,
> making the process opaque. But that's okay.
> - When using the *Europe -> France -> Free mirror*, the package
> *make-3.82-mingw32-bin.tar.lzma
> cannot be found on the server* (404 type error). Is Dragon part of this
> list, or is it another project mailing list i shall subscribe to to report
> the problems i encounter?
> - After installing from anonther mirror, i can see that in my installation
> folder, only g++.exe exists, no "xxx-yyy-zzz-g++.exe" and friends exist,
> only plain "g++.exe" and friends. *Does Ruben's rule applies*, and does
> that mean that the toolchain i just have installed is native?
>
Yes, TDM's toolchain is a native build. but please don't use it, it's old
(by now) and as you can see has installation problems
>
> *A last question* from my global confusion: what would be the recommended
> way of getting this so called "native" toolchain? On Ruben's version? TDM's
> version? SeZero's version? This is quite confusing :)
>
I understand the confusion, but have not found a way to alleviate the
associated stress it induces in new users.
I currently recommend using my "release" builds, as these are based on
official GCC releases, paired with the official MinGW-w64 release (2.0.3 as
of now). MinGW-w64 does not currently provide an "official" build, but
these are as close as you can get right now.
64-bit<http://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/rubenvb/release>and
32-bit<http://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win32/Personal%20Builds/rubenvb/release>targets
are catered for. I also built a Win32 to Win64 cross-compiler.
To use them, just unzip the package with something like 7-zip, and add the
mingw32/bin or mingw64/bin directory to PATH.
I regularly build Qt with this to check if all is still ok ;-).
Remember to add the -qt-style-windows* options when you call Qt's configure
or you'll get ugly Windows 95 style GUI's for all you Qt programs.
Ruben
> Thank you,
> Pierre.
>
>
>
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