[Qt-interest] Qt 4.6, Qt Creator 1.3 and previews of new APIs and Maemo 5 port released

[Thiago Macieira]

Em Terça-feira 01 Dezembro 2009, às 18:46:16, Mihail Naydenov escreveu:
> I fail to compile a simple, QtCreator generated, GUI project (Qt4 GUI
>  Application)
> 
> e:\Qt\2009.05\qt\lib/libqtmaind.a(qtmain_win.o): In function `WinMain at 16':
> C:\qt-greenhouse\Trolltech\Code_less_create_more\Trolltech\Code_less_create
> _more\Troll\4.6\qt\src\winmain/qtmain_win.cpp:93: undefined reference to
>  `_Unwind_Resume'
>  C:\qt-greenhouse\Trolltech\Code_less_create_more\Trolltech\Code_less_creat
> e_more\Troll\4.6\qt\src\winmain/qtmain_win.cpp:135: undefined reference to
>  `_Unwind_Resume'
>  e:\Qt\2009.05\qt\lib/libqtmaind.a(qtmain_win.o):C:\qt-greenhouse\Trolltech
> \Code_less_create_more\Trolltech\Code_less_create_more\Troll\4.6\qt\src\win
> main/../../include/QtCore/../../src/corelib/tools/qvector.h:481: undefined
>  reference to `_Unwind_Resume'
>  e:\Qt\2009.05\qt\lib/libqtmaind.a(qtmain_win.o):C:\qt-greenhouse\Trolltech
> \Code_less_create_more\Trolltech\Code_less_create_more\Troll\4.6\qt\src\win
> main/../../include/QtCore/../../src/corelib/tools/qvector.h:482: undefined
>  reference to `_Unwind_Resume'
>  e:\Qt\2009.05\qt\lib/libqtmaind.a(qtmain_win.o):qtmain_win.cpp:(.eh_frame+
> 0x12): undefined reference to `__gxx_personality_v0' collect2: ld returned
>  1 exit status

Qt 4.6's Windows MinGW binaries are built with MinGW 4.4, which is binary-
incompatible with the 3.4 previously used when it comes to exceptions.

The previous 3.4 solution used the older setjmp/longjmp method (SJLJ) that has 
runtime performance penalties even if no exceptions are thrown. The newer 
version uses the new eh_spec specified in the Itanium C++ ABI.

So you have to upgrade your mingw if you want to use our precompiled binaries. 
If you cannot do that, you can always rebuild Qt 4.6 from the sources using 
your installed compiler.

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
  Senior Product Manager - Nokia, Qt Development Frameworks
      PGP/GPG: 0x6EF45358; fingerprint:
      E067 918B B660 DBD1 105C  966C 33F5 F005 6EF4 5358
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