Linker error after clean install

Hello all.

I just installed the latest version of qt sdk, along with the qt creator ide. I start by creating an empty qt gui application, from the templates. When i try to build, i get the following output:

Code:

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Running build steps for project dok...
Starting: c:/qt/2010.01/qt/bin/qmake.exe H:/Projects/Qt Creator/dok/dok.pro -spec win32-g++ -r 
Exited with code 0.
Starting: C:/MinGW/bin/mingw32-make.exe -w 
C:\MinGW\bin\mingw32-make.exe: Entering directory `H:/Projects/Qt Creator/dok'
C:/MinGW/bin/mingw32-make.exe -f Makefile.Debug
mingw32-make.exe[1]: Entering directory `H:/Projects/Qt Creator/dok'
g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc -mthreads -Wl -Wl,-subsystem,windows -o debug\dok.exe debug/main.o debug/mainwindow.o debug/moc_mainwindow.o -L"c:\Qt\2010.01\qt\lib" -lmingw32 -lqtmaind -lQtGuid4 -lQtCored4
mingw32-make.exe[1]: Leaving directory `H:/Projects/Qt Creator/dok'
C:\MinGW\bin\mingw32-make.exe: Leaving directory `H:/Projects/Qt Creator/dok'
c:\Qt\2010.01\qt\lib/libqtmaind.a(qtmain_win.o)(.text+0x64):../../include/QtCore/../../src/corelib/tools/qvector.h:410: undefined reference to `_Unwind_Resume'
c:\Qt\2010.01\qt\lib/libqtmaind.a(qtmain_win.o)(.text+0x12a):C:\qt-greenhouse\Trolltech\Code_less_create_more\Trolltech\Code_less_create_more\Troll\4.6\qt\src\winmain/qtmain_win.cpp:135: undefined reference to `_Unwind_Resume'
c:\Qt\2010.01\qt\lib/libqtmaind.a(qtmain_win.o)(.text$_ZN7QVectorIPcE7reallocEii[QVector<char*>::realloc(int, int)]+0x1a1):../../include/QtCore/../../src/corelib/tools/qvector.h:482: undefined reference to `_Unwind_Resume'
c:\Qt\2010.01\qt\lib/libqtmaind.a(qtmain_win.o)(.text$_ZN7QVectorIPcE7reallocEii[QVector<char*>::realloc(int, int)]+0x1dc):../../include/QtCore/../../src/corelib/tools/qvector.h:483: undefined reference to `_Unwind_Resume'
c:\Qt\2010.01\qt\lib/libqtmaind.a(qtmain_win.o)(.eh_frame+0x12): In function `Z4qMinIiERKT_S2_S2_':
../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:95: undefined reference to `__gxx_personality_v0'
collect2: ld returned 1 exit status
mingw32-make.exe[1]: *** [debug\dok.exe] Error 1
C:\MinGW\bin\mingw32-make.exe: *** [debug] Error 2
Exited with code 2.
Error while building project dok
When executing build step 'Make'

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any ideas please? I think i have everything correctly set up.

My OS is windows 7.

thanks in advance

I have exactly the same problem with qt-sdk-win-opensource-2010.02.1 on winVista 32bit. But only with certain projects, others link cleanly. Neither rebuilding qtmain_win.a nor a full reinstall of Qt+mingw changes the situation.

This is a significant bug, somebody at Qt please review!

I will let you all know if I find a workaround.

-- Tom

To me, that smells of libstdc++ not being linked with your code.

Can you upload the project somewhere?

The problem is apparently due to the fact that Qt compiles the 4.6 libraries with gcc 4.4 but still ships the Windows opensource sdk with gcc 3.5. It can be fixed by upgrading MinGW to gcc 4.4, which is easy enough to do; but don't you think Qt should do that and ship a working sdk?

I do, and have reported this as a packaging bug on the Qt tracker.

-- Tom

The SDK works out of the box and ships with GCC 4.4.

Maybe you also have GCC 3.5 somewhere and QtCreator is using that because it has a higher priority in your path?

You are right. I do have another MinGW installation, and it was gcc 3.5 until I upgraded it recently. I just reinstalled the MinGW from qt-sdk-win-opensource-2010.02.1.exe and have verified that it is indeed gcc 4.4. So I must have been running the other compiler. Sorry for the fuss.

-- Tom