linking againts ffmpeg - Qt Creator mingw version too old?

[akos.maroy]

Hi,

I have a strange problem. I'm trying to link to ffmpeg from Qt Creator on Windows. While this sounds straightforward, it doesn't seem to work.

When trying to compile ffmpeg using the mingw that comes with QtCreator, the ffmpeg configure script says that the mingw runtime is too old.

If I compile ffmpeg with the latest mingw, and the fire up Qt Creator to compile & link againts this ffmpeg, I get the following:

../../lib/win32-mingw/lib/libavformat.a(utils.o): In function `fprintf':
c:/usr/mingw/bin/../lib/gcc/mingw32/3.4.5/../../../../include/stdio.h:246: undefined reference to `__mingw_vfprintf'
../../lib/win32-mingw/lib/libavutil.a(log.o): In function `fprintf':
c:/usr/mingw/bin/../lib/gcc/mingw32/3.4.5/../../../../include/stdio.h:246: undefined reference to `__mingw_vfprintf'
collect2: ld returned 1 exit status

../../lib/win32-mingw/lib/libavformat.a(utils.o): In function `fprintf':
c:/usr/mingw/bin/../lib/gcc/mingw32/3.4.5/../../../../include/stdio.h:246: undefined reference to `__mingw_vfprintf'
../../lib/win32-mingw/lib/libavutil.a(log.o): In function `fprintf':
c:/usr/mingw/bin/../lib/gcc/mingw32/3.4.5/../../../../include/stdio.h:246: undefined reference to `__mingw_vfprintf'
collect2: ld returned 1 exit status

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did anyone succeed with linking againts ffmpeg on windows using Qt Creator?

[test1]

This library "libmingwex.a" should be updated. I copied it from the \MinGW\lib\ folder over the Qt\2009.03\mingw\lib\ existing library and then it worked.

[akos.maroy]

This library "libmingwex.a" should be updated. I copied it from the \MinGW\lib\ folder over the Qt\2009.03\mingw\lib\ existing library and then it worked.

thanks for the tip. do you have any ideas when Qt would upgrade to a newer MinGW version?