[Ffmpeg-devel] Win32 unresolved external symbol

[Jan-Willem Mulder]

I never used anything else then mingw to compile ffmpeg. Using latest mingw 
/ msys and a 2 weeks old ffmpeg from cvs (before libavutil was added). It is 
compiled as a shared library used on the xbox btw.

On 8/31/05, Michel Bardiaux <mbardiaux at mediaxim.be> wrote: 
> 
> imnotmork_listas at area3.net wrote:
> > a3bm() {
> >
> > Hi!
> >
> > I'm trying to compile FFmpeg under windows to use it within MSVC 7.
> >
> > I'm getting this errors when i try to link the compiled libs. (I'll
> > put just a few, 'cause there should be a global solution).
> >
> > "Linking...
> > Creating library Debug/WaveEffect.lib and object Debug/WaveEffect.exp
> > avcodec.lib(
> > ) : error LNK2001: unresolved external symbol ___divdi3 (...)
> > avcodec.lib(ratecontrol.o) : error LNK2019: unresolved external symbol 
> __alloca referenced in function _modify_qscale (...)
> > avcodec.lib(mpeg12.o) : error LNK2019: unresolved external symbol 
> ___umoddi3 referenced in function _mpeg1_encode_picture_header(...)
> > avcodec.lib(ratecontrol.o) : error LNK2019: unresolved external symbol 
> ___fixunssfdi referenced in function _ff_rate_estimate_qscale
> > "
> > This are 35 linker errors. :)
> >
> > Can anybody give a clue about it?
> >
> > }
> >
> You have to add libgcc.a to the build (mine is in
> C:\MinGW\lib\gcc-lib\mingw32\3.2)
> 
> The section "6.3.1 Native Windows Compilation" in the doc is in need of
> some serious rewriting! I think I have all the necessary info for the
> Mingw+MSVC combo, but has anyone actually compiled using Mingw only and
> a recent CVS?
> 
> --
> Michel Bardiaux
> R&D Director
> T +32 [0] 2 790 29 41
> F +32 [0] 2 790 29 02
> E mailto:mbardiaux at mediaxim.be
> 
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