Re: [Mingw-cross-env-list] Link errors in SDL/Qt project

[Mark Brand]

> I'm trying to build a Qt application that uses SDL with the 
> development version of mingw-cross-env (fetches a few minutes ago).  
> It builds fine in Linux.  The project file has these entries:
>
>   TEMPLATE = app
>   CONFIG += qt release
>   LIBS += -lSDL -lSDL_mixer
>
> Builds fine with native Linux GCC/Qt/SDL, but barks out with 
> "undefined symbol" errors at the link step with mingw-cross.  The link 
> command that is generated is:
>
> i686-pc-mingw32-g++ -enable-stdcall-fixup -Wl,-enable-auto-import 
> -Wl,-enable-runtime-pseudo-reloc -Wl,-s -Wl,-subsystem,windows 
> -mthreads -Wl -o release/QTads.exe object_script.QTads.Release 
> -L"/home/realnc/opt/mingw/usr/i686-pc-mingw32/lib" -lmingw32 -lqtmain 
> -lSDL -lSDL_mixer -lQtGui -lgdi32 -lcomdlg32 -loleaut32 -limm32 
> -lwinmm -lwinspool -lmsimg32 -lQtCore -lpng -lkernel32 -luser32 
> -lshell32 -luuid -lole32 -ladvapi32 -lws2_32 -lz
>
> I am attaching the errors to this email.
...
> /home/realnc/opt/mingw/usr/i686-pc-mingw32/lib/libqtmain.a(qtmain_win.o):qtmain_win.cpp:(.text+0x1a2):
>  undefined reference to `qMain(int, char**)'
> /home/realnc/opt/mingw/usr/i686-pc-mingw32/lib/libSDL.a(SDL_dx5video.o): In 
> function `DX5_Available':
> /home/realnc/opt/mingw/tmp-sdl/SDL-1.2.14/./src/video/windx5/SDL_dx5video.c:495:
>  undefined reference to `_IID_IDirectDrawSurface3'

I suspect  libdxguid.a provides those symbols. Could you try adding 
-ldxguid to you LIBS or directly to the i686-pc-mingw32-g++ call above?

regards,

Mark