Removing dependencies for mingwm10.dll and libgcc_s_dw2-1.dll,static linking?

[Talei]

Compile statical qt, first edit %qtdir%\mkspecs\win32-g++\qmake.conf and change

QMAKE_LFLAGS        = -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc
QMAKE_LFLAGS        = -static  -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc

QMAKE_LFLAGS        = -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc
QMAKE_LFLAGS        = -static  -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc

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then recompile using

cd %qtdir%
configure -static -release -no-exceptions -[other parameters like -mmx -sse -sse2 -3dnow etc...]
make sub-src

cd %qtdir%
configure -static -release -no-exceptions -[other parameters like -mmx -sse -sse2 -3dnow etc...]
make sub-src

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important here is no-exceptions that tells to link mingwm10.dll. This command compile qt in release mode, add -debug if you want that to. Also properly set Path on windows env. That way everything works fine, assuming configure is success.
Your project is then LGPL, that means if some one who buy/download your app ask you for sorce code you need to provide it to them. I don't know if mingw allso gave you some restriction, from license point of view.