[FFmpeg-user] Build LGPL version of FFmpeg for Windows

[Roger Pack]

> the hint helped, but I'm still struggeling. I'm trying to compile with
> msvc. Therefore I followed the guide at:
> http://blogs.gnome.org/rbultje/2012/09/27/microsoft-visual-studio-support-in-ffmpeg-and-libav/
>
> When trying to configure, I get the following error:
> $ ./configure --toolchain=msvc
> c99wrap cl is unable to create an executable file.
> If c99wrap cl is a cross-compiler, use the --enable-cross-compile option.
> Only do this if you know what cross compiling means.
> C compiler test failed.

check config.log
(my real suggestion would be to use mingw-w64 or to cross
compile--that way works).
ref: https://github.com/rdp/ffmpeg-windows-build-helpers