I've been trying to build a LGPL copy of ffmpeg and I have tried various different configure methods. I downloaded the latest source from the ffmpeg site and used the following simple configure 

```
./configure --enable-memalign-hack --enable-pthreads --enable-shared --disable-static

```

However every time I try to build it I only end up with "avdevice-53.dll" and the error message like this 

```
install: cannot stat 'libavdevice/avdevice.lib' : No such file or directory
make: *** [install-libavdevice-shared] Error 1

```

What am I doing wrong?