ffmpeg static build

$ ./configure --enable-gpl --prefix=$PWD/out \

--disable-shared --enable-filter=drawtext --enable-gpl --enable-nonfree \

--enable-version3 \

--arch=arm --target-os=linux \

--enable-static \

--extra-libs=-static \

--extra-cflags=--static \

--enable-cross_compile --cross_prefix=arm-xilinx-linux-gnueabi- \

--enable-neon