cross building ffmpeg with libx264 and libaacplus for Android

build_ffmpeg_with_libx264_libaacplus.sh

HOST=linux-x86_64

NDK=/opt/android-ndk-r8e
PLATFORM=$NDK/platforms/android-14/arch-arm
PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.6/prebuilt/$HOST

CPU=armv7-a

PREFIX=$(pwd)/../build_android/$CPU 

./configure --target-os=linux \
--prefix=$PREFIX \
--enable-nonfree --enable-gpl --enable-version3 \
--cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
--cross-prefix=$PREBUILT/bin/arm-linux-androideabi- \
--nm=$PREBUILT/bin/arm-linux-androideabi-nm \
--arch=$CPU \
--enable-cross-compile \
--sysroot=$PLATFORM \
\
--extra-cflags="-I$(pwd)/../build_android/$CPU/include -Os -g -fpic -DANDROID -finline-limit=300 " \
--extra-ldflags="-L$PLATFORM/usr/lib -L$(pwd)/../build_android/$CPU/lib -lc -lm -ldl" \
\
--disable-shared \
--enable-static \
--disable-doc \
\
--enable-debug \
--enable-ffmpeg \
--disable-ffprobe \
\
--enable-decoder=aac \
--enable-libx264 \
--extra-libs=-laacplus \
--enable-libaacplus \
\
--disable-stripping

# make -j8
# make install