configuration 1: --target-os=linux --cross-prefix=arm-linux-androideabi- --arch=arm --sysroot=/home/samuele/Scaricati/android-ndk/android-ndk-r8e-linux-x86/platforms/android-14/arch-arm --enable-small --disable-ffplay --disable-ffprobe --disable-ffserver --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --enable-libmp3lame --prefix=/home/samuele/test_FFmpeg_2.1.1_YTD_/build_arm/neon --extra-cflags='-O3 -Wall -pipe -fpic -fasm -march=armv7-a -mfpu=neon -mfloat-abi=softfp -mvectorize-with-neon-quad' --extra-ldflags=

configuration 2: --target-os=linux --cross-prefix=arm-linux-androideabi- --arch=arm --sysroot=/home/samuele/Scaricati/android-ndk/android-ndk-r8e-linux-x86/platforms/android-14/arch-arm --enable-small --disable-ffplay --disable-ffprobe --disable-ffserver --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --enable-libmp3lame --prefix=/home/samuele/test_FFmpeg_2.1.1_YTD_/build_arm/neon --prefix=/home/samuele/test_FFmpeg_2.1.1_YTD_/build_arm/armv7a --extra-cflags='-O3 -Wall -pipe -fpic -fasm -march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=softfp' --extra-ldflags=