FFmpeg make: *** [libavdevice/avfoundation.o] Error 1

I'm very new (1 weeks ago) to Mac OS environment and I have to create a iPhone apps using FFmpeg (I'm new to this, too!). This is what I've done to import FFmpeg library.

First, here's the environment:

OS: Mac OS X 10.7.5
Xcode: 4.5
FFmpeg: 2.5 (Latest update of 04/12/2014)

So I download from FFmpeg.org using command:

git clone git://source.ffmpeg.org/ffmpeg.git ~/ffmpeg

and create the folder in it:

cd ffmpeg
mkdir i386
mkdir armv7
mkdir armv7s
mkdir -p universal/lib

I download the gas-preprocessor.pl from yuvi and copied into /usr/bin and /usr/local/bin with READ/WRITE access for all.

However, I do encounter the error as title mentions during the making process of armv7 and armv7s which appear like this:

make: *** [libavdevice/avfoundation.o] Error 1

Can anyone teach me how to deal with it? Here's my configuration.

For i386: (Compilation success and I saw files and folder in i386 folder)

./configure --cc="/Applications/http://Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc" --as="/usr/local/bin/gas-preprocessor.pl /Applications/http://Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/llvm-gcc-4.2/bin/arm-apple-darwin10-llvm-gcc-4.2" --sysroot="/Applications/http://Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk" --target-os=darwin --arch=i386 --cpu=i386 --extra-cflags="-arch i386" --extra-ldflags="-arch i386 -isysroot /Applications/http://Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk"--prefix=compiled/i386 --enable-cross-compile --enable-nonfree --enable-gpl --disable-armv5te --disable-swscale-alpha --disable-doc --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-asm --disable-debug

For armv7:

./configure --cc=/Applications/http://Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc --as="/usr/local/bin/gas-preprocessor.pl /Applications/http://Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/llvm-gcc-4.2/bin/arm-apple-darwin10-llvm-gcc-4.2" --sysroot=/Applications/http://Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk --target-os=darwin --arch=arm --cpu=cortex-a8 --extra-cflags="-arch armv7" --extra-ldflags="-arch armv7 -isysroot /Applications/http://Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk" --prefix=compiled/armv7 --enable-cross-compile --enable-nonfree --enable-gpl --disable-armv5te --disable-swscale-alpha --disable-doc --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-asm --disable-debug

and for armv7s:

./configure --prefix=armv7s --as="/usr/local/bin/gas-preprocessor.pl /Applications/http://Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/llvm-gcc-4.2/bin/arm-apple-darwin10-llvm-gcc-4.2" --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --enable-avresample --enable-cross-compile --sysroot="/Applications/http://Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk" --target-os=darwin --cc="/Applications/http://Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc" --extra-cflags="-arch armv7s -mfpu=neon -miphoneos-version-min=6.0" --extra-ldflags="-arch armv7s -isysroot /Applications/http://Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk -miphoneos-version-min=6.0" --arch=arm --cpu=cortex-a9 --enable-pic

If any necessary information needed please do inform me and I will upload it A.S.A.P. Any help, comment, guideline are highly appreciated. Thanks!

Updated: This is the error I received during the making process. I have no idea but hope that it helps in configuring out problem:

CC  libavdevice/alldevices.o
CC  libavdevice/avdevice.o
CC  libavdevice/avfoundation.o
libavdevice/avfoundation.m:44: error: initializer element is not constant
libavdevice/avfoundation.m:44: error: (near initialization for ‘avf_time_base_q.den’)
libavdevice/avfoundation.m:74:5: warning: "__MAC_OS_X_VERSION_MIN_REQUIRED" is not defined
libavdevice/avfoundation.m: In function ‘add_video_device’:
libavdevice/avfoundation.m:300: warning: ISO C90 forbids mixed declarations and code
libavdevice/avfoundation.m:355: warning: ISO C90 forbids mixed declarations and code
libavdevice/avfoundation.m:364: warning: ISO C90 forbids mixed declarations and code
libavdevice/avfoundation.m: In function ‘add_audio_device’:
libavdevice/avfoundation.m:407: warning: ISO C90 forbids mixed declarations and code
libavdevice/avfoundation.m: In function ‘get_video_config’:
libavdevice/avfoundation.m:432: warning: ISO C90 forbids mixed declarations and code
libavdevice/avfoundation.m:442: warning: ISO C90 forbids mixed declarations and code
libavdevice/avfoundation.m: In function ‘get_audio_config’:
libavdevice/avfoundation.m:470: warning: ISO C90 forbids mixed declarations and code
libavdevice/avfoundation.m:480: warning: ISO C90 forbids mixed declarations and code
libavdevice/avfoundation.m: In function ‘avf_read_header’:
libavdevice/avfoundation.m:534: warning: ISO C90 forbids mixed declarations and code
libavdevice/avfoundation.m:539:5: warning: "__MAC_OS_X_VERSION_MIN_REQUIRED" is not defined
libavdevice/avfoundation.m:546: warning: ISO C90 forbids mixed declarations and code
libavdevice/avfoundation.m:554:5: warning: "__MAC_OS_X_VERSION_MIN_REQUIRED" is not defined
libavdevice/avfoundation.m:575: warning: ISO C90 forbids mixed declarations and code
libavdevice/avfoundation.m:596:5: warning: "__MAC_OS_X_VERSION_MIN_REQUIRED" is not defined
libavdevice/avfoundation.m:619:5: warning: "__MAC_OS_X_VERSION_MIN_REQUIRED" is not defined
libavdevice/avfoundation.m: In function ‘avf_read_packet’:
libavdevice/avfoundation.m:724: warning: ISO C90 forbids mixed declarations and code
libavdevice/avfoundation.m:739: warning: ISO C90 forbids mixed declarations and code
libavdevice/avfoundation.m:776: warning: ISO C90 forbids mixed declarations and code
make: *** [libavdevice/avfoundation.o] Error 1