cant compile lame + ios5.1 + ffmpeg

./configure  --enable-static \
--disable-shared --enable-pic \
--sysroot="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk" \
--extra-ldflags="-arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk  -miphoneos-version-min=5.1" \
--enable-debug \
--extra-cflags="-arch armv7 -mfpu=neon -miphoneos-version-min=5.1" \
--enable-cross-compile \
--arch=arm --target-os=darwin \
--cc="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc" \
--cpu=cortex-a8 \
--enable-gpl \
--enable-debug \
--enable-small \
--disable-asm \
--enable-libmp3lame