[FFmpeg-user] problem in configuration of ffmpeg in mac

[Avinash Kashyap]

Hello
   i try to configure ffmpeg library in macos. i want to use library in my app for converting flv video to mp4 format.
for configuration of ffmpeg i am using the following commands 
./configure \
--prefix=armv7 \
--disable-ffmpeg \
--disable-ffplay \
--disable-ffprobe \
--disable-ffserver \
--enable-avresample \
--enable-cross-compile \
--sysroot="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk" \
--target-os=darwin \
--cc="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc" \
--extra-cflags="-arch armv7 -mfpu=neon -miphoneos-version-min=6.0" \
--extra-ldflags="-arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk -miphoneos-version-min=6.0" \
--arch=arm \
--cpu=cortex-a9 \
--enable-pic \
but its give error
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc is unable to create an executable file.C compiler test failed.also installed macports and  download gas-preprocessor.
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i also attached the log file.
Please reply ASAP.

Thanks & Regards
Avinash kashyap