Source: http://www.tangentsoftworks.com/blog/2012/11/12/how-to-prepare-your-mac-for-ios-development-with-ffmpeg-libraries/
Adapted with Info from: https://github.com/kristopherjohnson/kxmovie/blob/master/build_x264
libx264 binaries are located at: ../x264/
./configure \
--prefix=armv7 \
--enable-gpl \
--disable-ffmpeg \
--disable-ffplay \
--disable-ffprobe \
--disable-ffserver \
--enable-libx264 \
--enable-encoder=libx264 \
--enable-avresample \
--enable-cross-compile \
--sysroot="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.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=6.1 -I../x264/armv7/include" \
--extra-ldflags="-arch armv7 \
-isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk \
-miphoneos-version-min=6.1 \
-L../x264/x264-uarch/lib" --arch=arm --cpu=cortex-a9 --enable-pic
make clean && make && make install
./configure \
--prefix=armv7s \
--enable-gpl \
--disable-ffmpeg \
--disable-ffplay \
--disable-ffprobe \
--disable-ffserver \
--enable-libx264 \
--enable-encoder=libx264 \
--enable-avresample \
--enable-cross-compile \
--sysroot="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk" \
--target-os=darwin \
--cc="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc" \
--extra-cflags="-arch armv7s -mfpu=neon -miphoneos-version-min=6.1 -I../x264/armv7s/include" \
--extra-ldflags="-arch armv7s \
-isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk \
-miphoneos-version-min=6.1 \
-L../x264/x264-uarch/lib" --arch=arm --cpu=cortex-a9 --enable-pic
make clean && make && make install
./configure \
--prefix=i386 \
--enable-gpl \
--disable-ffmpeg \
--disable-ffplay \
--disable-ffprobe \
--disable-ffserver \
--enable-libx264 \
--enable-encoder=libx264 \
--enable-avresample \
--enable-cross-compile \
--sysroot="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk" \
--target-os=darwin \
--cc="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc" \
--extra-cflags="-arch i386 -I../x264/i386/include" --extra-ldflags="-arch i386 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk \
-L../x264/x264-uarch/lib" --arch=i386 --cpu=i386 --enable-pic --disable-asm
make clean && make && make install
Randomness 