Build scripts for ffmpeg on iPhone SDK 3.0 (and iPhone Simulator SDK).

Scripts

• build-ffmpeg: Build script for ffmpeg; Run this first and then combine-libs

• combine-libs: Creates universal binaries; Runs lipo -create on each of the ffmpeg static libs

• build-x264: x264 build scripts; Run these before normal build script to include x264 support

• build-xvid: xvid build scripts; Run these before normal build script to include xvid support

• build-vorbis: xvid build scripts; Run these before normal build script to include xvid support

You can set the ARCHS environment variable to limit which architectues

e.g. export ARCHS="armv7 i386"

You can create build-local to customise your build environemnt and ffmpeg-options to set the configure options for ffmpeg. See build-local.example and ffmpeg-conf.example for examples.

Background

For background, follow this thread: http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2009-October/076618.html

To make lipo'able libraries, you need to use gcc-4.2 with extra cflags instead of the specific arm-apple-darwin10-gcc-4.2.1 compiler.

The armv6 arch doesn't seem to be working properly so you can force building via armv7 on your 3GS until we figure that out.

X264

For x264 support in ffmpeg, run those build scripts first, and the ffmpeg build scripts will include it.

Gas preprocessor

Uses a gas preprocessor via http://github.com/yuvi/gas-preprocessor/