• By default, ffmpeg's ./configure errors out if the executable won't run

• Solution is to use a --cross-compile flag that wires out this error
• Not technically needed if you compile on an ICBM, since the ppc test executables will work

--extra-ldflags='-arch $TARGET_ARCH -isysroot /Developer/SDKs/MacOSX10.4u.sdk' --extra-cflags='-arch $TARGET_ARCH -isysroot /Developer/SDKs/MacOSX10.4u.sdk -gdwarf-2'

• We took the approach of building the native arch using the 'orthodox' build routine
• Side note: they've taken all of our build patches into their trunk

• Things to make building twice easier

• You can call configure scripts from outside their source directory and the Makefile hierarchy will be created correctly
• This means you can use a single source tree for both platforms
• You won't be constantly 'make clean'ing to do both archs
• Next: Merging single-platform static libraries