HOWTO compile rsync version 3.x and get a universal binary that will run on 10.4.x and 10.5.x.

Note: You will need a PPC and Intel based mac running 10.4.x and the developer tools installed.

On the PPC Mac Download both the rsync source(rysnc-3.x.x.tar.gz) and patches (rsync-patches-3.x.x.tar.gz ) from http://www.rsync.samba.org. Once you have the files open up the terminal and move into the same directory you downloaded the files to. Extract the files like so.

tar xzvf rsync-3.x.x.tar.gz

tar xzvf rsync-patches-3.x.x.tar.gz

cd rsync-3.x.x

patch the source so rsync will work correctly under Mac OS X.

patch -p1 <patches/fileflags.diff
patch -p1 <patches/crtimes.diff

compile and install.

./configure
make
sudo make install

You should now have a binary of rsync in /usr/local/bin. Copy it out for later use with the Intel version.

cp /usr/local/bin/rsync ~/rsync3-ppc

Now repeat the steps above for compiling the software on the Intel Mac. Once you have both binary files together use lipo to create a single binary.

lipo -create rsync3-ppc rsync3-intel -output rsync3