Configuring build for universal binaries from open source

Configuring for universal binaries
The first approach is to simply have configure build a universal binary, by passing in the appropriate CFLAGS and LDFLAGS environment variables. This is done simply by running

env CFLAGS="-O -g -isysroot /Developer/SDKs/MacOSX10.4u.sdk -arch i386 -arch ppc" \
LDFLAGS="-arch i386 -arch ppc" ./configure --prefix=${HOME}/Hello --disable-dependency-tracking

This is documented here:
Technical Note TN2137
Building Universal Binaries from "configure"-based Open Source Projects

After entering the commands 'make' and 'make install' you can then find the binaries in a folder called 'Hello' in your home directory. This is very useful if you don't want to install the binaries directly in your system but would rather have them isolated.
The advantage being that you can now easily use 'PackageMaker' to create a installer package ;-).