This seemed to work in compiling CUPS on OS X Leopard.
./configure --enable-pie --disable-pap --with-archflags="-arch x86_64 -arch i386" --with-ldarchflags="-arch x86_64 -arch i386" --with-adminkey="system.print.admin" --with-operkey="system.print.operator" --with-pam-module=opendirectory --disable-bannertops --disable-pdftops --disable-texttops