>> LOWER_ARCH:= ${LOWER_ARCH:C/i[4-9]86/i386/} >> MACHINE_ARCH:= ${MACHINE_ARCH:C/i[4-9]86/i386/} >Then, my LOWER_ARCH was not being set. Sorry for not being clear. I meant do the := stunt after the ?= Ie. I was suggesting :C/i[4-9]86/i386/ instead of != and sed(1). you still need a value to work with. Thanks --sjg