build: add explicit architecture check
build: add explicit architecture check

When doing a unified cross-compile, the target will always exist, but
the architecture will not be the same.

harlanhaskins/swift,jmgc/swift,benlangmuir/swift,xwu/swift,karwa/swift,xwu/swift,hooman/swift,karwa/swift,jmgc/swift,gribozavr/swift,roambotics/swift,airspeedswift/swift,parkera/swift,hooman/swift,hooman/swift,tkremenek/swift,glessard/swift,atrick/swift,atrick/swift,allevato/swift,harlanhaskins/swift,atrick/swift,xwu/swift,parkera/swift,JGiola/swift,roambotics/swift,jmgc/swift,gregomni/swift,tkremenek/swift,karwa/swift,JGiola/swift,glessard/swift,apple/swift,allevato/swift,stephentyrone/swift,lorentey/swift,ahoppen/swift,lorentey/swift,harlanhaskins/swift,ahoppen/swift,allevato/swift,CodaFi/swift,harlanhaskins/swift,aschwaighofer/swift,jmgc/swift,apple/swift,JGiola/swift,hooman/swift,aschwaighofer/swift,allevato/swift,aschwaighofer/swift,tkremenek/swift,CodaFi/swift,nathawes/swift,jckarter/swift,atrick/swift,jmgc/swift,CodaFi/swift,glessard/swift,tkremenek/swift,roambotics/swift,gregomni/swift,tkremenek/swift,stephentyrone/swift,benlangmuir/swift,parkera/swift,jmgc/swift,hooman/swift,hooman/swift,nathawes/swift,stephentyrone/swift,roambotics/swift,nathawes/swift,rudkx/swift,rudkx/swift,stephentyrone/swift,stephentyrone/swift,stephentyrone/swift,CodaFi/swift,aschwaighofer/swift,xwu/swift,airspeedswift/swift,harlanhaskins/swift,rudkx/swift,apple/swift,nathawes/swift,lorentey/swift,atrick/swift,CodaFi/swift,lorentey/swift,airspeedswift/swift,parkera/swift,CodaFi/swift,ahoppen/swift,gregomni/swift,lorentey/swift,airspeedswift/swift,airspeedswift/swift,tkremenek/swift,parkera/swift,allevato/swift,hooman/swift,benlangmuir/swift,harlanhaskins/swift,ahoppen/swift,parkera/swift,rudkx/swift,CodaFi/swift,jckarter/swift,gribozavr/swift,gregomni/swift,aschwaighofer/swift,parkera/swift,allevato/swift,harlanhaskins/swift,aschwaighofer/swift,xwu/swift,gribozavr/swift,gribozavr/swift,allevato/swift,karwa/swift,JGiola/swift,rudkx/swift,glessard/swift,lorentey/swift,jckarter/swift,airspeedswift/swift,xwu/swift,jckarter/swift,benlangmuir/swift,nathawes/swift,glessard/swift,gribozavr/swift,lorentey/swift,atrick/swift,karwa/swift,karwa/swift,apple/swift,parkera/swift,jckarter/swift,stephentyrone/swift,glessard/swift,gribozavr/swift,lorentey/swift,karwa/swift,karwa/swift,gregomni/swift,tkremenek/swift,gribozavr/swift,roambotics/swift,ahoppen/swift,benlangmuir/swift,aschwaighofer/swift,jmgc/swift,jckarter/swift,xwu/swift,JGiola/swift,gregomni/swift,nathawes/swift,gribozavr/swift,airspeedswift/swift,apple/swift,benlangmuir/swift,apple/swift,rudkx/swift,ahoppen/swift,JGiola/swift,roambotics/swift,nathawes/swift,jckarter/swift