Yeah, that was my answer -- and actually I wrote /usr/bin/true on SO but got sloppy here. I wrote that answer because I recalled it as a common idiom in autoco

Yeah, that was my answer -- and actually I wrote /usr/bin/true on SO but got sloppy here. I wrote that answer because I recalled it as a common idiom in autoconf or something -- some automake system I'd seen where the system seeks out the tools it needs and defines them as variables.