In a past life, the mega-but-autogenerated Makefile I helped maintain would store the executed command and only echo it if the command failed. And we logged ev

In a past life, the mega-but-autogenerated Makefile I helped maintain would store the executed command and only echo it if the command failed. And we logged everything to file, so you got nice output but all the info was there if we needed it. Didn't take that long to work out how to do it, once we'd decided it would be a nice thing to have.