thanks to Damien, I finally found a way to shut up libtool and get a clean output for the build of a project: shave.

Clutter is the first project using it, and I already easily caught compiler warnings ((even without using the anal-retentive compiler flags and -Werror)) because my terminal is not full of crappy, four lines long incantations ((and even though I’m not an autotools ninja, at least I read the documentation and not just blindly copy stuff from various projects in the hope they work; so the autotools setup in Clutter is pretty much well tested so that I don’t need to worry that files get installed in a different location than expected)).

big kudos to Damien!