We already had a discussion about cmake-utils.eclass and forcing verbose build log for that which was approved: http://archives.gentoo.org/gentoo-dev/msg_ce7d33748936663e84a5463fbf7f4d39.xml
Also we have bug https://bugs.gentoo.org/show_bug.cgi?id=384193 and https://bugs.gentoo.org/show_bug.cgi?id=379497 I opened a tracker https://bugs.gentoo.org/show_bug.cgi?id=429308 Some devs seem unsure about that or want to have a council vote on that https://bugs.gentoo.org/show_bug.cgi?id=429332 When I sum that up again... - we are on gentoo and need as much information as possible for backtracing, resolving bugs, checking whether CFLAGS and such have been respected - no need to tell the user to recompile with EXTRA_ECONF="--disable-silent-rules" or similar just to be able to help him - some QA checks might depend on verbose build log and are not yet implemented therefor - if people want nice build _output_ (not log), they can use --quiet-build
