Hmm... Gentoo devs decided to patch glibc in order to remove the include. At the same time they lean that applications (25+ based on the incomplete list) should be fixed to use sys/sysmacros.h. There's no justification and the manual does not support this :-( To make it even more strange the patch isn't alongside the glibc-2.23.ebuild in the repo. Am I looking at the wrong repo ? Can anyone share a link with discussion behind this decision ?