This is a good point. I've been using Gentoo since early 2004 (the dreaded Pentium IV era, Lol). Lately, I run into this with dev-lang/tcl only being need to build dev-db/sqlite. I actually think it's pretty weird that software intended to be as widely used as sqlite with as much of a free base of supporting devs doesn't just do the extra effort to use a Makefile.