The proposed solution is in the tracker. If this is an autotools based package, and '--disable-silent-rules' doesn't work, you can try to add MAKEOPTS+=" V=1"
+ 30 Nov 2012; Sébastien Fabbro <bicatali@gentoo.org> djbfft-0.76-r1.ebuild: + Slightly more verbose build, bug #443142 + not worth doing more.