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"
Fixed. + 11 Nov 2012; Thomas Beierlein <tomjbe@gentoo.org> hamlib-1.2.15.ebuild, + hamlib-1.2.15.2.ebuild: + Make logs verbose (bug #442696). Thanks ago