Disclaimer: this bug has been filed in a semi-automated manner. When emerging the package dev-util/valgrind-3.7.0-r4, the following elog messages are displayed: * Valgrind will not work if glibc does not have debug symbols. * To fix this you can add splitdebug to FEATURES in make.conf * and remerge glibc. See: * https://bugs.gentoo.org/show_bug.cgi?id=214065 * https://bugs.gentoo.org/show_bug.cgi?id=274771 * https://bugs.gentoo.org/show_bug.cgi?id=388703 Such messages should only be displayed when the package is a new install. These situations can be checked in the ebuild as follows: if ! has_version 'dev-util/valgrind'; then See the tracker bug 440214 for more details.
I'm not sure this is such a good idea. I don't see a problem with repeating this message each time you install valgrind.