commit 403efe0e7675935d58b87152dce1cf7a5588ca82 Author: Mike Frysinger <vapier@gentoo.org> Date: Mon Oct 12 16:59:37 2015 -0400 profiles: add ELIBC=bionic settings added description and mask for elibc_bionic but did not add it to USE_EXPAND_VALUES_ELIBC, therefore rendering the flag non-implicit.
commit 665cf31f7df0f468d0f3a2dd13b4e8c1ae3fffb9 Author: Michał Górny <mgorny@gentoo.org> AuthorDate: Fri Jun 17 09:23:59 2016 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: Fri Jun 17 09:26:32 2016 profiles: Add elibc_bionic to valid ELIBC values, #584290