The ebuilds version 1.5.1 and 1.5.2 contain the entry LICENSE="LGPL-2.1". This is wrong, it should be LICENSE="BSD-2". The license information can be found on the matio homepage and also checked the COPYING file of the unpacked ebuilds. Reproducible: Always
Any progress? The only necessary change is to replace LICENSE="LGPL-2.1" with LICENSE="BSD-2" in the two ebuilds.
+ 02 Feb 2015; Justin Lecher <jlec@gentoo.org> matio-1.5.1.ebuild, + matio-1.5.2.ebuild, metadata.xml: + Fix license to BSD-2, #536294 +