fcaps.eclass is using group name 'root' which is not available on BSD system. Instead you can use "0", or $(id -g -n 0) if you'd prefer "group name"
Index: fcaps.eclass =================================================================== RCS file: /var/cvsroot/gentoo-x86/eclass/fcaps.eclass,v retrieving revision 1.8 diff -u -r1.8 fcaps.eclass --- fcaps.eclass 27 Jun 2013 01:18:57 -0000 1.8 +++ fcaps.eclass 13 Apr 2014 00:16:44 -0000 @@ -80,7 +80,7 @@ # Process the user options first. local owner='root' - local group='root' + local group=$(id -g -n 0) local mode='4711' local caps_mode='711'
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