The problem is related to automake but I can't dig into it.
Created attachment 226839 [details] buildlog
Created attachment 226841 [details] automake.out
Created attachment 226843 [details] emerge --info
missing or incorrent gtk-doc/gtk-doc-am dependency, which version of these do you have ?
dev-util/gtk-doc-am-1.11 and dev-util/gtk-doc is not installed
(In reply to comment #5) > dev-util/gtk-doc-am-1.11 and dev-util/gtk-doc is not installed > Works here after adding dev-util/gtk-doc-am to package.keywords.
Confirmed. With dev-util/gtk-doc-am-1.13 it works like a charm :)
(In reply to comment #7) > Confirmed. > > With dev-util/gtk-doc-am-1.13 it works like a charm :) > Yep, works!
Just fixed. Thanks for reporting