Currently, the evince-3.6.1 ebuild lists >=x11-libs/gtk+-3.0.2:3 as its dependency for GTK+, however, it requires the GDK_SCROLL_SMOOTH symbol, which was not introduced until GTK+ 3.4.
Steps to Reproduce:
1. emerge <x11-libs/gtk+-3.4:3
2. emerge =app-text/evince-3.6.1
Build fails with errors relating to GDK_SCROLL_SMOOTH:
ev-view.c: In function 'ev_view_scroll_event':
ev-view.c:3297:33: error: 'GDK_SCROLL_SMOOTH' undeclared (first use in this function)
ev-view.c:3297:33: note: each undeclared identifier is reported only once for each function it appears in
make: *** [libevview3_la-ev-view.lo] Error 1
make: *** Waiting for unfinished jobs....
ev-view-presentation.c: In function 'ev_view_presentation_scroll_event':
ev-view-presentation.c:1311:14: error: 'GDK_SCROLL_SMOOTH' undeclared (first use in this function)
ev-view-presentation.c:1311:14: note: each undeclared identifier is reported only once for each function it appears in
Portage should try to upgrade x11-libs/gtk+ to 3.4, or refuse to install evince-3.6.1 if this isn't possible
3.8.3 has updated deps