After trying to upgrade guvcview from 1.7.3 to 2.0.1, the compile failed with the following: guvcview-gui_gtk3.o: In function `gui_attach_gtk3': gui_gtk3.c:(.text+0x1623): undefined reference to `gtk_button_set_always_show_image' gui_gtk3.c:(.text+0x1685): undefined reference to `gtk_button_set_always_show_image' gui_gtk3.c:(.text+0x16f5): undefined reference to `gtk_button_set_always_show_image' Looking at gtk3 developer docs @ https://developer.gnome.org/gtk3/stable/GtkButton.html#gtk-button-set-always-show-image, it seems that mentioned function is only available on gtk 3.6 and later. I'm still at version 3.4.4, so my best guess is that RDEPEND x11-libs/gtk+:3 should include minimal gtk version of 3.6.
+ 02 Jan 2015; Pacho Ramos <pacho@gentoo.org> guvcview-2.0.1.ebuild: + Newer gtk+ is needed (#532596 by Uros) +