Epiphany 3.8.0 (currently hardmasked for Gnome 3.8) lacks libwnck as a dependency. It compiles and runs fine once this is added manually. checking for DEPENDENCIES... no configure: error: Package requirements ( glib-2.0 >= 2.35.6 gmodule-2.0 gthread-2.0 gio-unix-2.0 >= 2.35.6 gtk+-3.0 >= 3.7.10 gtk+-unix-print-3.0 >= 3.7.10 x11 libwnck-3.0 libxml-2.0 >= 2.6.12 libxslt >= 1.1.7 webkit2gtk-3.0 >= 1.11.92 libsoup-2.4 >= 2.41.3 libsecret-1 >= 0.14 gnome-desktop-3.0 >= 2.91.2 gsettings-desktop-schemas >= 0.0.1 libnotify >= 0.5.1 sqlite3 gcr-3 >= 3.5.5 avahi-gobject >= 0.6.22 avahi-client >= 0.6.22 ) were not met: No package 'libwnck-3.0' found
fixed in 3.8.1, thanks