(...) checking for xsltproc... (cached) /usr/bin/xsltproc checking whether gcc understands -Wall... yes checking what warning flags to pass to the C compiler... -Wall checking what language compliance flags to pass to the C compiler... ./configure: 2: ./configure: Syntax error: Unterminated quoted string
https://bugzilla.gnome.org/show_bug.cgi?id=739241
Same problem with gnome-shell-3.12
Fixed in 3.14.2 without a revbump. If anyone really wants it fixed in portage, then shout. Thanks