BuildRequires: libstdc++-devel >= 6:4.4
BuildRequires: libxcb-devel
%{?with_system_libvpx:BuildRequires: libvpx-devel >= 1.7.0}
+BuildRequires: libwebp-devel >= 1.0.2
%{?with_clang:BuildRequires: lld}
BuildRequires: llvm-devel >= 3.9.0
# or --disable-nodejs ?
ac_add_options --with-system-nss
ac_add_options --with-system-pixman
ac_add_options --with-system-png
+ac_add_options --with-system-webp
ac_add_options --with-system-zlib
# Workaround for mozbz#1341234
ac_add_options BINDGEN_CFLAGS="$(pkg-config nspr pixman-1 --cflags)"