URL: https://www.mozilla.org/firefox/
BuildRequires: OpenGL-devel
BuildRequires: alsa-lib-devel
-BuildRequires: automake
BuildRequires: autoconf2_13
+BuildRequires: automake
BuildRequires: bzip2-devel
BuildRequires: cairo-devel >= 1.10.2-5
BuildRequires: cargo
+%{?with_clang:BuildRequires: clang}
BuildRequires: dbus-glib-devel >= 0.60
BuildRequires: fontconfig-devel >= 1:2.7.0
BuildRequires: freetype-devel >= 1:2.1.8
-BuildRequires: gcc-c++ >= 6:4.4
+%{!?with_clang:BuildRequires: gcc-c++ >= 6:4.4}
BuildRequires: glib2-devel >= 1:2.22
BuildRequires: gstreamer-devel >= 1.0
BuildRequires: gstreamer-plugins-base-devel >= 1.0