BuildRequires: autoconf >= 2.59
BuildRequires: automake
%{?with_cairo:BuildRequires: cairo-devel >= 1.6}
-BuildRequires: gettext-tools
+BuildRequires: gettext-tools >= 0.18.1
BuildRequires: glib2-devel >= 1:2.32
%{?with_gtk:BuildRequires: gtk+2-devel >= 2:2.24}
BuildRequires: libguess-devel >= 1.2
-# -std=gnu++11
+# -std=gnu++11 is minimum, -std=gnu++17 preferred
BuildRequires: libstdc++-devel >= 6:4.7
%{?with_gtk:BuildRequires: pango-devel >= 1:1.20}
BuildRequires: pkgconfig