-BuildRequires: libjpeg-devel
-BuildRequires: libpng >= 1.0.8
-BuildRequires: libtiff-devel
-BuildRequires: libtool
-BuildRequires: zlib-devel
-BuildRoot: %{tmpdir}/%{name}-%{version}-root-%(id -u -n)
+BuildRequires: libjpeg-devel >= 8
+BuildRequires: libpng-devel >= 2:1.5.0
+BuildRequires: libtiff-devel >= 4
+BuildRequires: libtool >= 2:2.0
+BuildRequires: libwebp-devel >= 0.1.3
+BuildRequires: pkgconfig >= 1:0.9.0
+Requires: SDL >= 1.2.10
+Suggests: libjpeg >= 8
+%if "%(pkg-config --exists libpng16 2>/dev/null ; echo $?)" == "0"
+Suggests: libpng >= 2:1.6.0
+%else
+Suggests: libpng >= 2:1.5.0
+%endif
+Suggests: libtiff >= 4
+Suggests: libwebp >= 0.1.3