Make sure to add <tt>python</tt> to the build requirements:
BuildRequires: python
%prep
%setup -q
./configure # Unpack scons-mini
CXXFLAGS="%{optflags}" \
./scons configure \
%if %{_lib} == lib64
libsuffix=64 \
%endif
prefix="%{_prefix}"
%build ./scons
%install
%{__rm} -rf "%{buildroot}"
DESTDIR="%{buildroot}" ./scons install