https://fedoraproject.org/wiki/Changes/Remove_make_from_BuildRoot
@ -10,6 +10,7 @@ Source0: https://rubygems.org/gems/%{gem_name}-%{version}.gem
# git clone https://github.com/ffi/ffi.git --no-checkout
# cd ffi && git archive -v -o ffi-1.13.1-spec.txz 1.13.1 spec/
Source1: %{gem_name}-%{version}-spec.txz
BuildRequires: make
BuildRequires: ruby(release)
BuildRequires: rubygems-devel
BuildRequires: ruby-devel