%global lua_minver 5.1
%{!?lua_version: %global lua_version %([[ -x /usr/bin/lua ]] && lua -e "print(string.sub(_VERSION, 5))" || echo %{lua_minver})}
%global lua_libdir %{_libdir}/lua/%{lua_version}

BuildRequires:  libtool
BuildRequires:  lua >= 5.1
BuildRequires:  lua-devel >= 5.1

Name:           lua-bit32
Version:        5.3.0
Release:        2%{?dist}

License:        MIT
Summary:        Backport of Lua bit manipulation library introduced in 5.2
Url:            https://luarocks.org/modules/siffiejoe/bit32

Requires:       lua(abi) = %{lua_version}

Source0:        https://github.com/keplerproject/lua-compat-5.2/archive/bitlib-%{version}.tar.gz

%description
bit32 is the native Lua 5.2 bit manipulation library, in the version
from Lua 5.3; it is compatible with Lua 5.1, 5.2 and 5.3.

%prep
%autosetup -n lua-compat-5.2-bitlib-%{version}

%build
gcc %{optflags} -I/usr/include -I./c-api $(pkg-config --libs lua) lbitlib.c -shared -fPIC -o bit32.so

%install
install -d %{buildroot}%{lua_libdir}
install -p bit32.so %{buildroot}%{lua_libdir}/

%files
%license LICENSE
%doc README.md
%{lua_libdir}/bit32.so

%changelog
* Wed May 10 2017 Michel Alexandre Salim <salimma@fedoraproject.org> - 5.3.0-2
- Remove defattr

* Mon May 08 2017 Michel Alexandre Salim <salimma@fedoraproject.org> - 5.3.0-1
- Initial package