+%bcond_without tests
+Summary: Engine for processing 3D models into G-code instructions for 3D printers
+Name: CuraEngine
+Version: 15.04
+Release: 1
+License: AGPLv3
+Group: Applications/Engineering
+URL: https://github.com/Ultimaker/CuraEngine
+Source0: https://github.com/Ultimaker/CuraEngine/archive/%{version}.tar.gz
+# Source0-md5: 75d34492ca18358aa554a56afb2de440
+BuildRequires: polyclipping-devel >= 6.1.2
+%{?with_tests:BuildRequires: python}
+
+%description
+%{name} is a C++ console application for 3D printing G-code
+generation. It has been made as a better and faster alternative to the
+old Skeinforge engine.
+
+This is just a console application for G-code generation. For a full
+graphical application look at cura with is the graphical frontend for
+%{name}.
+
+%prep
+%setup -q
+
+# bundled clipper
+rm -rf clipper
+sed -i 's|#include <clipper/clipper.hpp>|#include <polyclipping/clipper.hpp>|' src/utils/*.h
+sed -i 's|-lclipper|-lpolyclipping|g' Makefile
+sed -i 's| $(BUILD_DIR)/libclipper.a||g' Makefile
+
+# allow redefinition of CFLAGS and do not build it static
+sed -i 's|CFLAGS +=|CFLAGS?=|' Makefile
+sed -i 's|--static||g' Makefile
+
+%build
+CXX="%{__cxx}" \
+CFLAGS="-I. -Ilibs -c %{rpmcflags} %{rpmcppflags} -std=c++11 -fomit-frame-pointer" \
+ %{__make}
+
+%{?with_tests:%{__make} test}
+
+%install
+rm -rf $RPM_BUILD_ROOT
+
+install -Dpm 0755 build/%{name} $RPM_BUILD_ROOT/%{_bindir}/%{name}
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+%files
+%defattr(644,root,root,755)
+%doc LICENSE README.md
+%attr(755,root,root) %{_bindir}/%{name}