--- /dev/null
+#
+# Conditional build:
+%bcond_without tests # build with tests
+#
+Summary: Khronos reference front-end for GLSL and ESSL
+Name: glslang
+Version: 3.0
+Release: 0.1
+License: BSD-like
+Group: Applications/Graphics
+Source0: https://github.com/KhronosGroup/glslang/archive/%{version}/%{name}-%{version}.tar.gz
+# Source0-md5: f8c8cf31836790f6c1571694f78ec6db
+URL: https://github.com/KhronosGroup/glslang
+BuildRequires: cmake
+BuildRequires: llvm-devel
+BuildRoot: %{tmpdir}/%{name}-%{version}-root-%(id -u -n)
+
+%description
+An OpenGL and OpenGL ES shader front end and validator.
+
+%package devel
+Summary: Khronos reference front-end library for GLSL and ESSL
+Summary(pl.UTF-8): Pliki nagłówkowe biblioteki %{name}
+Group: Development/Libraries
+
+%description devel
+A front-end library for programmatic parsing of GLSL/ESSL into an AST.
+
+%prep
+%setup -q
+
+%build
+install -d build
+cd build
+%cmake \
+ ../
+%{__make}
+%{__make} install
+
+%if %{with tests}
+install/bin/glslangValidator -i ../Test/sample.vert ../Test/sample.frag
+%endif
+
+%install
+rm -rf $RPM_BUILD_ROOT
+
+install -d $RPM_BUILD_ROOT{%{_bindir},%{_libdir},%{_includedir}}
+
+cd build
+cp -p install/bin/* $RPM_BUILD_ROOT%{_bindir}
+cp -p install/lib/* $RPM_BUILD_ROOT%{_libdir}
+cd ..
+
+install -d $RPM_BUILD_ROOT%{_includedir}/%{name}/{SPIRV,glslang/{Include,MachineIndependent/preprocessor,OSDependent/Linux,Public}}
+cp -p SPIRV/{*.h,*.hpp} $RPM_BUILD_ROOT%{_includedir}/%{name}/SPIRV
+cp -p glslang/Include/*.h $RPM_BUILD_ROOT%{_includedir}/%{name}/glslang/Include
+cp -p glslang/MachineIndependent/*.h $RPM_BUILD_ROOT%{_includedir}/%{name}/glslang/MachineIndependent
+cp -p glslang/MachineIndependent/preprocessor/*.h $RPM_BUILD_ROOT%{_includedir}/%{name}/glslang/MachineIndependent/preprocessor
+cp -p glslang/OSDependent/Linux/*.h $RPM_BUILD_ROOT%{_includedir}/%{name}/glslang/OSDependent/Linux
+cp -p glslang/Public/*.h $RPM_BUILD_ROOT%{_includedir}/%{name}/glslang/Public
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+%files
+%defattr(644,root,root,755)
+%doc README-spirv-remap.txt
+%attr(755,root,root) %{_bindir}/*
+
+%files devel
+%defattr(644,root,root,755)
+%doc README.md Todo.txt
+%{_libdir}/*.a
+%{_includedir}/%{name}