diff --git a/glslang.spec b/glslang.spec
index 8b62c10..bec70fc 100644
--- a/glslang.spec
+++ b/glslang.spec
@@ -1,6 +1,6 @@
 Name:          glslang
 Version:       12.3.1
-Release:       1mamba
+Release:       2mamba
 Summary:       Khronos-reference front end for GLSL/ESSL, partial front end for HLSL, and a SPIR-V generator
 Group:         Development/Tools
 Vendor:        openmamba
@@ -15,6 +15,8 @@ BuildRequires: libgcc
 BuildRequires: libstdc++6-devel
 ## AUTOBUILDREQ-END
 BuildRequires: cmake
+BuildRequires: spirv-headers
+BuildRequires: libspirv-tools-devel
 Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
 
 %description
@@ -40,14 +42,26 @@ This package contains libraries and header files for developing applications tha
 
 %prep
 %setup -q
+#-D -T
 
 %build
-%cmake -d build
+#:<< _EOF
+# Static libraries are required by e.g. shaderc
+%cmake -d build \
+   -DBUILD_SHARED_LIBS=OFF
+
 %make
 
+cd ..
+%cmake -d build-shared
+
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 %makeinstall -C build
+%makeinstall -C build-shared
+
+# Manual fix for link not created during install
+ln -s glslang %{buildroot}%{_bindir}/glslangValidator
 
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
@@ -58,6 +72,7 @@ This package contains libraries and header files for developing applications tha
 %files
 %defattr(-,root,root)
 %{_bindir}/glslang
+%{_bindir}/glslangValidator
 %{_bindir}/spirv-remap
 
 %files -n lib%{name}
@@ -91,12 +106,23 @@ This package contains libraries and header files for developing applications tha
 #%{_libdir}/libglslang-default-resource-limits.so
 %{_libdir}/libglslang.so
 %{_libdir}/libHLSL.so
+%{_libdir}/libGenericCodeGen.a
+%{_libdir}/libHLSL.a
+%{_libdir}/libMachineIndependent.a
+%{_libdir}/libOGLCompiler.a
+%{_libdir}/libOSDependent.a
+%{_libdir}/libSPIRV.a
+%{_libdir}/libSPVRemapper.a
+%{_libdir}/libglslang.a
 %{_libdir}/cmake/*.cmake
 %dir %{_libdir}/cmake/glslang
 %{_libdir}/cmake/glslang/glslang*.cmake
 %doc README-spirv-remap.txt README.md
 
 %changelog
+* Sun Aug 20 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 12.3.1-2mamba
+- rebuild with OS dependent libraries
+
 * Sat Jul 22 2023 Automatic Build System <autodist@mambasoft.it> 12.3.1-1mamba
 - automatic version update by autodist