diff --git a/libogg.spec b/libogg.spec
index 9954e4f..c93b0d5 100644
--- a/libogg.spec
+++ b/libogg.spec
@@ -1,11 +1,11 @@
 Name:          libogg
 Version:       1.3.5
-Release:       1mamba
+Release:       2mamba
 Summary:       A library for encoding or decoding a single physical bitstream
 Group:         System/Libraries
 Vendor:        openmamba
 Distribution:  openmamba
-Packager:      Aleph0 <aleph0@openmamba.org>
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           https://xiph.org/vorbis/
 Source:        http://downloads.xiph.org/releases/ogg/libogg-%{version}.tar.gz
 License:       BSD
@@ -25,48 +25,50 @@ Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 %description devel
 The libogg package contains the ogg file structure.
 This is useful for creating (encoding) or playing (decoding).
+This package contains static libraries and header files needed for development.
 
-This package contains static libraries and header files need for development.
+%debug_package
 
 %prep
 %setup -q
 
 %build
-%configure
+%cmake -d build
+
 %make
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-rm -fr pckdocs
-%makeoldinstall \
-   docdir=%{_builddir}/%{name}-%{version}/pckdocs
-
-rm -f %{buildroot}%{_libdir}/*.a
+%makeinstall -C build
 
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 
-%post   -p /sbin/ldconfig
+%post -p /sbin/ldconfig
 %postun -p /sbin/ldconfig
 
 %files
 %defattr(-,root,root)
 %{_libdir}/libogg.so.*
-%doc AUTHORS CHANGES COPYING
+%doc AUTHORS COPYING
 
 %files devel
 %defattr(-,root,root)
-%{_datadir}/aclocal/ogg.m4
 %dir %{_includedir}/ogg
 %{_includedir}/ogg/config_types.h
 %{_includedir}/ogg/ogg.h
 %{_includedir}/ogg/os_types.h
-%{_libdir}/libogg.la
 %{_libdir}/libogg.so
 %{_libdir}/pkgconfig/ogg.pc
-%doc pckdocs/*
+%dir %{_libdir}/cmake/Ogg
+%{_libdir}/cmake/Ogg/Ogg*.cmake
+%dir %{_docdir}/libogg
+%{_docdir}/libogg/*
 
 %changelog
+* Tue May 09 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 1.3.5-2mamba
+- rebuilt with cmake
+
 * Fri Jun 04 2021 Automatic Build System <autodist@mambasoft.it> 1.3.5-1mamba
 - automatic version update by autodist