diff --git a/belle-sip.spec b/belle-sip.spec
index a679786..09fab3f 100644
--- a/belle-sip.spec
+++ b/belle-sip.spec
@@ -1,28 +1,23 @@
 Name:          belle-sip
-Version:       1.6.3
+Version:       4.5.22
 Release:       1mamba
 Summary:       A SIP (RFC3261) implementation written in C, with an object oriented API.
 Group:         System/Libraries
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://www.linphone.org
-#Source:        http://download.savannah.gnu.org/releases/linphone/belle-sip/%{name}-%{version}.tar.gz
+URL:           https://www.linphone.org
 Source:        https://github.com/BelledonneCommunications/belle-sip.git/%{version}/%{name}-%{version}.tar.bz2
 Patch0:        belle-sip-1.5.0-fix-internal-includes.patch
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: libantlr3c-devel
 BuildRequires: libbctoolbox-devel
 BuildRequires: libgcc
-BuildRequires: libpolarssl-devel
 BuildRequires: libstdc++6-devel
 BuildRequires: libz-devel
 ## AUTOBUILDREQ-END
-BuildRequires: antlr3
 Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 Belle-sip is a SIP (RFC3261) implementation written in C, with an object oriented API.
@@ -47,21 +42,18 @@ This package contains libraries and header files for developing applications tha
 
 %prep
 %setup -q
-#%patch0 -p1
-sed -i \
-  -e "s#antlr_java_prefixes=.*#antlr_java_prefixes="$srcdir"#" \
-  configure.ac
 
 %build
-./autogen.sh
-%configure \
-   CFLAGS="-Wno-error"
+export CC=/usr/bin/clang
+export CXX=/usr/bin/clang++
+
+%cmake -d build
 
 %make
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-%makeinstall
+%makeinstall -C build
 
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
@@ -72,19 +64,38 @@ sed -i \
 %files -n lib%{name}
 %defattr(-,root,root)
 %{_libdir}/libbellesip.so.*
-%doc AUTHORS COPYING
+%doc LICENSE.txt
 
 %files -n lib%{name}-devel
 %defattr(-,root,root)
+%{_bindir}/belle_sip_tester
 %dir %{_includedir}/belle-sip
 %{_includedir}/belle-sip/*.h
+%{_includedir}/belle-sip/*.hh
 %{_libdir}/libbellesip.so
 %{_libdir}/libbellesip.a
-%{_libdir}/libbellesip.la
+%dir %{_libdir}/cmake/BelleSIP
+%{_libdir}/cmake/BelleSIP/BelleSIP*.cmake
+%{_datadir}/belle_sip_tester/tester_hosts
+
 %{_libdir}/pkgconfig/belle-sip.pc
-%doc NEWS
 
 %changelog
+* Mon Jun 28 2021 Automatic Build System <autodist@mambasoft.it> 4.5.22-1mamba
+- automatic version update by autodist
+
+* Thu Jun 17 2021 Automatic Build System <autodist@mambasoft.it> 4.5.20-1mamba
+- automatic version update by autodist
+
+* Sat May 15 2021 Automatic Build System <autodist@mambasoft.it> 4.5.15-1mamba
+- automatic version update by autodist
+
+* Tue May 11 2021 Automatic Build System <autodist@mambasoft.it> 4.5.14-1mamba
+- automatic version update by autodist
+
+* Fri May 07 2021 Automatic Build System <autodist@mambasoft.it> 4.5.10-1mamba
+- automatic version update by autodist
+
 * Tue Sep 05 2017 Silvan Calarco <silvan.calarco@mambasoft.it> 1.6.3-1mamba
 - update to 1.6.3