diff --git a/libcxx.spec b/libcxx.spec
index 6480eb1..c87f72e 100644
--- a/libcxx.spec
+++ b/libcxx.spec
@@ -1,5 +1,5 @@
 Name:          libcxx
-Version:       10.0.1
+Version:       11.0.0
 Release:       1mamba
 Summary:       An implementation of the C++ standard library, targeting C++11, C++14 and above
 Group:         System/Libraries
@@ -8,15 +8,18 @@ Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           https://libcxx.llvm.org/
 Source:        https://github.com/llvm/llvm-project/releases/download/llvmorg-%{version}/libcxx-%{version}.src.tar.xz
+Source1:       https://github.com/llvm/llvm-project/releases/download/llvmorg-%{version}/libcxxabi-%{version}.src.tar.xz
+Source2:       https://github.com/llvm/llvm-project/releases/download/llvmorg-%{version}/llvm-%{version}.src.tar.xz
 License:       MIT, BSD
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: ldconfig
+BuildRequires: libatomic-devel
 BuildRequires: libgcc
 ## AUTOBUILDREQ-END
 BuildRequires: cmake
 Provides:      libc++
 Obsoletes:     libc++
+Requires:      libcxxabi = %{?epoch:%epoch:}%{version}-%{release}
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
@@ -26,24 +29,47 @@ libc++ is an implementation of the C++ standard library, targeting C++11, C++14
 Group:         Development/Libraries
 Summary:       Development files for %{name}
 Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
+Requires:      libcxxabi = %{?epoch:%epoch:}%{version}-%{release}
 Provides:      libc++-devel
 Obsoletes:     libc++-devel
 
 %description devel
 This package contains libraries and header files for developing applications that use %{name}.
 
+%package -n libcxxabi
+Group:         System/Libraries
+Summary:       Low level support for the LLVM C++ standard library
+
+%description -n libcxxabi
+Low level support for the LLVM C++ standard library.
+
 %debug_package
 
 %prep
-%setup -q -n %{name}-%{version}.src
+%setup -q -c -a0 -a1 -a2
+#% setup -q -c -D -T
+#:<< _EOF
+mv llvm-%{version}.src llvm
+mv libcxx-%{version}.src llvm/projects/libcxx
+mv libcxxabi-%{version}.src llvm/projects/libcxxabi
 
 %build
-%cmake -d build
-%make
+%cmake -d build \
+  -G Ninja \
+  -DCMAKE_C_COMPILER=clang \
+  -DCMAKE_CXX_COMPILER=clang++ \
+  -DLIBCXX_INSTALL_EXPERIMENTAL_LIBRARY=NO \
+%ifarch x86_64 aarch64
+  -DLLVM_LIBDIR_SUFFIX="64" \
+%endif
+  ../llvm
+
+ninja cxx cxx_experimental
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-%makeinstall -C build
+cd build
+DESTDIR=%{buildroot} ninja install-cxx install-cxxabi
 
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
@@ -51,10 +77,13 @@ This package contains libraries and header files for developing applications tha
 %post -p /sbin/ldconfig
 %postun -p /sbin/ldconfig
 
+%post -n libcxxabi -p /sbin/ldconfig
+%postun -n libcxxabi -p /sbin/ldconfig
+
 %files
 %defattr(-,root,root)
 %{_libdir}/libc++.so.*
-%doc LICENSE.TXT
+%doc llvm/projects/libcxx/LICENSE.TXT llvm/projects/libcxx/CREDITS.TXT
 
 %files devel
 %defattr(-,root,root)
@@ -63,8 +92,18 @@ This package contains libraries and header files for developing applications tha
 %{_includedir}/c++/v1/*
 %{_libdir}/libc++.a
 %{_libdir}/libc++.so
+%{_libdir}/libc++abi.a
+%{_libdir}/libc++abi.so
+
+%files -n libcxxabi
+%defattr(-,root,root)
+%{_libdir}/libc++abi.so.*
+%doc llvm/projects/libcxxabi/LICENSE.TXT llvm/projects/libcxxabi/CREDITS.TXT
 
 %changelog
+* Tue Oct 13 2020 Automatic Build System <autodist@mambasoft.it> 11.0.0-1mamba
+- automatic version update by autodist
+
 * Sat Jul 25 2020 Automatic Build System <autodist@mambasoft.it> 10.0.1-1mamba
 - automatic version update by autodist