diff --git a/unrar.spec b/unrar.spec
index 51ec43b..1d0b2ce 100644
--- a/unrar.spec
+++ b/unrar.spec
@@ -1,6 +1,6 @@
 Name:          unrar
 Version:       6.0.3
-Release:       1mamba
+Release:       2mamba
 Summary:       Unrar can extract files from .rar archives
 Group:         System/Tools
 Vendor:        openmamba
@@ -10,25 +10,50 @@ URL:           http://www.rarlab.com
 Source:        http://www.rarlab.com/rar/unrarsrc-%{version}.tar.gz
 Patch:         %{name}-5.0.14-man.patch
 License:       no OSI Approved
+## AUTOBUILDREQ-BEGIN
+BuildRequires: glibc-devel
+BuildRequires: ldconfig
+BuildRequires: libgcc
+BuildRequires: libstdc++6-devel
+## AUTOBUILDREQ-END
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 Unrar can extract files from .rar archives.
 If you want to create .rar archives, install package rar.
 
+%package -n libunrar
+Group:         System/Libraries
+Summary:       Unrar shared library
+
+%description -n libunrar
+This package contains the shared library prived with unrar.
+
+%package -n libunrar-devel
+Group:         Development/Libraries
+Summary:       Static libraries and headers for libunrar
+Requires:      libunrar = %{version}-%{release}
+
+%description -n libunrar-devel
+This package contains static libraries and header files needed for development.
+
+%debug_package
+
 %prep
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 
-%setup -q -n unrar
-#%patch0 -p1
+%setup -q -c -a0
+cp -a unrar libunrar
 
 %build
-%make CXX=%{_host}-g++
+make -C libunrar STRIP=/bin/true lib
+make -C unrar STRIP=/bin/true -j1
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-install -d %{buildroot}{%{_bindir},%{_mandir}/man1}
-install -m 0755 unrar %{buildroot}%{_bindir}
+install -D -m0755 unrar/unrar %{buildroot}%{_bindir}/unrar
+install -D -m0755 libunrar/libunrar.so %{buildroot}%{_libdir}/libunrar.so
+install -D -m644 libunrar/dll.hpp %{buildroot}%{_includedir}/unrar/dll.hpp
 #install -m 0644 unrar.1 %{buildroot}%{_mandir}/man1
 
 %clean
@@ -38,8 +63,21 @@ install -m 0755 unrar %{buildroot}%{_bindir}
 %defattr(-,root,root)
 %{_bindir}/unrar
 #%{_mandir}/man1/*
+%doc unrar/license.txt
+
+%files -n libunrar
+%defattr(-,root,root)
+%{_libdir}/libunrar.so
+%doc unrar/license.txt
+
+%files -n libunrar-devel
+%defattr(-,root,root)
+%{_includedir}/unrar/dll.hpp
 
 %changelog
+* Thu Dec 31 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 6.0.3-2mamba
+- rebuilt with libunrar, debug package and build requirements
+
 * Mon Dec 07 2020 Automatic Build System <autodist@mambasoft.it> 6.0.3-1mamba
 - automatic version update by autodist