diff --git a/libz.spec b/libz.spec
index 394db92..b538602 100644
--- a/libz.spec
+++ b/libz.spec
@@ -1,6 +1,6 @@
 Name:          libz
 Version:       1.2.11
-Release:       3mamba
+Release:       4mamba
 Summary:       The zlib compression and decompression library
 Group:         System/Libraries
 Vendor:        openmamba
@@ -41,50 +41,28 @@ The zlib library is used by many different system programs.
 
 This package contains static libraries and header files needed for development.
 
-%package -n libminizip
+%package -n libminizip1
 Summary:       Minizip manipulates files from a .zip archive
 Group:         System/Libraries
 Provides:      minizip
 Obsoletes:     minizip
 
-%description -n libminizip
+%description -n libminizip1
 Minizip manipulates files from a .zip archive.
 
-%package -n libminizip-devel
+%package -n libminizip1-devel
 Summary:       Static libraries and headers for libminizip
 Group:         Development/Libraries
-Requires:      libminizip = %{?epoch:%epoch:}%{version}-%{release}
+Requires:      libminizip1 = %{?epoch:%epoch:}%{version}-%{release}
 Provides:      minizip-devel
 Obsoletes:     minizip-devel
 
-%description -n libminizip-devel
+%description -n libminizip1-devel
 Minizip manipulates files from a .zip archive.
 
 This package contains static libraries and header files needed for development.
 
-%ifarch x86_64_disabled
-%package -n lib32-libz
-Summary:       The zlib compression and decompression library (32 bit)
-Group:         System/Libraries
-
-%description -n lib32-libz
-The zlib compression library provides in-memory compression and decompression functions, including integrity checks of the uncompressed data.
-This version of the library supports only one compression method (deflation), but other algorithms may be added later, which will have the same stream interface.
-The zlib library is used by many different system programs.
-
-%package -n lib32-libz-devel
-Summary:       32bit static libraries and headers for %{name}
-Group:         Development/Libraries
-Requires:      lib32-%{name} = %{?epoch:%epoch:}%{version}-%{release}
-Requires:      %{name}-devel = %{?epoch:%epoch:}%{version}-%{release}
-
-%description -n lib32-libz-devel
-The zlib compression library provides in-memory compression and decompression functions, including integrity checks of the uncompressed data.
-This version of the library supports only one compression method (deflation), but other algorithms may be added later, which will have the same stream interface.
-The zlib library is used by many different system programs.
-
-This package contains static libraries and header files need for development.
-%endif
+%debug_package
 
 %prep
 %setup -q -n zlib-%{version}
@@ -92,11 +70,6 @@ This package contains static libraries and header files need for development.
 #%patch1 -p1 -b .atools
 #%patch2 -p1 -b .g
 
-#mkdir contrib/minizip/m4
-#cp test/minigzip.c contrib/minizip
-#iconv -f windows-1252 -t utf-8 <ChangeLog >ChangeLog.tmp
-#mv ChangeLog.tmp ChangeLog
-
 %build
 CC=%{_target_platform}-gcc \
 CFLAGS="%{optflags}" \
@@ -127,32 +100,17 @@ cd ../..
 
 cd contrib/minizip
 %makeinstall
-#install -D -m0755 minizip %{buildroot}%{_bindir}/minizip
-#install -D -m0755 miniunz %{buildroot}%{_bindir}/miniunz
-#install -d -m0755 %{buildroot}%{_includedir}/minizip
-#cp *.h %{buildroot}%{_includedir}/minizip/
 cd ../..
 
-#%ifarch x86_64_disabled
-#make clean
-#CC=%{_target_platform}-gcc \
-#CFLAGS="%{optflags} -m32" \
-#CXXLAGS="%{optflags} -m32" \
-#./configure --prefix=%{_prefix} --libdir=%{_prefix}/lib
-#%make
-#make install-libs DESTDIR=%{buildroot}
-#
-#install -d %{buildroot}/lib
-#mv %{buildroot}%{_prefix}/lib/libz.so.* %{buildroot}/lib
-#ln -sf ../../lib/libz.so.%{version} %{buildroot}%{_prefix}/lib/libz.so
-#%endif
-
 %clean
 [ "%{buildroot}" != / ] && rm -rf %{buildroot}
 
 %post -p /sbin/ldconfig
 %postun -p /sbin/ldconfig
 
+%post -n libminizip1 -p /sbin/ldconfig
+%postun -n libminizip1 -p /sbin/ldconfig
+
 %files
 %defattr(-,root,root)
 %{_libdir}/libz.so.*
@@ -166,14 +124,11 @@ cd ../..
 %{_mandir}/man3/zlib.*
 %doc ChangeLog FAQ README
 
-%files -n libminizip
+%files -n libminizip1
 %defattr(-,root,root)
 %{_libdir}/libminizip.so.*
 
-#%{_bindir}/minizip
-#%{_bindir}/miniunz
-
-%files -n libminizip-devel
+%files -n libminizip1-devel
 %defattr(-,root,root)
 %dir %{_includedir}/minizip
 %{_includedir}/minizip/*.h
@@ -182,19 +137,10 @@ cd ../..
 %{_libdir}/pkgconfig/minizip.pc
 %doc contrib/minizip/MiniZip64_info.txt contrib/minizip/MiniZip64_Changes.txt
 
-#%ifarch x86_64_disabled
-#%files -n lib32-libz
-#%defattr(-,root,root)
-#/lib/libz.so.*
-#
-#%files -n lib32-libz-devel
-#%defattr(-,root,root)
-#%{_prefix}/lib/libz.a
-#%{_prefix}/lib/libz.so
-#%{_prefix}/lib/pkgconfig/zlib.pc
-#%endif
-
 %changelog
+* Tue Sep 29 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 1.2.11-4mamba
+- rebuilt with libminizip as libminizip1 legacy package; added debug package
+
 * Thu Jan 16 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 1.2.11-3mamba
 - x86_64: obsolete lib32-libz