diff --git a/mono-core.changes b/mono-core.changes
index fdf0718..25ec9bd 100644
--- a/mono-core.changes
+++ b/mono-core.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Jan 17 12:16:41 UTC 2020 - Berthold Gunreben <azouhr@opensuse.org>
+
+- enable btls for s390x
+- remove stale symlinks to prevent from brp-25-symlink errors
+
 -------------------------------------------------------------------
 Tue Dec  3 00:12:48 UTC 2019 - Philipp Seiler <p.seiler@linuxmail.org>
 
diff --git a/mono-core.spec b/mono-core.spec
index a9e8712..2bcbd09 100644
--- a/mono-core.spec
+++ b/mono-core.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package mono-core
 #
-# Copyright (c) 2016 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2020 SUSE LINUX GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -12,10 +12,9 @@
 # license that conforms to the Open Source Definition (Version 1.9)
 # published by the Open Source Initiative.
 
-# Please submit bugfixes or comments via http://bugs.opensuse.org/
+# Please submit bugfixes or comments via https://bugs.opensuse.org/
 #
 
-# norootforbuild
 
 %{!?ext_man: %define ext_man .gz}
 %define llvm no
@@ -26,7 +25,7 @@
 %define boehm yes
 %endif
 
-%ifarch %ix86 x86_64 %{arm} aarch64 ppc64 ppc64le
+%ifarch %ix86 x86_64 %{arm} aarch64 ppc64 ppc64le s390x
 %define btls yes
 %else
 %define btls no
@@ -44,7 +43,7 @@ Name:           mono-core
 Version:        6.4.0
 Release:        0
 Summary:        Cross-platform, Open Source, .NET development framework
-License:        LGPL-2.1 and MIT and MS-PL
+License:        LGPL-2.1-only AND MIT AND MS-PL
 Group:          Development/Languages/Mono
 Url:            http://www.mono-project.com
 Source0:        http://download.mono-project.com/sources/mono/mono-%{version}.%{version_suffix}.tar.xz
@@ -62,23 +61,23 @@ Patch16:        fix-dbg-headers.patch
 Patch20:        xbuild-use-roslyn-vbc.patch
 # PATCH-FIX-OPENSUSE fix 64bit-portability-issue at exceptions-ppc.c:799
 Patch21:        fix-ppc-64bit-portability-issue.patch
-BuildRequires:  cmake
 BuildRequires:  autoconf
 BuildRequires:  automake
 BuildRequires:  bison
 BuildRequires:  ca-certificates
-BuildRequires:  which
+BuildRequires:  cmake
 BuildRequires:  fdupes
 BuildRequires:  gcc-c++
 BuildRequires:  libtool
 BuildRequires:  pkgconfig
+BuildRequires:  python
 BuildRequires:  systemtap-sdt-devel
 BuildRequires:  timezone
+BuildRequires:  which
 BuildRequires:  pkgconfig(libgdiplus)
 BuildRequires:  pkgconfig(x11)
 BuildRequires:  pkgconfig(xinerama)
 BuildRequires:  pkgconfig(zlib)
-BuildRequires:  python
 %ifnarch ia64 %arm s390
 BuildRequires:  pkgconfig(valgrind)
 %endif
@@ -107,52 +106,31 @@ Provides:       mono(I18N) = 2.0.0.0
 Provides:       mono(I18N.West) = 1.0.5000.0
 Provides:       mono(I18N.West) = 2.0.0.0
 Provides:       mono(ICSharpCode.SharpZipLib) = 0.6.0.0
-Provides:       mono(ICSharpCode.SharpZipLib) = 2.6.0.0
 Provides:       mono(ICSharpCode.SharpZipLib) = 0.84.0.0
+Provides:       mono(ICSharpCode.SharpZipLib) = 2.6.0.0
 Provides:       mono(ICSharpCode.SharpZipLib) = 2.84.0.0
 Provides:       mono(Mono.Cairo) = 1.0.5000.0
 Provides:       mono(Mono.Cairo) = 2.0.0.0
 Provides:       mono(Mono.CompilerServices.SymbolWriter) = 1.0.5000.0
 Provides:       mono(Mono.CompilerServices.SymbolWriter) = 2.0.0.0
+Provides:       mono(Mono.Configuration.Crypto) = 4.0.0.0
 Provides:       mono(Mono.Posix) = 1.0.5000.0
 Provides:       mono(Mono.Posix) = 2.0.0.0
 Provides:       mono(Mono.Security) = 1.0.5000.0
 Provides:       mono(Mono.Security) = 2.0.0.0
 Provides:       mono(System) = 1.0.5000.0
 Provides:       mono(System) = 2.0.0.0
+Provides:       mono(System.Collections) = 4.0.0.0
+Provides:       mono(System.Collections.Concurrent) = 4.0.0.0
+Provides:       mono(System.ComponentModel) = 4.0.0.0
+Provides:       mono(System.ComponentModel.Annotations) = 4.0.0.0
+Provides:       mono(System.ComponentModel.EventBasedAsync) = 4.0.0.0
 Provides:       mono(System.Configuration) = 1.0.5000.0
 Provides:       mono(System.Configuration) = 2.0.0.0
-Provides:       mono(System.Security) = 1.0.5000.0
-Provides:       mono(System.Security) = 2.0.0.0
-Provides:       mono(System.Xml) = 1.0.5000.0
-Provides:       mono(System.Xml) = 2.0.0.0
 Provides:       mono(System.Diagnostics.Contracts) = 4.0.0.0
 Provides:       mono(System.Diagnostics.Debug) = 4.0.0.0
 Provides:       mono(System.Diagnostics.Tools) = 4.0.0.0
 Provides:       mono(System.Diagnostics.Tracing) = 4.0.0.0
-Provides:       mono(System.Collections) = 4.0.0.0
-Provides:       mono(System.Collections.Concurrent) = 4.0.0.0
-Provides:       mono(System.Runtime) = 4.0.0.0
-Provides:       mono(System.Runtime.Extensions) = 4.0.0.0
-Provides:       mono(System.Runtime.InteropServices) = 4.0.0.0
-Provides:       mono(System.Runtime.InteropServices.WindowsRuntime) = 4.0.0.0
-Provides:       mono(System.Runtime.Numerics) = 4.0.0.0
-Provides:       mono(System.Runtime.Serialization.Json) = 4.0.0.0
-Provides:       mono(System.Runtime.Serialization.Primitives) = 4.0.0.0
-Provides:       mono(System.Runtime.Serialization.Xml) = 4.0.0.0
-Provides:       mono(System.Reflection) = 4.0.0.0
-Provides:       mono(System.Reflection.Emit) = 4.0.0.0
-Provides:       mono(System.Reflection.Emit.ILGeneration) = 4.0.0.0
-Provides:       mono(System.Reflection.Emit.Lightweight) = 4.0.0.0
-Provides:       mono(System.Reflection.Extensions) = 4.0.0.0
-Provides:       mono(System.Reflection.Primitives) = 4.0.0.0
-Provides:       mono(System.ObjectModel) = 4.0.0.0
-Provides:       mono(System.Xml.ReaderWriter) = 4.0.0.0
-Provides:       mono(System.Xml.XDocument) = 4.0.0.0
-Provides:       mono(System.Xml.XmlSerializer) = 4.0.0.0
-Provides:       mono(System.ComponentModel) = 4.0.0.0
-Provides:       mono(System.ComponentModel.Annotations) = 4.0.0.0
-Provides:       mono(System.ComponentModel.EventBasedAsync) = 4.0.0.0
 Provides:       mono(System.Dynamic.Runtime) = 4.0.0.0
 Provides:       mono(System.Globalization) = 4.0.0.0
 Provides:       mono(System.IO) = 4.0.0.0
@@ -163,7 +141,24 @@ Provides:       mono(System.Linq.Queryable) = 4.0.0.0
 Provides:       mono(System.Net.NetworkInformation) = 4.0.0.0
 Provides:       mono(System.Net.Primitives) = 4.0.0.0
 Provides:       mono(System.Net.Requests) = 4.0.0.0
+Provides:       mono(System.ObjectModel) = 4.0.0.0
+Provides:       mono(System.Reflection) = 4.0.0.0
+Provides:       mono(System.Reflection.Emit) = 4.0.0.0
+Provides:       mono(System.Reflection.Emit.ILGeneration) = 4.0.0.0
+Provides:       mono(System.Reflection.Emit.Lightweight) = 4.0.0.0
+Provides:       mono(System.Reflection.Extensions) = 4.0.0.0
+Provides:       mono(System.Reflection.Primitives) = 4.0.0.0
 Provides:       mono(System.Resources.ResourceManager) = 4.0.0.0
+Provides:       mono(System.Runtime) = 4.0.0.0
+Provides:       mono(System.Runtime.Extensions) = 4.0.0.0
+Provides:       mono(System.Runtime.InteropServices) = 4.0.0.0
+Provides:       mono(System.Runtime.InteropServices.WindowsRuntime) = 4.0.0.0
+Provides:       mono(System.Runtime.Numerics) = 4.0.0.0
+Provides:       mono(System.Runtime.Serialization.Json) = 4.0.0.0
+Provides:       mono(System.Runtime.Serialization.Primitives) = 4.0.0.0
+Provides:       mono(System.Runtime.Serialization.Xml) = 4.0.0.0
+Provides:       mono(System.Security) = 1.0.5000.0
+Provides:       mono(System.Security) = 2.0.0.0
 Provides:       mono(System.Security.Principal) = 4.0.0.0
 Provides:       mono(System.ServiceModel.Http) = 4.0.0.0
 Provides:       mono(System.ServiceModel.Primitives) = 4.0.0.0
@@ -175,10 +170,14 @@ Provides:       mono(System.Threading) = 4.0.0.0
 Provides:       mono(System.Threading.Tasks) = 4.0.0.0
 Provides:       mono(System.Threading.Tasks.Parallel) = 4.0.0.0
 Provides:       mono(System.Threading.Timer) = 4.0.0.0
+Provides:       mono(System.Xml) = 1.0.5000.0
+Provides:       mono(System.Xml) = 2.0.0.0
+Provides:       mono(System.Xml.ReaderWriter) = 4.0.0.0
+Provides:       mono(System.Xml.XDocument) = 4.0.0.0
+Provides:       mono(System.Xml.XmlSerializer) = 4.0.0.0
 Provides:       mono(mscorlib) = 1.0.5000.0
 Provides:       mono(mscorlib) = 2.0.0.0
 Provides:       mono(mscorlib) = 4.0.0.0
-Provides:       mono(Mono.Configuration.Crypto) = 4.0.0.0
 # mono-core provides System.DateTime functions, which rely on timezone information
 Requires:       timezone
 
@@ -346,6 +345,8 @@ rm -v %{buildroot}%{_bindir}/csc
 rm -v %{buildroot}%{_bindir}/csi
 rm -v %{buildroot}%{_bindir}/vbc
 rm -rfv %{msbuild_prefix}
+# also remove stale symlinks to prevent from brp-25-symlink errors:
+rm -v %{buildroot}%{_prefix}/lib/mono/msbuild/Current/bin/Roslyn/*
 %endif
 
 %fdupes %{buildroot}%{_prefix}
@@ -571,7 +572,7 @@ cert-sync /etc/ssl/ca-bundle.pem
 
 %package -n libmono-2_0-1
 Summary:        A Library for embedding Mono in your Application
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Libraries/C and C++
 %if %{sgen}
 Requires:       libmonosgen-2_0-1
@@ -598,7 +599,7 @@ A Library for embedding Mono in your Application.
 
 %package -n libmono-2_0-devel
 Summary:        Development files for libmono
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Languages/Mono
 Requires:       libmono-2_0-1 = %{version}
 %if %{sgen}
@@ -628,7 +629,7 @@ Development files for libmono.
 %if %boehm == yes
 %package -n libmonoboehm-2_0-1
 Summary:        A Library for embedding Mono in your Application (Boehm GC)
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Libraries/C and C++
 
 %description -n libmonoboehm-2_0-1
@@ -651,7 +652,7 @@ Boehm garbage collector.
 
 %package -n libmonoboehm-2_0-devel
 Summary:        Development files for libmonoboehm
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Languages/Mono
 Requires:       libmono-2_0-devel
 Requires:       libmonoboehm-2_0-1 = %{version}
@@ -674,7 +675,7 @@ Development files for libmonoboehm
 %if %sgen == yes
 %package -n libmonosgen-2_0-1
 Summary:        A Library for embedding Mono in your Application (SGen GC)
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Libraries/C and C++
 
 %description -n libmonosgen-2_0-1
@@ -697,7 +698,7 @@ garbage collector.
 
 %package -n libmonosgen-2_0-devel
 Summary:        Development files for libmonosgen
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Languages/Mono
 Requires:       libmono-2_0-devel
 Requires:       libmonosgen-2_0-1 = %{version}
@@ -722,7 +723,7 @@ Development files for libmonosgen.
 %if %llvm == yes
 %package -n libmono-llvm0
 Summary:        Loadable LLVM libary for mono
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Libraries/C and C++
 
 %description -n libmono-llvm0
@@ -745,7 +746,7 @@ Loadable LLVM libary for mono.
 
 %package -n mono-locale-extras
 Summary:        Extra locale information
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Languages/Mono
 Requires:       mono-core = %{version}
 Provides:       mono(I18N.CJK) = 1.0.5000.0
@@ -779,7 +780,7 @@ Extra locale information.
 
 %package -n mono-data
 Summary:        Database connectivity for Mono
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Languages/Mono
 Requires:       mono-core = %{version}
 Provides:       mono-directory = %{version}
@@ -843,7 +844,7 @@ Database connectivity for Mono.
 
 %package -n mono-winforms
 Summary:        Mono's Windows Forms implementation
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Languages/Mono
 Requires:       mono-core = %{version}
 Provides:       mono-window-forms = %{version}
@@ -884,7 +885,7 @@ Mono's Windows Forms implementation.
 
 %package -n ibm-data-db2
 Summary:        Database connectivity for DB2
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Languages/Mono
 Requires:       mono-core = %{version}
 
@@ -904,7 +905,7 @@ Database connectivity for DB2.
 
 %package -n mono-extras
 Summary:        Extra packages
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Languages/Mono
 Requires:       mono-core = %{version}
 Provides:       mono-ms-extras = %{version}
@@ -969,7 +970,7 @@ Extra packages.
 
 %package -n mono-data-sqlite
 Summary:        Database connectivity for Mono
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Languages/Mono
 Requires:       mono-core = %{version}
 Requires:       mono-data = %{version}
@@ -992,7 +993,7 @@ Database connectivity for Mono.
 
 %package -n mono-wcf
 Summary:        Mono implementation of WCF, Windows Communication Foundation
-License:        MIT and MS-PL
+License:        MIT AND MS-PL
 Group:          Development/Languages/Mono
 Requires:       mono-core = %{version}
 
@@ -1038,7 +1039,7 @@ Mono implementation of WCF, Windows Communication Foundation
 
 %package -n mono-winfxcore
 Summary:        Mono implementation of core WinFX APIs
-License:        MIT and MS-PL
+License:        MIT AND MS-PL
 Group:          Development/Languages/Mono
 Requires:       mono-core = %{version}
 
@@ -1060,7 +1061,7 @@ Mono implementation of core WinFX APIs
 
 %package -n mono-web
 Summary:        Mono implementation of ASP
-License:        MIT and MS-PL
+License:        MIT AND MS-PL
 Group:          Development/Languages/Mono
 Requires:       mono-core = %{version}
 Provides:       mono-remoting = %{version}
@@ -1166,7 +1167,7 @@ Mono implementation of ASP.NET, Remoting and Web Services.
 
 %package -n mono-mvc
 Summary:        Mono implementation of ASP
-License:        MIT and MS-PL
+License:        MIT AND MS-PL
 Group:          Development/Languages/Mono
 Requires:       mono-core = %{version}
 
@@ -1197,7 +1198,7 @@ Mono implementation of ASP.NET MVC.
 
 %package -n mono-data-oracle
 Summary:        Database connectivity for Mono
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Languages/Mono
 Requires:       mono-core = %{version}
 Requires:       mono-data = %{version}
@@ -1220,7 +1221,7 @@ Database connectivity for Mono.
 
 %package -n mono-devel
 Summary:        Mono development tools
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Languages/Mono
 Requires:       libgdiplus-devel
 Requires:       mono-core = %{version}
@@ -1241,11 +1242,11 @@ Provides:       mono(PEAPI) = 2.0.0.0
 Provides:       mono(resgen) = 1.0.5000.0
 Provides:       mono(resgen) = 2.0.0.0
 #following 5 lines needed for a temporary build fix. According to https://github.com/mono/mono/commit/1f4133a06f252ec1b78637dd91e49f50836cf570, we shoud fix individual packages that rely on incorrect dependencies
-Provides:       mono(System.ServiceModel) = 3.0.0.0
-Provides:       mono(System.Core) = 3.5.0.0
 Provides:       mono(Mono.Posix) = 2.0.0.0
-Provides:       mono(System.Transactions) = 2.0.0.0
 Provides:       mono(System.Configuration.Install) = 2.0.0.0
+Provides:       mono(System.Core) = 3.5.0.0
+Provides:       mono(System.ServiceModel) = 3.0.0.0
+Provides:       mono(System.Transactions) = 2.0.0.0
 
 %description -n mono-devel
 The Mono Project is an open development initiative that is working to
@@ -1507,7 +1508,7 @@ Microsoft's Reactive Extensions.
 
 %package -n monodoc-core
 Summary:        Monodoc - Documentation tools for C# code
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Tools/Other
 Requires:       mono-core = %{version}
 # Added to uncompress and compare documentation used by build-compare
@@ -1556,7 +1557,7 @@ Monodoc-core contains documentation tools for C#.
 
 %package -n mono-complete
 Summary:        Install everything built from the mono source tree
-License:        LGPL-2.1
+License:        LGPL-2.1-only
 Group:          Development/Languages/Mono
 Requires:       ibm-data-db2 = %{version}
 Requires:       libmono-2_0-1 = %{version}
@@ -1587,8 +1588,8 @@ Requires:       mono-winforms = %{version}
 Requires:       mono-winfxcore = %{version}
 Requires:       monodoc-core = %{version}
 
-Obsoletes:      mono-entityframework < 4.0.0
 Obsoletes:      mono-data-postgresql < 4.0.0
+Obsoletes:      mono-entityframework < 4.0.0
 
 %description -n mono-complete
 The Mono Project is an open development initiative that is working to