diff --git a/gconfmm-2.28.3-no-extern-c-glib-includes.patch b/gconfmm-2.28.3-no-extern-c-glib-includes.patch
new file mode 100644
index 0000000..b05face
--- /dev/null
+++ b/gconfmm-2.28.3-no-extern-c-glib-includes.patch
@@ -0,0 +1,44 @@
+diff -Naur gconfmm-2.28.3-original/gconf/gconfmm/callback.h gconfmm-2.28.3/gconf/gconfmm/callback.h
+--- gconfmm-2.28.3-original/gconf/gconfmm/callback.h	2011-10-18 11:33:49.000000000 -0400
++++ gconfmm-2.28.3/gconf/gconfmm/callback.h	2021-02-13 09:21:06.167235506 -0500
+@@ -22,10 +22,7 @@
+ #ifndef GCONFMM_CALLBACK_H
+ #define GCONFMM_CALLBACK_H
+ 
+-extern "C"
+-{
+ #include <gconf/gconf-client.h>
+-}
+ 
+ #include <glibmm/object.h>
+ #include <gconfmm/entry.h>
+diff -Naur gconfmm-2.28.3-original/gconf/gconfmm/schema.h gconfmm-2.28.3/gconf/gconfmm/schema.h
+--- gconfmm-2.28.3-original/gconf/gconfmm/schema.h	2011-10-21 04:51:27.000000000 -0400
++++ gconfmm-2.28.3/gconf/gconfmm/schema.h	2021-02-13 09:21:24.616354041 -0500
+@@ -31,10 +31,8 @@
+ #include <gconfmm/value.h>
+ 
+ 
+-extern "C" {
+-    // TODO: do not include this.
++// TODO: do not include this.
+ #include <gconf/gconf-schema.h>
+-}
+ 
+ namespace Gnome
+ {
+diff -Naur gconfmm-2.28.3-original/gconf/src/schema.hg gconfmm-2.28.3/gconf/src/schema.hg
+--- gconfmm-2.28.3-original/gconf/src/schema.hg	2011-10-18 11:33:49.000000000 -0400
++++ gconfmm-2.28.3/gconf/src/schema.hg	2021-02-13 09:21:58.002568546 -0500
+@@ -24,10 +24,8 @@
+ 
+ _DEFS(gconfmm,gconf)
+ 
+-extern "C" {
+-    // TODO: do not include this.
++// TODO: do not include this.
+ #include <gconf/gconf-schema.h>
+-}
+ 
+ namespace Gnome
+ {
diff --git a/gconfmm.spec b/gconfmm.spec
index 56fb1a4..11981c9 100644
--- a/gconfmm.spec
+++ b/gconfmm.spec
@@ -2,28 +2,31 @@
 
 Name:          gconfmm
 Version:       2.28.3
-Release:       1mamba
+Release:       2mamba
 Summary:       C++ interface for the GConf package
 Group:         System/Libraries
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://www.gnome.org
+URL:           https://www.gnome.org/
 Source:        ftp://ftp.acc.umu.se/pub/GNOME/sources/gconfmm/%{majversion}/gconfmm-%{version}.tar.bz2
+Patch0:        gconfmm-2.28.3-no-extern-c-glib-includes.patch
 License:       GPL
-BuildRequires: pkgconfig >= 0.15.0
-BuildRequires: libgtkmm-devel >= 2.4.8
 ## AUTOBUILDREQ-BEGIN
-BuildRequires: GConf-devel
 BuildRequires: glibc-devel
+BuildRequires: libGConf-devel
+BuildRequires: libORBit2-devel
+BuildRequires: libdbus-devel
+BuildRequires: libdbus-glib-devel
 BuildRequires: libgcc
 BuildRequires: libglib-devel
-BuildRequires: libglibmm-devel
+BuildRequires: libglibmm24-devel
 BuildRequires: libsigc++2-devel
 BuildRequires: libstdc++6-devel
-BuildRequires: ORBit2-devel
+BuildRequires: libsystemd-devel
 ## AUTOBUILDREQ-END
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
+BuildRequires: pkgconfig >= 0.15.0
+BuildRequires: libgtkmm-devel >= 2.4.8
 
 %description
 C++ interface for the GConf package.
@@ -35,13 +38,17 @@ Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 
 %description devel
 C++ interface for the GConf package.
+This package contains static libraries and header files needed for development.
 
-This package contains static libraries and header files need for development.
+%debug_package
 
 %prep
 %setup -q
+%patch0 -p1
+sed -i "s,| arm-\*  |,| aarch64-\* | arm-\*  |," build/config.sub
 
 %build
+CXXFLAGS+=' -std=c++11'
 %configure \
    --libexecdir=%{_prefix}/sbin \
    --sysconfdir=%{_sysconfdir}/gnome \
@@ -76,6 +83,9 @@ This package contains static libraries and header files need for development.
 %{_libdir}/pkgconfig/*
 
 %changelog
+* Mon Nov 22 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 2.28.3-2mamba
+- rebuilt with debug package
+
 * Wed Oct 26 2011 Automatic Build System <autodist@mambasoft.it> 2.28.3-1mamba
 - automatic version update by autodist