diff --git a/libqt4-4.8.7-gcc-6.1.0.patch b/libqt4-4.8.7-gcc-6.1.0.patch
new file mode 100644
index 0000000..aaf1c49
--- /dev/null
+++ b/libqt4-4.8.7-gcc-6.1.0.patch
@@ -0,0 +1,35 @@
+diff -up qt-everywhere-opensource-src-4.8.7/configure.gcc6 qt-everywhere-opensource-src-4.8.7/configure
+--- qt-everywhere-opensource-src-4.8.7/configure.gcc6	2016-04-15 07:04:19.430268222 -0500
++++ qt-everywhere-opensource-src-4.8.7/configure	2016-04-15 07:05:22.157568689 -0500
+@@ -7744,7 +7744,7 @@ case "$XPLATFORM" in
+     *-g++*)
+ 	# Check gcc's version
+ 	case "$(${QMAKE_CONF_COMPILER} -dumpversion)" in
+-	    5*|4*|3.4*)
++	    8*|7*|6*|5*|4*|3.4*)
+ 		;;
+             3.3*)
+                 canBuildWebKit="no"
+@@ -8060,7 +8060,7 @@ g++*)
+     3.*)
+         COMPILER_VERSION="3.*"
+         ;;
+-    5*|4.*)
++    8*|7*|6*|5*|4.*)
+         COMPILER_VERSION="4"
+         ;;
+     *)
+diff -up qt-everywhere-opensource-src-4.8.7/src/xmlpatterns/api/qcoloroutput_p.h.gcc6 qt-everywhere-opensource-src-4.8.7/src/xmlpatterns/api/qcoloroutput_p.h
+--- qt-everywhere-opensource-src-4.8.7/src/xmlpatterns/api/qcoloroutput_p.h.gcc6	2015-05-07 09:14:48.000000000 -0500
++++ qt-everywhere-opensource-src-4.8.7/src/xmlpatterns/api/qcoloroutput_p.h	2016-04-15 07:04:19.431268227 -0500
+@@ -70,8 +70,8 @@ namespace QPatternist
+             ForegroundShift = 10,
+             BackgroundShift = 20,
+             SpecialShift    = 20,
+-            ForegroundMask  = ((1 << ForegroundShift) - 1) << ForegroundShift,
+-            BackgroundMask  = ((1 << BackgroundShift) - 1) << BackgroundShift
++            ForegroundMask  = 0x1f << ForegroundShift,
++            BackgroundMask  = 0x7 << BackgroundShift
+         };
+ 
+     public:
diff --git a/libqt4.spec b/libqt4.spec
index 04cf2fd..2de2531 100644
--- a/libqt4.spec
+++ b/libqt4.spec
@@ -23,7 +23,7 @@
 
 Name:          libqt4
 Version:       4.8.7
-Release:       1mamba
+Release:       2mamba
 Summary:       A multiplatform, C++ GUI application development framework
 Group:         System/Libraries
 Vendor:        openmamba
@@ -52,6 +52,7 @@ Patch5:        libqt4-4.8.4-set-alpha-flags-after-converto32-in-eglcreatesurface
 Patch6:        libqt4-4.8.6-glib-honor-ExcludeSocketNotifiers-flag.patch
 Patch7:        libqt4-4.8.6-qclipboard_fix_recursive.patch
 Patch8:        libqt4-4.8.6-qclipboard_delay.patch
+Patch9:        libqt4-4.8.7-gcc-6.1.0.patch
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
@@ -545,6 +546,7 @@ Phonon development files for %{name}.
 %patch6 -p1
 %patch7 -p0
 %patch8 -p0
+%patch9 -p1
 
 sed -i -e "s|-O2|%{optflags}|g" mkspecs/%{platform}/qmake.conf
 
@@ -554,6 +556,8 @@ export qtbuilddir=`pwd`
 export PATH=$qtbuilddir/bin:$PATH
 export MANPATH=$qtbuilddir/doc/man:$MANPATH
 export LD_LIBRARY_PATH=$qtbuilddir/lib:$LD_LIBRARY_PATH
+# workaround for class std::auto_ptr' is deprecated with gcc-6
+export CXXFLAGS="%{optflags} -std=gnu++98 -Wno-deprecated"
 
 ./configure \
    -prefix %{_qt4_prefix} \
@@ -576,7 +580,7 @@ export LD_LIBRARY_PATH=$qtbuilddir/lib:$LD_LIBRARY_PATH
 %ifarch arm
    -egl \
 %endif
-   -release \
+   -debug \
    -shared \
    -cups \
    -fontconfig \
@@ -629,10 +633,10 @@ for d in QtDeclarative QtCore QtScript QtGui; do
 done
 
 # install libwebcore.a and libjscore.a
-install -m755 src/3rdparty/webkit/Source/WebCore/release/libwebcore.a %{buildroot}%{_libdir}/libwebcore.a
-install -m644 src/3rdparty/webkit/Source/WebCore/release/libwebcore.prl %{buildroot}%{_libdir}/libwebcore.prl
-install -m755 src/3rdparty/webkit/Source/JavaScriptCore/release/libjscore.a %{buildroot}%{_libdir}/libjscore.a
-install -m644 src/3rdparty/webkit/Source/JavaScriptCore/release/libjscore.prl %{buildroot}%{_libdir}/libjscore.prl
+#install -m755 src/3rdparty/webkit/Source/WebCore/release/libwebcore.a %{buildroot}%{_libdir}/libwebcore.a
+#install -m644 src/3rdparty/webkit/Source/WebCore/release/libwebcore.prl %{buildroot}%{_libdir}/libwebcore.prl
+#install -m755 src/3rdparty/webkit/Source/JavaScriptCore/release/libjscore.a %{buildroot}%{_libdir}/libjscore.a
+#install -m644 src/3rdparty/webkit/Source/JavaScriptCore/release/libjscore.prl %{buildroot}%{_libdir}/libjscore.prl
 
 install -p -m644 LICENSE.GPL3 %{buildroot}%{_qt4_prefix}/
 
@@ -985,10 +989,10 @@ echo "\
 %{_qt4_headerdir}/QtDeclarative/
 %{?build_phonon:%exclude %{_qt4_headerdir}/phonon/}
 #%{?build_phonon:%exclude %{_qt4_headerdir}/Qt/phonon*}
-%{_qt4_libdir}/libwebcore.a
-%{_qt4_libdir}/libwebcore.prl
-%{_qt4_libdir}/libjscore.a
-%{_qt4_libdir}/libjscore.prl
+#%{_qt4_libdir}/libwebcore.a
+#%{_qt4_libdir}/libwebcore.prl
+#%{_qt4_libdir}/libjscore.a
+#%{_qt4_libdir}/libjscore.prl
 %{_qt4_libdir}/libQtUiTools.a
 %{_qt4_libdir}/libQt3Support.la
 %{_qt4_libdir}/libQt3Support.prl
@@ -1159,6 +1163,9 @@ echo "\
 %endif
 
 %changelog
+* Mon Jul 04 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 4.8.7-2mamba
+- rebuilt with debug enabled
+
 * Sun Jun 07 2015 Automatic Build System <autodist@mambasoft.it> 4.8.7-1mamba
 - automatic version update by autodist