diff --git a/automoc4-0.9.88-check_cmake_QProcess_start.patch b/automoc4-0.9.88-check_cmake_QProcess_start.patch
new file mode 100644
index 0000000..0d0443b
--- /dev/null
+++ b/automoc4-0.9.88-check_cmake_QProcess_start.patch
@@ -0,0 +1,15 @@
+--- kde4automoc.cpp~	2009-01-22 20:50:09.000000000 +0200
++++ kde4automoc.cpp	2011-06-21 20:20:56.000000000 +0200
+@@ -71,7 +71,11 @@
+             QStringList args(cmakeEchoColorArgs);
+             args << msg;
+             cmakeEcho.start(cmakeExecutable, args, QIODevice::NotOpen);
+-            cmakeEcho.waitForFinished(-1);
++            if (cmakeEcho.waitForStarted())
++                cmakeEcho.waitForFinished(-1);
++            else
++                cerr << "automoc4: cmake failed to start: "
++                 << cmakeEcho.errorString() << endl;
+         }
+ 
+         QString builddir;
diff --git a/automoc4-0.9.88-pthread-workaround-for-blocking.patch b/automoc4-0.9.88-pthread-workaround-for-blocking.patch
new file mode 100644
index 0000000..0bd3837
--- /dev/null
+++ b/automoc4-0.9.88-pthread-workaround-for-blocking.patch
@@ -0,0 +1,13 @@
+--- CMakeLists.txt.orig	Sun Dec 25 15:35:23 2011
++++ CMakeLists.txt	Sun Dec 25 15:35:40 2011
+@@ -21,7 +21,9 @@
+ set_target_properties(automoc4  PROPERTIES  SKIP_BUILD_RPATH            FALSE
+                                             INSTALL_RPATH_USE_LINK_PATH TRUE )
+ 
+-target_link_libraries(automoc4 ${QT_QTCORE_LIBRARY})
++find_package(Threads)
++target_link_libraries(automoc4 ${QT_QTCORE_LIBRARY} ${CMAKE_THREAD_LIBS_INIT})
++
+ 
+ install(TARGETS automoc4 DESTINATION bin)
+ install(FILES Automoc4Config.cmake Automoc4Version.cmake automoc4.files.in  DESTINATION  lib${LIB_SUFFIX}/automoc4)
diff --git a/automoc4.spec b/automoc4.spec
index 0a74791..970e6c4 100644
--- a/automoc4.spec
+++ b/automoc4.spec
@@ -1,6 +1,6 @@
 Name:          automoc4
 Version:       0.9.88
-Release:       4mamba
+Release:       5mamba
 Summary:       Automatic moc for Qt 4 packages
 Group:         Development/Tools
 Vendor:        openmamba
@@ -10,6 +10,8 @@ URL:           http://www.kde.org
 Source:        http://download.kde.org/stable/automoc4/%{version}/automoc4-%{version}.tar.bz2
 Patch0:        automoc4-0.9.88-boost-definitions.patch
 Patch1:        automoc4-0.9.88-fix-blocking.patch
+Patch2:        automoc4-0.9.88-check_cmake_QProcess_start.patch
+Patch3:        automoc4-0.9.88-pthread-workaround-for-blocking.patch
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
@@ -27,7 +29,9 @@ This package is part of the KDE4, as a component of the kdesupport module.
 %prep
 %setup -q
 %patch0 -p0
-%patch1 -p0
+#%patch1 -p0
+%patch2 -p0
+%patch3 -p0
 
 %build
 %cmake -d build
@@ -46,6 +50,9 @@ This package is part of the KDE4, as a component of the kdesupport module.
 %{_libdir}/automoc4/
 
 %changelog
+* Fri Mar 18 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 0.9.88-5mamba
+- use two other patches to try to fix blocking problem
+
 * Thu Mar 03 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 0.9.88-4mamba
 - add a patch to fix blocking (https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=163513)