diff --git a/cmake-cmCustomCommand_add_operator=.patch b/cmake-cmCustomCommand_add_operator=.patch
new file mode 100644
index 0000000..7d224fc
--- /dev/null
+++ b/cmake-cmCustomCommand_add_operator=.patch
@@ -0,0 +1,76 @@
+From 17c841c42d69987c84940232428928c39f1637cd Mon Sep 17 00:00:00 2001
+From: Brad King <brad.king@kitware.com>
+Date: Wed, 17 Jul 2013 11:02:46 -0400
+Subject: [PATCH] add_custom_command: Manage backtrace memory correctly (#14299)
+
+Add an assignment operator to cmCustomCommand to copy the Backtrace
+member pointee and avoid multiple-free on destruction.
+
+Reported-by: Vitezslav Cizek <vcizek@suse.cz>
+---
+ Source/cmCustomCommand.cxx |   28 ++++++++++++++++++++++++++++
+ Source/cmCustomCommand.h   |    1 +
+ 2 files changed, 29 insertions(+), 0 deletions(-)
+
+diff --git a/Source/cmCustomCommand.cxx b/Source/cmCustomCommand.cxx
+index bd860ee..3620a38 100644
+--- a/Source/cmCustomCommand.cxx
++++ b/Source/cmCustomCommand.cxx
+@@ -13,6 +13,8 @@
+ 
+ #include "cmMakefile.h"
+ 
++#include <cmsys/auto_ptr.hxx>
++
+ //----------------------------------------------------------------------------
+ cmCustomCommand::cmCustomCommand()
+ {
+@@ -36,6 +38,32 @@ cmCustomCommand::cmCustomCommand(const cmCustomCommand& r):
+ }
+ 
+ //----------------------------------------------------------------------------
++cmCustomCommand& cmCustomCommand::operator=(cmCustomCommand const& r)
++{
++  if(this == &r)
++    {
++    return *this;
++    }
++
++  this->Outputs = r.Outputs;
++  this->Depends = r.Depends;
++  this->CommandLines = r.CommandLines;
++  this->HaveComment = r.HaveComment;
++  this->Comment = r.Comment;
++  this->WorkingDirectory = r.WorkingDirectory;
++  this->EscapeAllowMakeVars = r.EscapeAllowMakeVars;
++  this->EscapeOldStyle = r.EscapeOldStyle;
++  this->ImplicitDepends = r.ImplicitDepends;
++
++  cmsys::auto_ptr<cmListFileBacktrace>
++    newBacktrace(new cmListFileBacktrace(*r.Backtrace));
++  delete this->Backtrace;
++  this->Backtrace = newBacktrace.release();
++
++  return *this;
++}
++
++//----------------------------------------------------------------------------
+ cmCustomCommand::cmCustomCommand(cmMakefile* mf,
+                                  const std::vector<std::string>& outputs,
+                                  const std::vector<std::string>& depends,
+diff --git a/Source/cmCustomCommand.h b/Source/cmCustomCommand.h
+index dd92e34..e20d2bf 100644
+--- a/Source/cmCustomCommand.h
++++ b/Source/cmCustomCommand.h
+@@ -27,6 +27,7 @@ public:
+   /** Default and copy constructors for STL containers.  */
+   cmCustomCommand();
+   cmCustomCommand(const cmCustomCommand& r);
++  cmCustomCommand& operator=(cmCustomCommand const& r);
+ 
+   /** Main constructor specifies all information for the command.  */
+   cmCustomCommand(cmMakefile* mf,
+-- 
+1.7.0
+
+
diff --git a/cmake.changes b/cmake.changes
index 1574533..8fe8dbf 100644
--- a/cmake.changes
+++ b/cmake.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Jul 17 11:49:37 UTC 2013 - vcizek@suse.com
+
+- add missing operator= for cmCustomCommand (bnc#829544)
+  * cmake-cmCustomCommand_add_operator=.patch
+
 -------------------------------------------------------------------
 Thu Jun 20 19:17:35 UTC 2013 - tittiatcoke@gmail.com
 
diff --git a/cmake.spec b/cmake.spec
index 5f40869..69e803e 100644
--- a/cmake.spec
+++ b/cmake.spec
@@ -24,6 +24,7 @@ Source0:        http://www.cmake.org/files/v2.8/%{name}-%{version}.tar.gz
 Patch1:         cmake-disable-builtin-chrpath.diff
 Patch2:         cmake-fix-ruby-test.patch
 Patch3:         cmake-fix-ImageMagick6.patch
+Patch4:         cmake-cmCustomCommand_add_operator=.patch
 Summary:        Cross-platform, open-source make system
 License:        BSD-3-Clause
 Group:          Development/Tools/Building
@@ -53,6 +54,7 @@ CMake is a cross-platform, open-source make system
 %patch1
 %patch2
 %patch3 -p1
+%patch4 -p1
 
 %build
 export CXXFLAGS="$RPM_OPT_FLAGS"