1 files changed, 40 insertions, 20 deletions

diff --git a/Source/cmTargetPropCommandBase.cxx b/Source/cmTargetPropCommandBase.cxx
index 771097c..287ce46 100644
--- a/Source/cmTargetPropCommandBase.cxx
+++ b/Source/cmTargetPropCommandBase.cxx
@@ -48,8 +48,20 @@ bool cmTargetPropCommandBase
     return false;
     }
 
+  bool system = false;
   unsigned int argIndex = 1;
 
+  if ((flags & PROCESS_SYSTEM) && args[argIndex] == "SYSTEM")
+    {
+    if (args.size() < 4)
+      {
+      this->SetError("called with incorrect number of arguments");
+      return false;
+      }
+    system = true;
+    ++argIndex;
+    }
+
   bool prepend = false;
   if ((flags & PROCESS_BEFORE) && args[argIndex] == "BEFORE")
     {
@@ -66,7 +78,7 @@ bool cmTargetPropCommandBase
 
   while (argIndex < args.size())
     {
-    if (!this->ProcessContentArgs(args, argIndex, prepend))
+    if (!this->ProcessContentArgs(args, argIndex, prepend, system))
       {
       return false;
       }
@@ -77,7 +89,7 @@ bool cmTargetPropCommandBase
 //----------------------------------------------------------------------------
 bool cmTargetPropCommandBase
 ::ProcessContentArgs(std::vector<std::string> const& args,
-                     unsigned int &argIndex, bool prepend)
+                     unsigned int &argIndex, bool prepend, bool system)
 {
   const std::string scope = args[argIndex];
 
@@ -105,12 +117,12 @@ bool cmTargetPropCommandBase
         || args[i] == "PRIVATE"
         || args[i] == "INTERFACE" )
       {
-      this->PopulateTargetProperies(scope, content, prepend);
+      this->PopulateTargetProperies(scope, content, prepend, system);
       return true;
       }
     content.push_back(args[i]);
     }
-  this->PopulateTargetProperies(scope, content, prepend);
+  this->PopulateTargetProperies(scope, content, prepend, system);
   return true;
 }
 
@@ -118,27 +130,35 @@ bool cmTargetPropCommandBase
 void cmTargetPropCommandBase
 ::PopulateTargetProperies(const std::string &scope,
                           const std::vector<std::string> &content,
-                          bool prepend)
+                          bool prepend, bool system)
 {
   if (scope == "PRIVATE" || scope == "PUBLIC")
     {
-    this->HandleDirectContent(this->Target, content, prepend);
+    this->HandleDirectContent(this->Target, content, prepend, system);
     }
   if (scope == "INTERFACE" || scope == "PUBLIC")
     {
-    if (prepend)
-      {
-      const std::string propName = std::string("INTERFACE_") + this->Property;
-      const char *propValue = this->Target->GetProperty(propName.c_str());
-      const std::string totalContent = this->Join(content) + (propValue
-                                                ? std::string(";") + propValue
-                                                : std::string());
-      this->Target->SetProperty(propName.c_str(), totalContent.c_str());
-      }
-    else
-      {
-      this->Target->AppendProperty(("INTERFACE_" + this->Property).c_str(),
-                                   this->Join(content).c_str());
-      }
+    this->HandleInterfaceContent(this->Target, content, prepend, system);
+    }
+}
+
+//----------------------------------------------------------------------------
+void cmTargetPropCommandBase::HandleInterfaceContent(cmTarget *tgt,
+                                  const std::vector<std::string> &content,
+                                  bool prepend, bool)
+{
+  if (prepend)
+    {
+    const std::string propName = std::string("INTERFACE_") + this->Property;
+    const char *propValue = tgt->GetProperty(propName.c_str());
+    const std::string totalContent = this->Join(content) + (propValue
+                                              ? std::string(";") + propValue
+                                              : std::string());
+    tgt->SetProperty(propName.c_str(), totalContent.c_str());
+    }
+  else
+    {
+    tgt->AppendProperty(("INTERFACE_" + this->Property).c_str(),
+                          this->Join(content).c_str());
     }
 }