1 files changed, 14 insertions, 0 deletions
diff --git a/qmake/property.cpp b/qmake/property.cpp
index d84f8e1ab9..0c36c1cc59 100644
--- a/qmake/property.cpp
+++ b/qmake/property.cpp
@@ -160,6 +160,13 @@ QMakeProperty::setValue(QString var, const QString &val)
     settings->setValue(keyBase() + var, val);
 }
 
+void
+QMakeProperty::remove(const QString &var)
+{
+    initSettings();
+    settings->remove(keyBase() + var);
+}
+
 bool
 QMakeProperty::exec()
 {
@@ -230,6 +237,13 @@ QMakeProperty::exec()
             if(!var.startsWith("."))
                 setValue(var, (*it));
         }
+    } else if(Option::qmake_mode == Option::QMAKE_UNSET_PROPERTY) {
+        for(QStringList::ConstIterator it = Option::prop::properties.begin();
+            it != Option::prop::properties.end(); it++) {
+            QString var = (*it);
+            if(!var.startsWith("."))
+                remove(var);
+        }
     }
     return ret;
 }