diff -r 41300fa6a67c -r f7bc934e204c src/plugins/qpluginbase.pri
--- a/src/plugins/qpluginbase.pri	Tue Feb 02 00:43:10 2010 +0200
+++ b/src/plugins/qpluginbase.pri	Wed Mar 31 11:06:36 2010 +0300
@@ -1,6 +1,6 @@
 TEMPLATE = lib
 isEmpty(QT_MAJOR_VERSION) {
-   VERSION=4.6.1
+   VERSION=4.6.3
 } else {
    VERSION=$${QT_MAJOR_VERSION}.$${QT_MINOR_VERSION}.$${QT_PATCH_VERSION}
 }
@@ -17,5 +17,11 @@
 symbian: {
     TARGET.EPOCALLOWDLLDATA=1
     TARGET.CAPABILITY = All -Tcb
+    TARGET = $${TARGET}$${QT_LIBINFIX}
     load(armcc_warnings)
+
+    # load the environment specific feature definitions
+    exists($${EPOCROOT}epoc32/tools/qt/mkspecs/features/environment.prf) {
+        load($${EPOCROOT}epoc32/tools/qt/mkspecs/features/environment.prf)
+    }
 }