Many of the components were not compiling,because bld.inf had undefined flag #ifdef RD_CUSTOMIZABLE_AI. All the flags removed now. Components do not compile right away. E.g. many icons are missing and need to be copied from Symbian3. See example from MCSPlugin. Shortcut plugin does not need to be compiled as MCSPlugin replaces it.
<?xml version="1.0"?>
<!DOCTYPE SystemDefinition SYSTEM "sysdef_1_4_0.dtd" [
<!ENTITY layer_real_source_path "sf/app/homescreen" >
]>
<SystemDefinition name="homescreen" schema="1.4.0">
<systemModel>
<layer name="app_layer">
<module name="homescreen">
<unit unitID="hs.homescreen" mrp="" bldFile="&layer_real_source_path;/group" name="homescreen" />
</module>
</layer>
<layer name="unit_test_layer">
<module name="homescreen_unit_tests">
<unit unitID="hsdo.wmunit.test" mrp="" bldFile="&layer_real_source_path;/idlehomescreen/widgetmanager/tsrc/wmunittest/group" name="wmunit.test" />
</module>
</layer>
</systemModel>
</SystemDefinition>