Building of qmldumper fails for Symbian targets

It tries to build qmldumper.exe for winscw_udeb. Even though my Symbian app target has a different toolchain_configuration than winscw_udeb. Therfore that fails:

Could not build QML plugin dumping helper for "4.8.0 Symbian subst_k"
Output:
"Building helper library 'qmldump' in K:/qt/qtc-qmldump/

Running K:/epoc32/tools/make.exe distclean...
sbs reallyclean -c winscw_udeb.mwccinc -c armv5_udeb -c armv6_udeb -c armv5_urel -c armv6_urel

no warnings or errors

Run time 2 seconds

sbs: build log in K:/epoc32/build/Makefile.2010-10-01-19-27-19.log

Running k:/qt/bin/qmake.exe ...

Running K:/epoc32/tools/make.exe ...
sbs -c winscw_udeb.mwccinc
resource : epoc32\data\z\resource\apps\qmldump.rsc [winscw_udeb.mwccinc]
resource : epoc32\data\z\private\10003a3f\import\apps\qmldump_reg.rsc [winscw_udeb.mwccinc]
sbs: warning: Missing dependency detected: K:/epoc32/release/winscw/udeb/QtDeclarative.lib
sbs: warning: Missing dependency detected: K:/epoc32/release/winscw/udeb/qtmain.lib
sbs: warning: Missing dependency detected: K:/epoc32/release/winscw/udeb/QtCore.lib
sbs: warning: Missing dependency detected: K:/epoc32/release/winscw/udeb/QtGui.lib
compile : ..\..\epoc32\build\qtc-qmldump\c_ade1c6db4278d17a\qmldump_exe\winscw\udeb\qmldump.UID.CPP [winscw_udeb.mwccinc]
compile : main.cpp [winscw_udeb.mwccinc]
target : epoc32\release\winscw\udeb\qmldump.exe [winscw_udeb.mwccinc]
checklib: error: couldn't open file.

sbs : warnings: 4
sbs : errors: 3

Run time 6 seconds

sbs: build log in K:/epoc32/build/Makefile.2010-10-01-19-27-24.log

FAILED win32simplelink for winscw_udeb.mwccinc: epoc32\release\winscw\udeb\qmldump.exe
mmp: qmldump_exe.mmp
make[1]: *** [K:/epoc32/release/winscw/udeb/qmldump.exe] Error 1
sbs: error: The make-engine exited with errors.
K:\epoc32\tools\make.exe: *** [debug-winscw] Error 1
"