Hello Together

I am trying to build boost 1.56.0 with stlport 5.2.1. I added
using stlport : 5.2.1 :
    "d:\Projects\STLport\STLport-5.2.1\stlport" :
    "d:\Projects\STLport\STLport-5.2.1\lib"
;
to the user-config.jam file

Then i try to build with the command: b2 --build-dir="libs_winCE60_SuperSonic" toolset=msvc-9.0~arm_supersonic threading=multi stdlib=stlport-5.2.1 --build-type=complete msvc stage >Build_winCE60_SuperSonic.log 2>&1

But all I get is:

D:/Projects/boost/boost_1_56_0/tools/build/src/build\feature.jam:493: in validate-value-string from module feature
error: "stlport-5.2.1" is not a known value of feature <stdlib>
error: legal values: "native"
D:/Projects/boost/boost_1_56_0/tools/build/src/build\feature.jam:363: in expand-subfeatures-aux from module feature
D:/Projects/boost/boost_1_56_0/tools/build/src/build\feature.jam:424: in feature.expand-subfeatures from module feature
D:/Projects/boost/boost_1_56_0/tools/build/src/build\build-request.jam:20: in apply-to-property-set from module build-request
(builtin):-1: in sequence.transform from module sequence
D:/Projects/boost/boost_1_56_0/tools/build/src/build\build-request.jam:32: in build-request.expand-no-defaults from module build-request
D:/Projects/boost/boost_1_56_0/tools/build/src\build-system.jam:594: in load from module build-system
D:\Projects\boost\boost_1_56_0\tools\build\src/kernel\modules.jam:289: in import from module modules
D:\Projects\boost\boost_1_56_0\tools\build\src/kernel/bootstrap.jam:139: in boost-build from module
D:\Projects\boost\boost_1_56_0\boost-build.jam:17: in module scope from module


--
Christoph