okay, I got it. Okay, I never cared about the project-config.jam file (maybe because the user_config file is mentioned after bootsrap.sh). I just put the using intel-linux stuff inside projetc-config: if ! intel-linux in [ feature.values <toolset> ] {     using intel-linux : 10.1 : /lrz/sys/intel/icc_101/bin/icpc : <compileflags>"-fPIC" <linkflags>"-fPIC" ; } instead of the user_config. That's it. Don't know why it doesn't work for intel with user_config but for the gcc. However, I hope it'll work.. Thank @all, SirAnn -- NEU: Mit GMX DSL über 1000,- ¿ sparen! http://portal.gmx.net/de/go/dsl02